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| Number | Title | Issue Date |
| 8064145 | Optical system and optical apparatus using the same An optical system includes a front lens group, a stop, and a rear lens group arranged successively in order from the object side toward the image side. The front lens group includes a solid material element having a refractive action. The rear lens group includes a ... | 11/22/2011 |
| 8023199 | Zoom lens and image pickup apparatus equipped with same A zoom lens has a plurality of lens units including, in order from its object side to image side, a first lens unit having a negative refracting power composed of two lens elements including a biconcave negative lens and a positive lens, and a second lens unit havin... | 09/20/2011 |
| 7933075 | Variable-power optical system and imaging apparatus The variable-power optical system is provided and includes a first lens group having a negative refractive power, a stop, and a second lens group having a positive refractive power, in order from an object side. The first lens group includes a first sub lens group h... | 04/26/2011 |
| 7907351 | Variable power optical system and imaging device A variable power optical system is provided and includes: in order from the object side, a first lens group having a negative refractive power and including a negative lens group and a positive lens group; a stop; and a second lens group having a positive refractive... | 03/15/2011 |
| 7880976 | Zoom lens system and camera including the same Disclosed is a zoom lens system in which a first lens unit having negative optical power and a second lens unit having positive optical power are arranged in the stated order from an object side to an image side, and in which an interval between the first lens unit ... | 02/01/2011 |
| 7872809 | Optical system and imaging system incorporating it The invention relates to an optical system that is capable of providing a zoom lens having improved image-formation capability with a reduced number of lenses, and fabricating a slim yet high-performance digital or video camera. The optical system comprises a cement... | 01/18/2011 |
| 7848030 | Image forming optical system and electronic image pickup apparatus using image forming optical system In an image forming optical system having a positive lens group, a negative lens group, and an aperture stop, the positive lens group being disposed at an image-plane side of the aperture stop and having a cemented lens, and when a straight line indicated by Nd=α×... | 12/07/2010 |
| 7800836 | Zoom lens A zoom lens includes, sequentially from an object side, a first lens group that is negative; and a second lens group that is positive, where focal length is varied by varying a distance between the first lens group and the second lens group. The first lens group inc... | 09/21/2010 |
| 7800835 | Zoom lens and image pickup device A zoom lens includes a first lens group having negative refractive power and a second lens group having positive refractive power, each including at least one plastic aspherical lens. The zoom lens satisfies the following Conditional Expressions (1) and (2), (1) 0.4... | 09/21/2010 |
| 7782545 | Zoom lens assembly and zoom lens module A zoom lens assembly and zoom lens module are provided, including a first lens, a second lens, a plurality of guiding blocks, a sheathing tube, a plurality of linking members and an adjusting tube. The first lens includes a plurality of curved surfaces disposed on a... | 08/24/2010 |
| 7768718 | Zoom lens A first group (10) having a negative refractive power, a diaphragm (St) and a second group (20) having a positive refractive power are arranged in order from the object side. Power variation from the wide angle end to the telephoto end is executed by m... | 08/03/2010 |
| 7755849 | Lens and related lens assembly An exemplary lens includes an optical axis, an optically active part, and an optically inactive part surrounding the optically active part. The optically inactive part includes a base and a peripheral sidewall extending in a direction parallel to the optical axis. T... | 07/13/2010 |
| 7733576 | Two-group zoom projection lens and projection display A two-group zoom projection lens is provided and includes: in order from a magnification side, a first lens group having a negative refractive power; and a second lens group having a positive refractive power, the second lens group including a front group and a rear... | 06/08/2010 |
| 7679838 | Zoom lens and optical apparatus including the same A zoom lens includes a first lens unit having a negative refractive power and a second lens unit having a positive refractive power, which are arranged in order from the object side to the image side. The zoom lens performs zooming by changing a distance between the... | 03/16/2010 |
| 7667900 | Zoom lens system and optical apparatus using the same Providing a zoom lens system excellently correcting various aberrations with accomplishing to be compact, lightweight, and slim upon being accommodated, and to provide an optical apparatus using the zoom lens system. The system consists of, in order from an object, ... | 02/23/2010 |
| 7652827 | Zoom lens A zoom lens includes a first and a second lens group respectively having negative and positive refractive power, and changes a focal length by changing a distance between the first and the second lens group. The second lens group includes a first lens having positiv... | 01/26/2010 |
| 7636202 | Zoom lens system and electronic image pickup apparatus using the same A zoom lens system comprising, in order from an object side: a first lens unit comprising two lens components; and a second lens unit comprising one lens component, during zooming, a space between the first lens unit and the second lens unit changing, the first lens... | 12/22/2009 |
| 7630146 | Two-unit zoom lens and image pickup apparatus equipped with same A zoom lens includes, in order from the object side thereof, a first lens unit G1 having a negative refracting power and a second lens unit G2 having a positive refracting power. During zooming from the wide angle end to the telephoto end, the distance... | 12/08/2009 |
| 7619832 | Imaging apparatus An imaging apparatus, configured to form an image on an image pickup element, includes, in an order from an object side toward an image side, a first optical unit having a negative refractive power, a second optical unit having a positive refractive power, and a thi... | 11/17/2009 |
| 7619831 | Zoom lens and projector unit To provide a compact, high-performance zoom lens having a small lens aperture for enlarging an image from a light valve such as a DMD for forming an image by changing a reflecting direction of light and projecting the image so enlarged on to a screen or the like, th... | 11/17/2009 |
