| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 359771000 | Four components | 76 |
| 20080285159 | IMAGING LENS AND IMAGING APPARATUS EQUIPPED WITH THE IMAGING LENS - An imaging lens is provided and includes: in order from the object side, a first lens group including a biconcave lens; a second lens including two lenses whose convex surfaces are arranged opposite to each other and having a positive refractive power as a whole; a third lens group including a biconcave lens; and a fourth lens group including two lenses whose convex surfaces are arranged opposite to each other and having positive refractive power, as a whole, the imaging lens satisfying the specific condition. | 11-20-2008 |
| 20090185292 | Imaging lens module - An imaging lens module includes a fixed diaphragm and an optical module. The optical module includes first, second, third and fourth lenses arranged from an object side to an image side in a sequence of: a diaphragm, the first lens being a double-convex lens, the second lens having a negative refractive power and a concave surface disposed towards the object side, the third lens having a positive refractive power and a meniscus lens with a convex surface disposed towards the image side, the fourth lens having a convex surface disposed towards the object side and a wavy surface disposed towards the image side and a concave surface disposed towards the image side near the optical axis. With the diaphragm of the imaging lens module and the lens arrangement of the optical module, the sensitivity of tolerance of a system can be lowered to achieve a high imaging quality and a good yield rate. | 07-23-2009 |
| 20090213474 | Optical object distance simulation device for reducing total optical path - An optical object distance simulation device for reducing total optical path includes: a lens, an achromatic lens set, a first image lens, and a second image lens. The achromatic lens set disposes beside one side of the lens, the first image lens disposes beside one side of the achromatic lens set, and the second image lens disposes beside one side of the first image lens. The achromatic lens set is composed of a first lens and a second lens. The first lens is a double-concave lens. The second lens is a double-convex lens. One concave face of the double-concave tightly contacts with one convex face of the double-convex lens. Therefore, the lens, the achromatic lens set, the first image lens, and the second image lens match with each other in order to simulate real object distance for reducing an object distance between a test camera lens and a corresponding chart. | 08-27-2009 |
| 20100053775 | IMAGING LENS, AND IMAGING APPARATUS AND MOBILE TERMINAL APPARATUS USING THE SAME - An imaging lens comprises a first lens (L | 03-04-2010 |
| 20100157446 | OPTICAL UNIT - The present invention relates to an optical unit. The present invention further relates to the use of such an optical unit. Such an optical unit comprises, seen in a direction from the object side to the imaging surface, a first substrate, a first lens element, a flat, transparent intermediate layer, a second lens element and a second substrate, which intermediate layer has an optically correcting function near the imaging surface. | 06-24-2010 |
| 20120229921 | PHOTOGRAPHIC OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS HAVING THE SAME - A photographic optical system includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a positive or negative refractive power, and a third lens unit having a positive or negative refractive power, focusing being performed by moving the second lens unit, wherein at least one diffractive optical element and at least one optical element made of solid material are provided closer to the object side than a position where a paraxial chief ray intersects an optical axis, and wherein a focal length obtained by only a diffraction component of the diffractive optical element, a focal length of the optical element made of solid material, a focal length of the first lens unit, and a relative anomalous partial dispersion of a material forming the optical element made of solid material are appropriately set. | 09-13-2012 |
| 20130308208 | OCULAR LENS, OCULAR LENS WITH ADDITIONAL LENS, AND OPTICAL DEVICE - The invention provides an ocular lens well corrected for aberrations through a sufficiently large angle of view and having a sufficient eye relief while ensuring avoidance of increasing the overall length and suppression of an increase in lens diameter, and provides an optical device including this ocular lens. | 11-21-2013 |
| 20140118852 | LENS UNIT AND MANUFACTURING METHOD THEREFOR - A lens unit may include at least four lens groups and a tube-shaped holder holding the lens groups. The tube-shaped holder is provided with a second lens group holding part provided with a protruded part surrounding an outer peripheral end part of the second lens group through a gap space and the protruded part is provided with a caulked part which is deformed so as to cover the outer peripheral end part from the object side. The protruded part may be provided with a thick portion and a thin portion extended to the front side from the thick portion and the thin portion is caulked by being plastically deformed to be the caulked part. After the second lens group is mounted on an inner side to the protruded part, the position of the second lens group is adjusted and then a caulked part is formed. | 05-01-2014 |
