| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 359749000 | Reverse telephoto | 60 |
| 20090002849 | Wide-angle lens system - There is provided a wide-angle lens system having a wide angle of view and less distortion. The wide-angle lens system including: an object-side lens group disposed at an object side with respect to an aperture stop and having overall positive refractive power; and an image-side lens group disposed at an image side with respect to the aperture stop and having overall positive refractive power, wherein a focal length ratio between the object-side lens group and the image-side lens group satisfies following condition 1, | 01-01-2009 |
| 20090116127 | SUPER-WIDE-ANGLE LENS AND IMAGING SYSTEM HAVING SAME - An exemplary super-wide-angle lens includes a lens barrel, a set of imaging lenses, and a prism. The set of imaging lenses is received in the lens barrel. The prism has three light incident surfaces, each of which is coated with a unique color filter for exclusively transmitting a predetermined color light, and a light emissive surface. The prism is positioned such that each of the light incident surfaces is configured for receiving light from a unique field of view of the super-wide-angle lens and the light emissive surface faces the set of imaging lenses, and is structured so that light transmitting in the prism is directed from the light incident surfaces to the light emissive surface. | 05-07-2009 |
| 20120057251 | Objective optical system - Provided is a high-performance objective optical system which is compatible with a high-pixel-count image acquisition device, in which focusing can be achieved according to a change in object point distance and which has sufficient depth of field at the individual object point distances. Provided is an objective optical system ( | 03-08-2012 |
| 20130057972 | SINGLE FOCUS LENS SYSTEM AND PHOTOGRAPHING APPARATUS INCLUDING THE SAME - A single focus lens system and a photographing apparatus including the single focus lens system are disclosed. A single focus lens system is provided that includes a first lens group having a negative refractive power, a stop, and a second lens group having a positive refractive power, sequentially arranged in order from an object side, wherein the first lens group comprises first and second air lenses having a negative refractive power, a meniscus shape and a convex surface toward the object side, and the second lens group comprises a lens that has a positive refractive power, is disposed closest to the object side, and has a convex surface toward the object side. | 03-07-2013 |
| 20130293971 | OPTICAL SYSTEM AND OPTICAL APPARATUS HAVING THE SAME - An optical system includes, in order from an enlargement conjugate side to a reduction conjugate side via a largest air gap, a front unit having a negative power, and a rear unit having positive power. The optical system satisfies 1.75| 11-07-2013 | |
| 20140218811 | ENDOSCOPE OBJECTIVE LENS AND ENDOSCOPE - The endoscope objective lens is configured such that focusing from the farthest object to the nearest object is achieved by moving at least one lens group other than the most object-side lens group along the optical axis. One of the at least one lens group to be moved during focusing is a negative lens group. The one negative lens group that is moved during the focusing consists of a cemented lens that is formed by a positive lens and a negative lens cemented together in this order from the object side. The cemented surface of the cemented lens is oriented such that the concave surface faces the object side. Given conditional expressions are satisfied. | 08-07-2014 |
| 20150022907 | OBJECTIVE LENS FOR ENDOSCOPE AND ENDOSCOPE - An objective lens for an endoscope performs focusing from a farthest point object to a nearest point object by moving, along optical axis Z, at least one lens group excluding a most object-side lens group. The following conditional formulas (1) and (2) are satisfied: | 01-22-2015 |
| 20150098138 | OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS INCLUDING THE SAME - An optical system includes, in order from object side: a positive first lens unit; and a positive second lens unit moving during focusing. The second lens unit includes, in order from object side, a front unit, an aperture stop, and a positive rear unit. The first unit includes a negative lens that has a convex surface facing object side and is arranged closest to object side, and three or more positive lenses on image side of the negative lens. A distance, on optical axis, from a lens surface on object side of a second positive lens counted from image side of the three or more positive lenses to a lens surface closest to image side of the first unit, and a distance, on optical axis, between a lens surface closest to object side and that closest to image side of the first unit are each appropriately set. | 04-09-2015 |
