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| Number | Title | Issue Date |
| 8098443 | Miniature zoom lens system A miniature zoom lens system comprises three lens groups having four lenses in total. The first lens group has negative power and is fixed. The second lens group has positive power and includes two lenses. An aperture is furnished in front of and movable with the se... | 01/17/2012 |
| 8098442 | Zoom lens system, imaging device and camera An object of the present invention is to provide: a zoom lens system that has a high resolution, high capability of compensating curvature of field, a high zoom ratio of, for example, 3 or greater, a reduced weight, and a reduced overall optical length at the time o... | 01/17/2012 |
| 8094382 | Zoom lens system and electronic imaging device using the same A zoom lens system includes a negative first lens group, a positive second lens group and a positive third lens group, in this order from the object. The second lens group includes a cemented lens having a positive first lens element and a negative second lens eleme... | 01/10/2012 |
| RE43016 | Variable focal length lens, photographing lens unit, camera, and portable information terminal device A negative first group optical system, a positive second group optical system, and a positive third group optical system are sequentially arranged from the object side. A stop moving integrally with the second group optical system is provided on the object side of t... | 12/13/2011 |
| 8045276 | Compact zoom lens with three lens groups and design method thereof A compact zoom lens with three lens groups and a design method thereof. Along the optical axis from the object side to the image side, the compact zoom lens with three lens groups includes a negative power first lens group having a negative power first lens and a po... | 10/25/2011 |
| 8023198 | Lens system and optical apparatus having this lens system A lens system includes, in order from an object: a first lens group having negative refractive power; and a second lens group having positive refractive power, the first lens group including, in order from the object, a lens having a negative refractive power, a pla... | 09/20/2011 |
| 7961405 | Zoom lens and optical apparatus including the same A zoom lens includes a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit having a positive refractive power. The first lens unit, the second lens unit, and the third lens unit are arrange... | 06/14/2011 |
| 7961404 | Zoom lens A zoom lens includes, in order from an object side to an image side, a first lens unit of negative refractive power, a second lens unit of positive refractive power, and a third lens unit of positive refractive power. The zoom lens changes the distances between the ... | 06/14/2011 |
| 7957071 | Focus adjustment method of zoom lens system A focus adjustment method of a zoom lens system is provided for correcting a focal point shift caused by manufacturing error. The zoom lens system includes three movable lens groups in which at least two of said lens groups are moved to perform zooming to form an im... | 06/07/2011 |
| 7952813 | Zoom lens system and electronic imaging apparatus that uses the same A zoom lens system includes a negative first lens group, a positive second lens group, and a positive third lens group, in this order from the object. Each of the negative first lens group, the positive second lens group and the positive third lens group move... | 05/31/2011 |
| 7944621 | Zoom lens system and a projector with the zoom lens system A zoom lens system comprising, arranged sequentially from the enlarging side to the reducing side, a first lens group having a negative refractive power as a whole, a second lens group having a positive refractive power as a whole and a third lens group having a pos... | 05/17/2011 |
| 7940474 | Compact zoom lens A three-lens group zoom lens in an N-P-P configuration; the first, second, and third lens groups are arranged sequentially from an object side to an image side; during zooming from a wide-angle to a telephoto position the distance between the first lens group and th... | 05/10/2011 |
| 7940475 | Zoom lens and camera with zoom lens A zoom lens of variable power ratio of the order of 3 in which the whole of the zoom lens is made up of three lens elements groups and the power configuration of each of the groups has an arrangement of negative, positive, and negative. The zoom lens includes, seque... | 05/10/2011 |
| 7920334 | Zoom lens system, optical apparatus and method for zooming the same Providing a zoom lens system being compact with high optical performance, an optical apparatus using the same, and a method for zooming the zoom lens system. The system includes, in order from an object along an optical axis, a first lens group G1 having nega... | 04/05/2011 |
| 7876507 | Zoom lens A zoom lens includes, in order from an object side to an image side, a first lens unit of negative refractive power, a second lens unit of positive refractive power, and a third lens unit of positive refractive power. The zoom lens changes the distances between the ... | 01/25/2011 |
| 7859767 | Zoom lens and imaging device having the same A zoom lens including, in an order from an object side to an image side, a first lens group having a positive refracting power, a second lens group having a negative refracting power, and a rear group including at least one lens group, the zooming operation being pe... | 12/28/2010 |
| 7830615 | Zoom lens and image pickup apparatus A zoom lens includes first to third negative, positive, positive lens groups. The second lens group includes first to fourth positive, negative, negative, positive lenses. The third and fourth lenses of the second lens group are bonded to each other to serve as a ce... | 11/09/2010 |
| 7830616 | Zoom lens, optical apparatus and manufacturing method A zoom lens comprises, in order from an object, a first lens group G1 having negative refractive power, a second lens group G2 having positive refractive power, and a third lens group G3 having positive refractive power. The first lens group G | 11/09/2010 |
| 7830614 | Zoom lens system and electronic imaging apparatus that uses the same A zoom lens system includes a negative first lens group, a positive second lens group, and a positive third lens group. Upon zooming from the short focal length extremity to the long focal length extremity, each of the first to third lens groups move along the optic... | 11/09/2010 |
