Entries |
Document | Title | Date |
20080198480 | Inner focusing zoom lens barrel - The present invention is directed to an inner focusing zoom lens barrel provided with cams of a well-balanced configuration for smooth zooming and/or focusing operations, which attains sufficient performances at the minimum object distance, which is capable of inhibiting a focal length from varying throughout the entire zoom range, and which has a reduced outer diameter. The inner focusing zoom lens barrel has a fixed barrel, first and second cam barrels, a linear-shuttle barrel, a focusing cam barrel, a zooming relay barrel, and a 1st-lens-group sliding barrel, characterized in that the first cam barrel, the linear-shuttle barrel, and the focusing cam barrel are superposed one over another in this sequence inside the fixed barrel while the zooming relay barrel, the second cam barrel, and the 1st-lens-group sliding barrel are superposed one over another in this sequence outside the fixed barrel. The first cam barrel is formed with 3rd- and 4th-lens-group guiding cams, the linear-shuttle barrel is formed with 2nd-lens-group guiding cams, the zooming relay barrel is formed with 1st-cam-barrel guiding cams, the second cam barrel is formed with 1st-lens-group guiding cams, and the focusing cam barrel is formed with 2nd-lens-group focusing/guiding grooves and 2nd-lens-group guiding grooves. | 08-21-2008 |
20080204895 | LENS BARREL AND IMAGING DEVICE - A lens barrel which allows efficient interlock between a cylindrical member such as a moving cam ring and a component such as a viewfinder cam plate or a strobe cam plate, without size-increasing. The lens barrel comprises a first cylindrical member, and a second cylindrical member that is disposed so as to receive the first cylindrical member, and includes a guiding part at an inner circumferential surface thereof. The guiding part includes a groove-form hole part that penetrates the second cylindrical member, and the first cylindrical member includes a follower part that follows the guiding part having the groove-form hole part. | 08-28-2008 |
20080266675 | LENS MODULE AND CAMERA MODULE HAVING SAME - A lens module includes a first lens assembly, a first lens barrel, a second lens assembly, a second lens barrel having a bottom with a through hole, an elastic member and a holder receiving the first lens barrel and the elastic member therein. The first lens barrel has one of guiding protrusions and guiding grooves, and the holder has the other one of the guiding protrusions and the guiding grooves, the guiding protrusions being adapted for sliding in the guiding grooves. The first lens barrel has one of sloping portions and protrusions on an end facing toward the second lens barrel, and the second lens barrel has the other one of the sloping portions and the protrusions therein, the second lens barrel is threadedly movable relative to the holder, whereby the protrusions slide on the sloping portions such that the first lens barrel is forced to move. | 10-30-2008 |
20080291550 | ZOOM LENS STRUCTURE - The present invention discloses a zooming lens structure comprising at least a fixed lens barrel, an diaphragm member, a front track lens barrel, a rear track lens barrel, a front lens barrel module and a rear lens barrel module, wherein the first guide screw cylinder of the front lens barrel module is driven through geometric correlation of the first guide slot of the fixed lens barrel and the first track of the front track lens barrel to enable the front lens barrel module to shift within the fixed lens barrel; again, the second guide screw cylinder of the rear lens barrel module is driven through geometric correlation of the second guide slot of the fixed lens barrel and the second track of the rear track lens barrel to enable the rear lens barrel module to shift within the fixed lens barrel, and since the screw bolt locks the front and rear track lens barrel, the front and rear track lens barrels rotate simultaneously, and the first guide screw cylinder and the second guide screw cylinder then are simultaneously driven to achieve zooming effect. | 11-27-2008 |
20090034096 | CYLINDRICAL MOLDED ARTICLE, LENS BARREL, CAMERA, AND INJECTION MOLD - A drive frame | 02-05-2009 |
20090046377 | Cam Drive Mechanism, Lens Barrel and Camera - A cam drive mechanism includes: a cylinder in which a cam groove is formed from one end face of an inner circumferential surface toward another end with a forming mold; a drive target object that comprises a cam follower to engage in the cam groove and is linearly driven along a rotational axis of the cylinder as the cylinder rotates; and a pressing member that presses the cam follower against a cam surface constituting a side surface of the cam groove. The cam surface is formed to have varying gradients so as to enable adjustment of an extent of displacement of the drive target object per unit of rotational angle by which the cylinder rotates and the cam groove is formed in a shape that allows the forming mold to be extracted from the cylinder through rotational extraction. | 02-19-2009 |
20090052054 | LENS BARREL - A lens barrel includes a lens group having an optical axis associated therewith, a fixed barrel and a rotatable barrel receives the fixed barrel. The fixed barrel has the lens group received therein and has a plurality of projections extending radially from the outer surface of the fixed barrel. The rotatable barrel rotatable relative to the fixed barrel about the optical axis has an inner latching groove and a number of insertion cutouts. The latching groove is defined in the inner surface of the rotatable barrel. The insertion cutouts are defined in a distal edge of the rotatable barrel with the inner latching groove and communicating with the latching groove. The insertion cutouts is insertable in the insertion cutouts and can engage in the latching groove for preventing the rotatable barrel to move axially relative to the fixed barrel. | 02-26-2009 |
20090073576 | Zoom lens system - The present invention is directed to improve prior art zoom lens systems that have groups of lens pieces moved within a lens barrel for the zooming and the focusing and to provide an improved zoom lens system that is simplified and robust in configuration so as to withstand malfunctions well and is capable of effectively and assuredly eliminating stray light. The zoom lens system comprises a first cam barrel rotating about the optical axis and a second cam barrel located inside the first cam barrel in cam-linkage with the same, and the zoom lens system is characterized in that the second cam barrel has openings to let light beams pass through, and that a light-shielding plate like an iris diaphragm is supported by the second cam barrel in position closer to the photographed subject in the second cam barrel so as to shield the light beams that come in from the openings in the second cam barrel after going out of the openings in the second cam barrel and then being reflected from an inner surface of the first cam barrel. | 03-19-2009 |
20090086337 | LENS DEVICE AND IMAGING DEVICE - An optical path passing through an object-side lens group is bent at a right angle by an optical device so as to be a vertical optical path. A lens group on imaging surface side for forming an image on an imaging surface is disposed on the vertical optical path. The lens group on imaging surface side moves along the vertical optical path, and has a plurality of movable lens groups at least for zooming. The cam plate moves in a direction perpendicular to the vertical optical path within a plane perpendicular to an optical axis of the object-side lens group and not protruding toward an object side compared with the object-side lens group. A plurality of cam slots are formed on the cam plate. The cam slots are fit to a part of the plurality of movable lens groups. In accordance with the movement of the cam plate, the cam slots move the plurality of the movable lens groups such that zooming and focusing are performed. | 04-02-2009 |
20090122421 | IMAGING DEVICE AND CAMERA - The present invention aims to provide an imaging device and a camera realizing simultaneously a high magnification zoom lens system and the miniaturization of the device. The imaging device ( | 05-14-2009 |
20090185286 | Lens barrel and image pickup apparatus - An addendum of a gear portion and a tip end of a first cam follower are located on similar-diameter cylindrical planes centering at a center axis of a cam ring. A gear housing recess is provided in an inner peripheral surface of a fixed ring. A bottom surface of a first-cam-ring-movement cam groove engaging with the first cam follower, and a bottom surface of the recess are located on similar-diameter cylindrical planes centering at a center axis of the fixed ring. A release portion is provided at the inner peripheral surface of the fixed ring to provide communication between a protruding position cam groove portion of the first-cam-ring-movement cam groove and the recess. At the protruding position of the cam ring, a portion of the gear portion near the first cam follower passes through the release portion and is located inside the protruding position cam groove portion. | 07-23-2009 |