| 20140177078 | IMAGING LENS - A four element lens system for use with an imaging sensor includes first, second, third, and fourth lens elements and an optical filter that are arranged sequentially in order from an object side to an imaging side. The lens elements are coated with an anti-reflective film. The lens system further includes an optical filter that is disposed at a distance from the imaging sensor. The lens elements are relatively positioned to each other to satisfy specific conditions. The lens elements further include thickness to diameters ratios that satisfy specific conditions. | 06-26-2014 |
| 20150331219 | LENS ASSEMBLY - A lens assembly includes a lens barrel, a first lens, a second lens, and a third lens. The first lens is provided in the lens barrel with an outer periphery abutting against an inner wall of the lens barrel. The second lens abuts against the first lens, and there is a spacing formed between the second lens and the inner wall of the lens barrel. The third lens abuts against the second lens, and there is another spacing formed between the third lens and the inner wall of the lens barrel. With abutment relations of these lenses, relative positions between each lens can be fixed, and therefore the influence of allowable tolerance of the lens barrel upon optical performance is greatly reduced. | 11-19-2015 |
| 359772000 | First component positive | 48 |
| 20080239515 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens is provided and includes: in order from an object side of the imaging lens, a first lens group having a positive power as a whole; a second lens group including a lens in the most object side thereof, the lens having a concave surface on the object side thereof; a third lens group including a cemented lens of a lens having a positive power and a lens having a negative power; and a fourth lens group having a negative power as a whole. | 10-02-2008 |
| 20090067063 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens is provided and includes: in order from an object side of the imaging lens, a first lens group having a positive power as a whole; a second lens group, in which an object-side surface of a lens closest to the object side is concave toward the object side; a third lens group of a single lens having a positive power; and a fourth lens group having a negative power as a whole. | 03-12-2009 |
| 20090109552 | Subminiature imaging optical system - There is provided a subminiature imaging optical system suitably applicable to a subminiature optical device such as a mobile phone camera. The subminiature imaging optical system including: a first lens having positive refractive power and both convex surfaces; a second lens having negative refractive power and a concave image-side surface; a third lens having negative refractive power and a meniscus shape with a convex image-side surface; and a fourth lens having negative refractive power. | 04-30-2009 |
| 20110194196 | OPTICAL LENS SYSTEM FOR TAKING IMAGE - An optical lens system for taking image comprises, in order from the object side to the image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power having a concave image-side surface and an object-side surface cemented to an image-side surface of the first lens element; a third lens element with negative refractive power; a fourth lens element with positive refractive power having a concave image-side surface and at least one inflection point; and an aperture stop located between an object to be photographed and the third lens element. In the optical lens system for taking image, the number of the lens elements with refractive power being limited to four. A focal length of the optical lens system for taking image is f, a focal length of the first lens element is f1, they satisfy the relation: | 08-11-2011 |
| 20120063012 | IMAGING LENS - An imaging lens includes plastic-made first, second, third, and fourth lens elements arranged in the given order from an object side to an imaging side. The first lens element has a positive focusing power and is biconvex. The second lens element has a negative focusing power, is biconcave, and has an abbe number not greater than 30. The third lens element has a positive focusing power and has a convex imaging-side surface facing toward the imaging side. The fourth lens element has an imaging-side surface formed with a concave area in a vicinity of an optical axis of the fourth lens element. The imaging lens further includes an aperture stop disposed between the first and second lens elements. | 03-15-2012 |
| 20120224273 | PHOTOGRAPHING OPTICAL LENS ASSEMBLY - A photographing optical lens assembly includes, in order from an object side to an image side: the first lens element with positive refractive power having a convex object-side surface, the second lens element with positive refractive power, the third lens element with positive refractive power, and the fourth lens element with positive refractive power. By such arrangement, the total track length of the photographing optical lens assembly would be suitable for compact electronics. | 09-06-2012 |
| 20140022651 | Mobile device and optical imaging lens thereof - Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises four lens elements positioned in an order from the object side to the image side. Through controlling the convex or concave shape of the surfaces of the lens elements, the thickness of the at least one lens element, an air gap between two lens elements, and a sum of all air gaps between all four lens elements along the optical axis satisfying the relations: (T3/G | 01-23-2014 |
