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| Number | Title | Issue Date |
| 8184376 | Three unit zoom lens and image pickup apparatus equipped with same A zoom lens includes, in order from the object side, a negative lens unit, a positive lens unit and a positive lens unit. During zooming from the object side, the second lens unit moves, the distance between the first lens unit and the second lens unit decreases, th... | 05/22/2012 |
| 8159755 | Zoom lens and image pickup apparatus using the same A zoom lens includes: a first lens group having two lens components including a negative lens component of negative refractive power and a positive lens component of positive refractive power; a second lens group i... | 04/17/2012 |
| 8139293 | Projection lens with high resolution and reduced overall length An zoom projection lens includes, in this order from the screen-side to the SLM-side thereof, a negative lens group and a positive lens group, and satisfies: −2 | 03/20/2012 |
| 8089701 | Zoom lens system, imaging device and camera A zoom lens system of the present invention has a plurality of lens units each composed of at least one lens element and, in order from the object side to the image side, comprises: a first lens unit having negative optical power and composed of two lens elements; a... | 01/03/2012 |
| 8089700 | 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 unit having a negative refractive power, a second lens unit having a positive refractive power, the second lens unit including a positive lens, and a third lens unit having a positive ... | 01/03/2012 |
| 8085476 | Zoom lens system and an image pickup apparatus including the same A zoom lens system is provided that can be used as an optical system for an image pick-up device, which can have improved shading characteristics using multiple lens units, for example three lens units. ... | 12/27/2011 |
| 8085478 | Zoom lens system and image pickup apparatus including the same Provided is a compact and high optical performance zoom lens system, including, in order of from an object side toward an image side: a first lens unit with a negative refractive power; a second lens unit with a positive refractive power; and a third lens unit with ... | 12/27/2011 |
| 8085477 | Image forming optical system and electronic image pickup apparatus using the same It is preferable that for an image forming optical system a basic structure which includes a first lens group having a negative refracting power, which is made of one cemented lens component, a second lens group having a positive refracting power, a third lens group... | 12/27/2011 |
| 8077397 | Zoom lens and image projection apparatus including the same A zoom lens includes, in order from an enlargement conjugate side to a reduction conjugate side, a first lens unit of negative refractive power; a second lens unit of positive refractive power; a third lens unit of positive refractive power, the third lens unit havi... | 12/13/2011 |
| 8072690 | Projection zoom lens system and projection type display apparatus In order from a magnification side of the projection zoom lens system, five lens groups are arranged. The fourth lens group includes, in order from the magnification side, a negative lens having at least one aspheric surface, a positive lens, a negative lens concave... | 12/06/2011 |
| 8049969 | Zoom lens system and image pickup apparatus using the same A zoom lens system includes in order from an object side to an image side, a first lens unit having a negative refracting power, a second lens unit having a positive refracting power, a third lens unit having a negative refracting power, and a fourth lens unit havin... | 11/01/2011 |
| 8031410 | Zoom lens and image pickup apparatus equipped with same A zoom lens includes, in order from its object side, a first lens unit having a negative refracting power, a second lens unit having a positive refracting power, and a third lens unit having a refracting power. During zooming from the wide angle end to the telephoto... | 10/04/2011 |
| 8014077 | Variable power optical system and imaging device On condition that a first lens group adopts at least one plastic lens; a second lens group adopts at least any two adjacent plastic lenses; the first lens group monotonously moves from an object side to an image plane side in a zooming; the second lens group monoton... | 09/06/2011 |
| 8004772 | Zoom lens system, imaging device and camera A zoom lens system of the present invention has a plurality of lens units each composed of at least one lens element and, in order from the object side to the image side, comprises: a first lens unit having negative optical power and composed of two lens elements; a... | 08/23/2011 |
| 7995283 | Zoom lens and optical apparatus including zoom lens Provided is a zoom lens in which both higher-order components of distortion and lateral chromatic aberration are corrected in a retrofocus type optical system. The zoom lens includes, in order from a magnifying side, a first lens unit which is negative, a second len... | 08/09/2011 |
| 7982965 | Zoom lens, optical apparatus equipped therewith and method for manufacturing the zoom lens A zoom lens ZL installed in an electronic still camera 1 includes, in order from an object side, a first lens group G1 having negative refractive power, and a second lens group G2 having positive refractive power. A distance between the first le... | 07/19/2011 |
| 7978420 | Zoom lens and imaging apparatus A zoom lens includes: first, second and third lens groups having negative refracting power, positive refracting power and positive refracting power, respectively, disposed in the order from an object side. During zooming from a wide angle end to a telephoto end, the... | 07/12/2011 |
