Class / Patent application number | Description | Number of patent applications / Date published |
359701000 | Cam ring type or zoom ring type | 19 |
20090059390 | Lens barrel and imaging apparatus - A lens barrel includes at least two cam tubes, and an operation based on the rotation of an operation ring actuates the two cam tubes to move a lens group. The lens barrel includes a first cam tube that drives part of the lens group in response to an operation based on the rotation of the operation ring, and a second cam tube that moves part of the lens group in the optical axis direction in response to the operation based on the rotation of the operation ring. The second cam tube rotates at a speed different from that of the first cam tube. | 03-05-2009 |
20090116122 | INTERNAL FOCUSING ZOOM LENS - An internal focusing zoom lens includes a stationary barrel including a focus-guide cam groove; a zoom cam ring including a focus-shift cam groove and rotated about an optical axis during zooming; a focus cam ring including a focus cam groove and rotated about the optical axis and moved in the optical axis direction to move a focusing lens group during focusing; and a focus correction ring for moving the focus cam ring in the optical axis direction by rotation of the zoom cam ring. The focus correction ring includes a focus correction cam-follower engaged in the focus-shift cam groove, the focus cam groove and the focus-guide cam groove. A position of the focus correction cam-follower in the focus cam groove changes via the focus-shift cam groove and the focus-guide cam groove in accordance with the rotation of the zoom cam ring during zooming. | 05-07-2009 |
20100033845 | Inner focusing zoom lens - The present invention is directed to an improved inner focusing zoom lens barrel that implements a zoom ratio as high as | 02-11-2010 |
20100214672 | LENS BARREL AND IMAGING DEVICE PROVIDED WITH LENS BARREL, AND ASSEMBLY METHOD OF LENS BARREL - It is an object of the present invention to provide a lens barrel in which operability for a user is increased and a reduction in parts is achieved while provided with a manual operating member. There is provided the lens barrel that is provided with an imaging optical system for forming an optical image of an object, a focus lens unit which is included in the imaging optical system and capable of changing an object distance by moving in a direction parallel to an optical axis of the imaging optical system, moving means for moving the focus lens unit in the direction parallel to the optical axis, driving means for driving the moving means, a focus ring which is of a cylindrical shape coaxial to the optical axis of the imaging optical system and manually operated in a rotational manner in order to drive the driving means to thereby move the focus lens unit by the moving means, and a focus mode switching button which is integrally provided in the focus, and operated in order to switch between a state of allowing a manual rotating operation of the focus ring and a state of preventing the manual rotating operation. | 08-26-2010 |
20100328786 | RETRACTABLE ZOOM LENS HAVING A VARIABLE APERTURE-STOP MECHANISM - A zoom lens includes a variable aperture-stop mechanism positioned in front or behind an aperture-control lens group; a first rotation imparting member, which rotates an opening/closing ring of the variable aperture-stop mechanism by a relative movement between the variable aperture-stop mechanism and the first rotation imparting member in the optical axis direction so as to hold an adjustable aperture of the variable aperture-stop mechanism at a small aperture size when the aperture-control lens group moves within in the zooming range; and a second rotation imparting member, which rotates the opening/closing ring by a relative movement between the variable aperture-stop mechanism and the second rotation imparting member to open and hold the adjustable aperture at a large aperture size when the aperture-control lens group moves to the accommodated position, at which the aperture-control lens group is partly positioned in the adjustable aperture held at the large aperture size. | 12-30-2010 |
20110032627 | LENS BARREL AND OPTICAL APPARATUS INCLUDING THE SAME - A lens barrel includes lens units movable in an optical axis direction, a driving unit including an annular actuator in which an optical axis serves as a rotation center, a first cam cylinder disposed inwardly of the annular actuator and including a circular cylindrical base portion and a large-diameter portion, a second cam cylinder configured to drive at least one of the lens units by rotating at an outer-peripheral side of the large-diameter portion, and a rotation transmitting portion provided at the large-diameter portion and transmitting rotation of the first cam cylinder to the second cam cylinder, wherein, in a state in which the length of the lens barrel is shortest, a portion of the second cam cylinder and the rotation transmitting portion overlap in the optical axis direction a lens unit holding frame that is closest to an object side. | 02-10-2011 |