| 7609458 | Projection apparatus, elevation angle control method therefor and recording medium A projection apparatus includes a distance measuring unit that measures a distance to a screen on which an image is to be projected; a projection unit that has a zoom mechanism unit capable of changing a zoom magnification of a projection image, executes focusing ba... | 10/27/2009 |
| 7599127 | Zoom lens system Providing a zoom lens system having excellently correcting various aberrations with accomplishing to be compact, lightweight, and slim upon being retracted. The system is composed of, in order from an object, a first group having negative refractive power, and a sec... | 10/06/2009 |
| 7576924 | Two-unit zoom lens system and image pickup apparatus using the same A two-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, and an aperture stop which is disposed between the first lens ... | 08/18/2009 |
| 7554748 | Zoom lens system An exemplary zoom lens system includes a negative first lens group and a positive second lens group. The first lens group includes a meniscus-shaped first lens with negative refracting power and a second lens with positive refracting power. The first lens has a conc... | 06/30/2009 |
| 7548380 | Zoom lens A zoom lens is disclosed. The zoom lens comprises a first lens group located adjacent to an object side and having a negative refractive power, and a second lens group located adjacent to an image side and having a positive refractive power, wherein zooming is made ... | 06/16/2009 |
| 7542215 | Zoom lens system and optical apparatus using the same A zoom lens system excellently correcting various aberrations with accomplishing compactness, lightweight, and slimness upon accommodating lens barrel. The system consists of, in order from an object, a first group G1 having negative power, and a second group... | 06/02/2009 |
| 7522350 | Zoom lens system and image pickup apparatus including the same A zoom lens system includes a first lens unit having a negative optical power and a second lens unit having a positive optical power in order from the object side to the image side. In a zooming operation, the distance between the first lens unit and the second lens... | 04/21/2009 |
| 7457050 | Zoom lens system for use with small electronic sensor A five-element 3:1 zoom lens system in which the first lens group has a negative power and includes two lens elements and the second lens group has a positive power and includes a pair of lens sub-groups, the first sub-group having a positive power and including a p... | 11/25/2008 |
| 7450320 | Zoom lens A zoom lens includes a first lens group with a negative refractive power and a second lens group with a positive refractive power, wherein the second lens group is disposed between the first lens group and an image side, and the first lens group and the second lens ... | 11/11/2008 |
| 7440196 | Image forming optical system and image pickup apparatus using the same An image forming optical system comprising: a first positive lens unit disposed closest to the object side in the image forming optical system; an aperture stop; and a second positive lens unit disposed closest to an image side in the image forming optical system, | 10/21/2008 |
| 7436601 | Two-group zoom lens and an electronic imaging apparatus having it The two-group zoom lens comprises in order from the object side, the first negative lens group, and the second positive lens group. Change of magnification from a wide angle end to a telephoto end is performed by narrowing the interval between two lens groups, and t... | 10/14/2008 |
| 7423812 | Zoom lens and projector employing zoom lens In a thin projector for projecting an image from a light valve such as a DMD, a compact zoom lens comprises, in order, a first lens group having a negative refractive power, a second lens group having a positive refractive power, a third lens-group having a negative... | 09/09/2008 |
| 7420611 | Electronic image pickup system The invention makes a suitable selection from zoom modes and lens elements so thin that the thickness of each lens group can reduced, thereby slimming down a zoom lens with great thoroughness and, hence, an electronic image pickup system. The electronic image pickup... | 09/02/2008 |
| 7417684 | Electronic image pickup system The invention makes a suitable selection from zoom modes and lens elements so thin that the thickness of each lens group can reduced, thereby slimming down a zoom lens with great thoroughness and, hence, an electronic image pickup system. The electronic image pickup... | 08/26/2008 |
| 7414665 | Imaging system The invention relates to an imaging system in which, while high image quality is maintained with the influence of diffraction minimized, the quantity of light is controlled, and which enables the length of the zoom lens to be cut down. The imaging system comprises a... | 08/19/2008 |
| 7405889 | Optical system and imaging system incorporating it The invention relates to an optical system that is capable of providing a zoom lens having improved image-formation capability with a reduced number of lenses, and fabricating a slim yet high-performance digital or video camera. The optical system comprises a cement... | 07/29/2008 |
| 7405887 | Zoom lens and imaging device using zoom lens The present invention is directed to a zoom lens used for image pick-up optical system of digital still camera, or video camera, and is composed, in order from the object side, of a first group GR1 including a reflection member for bending or folding the opti... | 07/29/2008 |
| 7405885 | Zoom lens A zoom lens includes a first lens group with a negative refractive power and a second lens group with a positive refractive power. The first lens group includes a first lens, a second lens, a third lens and a fourth lens arranged in sequence and refractive powers th... | 07/29/2008 |
| 7403341 | Zoom lens system and electronic image pickup apparatus using the same A zoom lens system comprising, in order from an object side: a first lens unit comprising two lens components; and a second lens unit comprising one lens component, during zooming, a space between the first lens unit and the second lens unit changing, the first lens... | 07/22/2008 |
| 7400455 | Zoom lens system and display apparatus A zoom lens system that has two lens groups with respectively negative and positive refractive powers in that order from a display medium, such as a screen, side is provided. The first lens group and the second lens group respectively include at least one aspherical... | 07/15/2008 |