| 20150109689 | WIDE ANGLE LENS AND IMAGING APPARATUS - A wide angle lens includes a first lens group having negative refractive power, as a whole, a second lens group having positive refractive power, as a whole, and a third lens group having positive refractive power, as a whole, in this order from an object side. The first lens group includes a positive meniscus lens with its convex surface facing the object side and three negative meniscus lenses, each with its convex surface facing the object side, in this order from the object side. The second lens group includes at least one cemented lens. The material of at least one of the three negative meniscus lenses in the first lens group satisfies the following conditional expression (1), and the material of at least one of the other negative meniscus lenses in the first lens group satisfies the following conditional expressions (2) and (3): | 04-23-2015 |
| 20150109690 | WIDE ANGLE LENS AND IMAGING APPARATUS - A wide angle lens consists of a first lens group having negative refractive power as a whole, a second lens group having positive refractive power as a whole, and a third lens group having positive refractive power as a whole in this order from an object side. The first lens group consists of a positive meniscus lens with its convex surface facing the object side and three negative meniscus lenses, each with its convex surface facing the object side, in this order from the object side. The second lens group includes at least two cemented lenses. The third lens group consists of a 3a-th lens group consisting of a positive meniscus lens with its convex surface facing the object side and a 3b-th lens group that includes at least two cemented lenses and has positive refractive power as a whole, in this order from the object side. | 04-23-2015 |
| 20150116848 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens consists of a first lens group, a second lens group, an aperture stop and a third lens group that has positive refractive power in this order from an object side. The first lens group consists of an L11 lens having positive refractive power, an L12 lens having negative refractive power, an L13 meniscus lens having negative refractive power with its concave surface facing an image side, an L14 lens having negative refractive power with its concave surface facing the object side and two or three lenses, each having positive refractive power, in this order from the object side. The second lens group consists of an L2p lens having positive refractive power and an L2n lens having negative refractive power. | 04-30-2015 |
| 20160054544 | IMAGE-FORMING LENS, AND IMAGING APPARATUS AND INFORMATION DEVICE USING THE IMAGE-FORMING LENS - An image-forming lens includes, from an object side to an image side in order: a first lens group; an aperture; and a second lens group with a positive refractive power, the first lens group including, from the object side in order: a first F lens group with a negative refractive power; and a first R lens group with a positive refractive power, the first F lens group including, from the object side in order: a first negative lens; and a second negative lens, and the first R lens group including: any one of a positive lens and a cemented lens with a positive refractive power as a whole, wherein a distance from a surface on a most object side of the first lens group to an image plane in a state of focusing on an object at infinity: L, and a maximum image height: Y′ satisfy Conditional expression 1:2.8| 02-25-2016 | |
| 359751000 | With seven components | 2 |
| 20090052057 | WIDE ANGLE LENS MODULE AND VEHICLE VISION SYSTEM - A wide angle lens module includes a first lens and a second lens with negative refracting power, a third lens and a fourth lens with positive refracting power, a fifth lens with negative refracting power, a sixth lens with positive refracting power, and a seventh lens with negative refracting power. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens are disposed in order from an object side to an image side. | 02-26-2009 |
| 20150022908 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens substantially consists of a front-group consisting of a first lens having a negative meniscus shape with its convex surface facing an object side, a second lens having negative refractive power, a third lens having positive refractive power, a fourth lens having a negative meniscus shape with its concave surface facing an image side and a fifth lens having positive refractive power, and the front-group having positive refractive power as a whole, a stop, and a rear-group consisting of a sixth lens having positive refractive power and a seventh lens having a negative meniscus shape with its concave surface facing the object side, and the rear-group having positive refractive power as a whole, in this order from the object side. A predetermined conditional formula about a combined focal length of the first lens and the second lens, and a focal length of an entire system is satisfied. | 01-22-2015 |
| 359752000 | With six components | 7 |