20090195890 | Lens barrel and camera with lens barrel - A lens barrel includes: a first optical element group that has an optical element disposed on a first optical axis; a second optical element group that has an optical element disposed on a second optical axis extending along a direction different from a direction along which the first optical axis extends; and a bending portion disposed between the first optical element group and the second optical element group, that bends image light having passed through the first optical element. At least part of the first optical element group can be housed inside a first space formed as the bending portion moves further away from the first optical axis. | 08-06-2009 |
20090195891 | CAM MECHANISM OF A RETRACTABLE ZOOM LENS - A cam mechanism includes a cam ring having front and rear cam grooves which have a common reference cam diagram and are formed so that a front part of the front cam groove and a rear part of the rear cam groove are omitted from the reference cam diagram. A normal-width section and a wide-width section are provided in each of the front and rear cam grooves. In a zoom range, an associated cam follower of a driven member is engaged in the normal-width section of one of the front and rear cam grooves, and another associated cam follower of the driven member is positioned out of the other of the front and rear cam grooves. In a transition state between the zoom range and an accommodated position, both of the associated cam followers are positioned out of the normal-width sections of the respective front and rear cam grooves. | 08-06-2009 |
20090219629 | LENS BARREL AND IMAGING DEVICE - A lens barrel which allows efficient interlock between a cylindrical member such as a moving cam ring and a component such as a viewfinder cam plate or a strobe cam plate, without size-increasing. The lens barrel comprises a first cylindrical member, and a second cylindrical member that is disposed so as to receive the first cylindrical member, and includes a guiding part at an inner circumferential surface thereof. The guiding part includes a groove-form hole part that penetrates the second cylindrical member, and the first cylindrical member includes a follower part that follows the guiding part having the groove-form hole part. | 09-03-2009 |
20090231731 | LENS BARREL - A lens barrel includes an imaging optical system having front and rear optical elements with a spring installed therebetween; a reference barrel which includes a forward-facing limit surface and a rearward-facing limit surface; a first position control mechanism which includes a first rotational member and a first limit member, and varies a position of the front optical element in the optical axis direction relative to the reference barrel; and a second position control mechanism which includes a second rotational member and a second limit member, and varies a position of the rear optical element in the optical axis direction relative to the reference barrel. The first limit member is brought into contact with the rearward-facing limit surface by a forward biasing force of the spring while the second limit member is brought into contact with the forward-facing limit surface by a rearward biasing force of the spring. | 09-17-2009 |
20090231732 | LENS BARREL AND ZOOM LENS BARREL - A lens barrel includes a rotational ring, first and second movable members linearly movable having first and second followers, respectively; and first and second guide grooves formed on the rotational ring, the first and second followers being slidably engaged therein, respectively. The first movable member has a non-linear moving path. The first guide groove includes an inclined linear lead groove. The lens barrel includes a complementary cam mechanism for controlling the rotational ring to define a non-linear moving path of the first movable member via a cam track of the complementary cam mechanism and a track of the linear lead groove. The second guide groove includes first and second lead groove portions extending parallel to the linear lead groove at different positions in the optical axis direction, and a differential groove portion extending in the circumferential direction which connect the first and second lead groove portions. | 09-17-2009 |
20100020413 | LENS BARREL - A lens barrel includes a lens holding frame configured to hold a lens and being provided with a cam follower, a guide tube engaging with the lens holding frame and being configured to rectilinearly guide the lens holding frame in an optical axis direction, and a cam tube engaging with the cam follower and being provided with a cam slot which engages with the cam follower, the cam tube being configured to rotate about the optical axis thereby to move the lens holding member in the optical axis direction, wherein the cam slot has a locus including a flat portion orthogonal to the optical axis and a lift portion not orthogonal to the optical axis, wherein the flat portion has a surface perpendicular to the optical axis, and wherein the cam follower has a surface parallel to the perpendicular surface. | 01-28-2010 |
20100020414 | LENS APPARATUS AND OPTICAL APPARATUS - The lens apparatus includes a guide barrel including a guide groove portion penetrating through a circumferential wall of the guide barrel, and a cam barrel disposed rotatably and including a penetrating cam groove portion penetrating through a circumferential wall of the cam barrel and a non-penetrating cam groove portion not penetrating therethrough. The apparatus further includes a first holding member holding a first optical element and moved in an optical axis direction by the guide groove portion and the penetrating cam groove portion with rotation of the cam barrel, a second holding member holding a second optical element and moved in the optical axis direction by the guide groove portion and the non-penetrating cam groove portion with the rotation of the cam barrel, and an adjusting mechanism used for adjusting a position of one of the first and second optical elements relative to that of the other. | 01-28-2010 |
20100033844 | IMAGE PICKUP APPARATUS - An image pickup apparatus which makes it possible to form a multi-stage retractable lens barrel permitting the amount of extension of the lens barrel to be set as desired. A first intermediate rotary barrel fitted, for rotation, on a first intermediate rectilinear motion barrel restrained from rotation about an optical axis. A second intermediate rectilinear motion barrel is rectilinearly guided by the first intermediate rectilinear motion barrel. A second intermediate rotary barrel is fitted on the second intermediate rectilinear motion barrel and engaged with the first intermediate rotary barrel, rotation. The first intermediate rectilinear motion barrel has a cam groove formed on an inner peripheral surface thereof, for engagement with the second intermediate rotary barrel to cause the same to move along the optical axis. | 02-11-2010 |
20100046089 | LENS BARREL, CAMERA AND INFORMATION DEVICE - A cam locus of the cam surface (G | 02-25-2010 |
20100067122 | LENS APPARATUS AND IMAGE-PICKUP APPARATUS - A lens apparatus which has a small size but allows a higher magnification and an image-pickup apparatus including the lens apparatus are disclosed. The lens apparatus provides a variable magnification by moving a first lens and a second lens placed closer to an image plane than the first lens in the direction of an optical axis. The lens apparatus includes a first driving member which is rotated around the optical axis to move the first lens in the optical axis direction, a second driving member which moves the second lens by itself in the optical axis direction, and a driving mechanism which at least drives the rotation of the first driving member. The second driving member is moved in the optical axis direction relative to the first driving member by the rotation of the first driving member. | 03-18-2010 |
20100165481 | COMPACT ZOOM LENS - A zoom lens includes a substrate, an imaging unit, a stationary lens barrel, a cam lens barrel and a guide lens barrel. The substrate defines a plurality of openings thereon. The imaging unit is attached on the substrate. The stationary lens barrel is mounted on the substrate and surrounding the imaging unit. The cam lens barrel is rotatably received in the stationary lens barrel and movable along the optical axis of the zoom lens as the rotation thereof along the inner circumference of the stationary lens barrel. The guide lens barrel is received in the cam lens barrel and movable axially following the motion of the cam lens barrel, and comprises a plurality of key numbers protruding outwards from the outer circumference corresponding to and received in the openings of the substrate when the zoom lens is positioned in the minimum focal length position. | 07-01-2010 |
20100172032 | Lens barrel, image capturing apparatus, and manufacturing method - Provided is a lens barrel including: a guide shaft in an axial form supported by a reference member; a holding member holding an optical system, and movable in an axial direction of the guide shaft with respect to the reference member; and an interlocking member including an engaging section engaging with the holding member, the interlocking member moving in the axial direction while rotating around an optical axis of the optical system, and moving along the guide shaft without rotating the holding member. The lens barrel may include a driving cylinder including a cam groove engaging with the interlocking member, where when rotated around the optical axis, the driving cylinder drives the interlocking member by means of the cam groove, to cause the interlocking member to move linearly in the direction of the guide shaft. | 07-08-2010 |