| 7817352 | Zoom lens and camera with zoom lens A zoom lens of variable power ratio of the order of 3 in which the whole of the zoom lens is made up of three lens elements groups and the power configuration of each of the groups has an arrangement of negative, positive, and negative. The zoom lens includes, seque... | 10/19/2010 |
| 7817351 | Zoom lens system A zoom lens system includes, in order from the object side, a negative first lens group, a positive second lens group; and a positive third lens group. The first lens group includes, in order from the object side to the image side, a negative first lens and a positi... | 10/19/2010 |
| 7817350 | Zoom lens system, imaging device and camera An object of the present invention is to provide: a zoom lens system that has a high resolution, high capability of compensating curvature of field, a high zoom ratio of, for example, 3 or greater, a reduced weight, and a reduced overall optical length at the time o... | 10/19/2010 |
| 7808721 | Zoom lens system A zoom lens system which includes, in order from an object side, a first lens unit having a negative refractive power; a second lens unit having a positive refractive power; and a third lens unit having a positive refractive power, a space between the lens units is ... | 10/05/2010 |
| 7808720 | Standard zoom lens system A standard zoom lens system includes a negative first lens group, a positive second lens group, and a positive third lens group, in this order from the object. Upon zooming from the short focal length extremity to the long focal length extremity, the distance betwee... | 10/05/2010 |
| 7800834 | Zoom lens and imaging apparatus A zoom lens is provided and includes: in order from an object side thereof, a first lens group having a negative refractive power, a stop; a second lens group having a positive refractive power; and a third lens group having a positive refractive power. The magnific... | 09/21/2010 |
| 7791819 | Zoom lens system A zoom lens system includes a negative first lens group, a positive second lens group, and a positive third lens group, in this order from the object. Upon zooming from the short focal length extremity to the long focal length extremity, the distance between the neg... | 09/07/2010 |
| 7782544 | Zoom lens system and image pickup apparatus including the same Provided is a zoom lens system which includes a plurality of lens units separated from one another at intervals changed during at least one of zooming and focusing and an aperture stop. The plurality of lens units include a movable lens unit for displacing an image ... | 08/24/2010 |
| 7773312 | Zoom lens and image pickup apparatus having the same A zoom lens includes, in order from an object side to an image side, a first lens group of negative refracting power, a second lens group of positive refracting power and a third lens group of positive refracting power, wherein the first and second lens groups are c... | 08/10/2010 |
| 7755847 | Zoom lens system, imaging device and camera A zoom lens system comprising a first lens unit having negative power, a second lens unit having positive power and a third lens unit having positive power, wherein: the first lens unit comprises a first lens element having a concave surface at least on the image si... | 07/13/2010 |
| 7663809 | Compact zoom lens A compact zoom lens including in an order from an object side to an image side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a third lens group having a positive refractive power, wherein the firs... | 02/16/2010 |
| 7652826 | Three-unit zoom lens system and image pickup apparatus using the same A three-unit zoom lens system includes in order from an object side thereof a first lens unit G1 having a negative refracting power, a second lens unit G2 having a positive refracting power, a third lens unit G3 having a negative refracting powe... | 01/26/2010 |
| 7646548 | Zoom lens and image capturing apparatus A zoom lens in which a lens group located in the vicinity of an aperture stop includes two subgroups and one of the subgroups is shifted so that an image is shifted. An increase in the size of lens groups including a shift lens group can be prevented. In addition, t... | 01/12/2010 |
| 7626768 | Zoom lens and camera with zoom lens A zoom lens of variable power ratio of the order of 3 in which the whole of the zoom lens is made up of three lens elements groups and the power configuration of each of the groups has an arrangement of negative, positive, and negative. The zoom lens includes, seque... | 12/01/2009 |
| 7612949 | Zoom lens and imaging apparatus A zoom lens includes, in order from the object side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a third lens group having a positive refractive power. When a lens positional state changes from a... | 11/03/2009 |
| 7599126 | Zoom lens system, imaging device and camera A zoom lens system comprising a first lens unit of negative power, a second lens unit of positive power and a third lens unit of positive power, wherein in zooming, the lens units move respectively along an optical axis so that an interval of first lens unit and sec... | 10/06/2009 |
| 7589910 | Zoom lens, camera, and personal digital assistant The zoom lens includes a first lens group G1 having a negative refracting power, an aperture stop FA, a second lens group G2 having a positive refracting power, and a third lens group G3 having a positive refracting power, which are disposed in ... | 09/15/2009 |
| 7586691 | Variable-power imaging optical system and imaging device A variable-power imaging optical system is provided and includes three, negative, positive and positive lenses. A first group includes a negative lens and a positive lens. A second lens group includes a positive lens, a negative lens and an aberration-correcting len... | 09/08/2009 |
| 7580202 | Zoom lens system and image pickup apparatus including the same A zoom lens 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 negative refractive power, and a subsequent lens-unit set including at least one lens units. Intervals betwe... | 08/25/2009 |
| 7573650 | Zoom optical system and electronic system incorporating it The invention relates to a zoom optical system that makes it possible to offer a sensible tradeoff between cost savings and size reductions and an electronic system that incorporates it. The zoom optical system comprises a lens group having negative refracting power... | 08/11/2009 |
| 7551367 | Wide-angle lens, optical apparatus and method for focusing Providing a wide-angle lens having high optical performance, an optical apparatus using the same, and a method for focusing the wide-angle lens. The lens comprising, in order from an object, a first lens group G1 having negative refractive power, a second len... | 06/23/2009 |