20110273782 | LENS BARREL AND IMAGING DEVICE - A lens barrel having an image forming optical system including a first optical system and a second optical system which is moveable independently from the first optical system, a first driving portion which drives the first optical system during a magnification changing operation of the image forming optical system, and a second driving portion which drives the second optical system during the magnification changing operation, along with driving the second optical system during a focus adjustment of the image forming system. | 11-10-2011 |
20120013997 | FISHEYE ZOOM LENS BARREL HAVING MARKS ON ZOOM OPERATION RING - A zoom lens barrel includes a fixed barrel in which a first mark is indicated, and a zoom operation ring in which a second mark is indicated, the zoom operation ring being supported on the fixed barrel. The zoom lens barrel has a focal length region where at least angles of view of a circular fisheye and a full-frame fisheye can be formed, and one of the angles of view of the circular fisheye and the full-frame fisheye is formed for a predetermined image-pickup element size in a focal length where the first mark and the second mark are matched to each other. | 01-19-2012 |
20120154928 | LENS BARREL AND OPTICAL APPLIANCE - A lens barrel includes a first retaining member to retain a first driving unit, a second retaining member to retain a second driving unit, a fixing cylinder in which the first retaining member and the second retaining member are disposed adjacent to each other in an optical axis direction, and a cam cylinder disposed about an outer circumference of the fixing cylinder rotatable in a circumferential direction, and the first and the second retaining members are moveable in the fixing cylinder following a same trajectory according to a rotation of the cam cylinder. | 06-21-2012 |
20120194919 | ZOOMING ADJUSTMENT MECHANISM AND PROJECTION LENS MODULE - A zooming adjustment mechanism including a holder, a zoom ring, at least two rollers, a first resilient sheet, and a second resilient sheet is provided. The zoom ring is confined to the holder and coupled to a zoom bar. The rollers are respectively confined to a groove of the holder and in contact with a bottom surface of the zoom ring. The first resilient sheet is disposed on a first side of the holder, and each end of the first resilient sheet leans against a roller. The second resilient sheet is disposed on a second side of the holder, and each end of the second resilient sheet leans against a roller. A projection lens module including the zooming adjustment mechanism is also provided. | 08-02-2012 |
20120206820 | ZOOM LENS BARREL ASSEMBLY - A zoom lens barrel assembly including: a first zoom ring comprising a first protrusion; a guide ring disposed around the first zoom ring comprising a first guide slot through which the first protrusion passes, and a second guide slot; a second zoom ring comprising a second protrusion, and movable in an axial direction; a first cylinder comprising a guide groove into which the second protrusion inserts, and a third protrusion passing through the second guide slot, and disposed between the first and second zoom rings; a second cylinder disposed around the guide ring comprising a fourth protrusion, a first groove portion into which the first protrusion inserts, and a second groove portion into which the third protrusion inserts, and supporting the first zoom ring and the first cylinder; and an external cylinder disposed around the second cylinder and comprising a third groove portion into which the fourth protrusion inserts. | 08-16-2012 |
20120206821 | ZOOM LENS BARREL ASSEMBLY - A zoom lens barrel assembly includes: a zoom ring having a cylindrical shape, and comprising an inlet portion formed in a boundary of one end thereof and a first protrusion; a guide ring disposed around the zoom ring, and comprising a first guide hole through which the first protrusion passes, and movably supporting the zoom ring in an axial direction, and a second guide hole; and a cylinder disposed in the zoom ring, for moving and rotating between a position where the cylinder is accommodated in the zoom ring and a position where the cylinder moves away from the zoom ring in the axial direction, and comprising a second protrusion that passes through the second guide hole, accommodated in the inlet portion at the position where the cylinder is accommodated, and pressing one end of the inlet portion when the cylinder moves away from the zoom ring. | 08-16-2012 |
