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| Number | Title | Issue Date |
| 7679835 | Downsize, high performance, and wide range magnification zoom lens and camera apparatus A zoom lens includes a first lens band having a positive focal length, a second lens band having a negative focal length, and at least third to fifth lens bands having positive focal lengths. An aperture diaphragm is located in the vicinity of the third lens band. W... | 03/16/2010 |
| 7443599 | Magnification varying optical system and image taking apparatus A magnification varying optical system that directs light from an object to an image sensor includes in order from the object side: a first lens unit having negative optical power and including an optical axis changing element that changes the optical axis; a second... | 10/28/2008 |
| 7440194 | Zoom lens for use in projection devices An exemplary zoom lens for use in projection technology includes, in this order from the magnification side to the minification side thereof, a first lens group having negative refraction of power, a second lens group having positive refraction of power, a third len... | 10/21/2008 |
| 7433132 | Zoom lens system and electronic image pickup apparatus using the same A four-unit zoom lens system includes in order from an object side, a first lens unit having a positive refracting power, a second lens unit having a negative refracting power, a third lens unit having a positive refracting power, and a fourth lens unit having a pos... | 10/07/2008 |
| 7428107 | Zoom lens and image pickup apparatus having the same A zoom lens includes first to fifth lens units arranged in sequence from an object side to an image side, and having positive, negative, positive, negative, and positive refractive powers in that order. The zoom lens performs zooming by moving the first to fifth len... | 09/23/2008 |
| 7411740 | Zoom lens Disclosed is a zoom lens, which includes, in sequence from an object side to an image side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, a fifth lens group, a negative sixth lens group and a po... | 08/12/2008 |
| 7385766 | Variable focal length lens system and image capturing apparatus A variable focal length lens system includes first to fourth lens groups having positive, negative, positive, and positive powers, respectively, and a fifth lens group arranged in this order from an object side. When a lens zoom position is changed from a wide-angle... | 06/10/2008 |
| 7379249 | Downsize, high performance, and wide range magnification zoom lens and camera apparatus A zoom lens includes a first lens band having a positive focal length, a second lens band having a negative focal length, and at least third to fifth lens bands having positive focal lengths. An aperture diaphragm is located in the vicinity of the third lens band. W... | 05/27/2008 |
| 7375905 | Optical unit and image pickup apparatus having the same An optical unit for forming an object image according to the present invention includes: a reflection member for bending an optical axis of the optical unit; a front lens group arranged closer to an object side of the optical unit than the reflection member; a rear ... | 05/20/2008 |
| 7330316 | Zoom lens system Object is to provide an inner-focusing type zoom lens system carrying out focusing by moving a portion of a first lens group suitable for an auto-focus SLR camera. A zoom lens system includes, in order from an object, a first lens group having positive refractive po... | 02/12/2008 |
| 7317580 | Zoom lens In this invention, to provide a compact zoom lens having a small number of optical element groups to be driven and a simple moving mechanism, at least one of a plurality of optical element groups arranged in the lens system includes a refractive power variable eleme... | 01/08/2008 |
| 7307797 | Zoom lens system, lens barrel, imaging device and camera A zoom lens system comprising a plurality of lens units each composed of at least one lens element, wherein an interval between at least any two lens units is changed so that an optical image is formed with a continuously variable magnification, the zoom lens system... | 12/11/2007 |
| 7304803 | Zoom lens unit, imaging device and photographing device A zoom lens unit includes: a positive first lens group; a negative second lens group; and a positive subsequent lens group as a whole, the subsequent lens group includes a third lens group, and an aperture stop is disposed between the second lens group and the third... | 12/04/2007 |
| 7289274 | Telescopic zoom lens system A telescopic zoom lens system includes first through fourth lens groups, wherein upon zooming from the short to long focal length extremities, the first and fourth lens groups remain stationary, the second lens group moves toward the image side, and the third lens g... | 10/30/2007 |
| 7283310 | Zoom lens, and imaging system incorporating it A zoom lens system includes a first group G1 of positive power, a second group G2 of negative power, a third group G3 of positive power and a fourth group G4 of positive power. Upon zooming, at least the first group G1, the second ... | 10/16/2007 |
| 7280286 | Zoom lens system Providing a zoom lens system that can excellently correct aberrations over entire range from a wide-angle end state W to a telephoto end state T in spite of having a high zoom ratio including, in order from an object, a first group G1 having positive power, a... | 10/09/2007 |
| 7277232 | Zoom lens system An object is to provide a zoom lens system having compactness of about a normal lens, small number of lens elements, a zoom ratio about 2.9, good productivity, and high optical performance. The system includes, in order from the object, a first lens group with negat... | 10/02/2007 |
| 7268954 | Zoom lens system and image pickup apparatus using the same A zoom lens system comprising a multiple of lens units with various positive and negative powers that can, in at least one exemplary embodiment, be used to reduce ghost light. ... | 09/11/2007 |
| 7253965 | Zoom lens system with vibration reduction To provide a zoom lens system with a vibration reduction having a long back focal length suitable for a digital SLR camera, a high zoom ratio, and a wide angle of view of 70° or more. The system includes, in order from the object, a first positive lens group, a sec... | 08/07/2007 |
| 7248293 | Image-sensing apparatus having a zoom lens system that folds an optical path An image-sensing apparatus has a zoom lens system for forming an optical image of an object with variable magnification, which zoom lens system includes a plurality of lens units and achieves zooming by varying distances between the lens units, and an image sensor f... | 07/24/2007 |