| 20080278826 | Fish-eye lens and imaging device - A fisheye lens, comprising a front group made up of a total of three groups, which are two concave lenses | 11-13-2008 |
| 20100085651 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens includes a first lens having a negative power and including a concave surface facing an image side, a second lens having a positive power, a third lens having a positive power, an aperture diaphragm, a fourth lens, which is a biconvex lens having a negative power, a fifth lens having a positive power and including a convex surface facing the image side, and a sixth lens having a positive power and including a convex surface facing an object side, which are arranged in this order from the object side. The Abbe number of a material forming the fourth lens with respect to the d-line is 30 or less. When the focal length of the entire lens system is f and a composite focal length from the fourth lens to the sixth lens is f | 04-08-2010 |
| 20130265656 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens consists of negative first lens having a concave image-side surface, positive second lens, negative third lens, positive fourth lens, positive fifth lens having a convex image-side surface, and negative sixth lens, which are in this order from an object side. In the imaging lens, all of the lenses constituting the lens system are single lenses, which are not cemented lenses, and a stop is arranged closer to the object side than an image-side surface of the fourth lens is arranged. When a refractive index of a material of the third lens for d-line is Nd | 10-10-2013 |
| 20140063626 | MONOFOCAL PHOTOGRAPHING LENS ASSEMBLY - A monofocal photographing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with negative refractive power has a concave image-side surface. The second lens element has refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element has negative refractive power. The sixth lens element with positive refractive power has a convex image-side surface. | 03-06-2014 |
| 20140204478 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens substantially consists of six lenses of a negative first lens, a negative second lens, a positive third lens, a positive fourth lens, a negative fifth lens and a positive sixth lens in this order from an object side. When a curvature radius of an object-side surface of the fourth lens is R8, and a curvature radius of an image-side surface of the fourth lens is R9, and an Abbe number of the material of the third lens for d-line is νd3, and an Abbe number of the material of the fifth lens for d-line is νd5, the following conditional formulas (1) and (6) are satisfied: | 07-24-2014 |
| 20160011407 | IMAGING LENS AND IMAGING APPARATUS EQUIPPED WITH THE IMAGING LENS | 01-14-2016 |
| 20160077313 | WIDE ANGLE LENS - A wide angle lens may include a first lens having a negative power with a convex surface on an object side and a concave surface on an image side, a second lens having a negative power with a concave surface on the image side, a third lens having a positive power with a convex surface on the image side, a fourth lens having a positive power with a convex surface on the image side, a fifth lens being a plastic lens with a negative power with a concave surface on the object side and a concave surface on the image side, a sixth lens being a plastic lens with a positive power with a convex surface on the object side and a convex surface on the image side, and a diaphragm disposed between the third and fourth lenses. The fifth and sixth lenses constitute a cemented lens. | 03-17-2016 |
| 359753000 | With five or less components | 39 |
| 20080252997 | Objective Lens Design For Miniature Endoscope - An endoscope objective lens system design is disclosed, generally comprising a first lens group having overall negative refractive power, a second lens group having overall positive refractive power, and an aperture diaphragm disposed between the first and second lens groups wherein the first lens group includes a plano-concave lens with its concave surface facing the objective end of the endoscope. | 10-16-2008 |
| 20090009887 | Inverse Telephoto with Correction Lenses - An inverse telephoto with correction lenses comprises five lens elements with refractive power, from the object side to the image side: a first lens element with negative refractive power having a concave image-side surface; a second lens element with positive refractive power having a convex image-side surface; a third lens element with a convex object-side surface; a fourth lens element with a concave image-side surface; a fifth lens element with positive refractive power having a convex image-side surface, at least one of an object-side surface and the image-side surface of the fifth lens element being aspheric; and an aperture stop located between the first lens element and the second lens element. At least three of the surfaces of the first, second, third, fourth and fifth lens elements are aspheric. | 01-08-2009 |