20100214671 | LENS BARREL AND IMAGE CAPTURING APPARATUS - Provided is a lens barrel comprising: an optical system including an optical component that moves relative to a fixed cylinder; a holding frame that holds the optical component; a guide axle that is connected to the holding frame and that extends in a direction parallel to an optical axis of the optical system; a scaling drive unit that can move relative to the fixed cylinder and that moves the holding frame in the direction of the optical axis when the optical system scales; and a focusing drive unit that has at least a portion thereof fixed to the fixed cylinder and that moves the guide axle in the direction of the optical axis while facing at least a portion of the guide axle. | 08-26-2010 |
20100232036 | CAM MECHANISM OF A TELESCOPING LENS BARREL - A cam mechanism of a lens barrel includes a cam ring; and a movable frame which moves along an optical axis when the cam ring is rotated, without rotating relative to the cam ring, by engagement of a cam groove provided on the cam ring with a corresponding cam follower provided on the movable frame. The cam groove is formed as a bottomed cam groove including two inclined side surfaces and a bottom surface which connects the two inclined side surfaces. The cam ring includes a single-sided cam section on an end surface of the cam ring, wherein continuity of the reference cam diagram is maintained along the single-sided cam section, and at least a part of one of the two inclined side surfaces which is positioned closer to a nearby end of the cam ring is absent at the single-sided cam section. | 09-16-2010 |
20100290132 | LENS BARREL - A lens barrel of the present invention includes a fixing frame | 11-18-2010 |
20100296175 | LENS MECHANISM AND IMAGING DEVICE - Disclosed herein is a lens mechanism including: a base; a guide member fixed to the base; a lens holding member adapted to hold the lens and which is held by the guide member in such a manner as to move straight along the optical axis; a rotary member adapted to rotate while at the same time engaging with part of the lens holding member so as to cause the lens holding member to move straight along the optical axis; and polymer actuator elements each of which has one end fixed to the base or guide member and the other end engaging with part of the rotary member so as to rotate the rotary member in a plane orthogonal to the optical axis. | 11-25-2010 |
20100296176 | LENS BARREL - A lens barrel of the present invention includes: a fixing frame having a plurality of cam grooves that are formed an inner circumferential surface of the fixing frame and also having a protrusion provided between any adjacent two of the cam grooves among a plurality of the cam grooves; and a drive frame having cam followers that are provided to an outer circumferential surface of drive frame, are engaged with the cam grooves, and are movable along the cam grooves. With this configuration, when an external force is applied to the drive frame, an end portion of the drive frame comes into contact with the protrusion to prevent the cam followers from coming out of the cam grooves. | 11-25-2010 |
20110019290 | LENS BARREL AND IMAGING DEVICE - A lens barrel includes a first support frame and a second support frame. The first support frame has a cam groove. The second support frame has an annular main body with a cam follower that extends outwardly in a radial direction. The cam follower is slidably disposed in the cam groove and has a first cam portion, a second cam portion and a connecting portion. The second cam portion is aligned with the first cam portion along the circumferential direction of the main body. The connecting portion connects the first cam portion and the second cam portion to create a space between the connecting portion and the cam groove. | 01-27-2011 |
20110026136 | RETRACTABLE LENS BARREL UNIT - A lens barrel unit includes a lens holding cylinder, a cam cylinder, and a straightforward movement cylinder. The lens holding cylinder includes a ring-shaped step that projects outward in a radial direction. In an image pickup state, a surface of the ring-shaped step which is an end of an object side in the ring-shaped step is closer to an object than a surface of the straightforward movement cylinder which is an end of an object side in the straightforward movement cylinder. | 02-03-2011 |
20110026137 | LENS APPARATUS CAPABLE OF PERFORMING EXTENSION/RETRACTION OPERATION WITH RESPECT TO IMAGE PICKUP APPARATUS BODY AND IMAGE PICKUP APPARATUS HAVING THE SAME - A lens apparatus of the present invention includes a cam ring | 02-03-2011 |
20110038058 | ZOOM LENS BARREL AND IMAGE PICKUP APPARATUS HAVING THE SAME - A lens barrel capable of achieving a smooth zoom operation and reducing a driving load at the time of barrel retraction. The lens barrel includes a rectilinear guide cylinder rectilinearly moving in an optical axis direction, and a movable cam cylinder moving in the optical axis direction while rotating relative to the guide cylinder. The guide cylinder is formed at its inner peripheral surface with a cam groove and a rectilinear guide groove that divides the cam groove at a boundary between a retracted region and a photographing region, and is formed with a penetration cam groove extending from the inner peripheral surface to an outer peripheral surface of the guide cylinder. The movable cam cylinder moves in the photographing region while the first pin engages the cam groove, and moves in the retracted region while the second pin engages the penetration cam groove. | 02-17-2011 |
20110038059 | RETRACTABLE LENS BARREL WITH HIGH SHOCK RESISTANCE - A retractable lens barrel that improves shock resistance without obstructing miniaturization. In the retractable lens barrel, pins formed in the lens barrel are engaged with grooves formed in a cam ring, and the lens barrel is caused to move in a direction of an optical axis by rotation of the cam ring. The pins include a cam pin for moving the lens barrel, and a slip-off preventive pin for preventing the cam pin from slipping off the groove. The grooves include a cam groove with which the cam pin is engaged, and a slip-off preventive groove with which the slip-off preventive pin is engaged. In an area close to a retracted position of the lens barrel, the cam groove and the slip-off preventive groove overlap to be shared grooves with which the cam pin and the slip-off preventive pin are engaged. | 02-17-2011 |
20110085253 | LENS APPARATUS - Provided is a lens apparatus including: a lens barrel; a fixed stopper fixed to the lens barrel; an optical unit moving in a direction of an optical axis relative to the lens barrel; a cylindrical grooved cam which includes a stopper restrictor and is held in the lens barrel to be rotatable about a rotation axis parallel to the optical axis, for restricting movement of the optical unit in the direction of the optical axis; and a movable stopper which is movable within a limit of the stopper restrictor, in which the movable stopper is in contact with the stopper restrictor and the fixed stopper to restrict a rotation range of the cylindrical grooved cam. | 04-14-2011 |
20110102910 | ZOOM LENS BARREL - A zoom lens barrel includes a fixed frame, a rotary frame, a moving frame that moves in an optical axis direction with the rotary frame, a float key that is restricted from rotating and moves, an inner cam frame that has a cam follower, is rotationally driven by the rotary frame, and moves in the optical axis direction, a guide frame that has a cam follower, and moves in the optical axis direction, an outer cam frame moves in the optical axis direction with the guide frame, and moves relatively with respect to the guide frame, a second group zoom frame that holds a second group lens, has a cam follower, is restricted from rotating around the optical axis, and moves in the optical axis direction, and a first group zoom frame that holds a first group lens, has a cam follower, and moves in the optical axis direction. | 05-05-2011 |
20110116175 | ZOOM LENS ASSEMBLY - A zoom lens assembly includes a first barrel including a first lens group; a second barrel including a second lens group that is aligned with respect to an optical axis of the first lens group, the second barrel disposed in front of the first lens group so as to be position-adjustable along the optical axis with respect to the first barrel; and a first ray shielding plate disposed in front of the first barrel and between the first barrel and the second barrel, and whose position is varied to be close to a center of the optical axis or to be distant from the center of the optical axis so as to block a portion of incident light that enters into the first barrel according to relative positions of the first barrel and the second barrel. | 05-19-2011 |
20110122509 | LENS BARREL THAT REALIZES MINIATURIZATION, AND IMAGE PICKUP APPARATUS - A lens barrel that causes base portions of cam followers in a first optical member and a second optical member to follow a single straight-ahead movement guide groove along an optical axis even when circumferential phases of the cam followers are staggered, so that the optical members can move straight ahead while being inhibited from rotating. The base portion of the cam follower of one of the first optical member and the second optical member has a slide portion that is guided along both inner wall surfaces of a straight-ahead movement guide groove which face each other in a circumferential direction of a straight-ahead moving cylinder. The slide portion has a guide surface that guides the base portion of the cam follower of the other one of the first optical member and the second optical member in the direction of the optical axis. | 05-26-2011 |