| 20140098431 | IMAGING LENS - The present invention relates to an imaging lens, the imaging lens including, in an ordered way from an object side, a first lens having positive (+) refractive power, a second lens having negative (−) refractive power, a third lens having negative (−) refractive power, a fourth lens having negative (−) refractive power, wherein the imaging lens meets a conditional expression of −0.5| 04-10-2014 | |
| 20140285910 | IMAGING LENS - An imaging lens includes plastic-made first, second, third, and fourth lens elements arranged in the given order from an object side to an imaging side. The first lens element has a positive focusing power and is biconvex. The second lens element has a negative focusing power, is biconcave, and has an abbe number not greater than 30. The third lens element has a positive focusing power and has a convex imaging-side surface facing toward the imaging side. The fourth lens element has an imaging-side surface formed with a concave area in a vicinity of an optical axis of the fourth lens element. The imaging lens further includes an aperture stop disposed between the first and second lens elements. | 09-25-2014 |
| 20220137334 | CAMERA LENS ASSEMBLY - The present disclosure discloses a camera lens assembly, the camera lens assembly having a total effective focal length f and an entrance pupil diameter EPD, and along an optical axis from an object side to an image side sequentially including a first lens, a second lens, a third lens and a fourth lens, wherein the first lens and the fourth lens have positive refractive powers, an image-side surface of the first lens is a concave surface, and an object-side surface of the fourth lens is a convex surface. In addition, the total effective focal length f and the entrance pupil diameter EPD satisfy: f/EPD≤2. | 05-05-2022 |
| 359773000 | + - + - Arrangement | 25 |
| 20080239516 | PHOTOGRAPHING LENS UNIT INCLUDING PLURALITY OF LENSES AND IMAGING APPARATUS WITH THE SAME - In a photographing lens unit, an aperture diaphragm, a first lens having positive refractive power, a second lens having negative refractive power, a third lens of a positive meniscus lens with a concave surface on the object side, an ND filter, a fourth lens of a negative meniscus lens with a convex surface on the object side, an IR cut filter, and an imaging element are disposed in order from the object side to the imaging element side. In the third lens, a surface shape on the object side changes from concave to convex as it is away from an optical axis, and a surface shape on the image side changes from convex to concave as it is away from the optical axis. In the fourth lens, a surface shape on the object side changes from convex to concave as it is away from the optical axis. | 10-02-2008 |
| 20090009889 | IMAGE TAKING LENS - An image taking lens | 01-08-2009 |
| 20090015944 | IMAGING LENS, CAMERA MODULE, AND IMAGING APPARATUS - An imaging lens is provided and includes: in order from an object side of the imaging lens, a first lens having a positive power; a second lens having a negative power; a third lens having a positive power and having a convex surface on an image side thereof; and a fourth lens having a negative power and having a concave surface or a flat surface on the object side and in a vicinity of an optical axis thereof, and the imaging lens satisfies conditional expression: | 01-15-2009 |
| 20090034099 | Imaging lens - It is to provide a large-diameter imaging lens that can suppress reduction of peripheral light amount, achieve size and weight reduction, and maintain excellent optical performance. | 02-05-2009 |
| 20090052060 | IMAGING LENS WITH HIGH RESOLUTION AND SHORT OVERALL LENGTH - An exemplary imaging lens includes, in this order from the object side to the image side thereof, a first lens of positive refraction power, a second lens of negative refraction power, a third lens of positive refraction power, and a fourth lens of negative refraction power. The imaging lens satisfies the formulas of: (1) 0.5| 02-26-2009 | |
| 20090207506 | Optical Lens System for Taking Image - An optical lens system for taking image comprises four lens elements from the object side to the image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power having a concave object-side surface and a concave image-side surface, at least one of the object-side surface and the image-side surface of the second lens element being aspheric, inflection points being formed on the image-side surface of the second lens element; a third lens element with positive refractive power having a convex object-side surface and a convex image-side surface; a fourth lens element with negative refractive power; and an aperture stop being located between the object side and the second lens element. | 08-20-2009 |
| 20090207507 | IMAGING LENS AND IMAGE PICKUP DEVICE - An imaging lens includes in order from an object side, a stop and a first lens to a fourth lens. Both the surfaces of a third lens have surfaces including at least one inflection point, and an inclination of each surface at the terminal end part of a periphery within an effective diameter collapses toward the image side. And 0.125, 0.4| 08-20-2009 | |