| 20090080093 | Compact fisheye objective lens - A compact fisheye objective lens comprising a series of six lens elements arranged on an optical axis to focus an image on an image plane, the compact fisheye objective lens having a first lens element with a convex object surface that faces the object and a concave image surface that faces image plane, and a second lens element spaced to the right of the first lens element concave image surface, the second lens element having a concave object surface and a concave image surface. The compact fisheye objective lens having singlet third and fourth lens elements, the fifth and sixth lens elements being combined to form a doublet having a positive power. | 03-26-2009 |
| 20090109551 | OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS USING THE SAME - An optical system includes a first lens unit having a negative refractive power and a second lens unit having a positive refractive power. The second lens unit includes a front lens unit, a stop, and a rear lens unit. The front lens unit includes a biconvex positive lens located closest to the image side. A back focus during focusing on an infinitely-distant object point (BF), a focal length of the entire optical system (f), a focal length of the positive lens of the front lens unit located closest to the image side (fp), a focal length of the front lens unit (f | 04-30-2009 |
| 20090153986 | Wide-angle lens and projection device using the same - A wide-angle lens and a projection device using the same are provided. The wide-angle lens from an image side sequentially comprises a first lens group, a second lens group and a third lens group. The third lens group comprises an aperture stop. The first lens group has a negative refracting power, the second lens group has a positive refracting power, and the third lens group has a positive refracting power. A focal length f | 06-18-2009 |
| 20090323205 | LENS OPTICAL SYSTEM - A wide-angle lens optical system, including, in a sequence from an object side, a first lens group having a positive or negative refractive power, a stop, and a second lens group having positive refractive power, wherein the first lens group comprises, in a sequence from the object side, a front group having negative refractive power and a rear group having positive refractive power, and the wide-angle lens optical system satisfies the following Inequalities: | 12-31-2009 |
| 20100014174 | WIDE-ANGLE OPTICAL SYSTEM - The invention provides a superwide-angle imaging or projecting optical system provided that, albeit being a wide-angle optical system having an angle of view exceeding 180°, is of small size and reduced F-number and fast, and has improved f-θ performance. The optical system consists only of transmitting surfaces, and has an angle of view of 180° or more. The optical system comprises a front group (G | 01-21-2010 |
| 20100027136 | IMAGE FORMING LENS, CAMERA AND PORTABLE INFORMATION TERMINAL - An image forming lens includes: a first optical system positioned in an object side, a second optical system positioned in an image side, and an aperture stop interposed between the first optical system and the second optical system, wherein the first lens system includes a first F lens group which is positioned in the object side and has at least two negative lenses, and a first R lens group which is positioned in the aperture stop side and has at least one lens, wherein a distance between the first F lens group and the first R lens group is set to be largest, and wherein the second optical system includes a second F lens group in which, in the order from the aperture stop side, a first positive lens, a first negative lens, a second negative lens, and a second positive lens are arranged, and a second R lens group positioned in the aperture stop side and having at least one positive lens. | 02-04-2010 |
| 20100033848 | OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS HAVING THE SAME - An optical system includes a first lens unit, an aperture stop, and a second lens unit having a positive refractive power. In the optical system, the first lens unit includes at least one positive lens made of a material whose Abbe number (νdGP) and relative partial dispersion (θgFGP) satisfy a predetermined condition. | 02-11-2010 |
| 20100053773 | PROJECTION LENS AND PROJECTION DISPLAY DEVICE USING THE SAME - Disclosed are a projection lens that has a simple inner focus structure, an appropriate back focal length, telecentricity, a high optical performance, and a small size and can effectively correct, particularly, lateral chromatic aberration, and a projection display device. | 03-04-2010 |
| 20100195221 | WIDE-ANGLE LENS, IMAGING APPARATUS, AND METHOD FOR MANUFACTURING WIDE-ANGLE LENS - A wide-angle lens includes, in order from an object side, a first lens group G | 08-05-2010 |
| 20110051261 | IMAGING LENS - An imaging lens includes, sequentially from an object side, a first lens (L | 03-03-2011 |