20110194193 | IMAGING APPARATUS - An imaging apparatus has in a first cam groove a first cam surface whose lead is lying with respect to the rotating direction of a drive ring, and a second cam surface whose lead is steep with respect to the rotating direction of the drive ring, and when transition is effected from an accommodated state to a use state, a follower member passes the first cam surface, and when transition is effected from the state where the follower member is engaged with a second cam groove to the accommodated state, the follower member passes the second cam surface. | 08-11-2011 |
20110194194 | LENS BARREL AND IMAGING DEVICE AND HAND-HELD DATA TERMINAL DEVICE INCLUDING THE SAME - A lens barrel includes a plurality of lens groups including first and second lens groups positioned closer to an imaging plane than the first lens group, a plurality of lens group frames including first and second lens group frames holding the first and second lens groups, respectively, a rotary cylinder to engage with the first lens group frame via a cam groove, surround the first lens group frame and be rotated around an optical axis to move the first lens group in the optical axis direction, a rotation transmission system to transmit a rotary force of the rotary cylinder, and a second frame driver provided inside of the first lens group frame and engaging with the second lens group frame via a cam groove to move the second lens group in the optical axis direction by the rotary force of the rotary cylinder transmitted via the rotation transmission system. | 08-11-2011 |
20110242679 | LENS BARREL AND IMAGE PICKUP APPARATUS - A lens barrel that enables to increase a degree of freedom for selecting positions of grooves on a cam barrel. A lens holding member holds a lens and has a follower part. A rectilinear barrel regulates relative rotation of the lens holding member and has a bayonet convex part. The cam barrel has a cam groove with which the follower part engages and a bayonet groove with which the bayonet convex part engages. The positional relationship between the cam barrel and the rectilinear barrel in the optical axis direction is regulated because the bayonet convex part contacts the wall surfaces of both sides of the bayonet groove in a WIDE position, and because a section between a wall surface of the bayonet groove and the end face of the cam barrel is pinched between the bayonet convex part and a member provided in the rectilinear barrel in a TELE position. | 10-06-2011 |
20110242680 | LENS BARREL AND IMAGE PICKUP APPARATUS - A lens barrel capable of keeping a stable zoom operation, increasing magnification of an image pickup apparatus with a simple configuration, and decreasing a camera thickness. A lens barrel is moved in an optical axis direction between a taking position and a retracted position to change magnification. A lens holding member holds a lens and has a follower part. A rectilinear movement regulating member regulates relative rotation of the lens holding member and has a convex part at an outside and a rectilinear rib at an image surface side than the convex part. A cam barrel has a cam groove for engaging the follower part and a groove for engaging the convex part formed on an inner surface. The cam barrel has a cam piece extended to the image surface side, a part of the cam groove is formed on an inner surface of the cam piece. | 10-06-2011 |
20110304924 | LENS BARREL - A lens barrel includes a zoom optical system in which a focal distance is changeable; a first group frame moving together with the first lens group; and first and second cam mechanisms transmitting drive force to the first group frame. In a zoom region, each of a first group cam groove and a cam slot includes a first section, a second section which adjoins the first section and has an absolute value of a gradient smaller than that of the first section, and the third section which adjoins the second section and has the absolute value of the gradient larger than that of the second section, and in which a sign of the gradient is the same as that of the first section. A distance from an imaging surface to the first group frame in the optical axis direction has a local minimum in the second section. | 12-15-2011 |
20110304925 | LENS BARREL - A lens barrel includes an optical system including a first lens group having at least one lens; a cam frame including a first cam groove; and a first movable frame including a first cam follower engaged with the first cam groove. When the first movable frame relatively rotates with respect to the cam frame, the first movable frame relatively moves with respect to the cam frame in an optical axis direction together with the first lens group. A region of the first cam groove, through which the first cam follower passes when a focal distance of the optical system is changed from a wide-angle end to a tele end includes first and second regions adjacent to each other. The first region has a groove width narrower than that of the second region. | 12-15-2011 |
20120002301 | ZOOM LENS APPARATUS HAVING MOVABLE LENS HOLDER - A zoom lens apparatus includes a movable magnification lens component, a stationary barrel, a movable lens holder, and a rotatable cam barrel. Plural cam grooves are formed in the cam barrel, have a pair of cam surfaces opposed to one another, for moving the movable lens holder in the optical axis direction by rotation of the cam barrel relative to the stationary barrel. Plural shaft devices are disposed on a peripheral surface of the movable lens holder, for extending in a radial direction being perpendicular to the optical axis direction. A cam follower device is secured to each of the shaft devices, and inserted in each of the cam grooves. A pair of cam follower surfaces are provided on the cam follower device, deformable resiliently about each of the shaft devices, and pressed by respectively the cam surfaces. | 01-05-2012 |
20120019933 | LENS BARREL AND OPTICAL APPARATUS - A lens barrel includes a cam ring driving unit including a moving frame, a linear driving unit that includes a holding frame configured to hold an image pickup element, and a guide bar that is engaged with the holding frame, extends in the optical axis direction, and is configured to guide a linear movement of the holding frame in the optical axis direction, and an intermediate fixing lens unit configured still in the optical axis direction. The cam ring driving unit is arranged on an object side of the intermediate fixing lens unit, the linear driving unit is arranged on an image pickup element side of the intermediate fixing lens unit, and the lens barrel is configured dividable into the cam ring driving unit, the linear driving unit, and the intermediate fixing lens unit. | 01-26-2012 |
20120033310 | LENS BARREL AND OPTICAL APPARATUS INCLUDING THE SAME - A lens barrel includes: a frame for holding an optical lens, the frame having a bottomed circular recess formed in its outer peripheral surface; a cam follower fixed to an outer diameter portion of the frame with screws, the cam follower including a core and a collar provided on an outer periphery of the core; and a barrel member having a guide groove into which the cam follower is fitted, the guide groove determining a position of the frame, in which under a state in which the cam follower is mounted to the outer diameter portion of the frame, an outer diameter portion of the collar is fitted to an inner diameter portion of the circular recess, and one end surface of the core abuts on a bottom surface of the circular recess and another end surface of the core abuts on a head of the screw. | 02-09-2012 |
20120044579 | ZOOM LENS BARREL - A zoom lens barrel includes a base member | 02-23-2012 |
20120044580 | LENS BARREL - A lens barrel capable of distributing, upon receipt of the impact of, e.g., dropping, a torque load so as not to concentrate on a particular linear movement key and groove for linearly moving a barrel member, thereby suppressing occurrence of a failure. The lens barrel has a fixed barrel ( | 02-23-2012 |
20120063006 | LENS BARREL HAVING CAM CYLINDER WITH CAM GROOVE - A lens barrel includes a lens holding frame | 03-15-2012 |
20120063007 | LENS BARREL, IMAGING DEVICE AND INFORMATION TERMINAL - A lens barrel includes : a first zoom lens; a second zoom lens; a first zoom lens supporting barrel that supports the first zoom lens; a second zoom lens supporting barrel that supports the second zoom lens; a moving member that moves the first zoom lens supporting barrel and the second zoom lens supporting barrel in an optical axis direction of the first and second zoom lens supporting barrels; a first projected section that is provided in one of the first zoom lens supporting barrel and the moving member to cross the optical axis direction and engages with a first groove section provided in the other; and a second projected section that is provided in one of the second zoom lens supporting barrel and the moving member to cross the optical axis direction and engages with a second groove section provided in the other. | 03-15-2012 |