| 20090268312 | Image pickup lens and image pickup apparatus - An image pickup lens includes, in order from an object side, a first lens element having a positive refractive power and a convex surface facing the object side, an aperture stop adjusting the amount of light, a second lens element having a negative refractive power, a third lens element having a positive refractive power and a concave surface facing the object side, and a fourth lens element having a negative refractive power. In the image pickup lens, the following conditional expressions are satisfied, | 10-29-2009 |
| 20100002314 | Lens system with symmetrical optics - A lens system comprising an inner lens structure and an outer lens structure. The inner lens structure comprises an inner positive lens, a first transparent substrate and an inner negative lens. The outer lens structure comprises an outer positive lens, a second transparent substrate and an outer negative lens. | 01-07-2010 |
| 20100014175 | IMAGING LENS, AND IMAGING DEVICE AND MOBILE TERMINAL APPARATUS USING THE SAME - A first lens (L | 01-21-2010 |
| 20100091386 | MINIATURE IMAGE CAPTURE LENS - A miniature image capture lens is disclosed, comprising an aperture diaphragm having an aperture through which an image is captured and a wafer-level lens system, comprising a first lens group including a first substrate, a first lens disposed on a first side of the first substrate and a second lens disposed on a second side of the first substrate, and a second lens group including a second substrate, a third lens disposed on a first side of the second substrate and a fourth lens disposed on a second side of the second substrate. The first lens, the second lens, the third lens and the fourth lens are aspherical and the miniature image capture lens meets the following condition: | 04-15-2010 |
| 20100097710 | FIXED FOCUS LENS - A fixed focus lens includes, numbered in order of location from an object side to an image side, a first lens, a second lens, a third lens, and a fourth lens. The first lens is a biconvex lens with a positive refractive power, and the second lens is a convex-concave lens with a negative refractive power. The third lens is a concave-convex lens with a positive refractive power, and the fourth lens is an aspherical lens having a negative refractive power in the centre portion thereof and a positive refractive power at the periphery portion thereof. The fixed focus lens satisfies the condition: 1.0>|(1/r | 04-22-2010 |
| 20100149664 | IMAGING LENS SYSTEM AND IMAGING MODULE HAVING SAME - An imaging module includes an imaging lens system and an image sensor. The imaging lens system includes a first lens, a second lens, a third lens, and a fourth lens. The imaging module satisfies the formulas, 2.4| 06-17-2010 | |
| 20110058264 | Lens Module of Scanner - A lens module of a scanner is provided, including a first lens with a positive diopter, a second lens with a negative diopter, a third lens with a positive diopter, and a fourth lens with a negative diopter. The first, second, third, and fourth lenses are sequentially arranged from an object end to an image end of the lens module, and at least one of the first and fourth lenses is an aspheric lens. The fourth lens has a focal length f | 03-10-2011 |
| 20110069401 | Optical system for camera - The present invention relates to an optical system for a camera. | 03-24-2011 |
| 20110109979 | IMAGING LENS, IMAGING APPARATUS, AND METHOD FOR MANUFACTURING IMAGING LENS - An imaging lens SL installed into such as an electronic still camera | 05-12-2011 |
| 20110267708 | Image pickup apparatus - An image pickup apparatus includes in order from an object side a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, and a fourth lens group having a negative refractive power. The fourth lens group includes an image forming optical system which comprises two lens components namely, a positive meniscus lens having a convex surface directed toward an image side, and a biconcave negative lens in order from the object side, or, one lens component in which, the positive meniscus lens having the convex surface directed toward the image side, and the biconcave negative lens are cemented, and the fourth lens group satisfies a predetermined conditional expression. | 11-03-2011 |
| 20110286116 | MACRO LENS - The present invention is directed to an inner focusing macro lens that has a large aperture ratio as expressed by 2.5 or even smaller in F-number and still remains compact, and that is adapted to compensate for spherical aberration, astigmatism, and comatic aberration during photographing throughout the entire object distance ranging from infinity to proximity for an up to 1:1-magnification image. The inner focusing macro lens has the leading or first lens group of positive refractivity, the second lens group of negative refractivity, the third lens group of positive refractivity, and the trailing lens set succeeding to the third lens group in sequence from a position closest to an object being photographed. During focusing from a point infinitely far to that as proximal as desired, the first lens group is static while the second lens group is moved toward the imaging plane, and the third lens group is moved toward the object. The first lens group has at least four lens pieces of comprehensively positive refractivity and at least one lens piece of negative refractivity, and three of the lens pieces closest to the object in the first lens group are of positive refractivity. | 11-24-2011 |