| 20110058263 | MICRO PRIME LENS SYSTEM - A micro prime lens system is provided. From an object side to an image side, the micro prime lens system sequentially includes a first lens, a second lens, a third lens and a fourth lens, which have a positive, a negative, a positive and a negative index of refraction, respectively. The third lens is an aspherical lens made of glass material and conforms to the following condition: 0.3| 03-10-2011 | |
| 20110122512 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens includes negative first lens, negative second lens having a concave surface facing the image side, positive third lens, aperture stop, positive fourth lens, and fifth lens having a concave surface facing the object side, which are arranged sequentially from the object side. At least one of second lens, fourth lens and fifth lens has at least an aspheric surface. The Abbe number of third lens and the Abbe number of fifth lens are less than or equal to 30, and the Abbe number of fourth lens is greater than or equal to 40. Further, the following formula (1) is satisfied: | 05-26-2011 |
| 20110317285 | IMAGE-FORMING LENS, AND IMAGING APPARATUS AND INFORMATION DEVICE USING THE IMAGE-FORMING LENS - An image-forming lens includes, from an object side to an image side in order: a first lens group; an aperture; and a second lens group with a positive refractive power, the first lens group including, from the object side in order: a first F lens group with a negative refractive power; and a first R lens group with a positive refractive power, the first F lens group including, from the object side in order: a first negative lens which has a surface on the image side having a large curvature; and a second negative lens which has a surface on the object side having a large curvature, and the first R lens group including: any one of a positive lens and a cemented lens with a positive refractive power as a whole, wherein a distance from a surface on a most object side of the first lens group to an image plane in a state of focusing on an object at infinity: L, and a maximum image height: Y′ satisfy Conditional expression 1: 2.8| 12-29-2011 | |
| 20120033311 | Wide-angle optical system, and imaging apparatus incorporating the same - The wide-angle optical system of the invention comprises, in order from its object side, a first lens group having negative refracting power and a second lens group having positive refracting power. The second lens group comprises, in order from the object side, a first cemented doublet lens, an aperture stop, a second cemented doublet lens and a first double-convex lens. The widest separation among axial air separations except a back focus provides an axial space for receiving the aperture stop. The optical system is divided into the first lens group and the second lens group with the second widest air separation as a boundary. Focusing is implemented by letting the whole optical system out. The optical system satisfies Condition (1). | 02-09-2012 |
| 20120063011 | RETROFOCUS-TYPE WIDE ANGLE LENS AND CAMERA INCLUDING THE LENS - A retrofocus-type wide angle lens includes a first lens group having negative refractive power as a whole, a second lens group having positive refractive power as a whole, a stop, and a third lens group having positive refractive power as a whole, which are arranged in this order from the object side of the retrofocus-type wide angle lens. Further, the first lens group includes two negative meniscus lenses, each having a convex surface facing the object side. Further, each of the second lens group and the third lens group includes a three-element cemented lens. | 03-15-2012 |
| 20120099211 | SUPER-WIDE-ANGLE LENS SYSTEM AND IMAGING MODULE HAVING SAME - A super-wide-angle lens system for imaging an object on an imaging surface, includes a first lens group with negative refraction power and a second lens group with positive refraction power. The first lens group includes a first spherical lens with negative refraction power, a second spherical lens with negative refraction power, and a third spherical lens with positive refraction power. The first lens has a first surface facing the object side of the first lens group. The second lens group includes a fourth spherical lens with positive refraction power and a fifth spherical lens with negative refraction power. The system satisfies the formulas: 0.01| 04-26-2012 | |
| 20120105981 | WIDE-ANGLE LENS SYSTEM HAVING SHORT OVERALL LENGTH - A lens system includes, in order from the subject side to the image side of thereof, a first lens group of negative refractive power, a second lends group of positive refractive power, and an image plane. The first lens group includes a first spherical lens, a second spherical lens, and a third spherical lens arranged in this order from the subject side to the image side of the lens system. The first spherical lens includes a first subject surface and a first image surface. The lens system satisfies the following formula: 8.9| 05-03-2012 | |