20120140338 | COMPACT ZOOM LENS - A zoom lens includes a first lens, a first lens barrel, a shutter assembly, and a guide barrel. The first lens barrel houses the first lens. The shutter assembly is positioned on a distal end of the first lens barrel toward an object side of the zoom lens. The guide barrel is received in the first lens barrel and configured for guiding the first lens barrel to move along the optical axis of the zoom lens. | 06-07-2012 |
20120281296 | DEVICE FOR TRANSFERRING OPTICAL ELEMENTS - There is provided a device for transferring an optical element including: a differential transmitter including an intermediate ring rotatably with respect to a housing and having a plurality of openings on its circumference, first decelerating members rotatably inserted into ones of the openings, a first transmitting ring disposed on one side of the intermediate ring to contact the first decelerating members, and a second transmitting ring disposed on an opposite side of the intermediate ring; a driving element generating a driving force to rotate the first transmitting ring; a manual manipulation ring transmitting a rotation force generated due to manual manipulation to the second transmitting ring; a moving portion that supports the optical element and moving along the direction of an optical axis; and a cam rotating due to connection with the intermediate ring and having a cam groove connected with the moving portion. | 11-08-2012 |
20120281297 | LENS HOLDER - A lens holder includes: a first barrel with a plurality of helicoidal grooves that extend from a base portion to an end portion and at positions with rotational symmetry; and a second barrel with a plurality of protrusions that respectively enter the plurality of helicoidal grooves. The helicoidal grooves are respectively divided into helicoidal groove sections in multiple stages with a helicoidal groove section on a base portion side and a helicoidal groove section on an end portion side being disposed at angles that do not overlap. The first barrel includes circumferential grooves on the middle portion and circumferential grooves on the end portion. The middle circumferential grooves connect the end on the end side of the helicoidal groove sections on the base side to the end on the base side of the helicoidal groove sections on the end side and guide the protrusions in the circumferential direction. | 11-08-2012 |
20120281298 | LENS BARREL, IMAGE CAPTURING APPARATUS, AND MANUFACTURING METHOD - Provided is a lens barrel including: a guide shaft in an axial form supported by a reference member; a holding member holding an optical system, and movable in an axial direction of the guide shaft with respect to the reference member; and an interlocking member including an engaging section engaging with the holding member, the interlocking member moving in the axial direction while rotating around an optical axis of the optical system, and moving along the guide shaft without rotating the holding member. The lens barrel may include a driving cylinder including a cam groove engaging with the interlocking member, where when rotated around the optical axis, the driving cylinder drives the interlocking member by means of the cam groove, to cause the interlocking member to move linearly in the direction of the guide shaft. | 11-08-2012 |
20120300314 | LENS BARREL, IMAGING APPARATUS, AND INFORMATION DEVICE - A lens barrel includes: a cam cylinder on which a plurality of cam grooves is formed; a plurality of lens groups that has equal to or more than one lens each; and a plurality of lens-holding frames that integrally holds the lens per lens group, has a cam follower each that engages with each cam groove, and is moved along an optical axis direction along a track of each cam groove, each lens-holding frame having: a lens supporting part; and a cylindrical part, and on an outer circumferential surface of which the cam follower is protrusively provided, wherein an inner circumferential part corresponding to a position of the cam follower in the cylindrical part of each lens-holding frame and a cylindrical part of a lens-holding frame positioned on an image plane side are arranged to always overlap in the optical axis direction. | 11-29-2012 |
20120307380 | LENS BARREL - A lens barrel includes a fixing frame provided with cam grooves formed in an inner circumferential surface of the fixing frame, and a drive frame provided with cam followers formed on an outer circumferential surface of the drive frame and a plurality of engaging teeth to the outer circumferential surface of the drive frame, located on substantially the same circumference as the cam followers. With the drive frame incorporated in the fixing frame, the cam followers are fitted in the cam grooves, drive force is transmitted via the engaging teeth, and the drive frame can move relative to the fixing frame in the optical axis direction of a lens as the cam followers move along the cam grooves. In this lens barrel, cam followers are less likely to come out of the cam grooves. | 12-06-2012 |
20130016434 | LENS BARRELAANM Iwasaki; ShinichiAACI OsakaAACO JPAAGP Iwasaki; Shinichi Osaka JPAANM Sakamoto; KeijiAACI YamagataAACO JPAAGP Sakamoto; Keiji Yamagata JPAANM Nagasaki; EijiAACI OsakaAACO JPAAGP Nagasaki; Eiji Osaka JPAANM Sasaki; KenjiAACI KyotoAACO JPAAGP Sasaki; Kenji Kyoto JPAANM Shinano; FumioAACI OsakaAACO JPAAGP Shinano; Fumio Osaka JP - A lens barrel ( | 01-17-2013 |
20130070345 | LENS BARREL AND LENS UNIT - A lens barrel and a lens unit of the present invention each include a cam drum having a cam groove, a lens holding frame for holding a moving lens group, and a cam follower installed on an outer periphery of the lens holding frame. The cam groove has two groove side walls, and an inclined wall that extends outward in a radial direction of the cam drum from one of the two groove side walls to the other thereof, and the cam follower has a contact member that contacts the inclined wall and a cam follower main unit respectively, and a biasing member that biases the contact member outward in the radial direction. | 03-21-2013 |
20130083406 | LENS STRUCTURE - A lens structure is provided. The lens structure comprises a first barrel, a second barrel and a third barrel. The first barrel has a first groove and comprises a first pin. The second barrel has a second groove and comprises a second pin. The third barrel has a third groove. The first barrel is rotatably disposed outside of the third barrel. The second barrel is disposed in the inside of the third barrel. The second pin of the second barrel slides along the third groove of the third barrel and the first groove of the first barrel. The first pin of the first barrel slides along the second groove of the second barrel. | 04-04-2013 |
20130100540 | LENS BARREL - The lens barrel includes a first frame, a second frame, a drive actuator, and a transmission mechanism that transmits the drive force of the drive actuator. The second frame includes a substantially cylindrical main body, a gear portion, and cam grooves that include an inflection point in the range in which the zoom ratio of the optical system is varied. The transmission mechanism includes a first transmission gear portion that engages with a gear, a second transmission gear portion that is provided coaxially with the first transmission gear portion, and a clutch between the first transmission gear portion and the second transmission gear portion. The clutch temporarily disengages the drive force of the drive actuator transmitted to the first transmission gear portion, only with respect to rotation in one direction. | 04-25-2013 |
20130120856 | LENS BARREL - A lens barrel includes a zoom optical system in which a focal distance is changeable; a first group frame moving together with the first lens group; and first and second cam mechanisms transmitting drive force to the first group frame. In a zoom region, each of a first group cam groove and a cam slot includes a first section, a second section which adjoins the first section and has an absolute value of a gradient smaller than that of the first section, and the third section which adjoins the second section and has the absolute value of the gradient larger than that of the second section, and in which a sign of the gradient is the same as that of the first section. A distance from an imaging surface to the first group frame in the optical axis direction has a local minimum in the second section. | 05-16-2013 |
20130120857 | LENS BARREL - A lens barrel capable of distributing, upon receipt of the impact of, e.g., dropping, a torque load so as not to concentrate on a particular linear movement key and groove for linearly moving a barrel member, thereby suppressing occurrence of a failure. The lens barrel has a fixed barrel ( | 05-16-2013 |
20130155525 | LENS DRIVING MODULE AND IMAGE PICKUP APPARATUS THEREOF - A lens driving module and an image pickup apparatus thereof include a driving barrel, a first zooming barrel, a second zooming barrel and a focusing barrel. An inner wall of the driving barrel has at least one first groove, at least one second groove and at least one controlling convex dot. The first zooming barrel, the second zooming barrel and an outer wall of the focusing barrel have at least one first-direction convex dot, at least one second-direction convex dot and at least one third groove respectively. At least one first-direction convex dot, at least one second-direction convex dot and at least one controlling convex dot are inserted in at least one first groove, at least one second groove and at least one third groove respectively. When the driving barrel is rotated, the lens driving module performs a zooming or focusing operation by each groove and each convex dot. | 06-20-2013 |