| 20110310495 | Optical system - There is provided an optical system configured of 4-sheet lenses to have a wide angle of view. The optical system includes: a first lens having a positive refractive power, with both surfaces being convex; a second lens having a negative refractive power, with both surfaces thereof being concave; a third lens having a positive refractive power and a meniscus shape; and a fourth lens having a negative refractive power, with both surfaces thereof being concave, all of which are disposed in order from an object to a front upper surface. In the optical system, the refractive powers of the first lens to the fourth lens satisfy the following Conditional Expression 1. | 12-22-2011 |
| 20120194925 | IMAGE PICKUP LENS - An image pickup lens includes, in sequence from an object side to an image side, an aperture stop; a first lens having two convex surfaces and having a positive refractive power; a second lens in a meniscus shape whose convex surface faces to the object side having a negative refractive power; a third lens in a meniscus shape with the convex surface facing to the image side having a positive refractive power; a fourth lens in a meniscus shape with the convex surface facing to the object side having a negative refractive power. Predefined conditions are satisfied. | 08-02-2012 |
| 20120194926 | IMAGING LENS - An imaging lens includes a first lens L | 08-02-2012 |
| 20120200944 | IMAGING LENS - An imaging lens includes, from an object-side to an image-side: an aperture stop, a first lens of positive refractive power with two convex surfaces along the optical axis of the imaging lens, a meniscus second lens of negative refractive power with a convex surface on the object-side, a meniscus third lens of positive refractive power with a convex surface on the image-side, a meniscus fourth lens of negative refractive power with a convex surface on the object-side. Specified conditions are satisfied in order to reduce aberrations and an Fno (focal ratio number) and enhance wide-angle view. | 08-09-2012 |
| 20140185151 | IMAGE CAPTURING LENS SYSTEM - An image capturing lens system includes four lens elements with refractive power, in order from an object side to an image side, a first lens element, a second lens element, a third lens element and a fourth lens element. The positive first lens element has a convex object-side surface at a paraxial region. The negative second lens element has a concave object-side surface at a paraxial region and an image-side surface changing from concave at a paraxial region to convex at a peripheral region, wherein the surfaces of the second lens element are aspheric. The positive third lens element has a concave object-side surface at a paraxial region and a convex image-side surface at a paraxial region. The negative fourth lens element has an image-side surface changing from concave at a paraxial region to convex at a peripheral region, and the surfaces of the fourth lens element are aspheric. | 07-03-2014 |
| 20140293460 | IMAGING LENS - An imaging lens includes plastic-made first, second, third, and fourth lens elements arranged in the given order from an object side to an imaging side. The first lens element has a positive focusing power and is biconvex. The second lens element has a negative focusing power, is biconcave, and has an abbe number not greater than 30. The third lens element has a positive focusing power and has a convex imaging-side surface facing toward the imaging side. The fourth lens element has an imaging-side surface formed with a concave area in a vicinity of an optical axis of the fourth lens element. The imaging lens further includes an aperture stop disposed between the first and second lens elements. | 10-02-2014 |
| 20150043092 | IMAGING LENS - Designed for a solid-state image sensor, it includes, in order from an object side to an image side: a first positive lens having a convex object-side surface; a second negative lens having a concave image-side surface; a third positive meniscus lens having a convex image-side surface; and a fourth negative lens having concave object-side and image-side surfaces near an optical axis. A first diffraction optical surface is formed on one lens surface of the first to third lenses, and a second one is formed on the fourth lens object-side surface. The imaging lens satisfies a conditional expression below, | 02-12-2015 |
| 359774000 | + - + + Arrangement | 6 |
| 20080291553 | Subminiature imaging optical system - There is provided a subminiature imaging optical system including, sequentially from an object side to an image side: a first lens having positive refractive power; a second lens having negative refractive power and both sides concaved toward an image side; a third lens having positive refractive power and a meniscus shape with a convex image-side surface; and a fourth lens having positive refractive power. The first and second lenses have refractive power satisfying following condition 1, the second lens has a shape satisfying following condition 2, and the third and fourth lenses have refractive power satisfying following condition 3, | 11-27-2008 |
| 20090190240 | LENS BARREL AND ELECTRON IMAGING DEVICE USING THE SAME - The inventive lens barrel comprises: a first group frame | 07-30-2009 |