| 20120113532 | FISHEYE LENS SYSEM AND PHOTOGRAPHING APPARATUS - A fisheye lens system and a photographing apparatus including the fisheye lens system. The fisheye lens system includes, in an order from an object to an image, a first lens group including at least three lenses and having negative refractive power; and a second lens group having positive refractive power, wherein the at least three lenses included in the first lens group include a first lens, a second lens, and a third lens, in the order from the object to the image. | 05-10-2012 |
| 20120147483 | WIDE FIELD ATHERMALIZED ORTHOSCOPIC LENS SYSTEM - A wide field optically athermalized orthoscopic lens system includes, in order from object to image, a first lens having a negative power, a second lens having a positive power, a third lens group having a positive power, a fourth lens having a positive power and a fifth lens having a negative power. The third lens group includes two lenses having, in order, a first lens with positive power and a second lens with negative power. The powers, shapes, Abbe dispersion values and temperature coefficients of refractive indices of the lenses are selected such that the lens system is athermalized, orthoscopic and achromatized over a wide (e.g. >140° C.) temperature range. | 06-14-2012 |
| 20120147484 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens is provided and includes: in order from the object side, a negative first lens, a negative second lens, a positive third lens, a stop, and a positive fourth lens. In the lens, each of the second lens, the third lens, and the fourth lens has at least one aspheric surface, and an Abbe number of a material of the third lens at the d-line is 35 or less. In addition, the imaging lens satisfies the following Conditional Expression (1): | 06-14-2012 |
| 20120206822 | WIDE ANGLE PHOTOGRAPHIC LENS ASSEMBLY - A wide angle photographic lens assembly comprises, in order from an object side to an image side, a first lens element with negative refractive power having a convex object-side surface and a concave image-side surface, a second lens element with positive refractive power having a concave object-side surface and a convex image-side surface, a third lens element, a fourth lens element with positive refractive power, a fifth lens element with negative refractive power, and a sixth lens element with positive refractive power. By adjusting the conditions among the above-mentioned lens elements, the wide angle photographic lens assembly can provide a wide-field of view and correct the aberration in order to obtain superior imaging quality. | 08-16-2012 |
| 20120250168 | OPTICAL SYSTEM AND OPTICAL APPARATUS HAVING THE SAME - An optical system includes at least one lens unit having a negative refractive power disposed closer to an object side than an aperture portion. The lens unit having a negative refractive power includes at least one positive lens and one negative lens. The ratio between the numbers of positive lenses and negative lenses included in the lens unit having a negative refractive power is appropriately set. The lens unit having a negative refractive power includes a plurality of negative lenses each having an appropriate Abbe number and relative partial dispersion and a positive lens having an appropriate Abbe number. A negative lens having the highest dispersion among the negative lenses is located in an appropriate position. | 10-04-2012 |
| 20120275037 | IMAGING LENS - An imaging lens includes a first lens having negative refractive power; a second lens having negative refractive power; a third lens; a fourth lens; and a fifth lens. The first lens has a positive curvature radius on an image plane side. The second lens has a sharp convex surface, and a positive curvature radius on the image plane side. The third lens has a positive curvature radius on the object side and a negative curvature radius on the image plane side. The fourth lens has a negative curvature radius on the object side and a positive curvature radius on the image plane side. The fifth lens has a positive curvature radius on the object side and a negative curvature radius on the image plane side, and an aspheric surface. | 11-01-2012 |
| 20130063829 | FIXED FOCUS LENS SYSTEM - A fixed focus lens system includes a first lens group having a negative refractive power; and a second lens group having a positive refractive power, wherein the first lens group and the second lens group are sequentially arranged from an object side to an image side, and the second lens group includes two lenses having an Abbe's number of 80 or greater. | 03-14-2013 |
| 20130107378 | IMAGING LENS | 05-02-2013 |
| 20130141804 | PROJECTION LENS SYSTEM WITH LONG BACK FOCAL LENGTH - A projection lens system, in the order from a magnified side to a reduced side, includes a first lens group with negative refraction power and a second lens group with positive refraction power. The projection lens system satisfies the formulas: −1.55| 06-06-2013 | |