20130176630 | Lens with single detection member shared to perform focusing and zooming operations and reset method thereof - A lens with a single detection member shared to perform focusing and zooming operations includes a base, a detection member, a focusing unit and a zooming unit. The focusing unit includes a focusing group frame and a focusing detection board. The zooming unit includes a zooming group frame and a zooming detection board. In a reset method, a signal read from the detection member is a light-passing signal or a light-shielding signal, the focusing group frame and the zooming group frame are in any position. With the focusing group frame of the focusing unit and the zooming group frame of the zooming unit, the any position of the focusing group frame and the zooming group frame can be determined, and then the focusing group frame and the zooming group frame are driven to reset as a predetermined standby position. | 07-11-2013 |
20130194680 | LENS BARREL - A lens barrel includes a fixed frame, a rotary frame provided inside the fixed frame, a first frame provided inside the rotary frame, an electronic component provided inside the first frame, and a flexible printed circuit board connected, at one end thereof, to the electronic component and connected, at the other end thereof, to the fixed frame. A gear part is provided at an outer circumferential surface of the rotary frame. In the first frame, a first protrusion outwardly protruding beyond the gear part in a radial direction about the optical axis is provided at a position corresponding to the flexible printed circuit board in a circumferential direction about the optical axis on a side of the gear part opposite to the object in the optical axis direction. | 08-01-2013 |
20130242410 | Zoom Lens Device - A zoom lens device includes a base barrel, first and second cam barrels connected rotatably to and movable relative to the base barrel, first and second lens barrels connected respectively to the first and second cam barrels, and a driving barrel surrounding and rotatable relative to the base barrel. Rotation of the driving barrel drives the first and second cam barrels to rotate synchronously and move individually along an axis, and therefore causes individual axial movements of the first and second lens barrels along the axis. | 09-19-2013 |
20130308203 | LENS BARREL - The lens barrel includes a moving frame, a drive frame, and a rectilinear guide frame. The drive frame includes a cam mechanism and guides the moving frame in the optical axis direction with the cam mechanism. The rectilinear guide frame supports the moving frame so that the moving frame moves in the optical axis direction but doesn't rotate. The drive frame includes a rotary guide portion. The rotary guide portion supports the rectilinear guide frame so that the rectilinear guide frame rotates with relative to the cam mechanism and doesn't move relatively in the optical axis direction. The rotary guide portion is disposed on the outer peripheral side of the cam mechanism and on the outer peripheral side of the moving frame. A holding space is formed between the cam mechanism and the rotary guide portion. Part of the moving frame is inserted into the holding space. | 11-21-2013 |
20130314802 | LENS BARREL - A lens barrel includes a first frame and a second frame. The first frame includes a plurality of cam grooves. The second frame includes a plurality of cam followers that engage with each of the plurality of cam grooves, and a gear portion. In this case, if rotational force is transmitted to the gear portion, the second frame moves in the optical axis direction while rotating with respect to the first frame. At least one of the plurality of cam followers is disposed on the image plane side of the gear portion. | 11-28-2013 |
20130342917 | LENS BARREL - A lens barrel of the present invention includes: a fixing frame having a plurality of cam grooves that are formed an inner circumferential surface of the fixing frame and also having a protrusion provided between any adjacent two of the cam grooves among a plurality of the cam grooves; and a drive frame having cam followers that are provided to an outer circumferential surface of drive frame, are engaged with the cam grooves, and are movable along the cam grooves. With this configuration, when an external force is applied to the drive frame, an end portion of the drive frame comes into contact with the protrusion to prevent the cam followers from coming out of the cam grooves. | 12-26-2013 |
20140063615 | LENS BARREL - A lens barrel includes an outer barrel including a first cam follower, an internal movable member including a second cam follower, a cam ring, a first cam groove formed on a surface of the cam ring and engaged with the first cam follower, and a second cam groove formed on the surface of the cam ring and is open at a front end of the cam ring. When the outer barrel is positioned in front of a predetermined position, the second cam groove determines a position of the internal movable member in the outer barrel via a limit portion while the second cam groove is not engaged with the second cam follower, and when the outer barrel moves rearward beyond the predetermined position, the second cam groove engages with the second cam follower and moves the internal movable member rearward. | 03-06-2014 |
20140092486 | LENS BARREL AND OPTICAL APPARATUS - Provided is a lens barrel capable of providing good operational feeling, the lens barrel including: a first barrel in which a cam groove having a shape curved with respect to a predetermined axis direction is formed to pierce through the first barrel; a second barrel capable of rotating around the predetermined axis along an outer circumferential surface of the first barrel, a straight groove extending in the predetermined axis direction being formed in the second barrel; a moving member that has a cam pin moving along the cam groove and the straight groove and moves in the predetermined axis direction while holding a lens inside the first barrel as the second barrel rotates with respect to the first barrel; and a damping mechanism that applies damping force depending on an angle of the cam groove to the predetermined axis direction to the second barrel. | 04-03-2014 |
20140098427 | ZOOM LENS BARREL ASSEMBLY AND CAPTURING APPARATUS INCLUDING THE SAME - A zoom lens barrel assembly includes: a first zoom ring that supports a first lens group; a first guide ring, of which the first zoom ring is disposed on an inner side, is cam-connected to the first zoom ring to cause the first lens group to move linearly along an optical axis direction by rotation; a second zoom ring that supports a second lens group and is cam-connected to the first guide ring to move linearly along the optical axis direction; a second guide ring cam-connected to the first guide ring and configured to move linearly along the optical axis direction to rotate the first guide ring; a second cylinder configured to move linearly along the optical axis direction together with the second zoom ring while being rotated; and an external cylinder including a third lens group and is cam-connected to the second cylinder to cause the second cylinder to rotate. | 04-10-2014 |
20140118842 | LENS BARREL - A lens barrel of the present invention comprises: first and second guide shafts arranged parallel to an optical axis X and provided in one of adjacent lens holding frames; first and second guide receiving holes formed in another of the adjacent lens holding frames for allowing the first and second guide shafts to be inserted therethrough and guided by the first and second guide shafts respectively; a first urging means of urging the one and the another of the adjacent lens holding frames along the direction of the optical axis; and a second urging means to rotate another of the adjacent lens holding frames in a circumferential direction of the first guide shaft. The first guide receiving hole is guided by the first guide shaft at two positions that are spaced apart from each other in the direction of the optical axis. | 05-01-2014 |
20140133037 | LENS BARREL CAPABLE OF INCREASING SHOOTING MAGNIFICATION WHILE BEING MINIATURIZED, AND IMAGE PICKUP APPARATUS - Lens barrel capable of increasing shooting magnification while being miniaturized. A first lens group is caused to move in a direction of an optical axis by rotation of a second cam ring following rotation of a drive ring which has a focus cam groove on an inner periphery and is disposed on an outer periphery of a fixed cam ring having a cam groove and a rectilinear groove on an inner periphery. A second cam groove is disposed behind the first lens group in the direction of the optical axis. Rotation of the drive ring causes a follower of a focus group holding unit, which holds the second lens group, to follow the focus cam groove while being guided to move rectilinearly by the rectilinear groove. The follower following the focus cam groove causes the focus group holding unit to move in the direction of the optical axis. | 05-15-2014 |