| 20100007970 | IMAGING LENS AND IMAGING APPARATUS USING IMAGING LENS - Disclosed is an imaging lens having both high heat resistance that enables the imaging lens to be mounted on a printed circuit board by a reflow mounting method and a high optical performance. The imaging lens includes: a first positive lens group; a second negative lens group; a third positive lens group; and a fourth positive or negative lens group. Each of the first to fourth lens groups includes a parallel plane glass plate and a resin lens that has heat resistance and is arranged on the parallel plane glass plate so as to be integrated with the parallel plane glass plate. | 01-14-2010 |
| 20120200945 | IMAGING LENS - An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens having positive refractive power; and a fourth lens having positive refractive power, arranged from an object side to an image plane side. In the first lens, a curvature radius on an object-side surface is positive and a curvature radius of an image-side surface is negative. In the second lens, curvature radii of an object-side surface and an image-side surface are both positive. In the third lens, curvature radii of an object-side surface and an image-side surface thereof are both negative. When the whole lens system has a focal length f and a distance from the object-side surface of the first lens to an image-side surface of the fourth lens is L14, the imaging lens satisfies the following expression: | 08-09-2012 |
| 20120229922 | IMAGING LENS - An imaging lens, although compact, has satisfactorily corrected aberrations. The imaging lens is configured by disposing, in sequence from the object side, a stop (ST); a first lens (L | 09-13-2012 |
| 20180024320 | IMAGING LENS AND IMAGING APPARATUS | 01-25-2018 |
| 359775000 | + - - + Arrangement | 3 |
| 20100046095 | LENS UNIT AND IMAGE CAPTURING DEVICE - A lens unit including a first lens, a second lens, a third lens, and a fourth lens arranged in order from an object side toward an image side. The first lens is laminated with the second lens. An aperture stop is held between the first lens and the second lens. | 02-25-2010 |
| 20100284094 | Optical Lens System for Taking Image - An optical lens system for taking image comprises, in order from the object side to the image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power having a concave image-side surface and an object-side surface cemented to an image-side surface of the first lens element; a third lens element with negative refractive power; a fourth lens element with positive refractive power having a concave image-side surface and at least one inflection point; and an aperture stop located between an object to be photographed and the third lens element. In the optical lens system for taking image, the number of the lens elements with refractive power being limited to four. A focal length of the optical lens system for taking image is f, a focal length of the first lens element is f | 11-11-2010 |
| 359776000 | With multiple element component | 1 |
| 20090323206 | IMAGING MODULE WITH SYMMETRICAL LENS SYSTEM AND METHOD OF MANUFACTURE - An imaging module and method of fabrication. The method comprises forming a first lens wafer with a plurality of outer negative lenses and forming a second lens wafer with a plurality of inner negative lenses The method further comprises bonding the first lens wafer and second lens wafer to create a bonded stack; forming a plurality of inner positive lenses on the second lens wafer and bonding a spacer wafer to the second lens wafer; and forming a plurality of outer positive lenses on the first lens wafer. | 12-31-2009 |
| 359779000 | + + - + Arrangement | 1 |
| 20090207508 | IMAGING LENS AND IMAGING APPARATUS - An imaging lens includes in order from an object side: a first lens including a positive lens having a convex surface directed to the object side; a stop; a second lens including a positive lens having a convex surface directed to an image side; a third lens including a negative meniscus lens with a concave surface directed to the object side; and a fourth lens including, near an optical axis, a positive meniscus shape with a convex surface directed to the object side. An air space between the second lens and the third lens is smaller in a periphery than near the optical axis. And f | 08-20-2009 |
| 359780000 | + + + - Arrangement | 3 |
| 20120236421 | Optical Lens Assembly for Image Photographing - An optical lens assembly for image photographing, in order from an object side to an image side comprising: a first lens element with positive refractive power having a convex object-side surface; a second lens element with positive refractive power; a third lens element with positive refractive power having a convex image-side surface; a plastic fourth lens element with negative refractive power having a concave image-side surface, both object-side and image-side surfaces being aspheric, and having at least one inflection point. Additionally, the optical lens assembly for photographing image has an image sensor on the image plane for imaging a photographed object and satisfies specific conditions. Thereby, this invention has a high resolving power and can shorten the total length of the lens assembly for using in camera and mobile phone camera with well photographing abilities. | 09-20-2012 |
| 20130308209 | OPTICAL UNIT AND IMAGE PICKUP UNIT - An optical unit and an image pickup unit are provided that allow a full angular field to be increased in spite of small size and low cost. An image pickup lens | 11-21-2013 |