| 7969661 | Wide angle zoom lens and image pickup device using the same A wide angle zoom lens, includes, from an object side in the following order: a first lens group that has a negative refractive power; a second lens group that has a positive refractive power; and a third lens group. When variable magnification is carried out from a... | 06/28/2011 |
| 7957070 | Zoom lens and imaging apparatus A zoom lens includes: first, second and third lens groups having negative refracting power, positive refracting power and positive refracting power, respectively, disposed in the order listed from an object side to an image side, wherein during zooming from a wide a... | 06/07/2011 |
| 7952811 | Zoom lens and image pickup device Disclosed herein is a zoom lens formed by arranging 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 in order from an object side to an image side... | 05/31/2011 |
| 7948685 | 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... | 05/24/2011 |
| 7948684 | 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... | 05/24/2011 |
| 7944620 | Zoom lens A zoom lens includes a first lens group and a second lens group disposed between the first lens group and an image side. The first lens group has three lenses. Refractive powers of the three lenses arranged from an object side to the image side are respectively nega... | 05/17/2011 |
| 7880974 | Zoom lens and imaging apparatus A zoom lens includes a negative first lens group, a positive second lens group, and a positive third lens group; wherein, when changing power from a wide-angle end state to a tele end state, the first lens group moves such that air space between the first lens group... | 02/01/2011 |
| 7859764 | Variable-power optical system, image pickup device, and digital apparatus A variable-power optical system includes, in order from an object side thereof: a first lens group with a negative optical power; a second lens group with a positive optical power, moving when the power of the variable-power optical system varies; and a third lens g... | 12/28/2010 |
| 7855840 | Projection zoom lens and projection type image display device A projection zoom lens includes in order from an enlargement side: a first lens group with negative power; a second lens group with positive power; a third lens group with positive power; a fourth lens group with positive power; and a fifth lens group with positive ... | 12/21/2010 |
| 7817345 | Zoom lens and image projection apparatus including the same A zoom lens includes, in order from an enlargement conjugate side to a reduction conjugate side, a first lens unit of negative refractive power; a second lens unit of positive refractive power; a third lens unit of positive refractive power, the third lens unit havi... | 10/19/2010 |
| 7800831 | 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... | 09/21/2010 |
| 7787191 | Zoom lens A zoom lens including a first lens group with a negative refractive power and a second lens group with a positive refractive power is provided. The first lens group is composed of a first lens, a second lens, and a third lens. Refractive powers of the first lens, th... | 08/31/2010 |
| 7777965 | 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... | 08/17/2010 |
| 7768716 | Zoom optical system and electronic equipment using the same A zoom optical system that comprising: 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 which are arranged in order from an object side, a space betw... | 08/03/2010 |
| 7742235 | 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... | 06/22/2010 |
| 7742236 | Zoom lens and image pickup apparatus A zoom lens includes, in order from an object side, a first lens group having a negative power, a second lens group having a positive power, and a third lens group having a positive power. At least the first and second lens groups are movable during a change from a ... | 06/22/2010 |
| 7738183 | 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 unit having a negative refractive power, a second lens unit having a positive refractive power, the second lens unit including a positive lens, and a third lens unit having a positive ... | 06/15/2010 |
| 7710659 | Projection zoom lens system and projection type display apparatus A projection zoom lens includes a first lens group having a negative reflecting power and a second to fifth lens groups each having a positive reflecting power are provided in the order from the magnification side. Nine lenses are distributed in a manner that the fi... | 05/04/2010 |
| 7697215 | Zoom lens system, imaging device and camera The zoom lens system is used for forming an optical image of an object with a variable magnification, and, in order from the object side, comprises a first lens unit G1 of negative optical power, a second lens unit G2 of positive optical power and a th... | 04/13/2010 |
| 7679834 | Zoom optical system and image pickup apparatus provided with the same An zoom optical system comprises a prism component which comprises in order from an object side, an entrance surface having negative refracting power, and a reflecting surface, and movable groups which are movable when either of zooming or focusing is carried out. A... | 03/16/2010 |
| 7675689 | 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 in zooming from a wide-angle limit to a telephoto limit, the lens units move respectively along an op... | 03/09/2010 |
| 7643221 | Zoom lens and image pickup apparatus having the same A zoom lens comprises a first lens unit that does not move for zooming and that has a positive refractive power, a second lens unit that is configure to move to an image side during zooming from a wide angle end to a telephoto end and that has a negative refractive ... | 01/05/2010 |
| 7643222 | Zoom optical system and image taking apparatus using the same A zoom optical system comprising, 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 bein... | 01/05/2010 |