| 20130163100 | IMAGING LENS - Disclosed herein is an imaging lens. The imaging lens according to a preferred embodiment of the present invention includes a first lens having positive (+) power and having both sides formed to be convex, a second lens having negative (−) power and formed to be concave toward a top side, a third lens having positive power and having both sides formed to be convex, a fourth lens having positive (+) power and formed to be convex toward a top side, and a fifth lens having negative (−) power and formed to be concave toward the top side, wherein the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are disposed in order from an object side. | 06-27-2013 |
| 20130242413 | OPTICAL UNIT AND IMAGE PICKUP APPARATUS - An optical unit that is configured of a three-group wide-angle lens, that is capable of suppressing optical distortion to a small amount, that has favorable optical characteristics, and that is tolerant of reflow, and an image pickup apparatus are provided. An optical unit | 09-19-2013 |
| 20140043699 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens consists of negative first lens, negative second lens of a biconcave shape, third lens of a plano-convex shape having a convex surface directed toward an object side or of a positive meniscus shape having a convex surface directed toward the object side, and a fourth lens of a plano-convex shape having a convex surface directed toward an image side or of a positive meniscus shape having a convex surface directed toward the image side, which are arranged in this order from the object side. Further, the following conditional formula (11) is satisfied: | 02-13-2014 |
| 20140043700 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens includes a negative first lens, a negative second lens, a third lens of a plano-convex shape having a convex surface directed toward an object side or of a positive meniscus shape having a convex surface directed toward the object side, and a fourth lens of a plano-convex shape having a convex surface directed toward an image side or of a positive meniscus shape having a convex surface directed toward the image side, which are arranged in this order from the object side. Further, the following conditional formula (4) is satisfied: | 02-13-2014 |
| 20140049842 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens consists of a negative first lens, a negative second lens, a third lens of a plano-convex shape having a convex surface directed toward an object side or of a positive meniscus shape having a convex surface directed toward the object side, and a fourth lens of a plano-convex shape having a convex surface directed toward an image side or of a positive meniscus shape having a convex surface directed toward the image side, which are arranged in this order from the object side. Further, the following conditional formula (3) is satisfied: | 02-20-2014 |
| 20140055871 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens includes negative first lens, negative second lens, third lens of a plano-convex shape having a convex surface directed toward an object side or of a positive meniscus shape having a convex surface directed toward the object side, and a fourth lens of a plano-convex shape having a convex surface directed toward an image side or of a positive meniscus shape having a convex surface directed toward the image side, which are arranged in this order from the object side. Further, the following conditional formula (6) is satisfied: | 02-27-2014 |
| 20140078604 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens consists of a negative first lens, a negative second lens, a third lens of a plano-convex shape having a convex surface directed toward an object side or of a positive meniscus shape having a convex surface directed toward the object side, and a fourth lens of a plano-convex shape having a convex surface directed toward an image side or of a positive meniscus shape having a convex surface directed toward the image side, which are arranged in this order from the object side. Further, the following conditional formula (1) is satisfied: | 03-20-2014 |
| 20140126072 | IMAGE-FORMING LENS, AND IMAGING APPARATUS AND INFORMATION DEVICE USING THE IMAGE-FORMING LENS - An image-forming lens includes, from an object side to an image side in order: a first lens group; an aperture; and a second lens group with a positive refractive power, the first lens group including, from the object side in order: a first F lens group with a negative refractive power; and a first R lens group with a positive refractive power, the first F lens group including, from the object side in order: a first negative lens; and a second negative lens, and the first R lens group including: any one of a positive lens and a cemented lens with a positive refractive power as a whole, wherein a distance from a surface on a most object side of the first lens group to an image plane in a state of focusing on an object at infinity: L, and a maximum image height: Y′ satisfy Conditional expression 1: 2.8| 05-08-2014 | |
| 20160178885 | OBJECTIVE LENS FOR ENDOSCOPES AND ENDOSCOPE | 06-23-2016 |
| 20170235121 | ENDOSCOPE OBJECTIVE OPTICAL SYSTEM | 08-17-2017 |
| 20170235122 | ENDOSCOPE OBJECTIVE OPTICAL SYSTEM | 08-17-2017 |