| 20140049844 | OPTICAL DEVICE FOR CAMERA TESTING - An optical device is to be disposed between a test screen and a test camera that captures an image on the test screen through the optical device. The optical device includes first, second, third and fourth lenses arranged from a camera side to a screen side in the given order. The first lens has a shape factor ranging from −10 to 5, the second lens is a positive lens and has a shape factor ranging from −15 to 2, the third lens is a positive lens and has a shape factor ranging from −30 to 1, and the fourth lens is a positive lens and has a shape factor ranging from −30 to 1. A ratio of a focal length of the optical device to that of the test camera ranges from 1 to 80. | 02-20-2014 |
| 359781000 | First component negative | 18 |
| 20080239517 | IMAGING LENS AND IMAGING DEVICE - An imaging lens includes, in order from an object side, a first lens G | 10-02-2008 |
| 20080266678 | Optical Lens System for Taking Image - An optical lens system for taking image comprises four lens elements with refractive power, from the object side to the image side: a first meniscus lens element with negative refractive power; a second lens element with positive refractive power having a convex object-side and a convex image-side surface; a third lens element with negative refractive power having a concave object-side surface and a convex image-side surface; a fourth lens element with positive refractive power having a convex object-side surface and a concave image-side surface; and an aperture stop located between the object and the second lens element. The above arrangements effectively reduce the volume of the optical lens system while providing a relatively high resolution. | 10-30-2008 |
| 20080316618 | ULTRA WIDE-ANGLE IMAGING LENS DEVICE AND IMAGING APPARATUS - An ultra wide-angle imaging lens device | 12-25-2008 |
| 20090021846 | IMAGE READING LENS AND IMAGE READING APPARATUS - An image reading lens is provided and includes: in order from an object side of the image reading lens, a first lens of a negative lens having a meniscus shape directing a concave surface toward the object side thereof; a second lens having a biconvex shape; a stop; a third lens of a positive lens having a meniscus shape directing a convex surface toward an image side thereof; and a fourth lens of a negative lens having a meniscus shape directing a concave surface toward the object side thereof. The image reading lens satisfies the following conditional expressions: | 01-22-2009 |
| 20090034100 | OPTICAL SYSTEM, IMAGING APPARATUS, AND METHOD FOR FORMING IMAGE BY THE OPTICAL SYSTEM - Providing an optical system having excellent optical performance, an imaging apparatus, and a method for forming an image by the optical system. The optical system includes, in order from an object, a first lens group G | 02-05-2009 |
| 20090237811 | Objective lens system for endoscope - An objective lens system for endoscope comprising at least a first negative lens element, a second positive lens element, an aperture stop, and a cemented lens component consisting of a third negative lens element and a fourth positive lens element, and being configured so as to satisfy the conditions (2), (5) and (4) or the conditions (2), (3) and (4) which are mentioned below, whereby the lens system corrects lateral chromatic aberration and longitudinal chromatic aberration with a good balance, favorably corrects aberrations such as chromatic aberration and has a compact composition or a short total length. | 09-24-2009 |
| 20110051262 | WIDE-ANGLE LENS - A wide-angle lens ( | 03-03-2011 |
| 20120113533 | IMAGING LENS - An imaging lens includes a first lens group having a first lens that directs a concave surface to an image plane side and is negative; a second lens group having a second lens that directs a concave surface to an object side and is positive; an aperture; a third lens group having a third lens that is positive; and a fourth lens group having a joined lens that is composed of a fourth lens that is positive and a fifth lens that is negative. In the configuration, when the whole lens system has a focal length f and a composite focal length of the first lens group to the third lens group is Fa, the imaging lens satisfies the following relation: | 05-10-2012 |
| 20120154932 | ENDOSCOPE OBJECTIVE LENS AND ENDOSCOPE USING THE SAME - An endoscope objective lens includes, in sequence from an object side, a front group which includes a negative first lens having a concave surface faces at image side, a filter, and a positive second lens having a convex surface at the object side and a flat surface or concave surface at the image side; an aperture stop; and a back group which includes a positive third lens having a convex surface at the image side, and a combined lens formed of a plano-convex lens or a biconvex lens and a negative meniscus lens, and satisfies the Conditional Expression (1) and (2): | 06-21-2012 |
| 20140098432 | IMAGING LENS - An imaging lens includes a first lens having negative refractive power; a second lens having positive refractive power; a third lens having positive refractive power; and a fourth lens having negative refractive power, arranged from an object side to an image plane side. In the first lens, a curvature radius of an image-side surface is positive. In the second lens, curvature radii of the object-side surface and the image-side surface are both negative. In the third lens, a curvature radius of the object-side surface is positive and a curvature radius of the image-side surface is negative. When a whole lens system has a focal length f and the first lens has a focal length f1, the imaging lens satisfies the following conditional expression: | 04-10-2014 |