20140146398 | LENS BARREL AND IMAGE PICKUP APPARATUS - A lens barrel includes a cam ring configured to be rotatably driven, a lens holding cylinder provided on an outer circumference of the cam ring and configured to hold a lens, and a barrier cylinder configured to hold a lens barrier, the barrier cylinder includes a cylinder portion, a first protrusion which extends from the cylinder portion toward an image plane side, and a cam engagement portion which is engaged with a cam groove of the cam ring, the lens holding cylinder includes a cylinder portion and a second protrusion which extends from the cylinder portion toward the image plane side, and the second protrusion of the lens holding cylinder is arranged so as to overlap with the cam engagement portion of the barrier cylinder in a radial direction orthogonal to an optical axis direction. | 05-29-2014 |
20140204471 | LENS BARREL - A lens barrel has a rotary frame, lens group frame, and shutter frame. The rotary frame has first and second cam grooves respectively on inner and outer peripheries as viewed in a radial direction. A first cam follower of the lens group frame and a second cam follower of the shutter frame are respectively engaged with the first and second grooves. A radial direction size the rotary frame is smaller than a sum of depths of the first and second grooves. The rotary frame includes a first region W | 07-24-2014 |
20140233109 | STRUCTURE AND METHOD FOR COMPENSATING TEMPERATURE DEPENDENT MAGNIFICATION AND FOCUS CHANGE - A method and device is described for compensating ambient temperature dependent magnification and focus change of a zoom lens system, whereby an ambient temperature compensation structure cooperates with a rotational ring and an optical-element adjusting member such that a phase variation between the rotational ring and the optical-element adjusting member in response to an ambient temperature change is compensated and whereby the phase variation characterizes an optical property of the zoom lens system such as magnification or focus. | 08-21-2014 |
20140307331 | ZOOM-TYPE LENS BARREL AND IMAGE PICKUP APPARATUS - A lens barrel which is capable of increasing zoom rate and slimming down a lens barrel, and by extension an image pickup apparatus while reducing the size of the lens barrel in a radial direction without decreasing the lens diameter of a retractable lens which retracts outwardly in a radial direction when the lens barrel is collapsed. A first lens holding frame holds a first lens, and a second lens holding frame holds a second lens. The first lens holding frame follows a cam groove, which is formed in a cam cylinder, to move in a direction of an optical axis. In a shooting state, the second lens is disposed on the optical axis. In a retracted state, the second lens is disposed at a position retracted outwardly in a radial direction from the center of the optical axis and on a rear surface of the cam cylinder. | 10-16-2014 |
20140313593 | LENS HOLDING STRUCTURE AND METHOD OF MANUFACTURING LENS HOLDING STRUCTURE - The lens holding structure of the disclosure includes a lens; and a holding frame including a seat surface and holding the lens, wherein an inclination in a yaw direction and an inclination in a pitch direction of the lens in a state where the lens is brought into contact with the seat surface are substantially equal to an inclination in a yaw direction and an inclination in a pitch direction of the lens in a state where the lens is held by the holding frame, and a clearance is formed between the lens and the seat surface. | 10-23-2014 |
20140320979 | Zoom Lens and Cam Frame Thereof - A cam frame of a zoom lens is provided. The cam frame includes an end surface, a first cam groove including a first connecting portion, a second connecting portion and a zooming-collapsing operation portion connected between the first connecting portion and the second connecting portion, an introducing groove connecting the end surface and the first connecting portion, a second cam groove, and a first connecting groove connecting the second connecting portion and the second cam groove. | 10-30-2014 |
20140327973 | Optical Device - An optical device includes a first lens frame bearing a first lens set and having a plurality of rods, a first cam barrel rotating to move the first lens frame along a first axis, a second lens frame bearing a second lens set and having a plurality of holes corresponding to the rods, and a second cam barrel rotatably disposed around the first cam barrel to rotate the first cam barrel and move the second lens frame along a second axis parallel to the first axis, wherein the first axis is substantially coincident with the second axis with the rods inserted into the holes. | 11-06-2014 |
20140347742 | LENS BARREL - A lens barrel includes: a lens holder which holds a lens group and includes a cam follower; a rotating cylinder including on a circumferential surface thereof a cam groove; a guide member to which the rotating cylinder is rotatably provided, which guides the lens holder to move in an optical axis direction; and a transmission member which transmits a drive force outputted from a drive source to the rotating cylinder. When the drive force is transmitted and the rotating cylinder rotates, the lens holder is guided in the optical axis direction and the cam groove has contact with the cam follower, and thereby the lens holder moves back and forth in accordance with a rotation posture of the rotating cylinder. The transmission member is provided on a more inner side than one, which is provided on an outermost side, of the lens holder, the guide member, and the rotating member. | 11-27-2014 |
20140355132 | Optical Device - In an optical device, a first spring connects a first lens frame and a second lens frame for exerting a spring force thereon so that first pins of the first lens frame and second pins of the second lens frame abut a first cam groove and a second cam groove of a cam barrel respectively. A second spring connects the second lens frame and a third lens frame for exerting a spring force thereon so that the second pins of the second lens frame and third pins of the third lens frame abut the second cam groove and a third cam groove of the cam barrel respectively. The first spring may be a compression spring, and the second spring may be an extension spring. | 12-04-2014 |
20140355133 | LENS BARREL - With a lens barrel, the depth of a first cam groove is substantially the same as the depth of a second cam groove. The length of a first cam protrusion in a first direction is greater than the length of the second straight portion in the first direction. The length of a second cam protrusion in a second direction is greater than the length of a first straight portion in the second direction. | 12-04-2014 |
20140376103 | LENS BARREL - This disclosure provides a lens barrel which can realize miniaturization thereof in a radial direction even when a drive part such as an actuator is disposed inside the lens barrel. The lens barrel according to this disclosure receives light from a subject and forms an image by a lens system. The lens barrel includes a fixed frame, a cam frame disposed on an inner peripheral side of the fixed frame and having at least one cam groove, a movable frame including a cam pin which engages with the cam groove of the cam frame and movable in an optical axis direction of the lens system, and a drive part engaging with the cam frame at an end portion of the cam frame, rotatably driving the cam frame, and being disposed at a position where the drive part and the cam frame are arranged in the optical axis direction. | 12-25-2014 |
20140376104 | LENS BARREL - This disclosure aims to miniaturize a lens barrel. The lens barrel includes: a movable frame which has two cam followers provided in a circumferential direction about an optical axis and two guide protrusions arranged along an optical axis direction; a cam frame having two cam grooves with which the two cam followers of the movable frame are engaged respectively; and a guide frame having one guide groove with which the two guide protrusions are engaged. The two cam followers and the two guide protrusions restrict tilting of the movable frame with respect to the cam frame and the guide frame. | 12-25-2014 |
20150022903 | LENS BARREL - Provided is a lens barrel whose diameter can be reduced. The lens barrel includes a rotary frame having a gear on an inner peripheral surface, and a retracting lens frame which holds a retracting lens configured to retract from an optical axis along with rotation of the rotary frame. A position where the retracting lens retracts is where the gear of the rotary frame is located when the retracting lens is positioned on the optical axis. The rotary frame includes a first cam groove on an outer peripheral surface, and a second cam groove on the inner peripheral surface. The lens barrel also includes a first lens frame having a first cam follower which is mounted on the first cam groove, and a second lens frame having a second cam follower which is mounted on the second cam groove. The retracting lens frame is held by the second lens frame. | 01-22-2015 |
20150036227 | OPTICAL DEVICE HAVING IMPROVED IMPACT RESISTANCE - An optical device whose impact resistance against an impact improved without increasing the size thereof. A first-group lens barrel holds has radially protruding follower pins formed thereon. A cam ring is disposed outside the first-group lens barrel, and has cam grooves formed therein for engagement with the follower pins. A diaphragm unit disposed rearward of the first-group lens barrel and a second-group lens barrel disposed rearward of the diaphragm unit move in the optical axis direction. When the diaphragm unit and the second-group lens barrel move in the optical axis direction, the optical device is switched between a wide angle position in which first protrusions formed on the diaphragm unit are positioned inside the follower pins and a telephoto position in which third protrusions formed on the second-group lens barrel are positioned inside the same. | 02-05-2015 |