| 7236308 | Zoom lens system, imaging device, and camera A zoom lens system, in order from the object side to the image side, comprises a first lens unit G1 having positive optical power, a second lens unit G2 having negative optical power, a third lens unit G3 having positive optical power and a four... | 06/26/2007 |
| 7227698 | Optical unit, and image taking apparatus provided therewith A plurality of lens units in an optical unit has at least: from the object side toward the image side, a first lens unit having a positive optical power, a second lens unit having a negative optical power, a third lens unit having a positive optical power, and a fou... | 06/05/2007 |
| 7227701 | Zoom lens and optical apparatus having the same A zoom lens, comprising, in order from an object side to an image side: (a) a first lens unit of negative optical power; (b) a second lens unit of positive optical power; and (c) a third lens unit of positive optical power, wherein a separation between the first len... | 06/05/2007 |
| 7221511 | Vibration-proof zoom lens and camera provided with the same A vibration-proof zoom lens comprises a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a positive fifth lens group, which are disposed in this order from a subject side. The second lens group m... | 05/22/2007 |
| 7215486 | Zoom lens and electronic imaging device having the same A zoom lens includes a most object-side lens unit remaining fixed on the optical axis when the magnification of the zoom lens is changed and a focusing operation is performed; a most image-side lens unit remaining fixed when the focusing operation is performed; and ... | 05/08/2007 |
| 7215477 | Zoom lens and image display apparatus including the zoom lens Provided is a projection lens, including: a plurality of moving lens units that move on an optical axis for zooming; and a plurality of plastic lenses containing plastic, in which when a focal distance of an i-th positive lens from a predetermined plane side of N po... | 05/08/2007 |
| 7212350 | Zoom optical system that includes a function of preventing blurring of an image A zoom optical system includes a function of preventing blurring of an image due to movements, such as shaking of the zoom optical system, by moving a lens element of the third lens group, in order from the object side, of four lens groups in a direction that is per... | 05/01/2007 |
| 7212348 | Compact zoom lens system A compact zoom lens system includes, from the object side to the image side, a negative first lens group (1), a positive second lens group (2), a positive third lens group (3) and a positive fourth lens group (4). The first lens group is ... | 05/01/2007 |
| 7199941 | Zoom lens There is provided a zoom lens capable of achieving stable optical quality even at the time of manufacture. The zoom lens includes a first lens group having positive refraction, a second lens group having negative refraction, a third lens group having positive refrac... | 04/03/2007 |
| 7196853 | Zoom lens system and image pickup apparatus having the same An exemplary embodiment is directed to a zoom lens system configured to impart an appropriate refractive power to an image stabilizing lens unit. The zoom lens system can include: a first lens unit; a second lens unit; and a rear lens group. The plurality of lens un... | 03/27/2007 |
| 7193786 | Zoom optical system and image pickup apparatus A zoom optical system according to the present invention is provided with, in order from an object side thereof: 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 refra... | 03/20/2007 |
| 7187504 | Zoom lens and image pick up apparatus including the same A zoom lens includes, in order from an object side to an image side: a first lens unit having positive optical power; a second lens unit having negative optical power; a third lens unit having positive optical power and an aperture stop; a fourth lens unit having ne... | 03/06/2007 |
| 7180681 | Varifocal lens with independent image plane position adjustment A varifocal lens that corrects aberrations in the visible and near-infrared regions includes, in order from the object side, a first lens group of positive refractive power, a second lens group of negative refractive power, and third and fourth lens groups, each of ... | 02/20/2007 |
| 7180684 | Zoom optical system A zoom optical system includes three lens groups, arranged as follows from the object side: a first lens group having positive refractive power, a second lens group having negative refractive power, and a third lens group having positive refractive power. The first ... | 02/20/2007 |
| 7177092 | Wide-angle, high-zoom-ratio zoom lens The invention relates to a four- or five-group zoom lens that ensures wide-angle performance, high zoom ratios and high quality with a more reduced number of lenses than ever before. The zoom lens comprises, in order from its object side, a first lens group G1 | 02/13/2007 |
| 7173768 | Zoom lens and image pickup apparatus A zoom lens has first to fifth lens groups G1 to G5 having positive, negative, positive, positive, and negative refractive power, in order from an object side. The first lens groups G1 includes a prism L2 for bending a light path. Zooming... | 02/06/2007 |
| 7167318 | Zoom optical system A simple two-group zoom optical system that favorably corrects aberrations includes, in order from the object side, a first lens group of negative refractive power, a stop, and a second lens group of positive refractive power. The first lens group includes, in order... | 01/23/2007 |
| 7164542 | Zoom lens, variable magnification group, camera unit and portable information terminal unit Disclosed is a zoom lens herein. The zoom lens has a first group G1 having a negative focal length, a second group G2 having a positive focal length and a third group G3 having a positive focal length in turn from an object side, and has an open... | 01/16/2007 |
| 7159988 | Projection optical unit and projection image display apparatus A projection optical unit has two lens groups. A first projection optical unit disposed closest to an image display element, temporarily forms a first enlarged image (magnification: M1) at the image display element side, rather than at a second projection opt... | 01/09/2007 |
| 7151637 | Zoom lens and a camera providing the same A zoom lens system comprises, in order from an object side, positive, negative, positive, negative, and positive refractive power lens groups, and while changing the magnification, the distance between the first lens group and the second lens group increases, the di... | 12/19/2006 |