| 20140233112 | OBJECTIVE OPTICAL SYSTEM AND ENDOSCOPE USING SAME - The angle of view of an objective optical system is widened, while suppressing generation of lateral chromatic aberration. An objective optical system includes: a first lens group having a negative power; an aperture stop; and a second lens group having a positive power, in this order from an object side. The first lens group includes a negative single first lens, and a cemented lens formed by cementing a positive lens and a negative lens together, provided in this order from the object side. The second lens group includes a positive single fourth lens, and a cemented lens formed by cementing a positive lens and a negative lens together, provided in this order from the object side. The objective optical system satisfies Conditional Formula (1): 15.0<νd(RN)<18.6, wherein νd(RN) is the Abbe's number of the negative lens in the cemented lens within the second lens group with respect to the d line. | 08-21-2014 |
| 20140233113 | OBJECTIVE OPTICAL SYSTEM AND ENDOSCOPE USING SAME - An objective optical system includes: a negative first lens group; an aperture stop; and a positive second lens group, provided in this order from an object side. The first lens group includes a first lens, which is a negative single lens, and a cemented lens formed by cementing a positive lens and a negative lens together, provided in this order from the object side. The second lens group includes a fourth lens, which is a positive single lens, and a cemented lens formed by cementing a positive lens and a negative lens together, provided in this order from the object side. The objective optical system satisfies Conditional Formula (1): f1/f<1.1, wherein f1 is the focal length of the lens provided most toward the object side, and f is the focal length of the entire lens system. | 08-21-2014 |
| 20140233114 | OBJECTIVE OPTICAL SYSTEM AND ENDOSCOPE USING SAME - An objective optical system includes: a first lens group having a negative power; an aperture stop; and a second lens group having a positive power, provided in this order from an object side. The first lens group includes a first lens, which is a negative single lens, and a cemented lens formed by a positive lens and a negative lens, provided in this order from the object side. The second lens group includes a fourth lens, which is a positive single lens, and a cemented lens formed by a positive lens and a negative lens, provided in this order from the object side. The objective optical system simultaneously satisfies Conditional Formulae (1) −1.5| 08-21-2014 | |
| 20140240855 | ENDOSCOPE OBJECTIVE LENS AND ENDOSCOPE - An endoscope objective lens substantially consists of four lens groups consisting of, in order from the object side, a negative first lens group, a positive second lens group, a negative third lens group and a positive fourth lens group. During focusing from the farthest object to the nearest object, the first lens group is fixed, and the second lens group and the third lens group are moved along the optical axis. The third lens group includes a cemented lens that is formed by a positive lens and a negative lens cemented together in this order from the object side, and the cemented surface of the cemented lens is oriented such that the concave surface faces the object side. | 08-28-2014 |
| 359782000 | - + + - Arrangement | 2 |
| 20080225410 | Optical assembly for medical imaging devices - Optical assemblies for use in medical or other devices so as to image an object under examination onto an image sensor include a plurality of lens elements that can be retained in lens barrel. The lens elements and the lens barrel can be sealed with a compressible gasket. In one example, at least one lens element is made of an injection-moldable plastic and at least one lens element is made of a relatively dispersive optical glass. A lens barrel diameter or lens diameter can be selected to permit access to the object under examination with surgical or other tools. Aperture plates can be situated so as to reduce flare in the object image. | 09-18-2008 |
| 20090097137 | WIDE-ANGLE LENS WITH HIGH RESOLUTION - An exemplary wide-angle lens includes, in this order from the object side to the image side thereof, a first lens having negative refraction of power, a second lens having positive refraction of power, a third lens | 04-16-2009 |
| 359783000 | - + + + Arrangement | 2 |
| 20090052061 | IMAGING LENS AND IMAGE PICKUP APPARATUS - An imaging lens comprises, in order from an object side: a first lens that has a negative refractive power and is convex toward the object side; a second lens that has a positive refractive power and is a meniscus lens convex toward the object side; a stop; a third lens that has a positive refractive power and is convex toward an image side; and a cemented lens that has a positive refractive power as a whole and is formed by cementing a fourth lens and a fifth lens, wherein assuming that an Abbe number of the second lens with respect to d-line is ν | 02-26-2009 |
| 20140198398 | Endoscope Objective Optical System - Provided is an endoscope objective optical system | 07-17-2014 |