20120257286 | LENS BARREL AND OPTICAL APPARATUS INCLUDING THE SAME - A lens barrel includes lens units movable in an optical axis direction, a driving unit including an annular actuator in which an optical axis serves as a rotation center, a first cam cylinder disposed inwardly of the annular actuator and including a circular cylindrical base portion and a large-diameter portion, a second cam cylinder configured to drive at least one of the lens units by rotating at an outer-peripheral side of the large-diameter portion, and a rotation transmitting portion provided at the large-diameter portion and transmitting rotation of the first cam cylinder to the second cam cylinder, wherein, in a state in which the length of the lens barrel is shortest, a portion of the second cam cylinder and the rotation transmitting portion overlap in the optical axis direction a lens unit holding frame that is closest to an object side. | 10-11-2012 |
20130135753 | ZOOM LENS STRUCTURE AND CAMERA LENS - This invention discloses a zoom lens structure and a camera lens. The zoom lens structure comprises a shifting barrel, a zoom-driving ring, a fixed barrel and a focus-driving ring. The shifting barrel has a first guiding protrusion. The zoom-driving ring is arranged at a periphery of the shifting barrel, and having a groove-hole and a first-driving part. The fixed barrel is arranged at a periphery of the zoom-driving ring, and having a first groove. The first guiding protrusion is passed through the groove-hole and inserted into the first groove. The focus-driving ring is coupled to an end of the zoom-driving ring and having a second-driving part at the outer edge thereof. By a driving module driving the first-driving part and the second-driving part at the same time, the zoom-driving ring and the focus-driving ring are rotated forwardly or reversely for zooming or focusing. | 05-30-2013 |
20130308204 | LENS BARREL AND IMAGING DEVICE - A lens barrel having an image forming optical system including a first optical system and a second optical system which is moveable independently from the first optical system, a first driving portion which drives the first optical system during a magnification changing operation of the image forming optical system, and a second driving portion which drives the second optical system during the magnification changing operation, along with driving the second optical system during a focus adjustment of the image forming system. | 11-21-2013 |
20140078599 | LENS ADVANCING DEVICE, IMAGING DEVICE EQUIPPED WITH LENS ADVANCING DEVICE, AND PORTABLE ELECTRONIC DEVICE - A lens advancing device of the present invention includes an advancing ring holding the lens unit; a holder supporting the advancing ring; an operation unit; and a came surface formed on one of the advancing ring and the holder, and an abutting part formed on the other of the advancing ring and the holder and is engageble with the cam surface. The lens unit is disposed along an optical axis by rotating the advancing ring and thereby changing the engaging position between the cam surface and the abutting part. The lens advancing device further includes a pressing part retaining the elastic body be abutment to make the elastic body exert the elastic force upon the advancing ring and press the abutting part against the came surface. This reduces changes of resistance in rotational operation of the advancing ring between photographing modes, which makes the user feel less uncomfortable. | 03-20-2014 |
20150029598 | Variable rate focus mechanism - A focus mechanism has a removable and replaceable cam that allows selection of different rates of rotation and total axial displacement of a lens assembly. The rate and displacement are determined by the cam profile. The rate and displacement of the lens assembly can be selected by removing a cam with one profile and replacing it with another similar cam having a different profile. Rotation of an outer ring is coupled to the cam with drive pins. | 01-29-2015 |
20150092283 | IMAGING LENS BARREL - An appropriate operation angle (actuation angle) corresponding to a use is obtained by a relatively simple structure. | 04-02-2015 |
20150331221 | CHANGEABLE LENS BARREL - A changeable lens barrel includes a fixed barrel formed in an annular shape a straight-advancing barrel housed in the fixed barrel during non-photographing and extended to an outside of the fixed barrel during photographing, and a first annular member that turns according to manual operation. When the changeable lens barrel is in a photographable state, a part of an outer circumference of the first annular member is exposed to an outside and a front end face of the annular member forward in an optical axis direction is located further forward than a front end face of the fixed barrel, and, when the changeable lens barrel is in an un-photographable state, a rear end face backward in the optical axis direction is within the fixed barrel and the rear end face is present further backward in the optical axis direction than when the changeable lens barrel is in the photographable state. | 11-19-2015 |