20150043088 | LENS BARREL AND IMAGING APPARATUS - A lens barrel includes a cam cylinder that is provided with a cam groove on the inner circumference thereof and a linear cylinder that restricts movement of the lens holding unit. A plurality of bayonet protrusions are provided on the linear cylinder at different positions in the optical axis direction. A plurality of bayonet grooves that engage with the bayonet protrusions provided on the linear cylinder so as to achieve the relative position restriction between the cam cylinder and the linear cylinder in the optical axis direction are further provided on the inner circumference of the cam cylinder. In accordance with the relative rotation of the cam cylinder with respect to the linear cylinder, the relative position restriction between the cam cylinder and the linear cylinder due to the engagement of the bayonet protrusions with the bayonet grooves is changed to position restriction depending on the relative rotation. | 02-12-2015 |
20150043089 | LENS BARREL AND IMAGING APPARATUS - A lens barrel is provided that includes a lens holding unit configured to hold a lens; and a cam cylinder that is provided with a cam groove for engaging with the lens holding unit on the inner circumference thereof and of which rotation causes the lens holding unit to move in an optical axis direction. A projection is provided at the end of the cam cylinder on an imaging side, a first gear for transmitting the power for rotating the cam cylinder is provided on the outer circumferential surface of the projection, and the cam groove is provided on the inner circumferential surface of the projection. | 02-12-2015 |
20150070782 | LENS BARREL AND IMAGING APPARATUS - A lens barrel includes a first barrel which rotates around an optical axis; and a second barrel which supports the first barrel to slide freely around the optical axis and to be movable in an optical axis direction. One of the barrels includes a cam follower, and a cam groove is formed in the other. When the first barrel rotates, the cam follower slides in the cam groove. The cam groove includes first and second sliding portions, and an inclination angle of the first sliding portion to the optical axis is smaller than that of the second sliding portion. When transitioning from the collapsed to the photographing state, the cam follower slides on the first sliding portion and the first barrel extends. When transitioning from the photographing to the collapsed state, the cam follower slides on the second sliding portion and the first barrel is incorporated in the second barrel. | 03-12-2015 |
20150092282 | LENS BARREL AND ELECTRONIC APPARATUS - A lens barrel of the present invention is a lens barrel holding a photographing optical system which is a zoom lens constituted by five groups and includes: a cylindrical cam barrel arranged to be rotatable around an optical axis; a first lens driving section driving the cam barrel around the optical axis; a plurality of first cam grooves carved on an outer circumferential surface of the cam barrel; and a plurality of second cam grooves carved on an inner circumferential surface of the cam barrel. A first lens group holding barrel has a plurality of cam followers that are recessed in the first cam grooves; and each of a second lens group holding barrel and a third lens group holding barrel has a plurality of cam followers that are recessed in the second cam grooves. | 04-02-2015 |
20150124331 | LENS BARREL - A lens barrel includes a cam frame, a zoom motor unit driving the cam frame to rotate, and a fifth group unit engaging with the cam frame through a fifth cam follower. The cam frame is provided with an internal gear engaging with the zoom motor unit, and a fifth cam groove engaging with the fifth cam follower. The fifth cam groove is continuous with a tooth space formed between two adjacent teeth of the internal gear. The fifth cam follower is smaller than the tooth space to pass through the tooth space. | 05-07-2015 |
20160041364 | LENS BARREL - A lens barrel of the present invention includes a first barrel member on which a first cam groove is formed and which is provided with a first cam follower, and a second barrel member on which a second cam follower to engage with first cam groove is formed, and which is provided with a second cam groove to engage with first cam follower, the second barrel member performing relative rotation and relative movement in an axis direction of the rotation with respect to the first barrel member. | 02-11-2016 |
20160077304 | LENS BARREL AND OPTICAL APPARATUS - The lens barrel includes a base barrel, a movable barrel including first and second hole portions, a circumferentially rotatable barrel and first guide members. The base barrel includes straight guide portions guiding the movable barrel along an optical axis, the rotatable barrel includes cam portions moving the movable barrel with rotation of the rotatable barrel, the first guide members engage with the cam and straight guide portions. The cam portions, straight guide portions and first guide members are respectively provided at multiple circumferential phases, a guide member among the first guide members provided at a first phase engages with the first hole portion, each of other guide members among the first guide members provided at two or more second phases engages with each of the second hole portions. A circumferential width of each second hole portion is larger than that of the first hole portion. | 03-17-2016 |
20160077306 | LENS BARREL - A lens barrel in which a lens can be moved in a direction parallel to an optical axis includes: a first frame having a cam follower and a cam follower base that holds the cam follower; and a second frame that has a cam groove engageable with the cam follower. The first frame and the second frame are moved relatively to each other along the optical axis. The cam follower base has a first end connected to the main body of the first frame via at least one thin portion, and a second end not connected to the main body. The thin portion is formed such that a thickness of the thin portion in a radial direction of the lens barrel is smaller than that of the cam follower base. | 03-17-2016 |
20160077408 | LENS BARREL - A lens barrel of this technique includes a movable lens barrel unit section, and a master flange unit having a lens unit, and is switched between a collapsed state where the movable lens barrel unit section is stored in the master flange unit and an extended state where the movable lens barrel unit section is extended from the master flange unit. The master flange unit has a moving frame supported to be movable in an optical axis direction via a first elastic member extendable in the optical axis direction, and a lens frame supported to be movable in the optical axis direction via a second elastic member extendable in the optical axis direction relative to the moving frame. In the collapsed state, the movable lens barrel unit section presses the lens frame such that the moving frame and the lens frame get closer to the master flange against repulsive forces of the first elastic member and the second elastic member. | 03-17-2016 |
20160124179 | LENS BARREL AND OPTICAL APPARATUS - A lens barrel, in one configuration, includes: a first barrel in which a cam groove having a shape curved with respect to a predetermined axis direction is formed to pierce through the first barrel; a second barrel capable of rotating around the predetermined axis along an outer circumferential surface of the first barrel, a straight groove extending in the predetermined axis direction being formed in the second barrel; a moving member that has a cam pin moving along the cam groove and the straight groove and moves in the predetermined axis direction while holding a lens inside the first barrel as the second barrel rotates with respect to the first barrel; and a damping mechanism that applies damping force depending on an angle of the cam groove to the predetermined axis direction to the second barrel. | 05-05-2016 |
20160161704 | LENS BARREL - A lens barrel includes a barrel-shaped first barrel having a pair of cam grooves that have two cam locus curves congruent with each other and are separated from each other on a circumferential surface, and a second barrel that has a pair of cam pins formed of a first cam pin that is engaged with one of the pair of cam grooves and a second cam pin that is engaged with another of the pair of cam grooves, and an urging portion that urges the first cam pin in a radial direction of the first barrel, and moves in an optical axis direction relatively to the first barrel, and is configured such that in engagement of the pair of cam pins and the pair of cam grooves, a disposition distance between the pair of cam pins differs from a disposition distance between the pair of cam grooves. | 06-09-2016 |
20160170171 | LENS BARREL AND OPTICAL APPARATUS HAVING THE SAME | 06-16-2016 |
20160170172 | LENS BARREL AND OPTICAL APPARATUS HAVING THE SAME | 06-16-2016 |