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| Number | Title | Issue Date |
| 7710658 | Zoom lens systems with wavefront coding Zoom lens systems and methods for imaging incoming rays over a range of ray angles are disclosed. The incoming rays are characterized by at least phase. The zoom lens system includes an optical axis and is characterized by a plurality of modulation transfer function... | 05/04/2010 |
| 7706078 | Laser light irradiation apparatus and laser light irradiation method An object is to provide a laser light irradiation apparatus and a laser light irradiation method which reduce errors of an irradiation position of laser light to an irradiated object and allow irradiation with laser light of any size when the irradiated object is ir... | 04/27/2010 |
| 7433130 | Zoom lens and image projection apparatus having same A zoom lens telecentric on a reduction side includes a first negative lens, a second negative lens and a first positive lens arranged from the enlargement side to the reduction side. At least one of the first and second negative lenses has an aspherical surface. The... | 10/07/2008 |
| 7391578 | Projection zoom lens system and projector apparatus using the same A projection zoom lens includes, in order from an enlargement side, a first lens unit G1 of negative refracting power, a second lens unit G2 of positive refracting power and a third lens unit G3 of positive refracting power. Focusing is implemen... | 06/24/2008 |
| 7382552 | Zoom optical system A zoom optical system includes in order from a reduction side to a magnification 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 fourth lens unit ha... | 06/03/2008 |
| 7362509 | Zoom lens A zoom lens includes, in sequence from the object side: a first lens group with an overall negative refractive power; and a second lens group with an overall positive refractive power. A zoom factor changes by moving the second lens group. Focal adjustments are made... | 04/22/2008 |
| 7298560 | Zoom optical system A zoom optical system includes, in order from the reduction conjugate side to the magnification conjugate 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; ... | 11/20/2007 |
| 7242530 | Ultra wide angle zoom lens in projection display system An ultra wide angle zoom lens for a projection display system including a liquid crystal panel displaying an image; a second lens group having a positive refractive power, formed by combination of two or more lenses, and correcting chromatic and spherical aberration... | 07/10/2007 |
| 7233447 | Zoom lens and projection display device which uses same A zoom lens for a projection display device includes, in order from the long conjugate length side, a first lens group having negative refractive power and including at least one aspheric surface, a second lens group having positive refractive power and including at... | 06/19/2007 |
| 7224498 | Image reading apparatus Disclosed is an image reading apparatus which includes an illumination system, a reading unit, and an imaging optical system for imaging imagewise information provided on a surface of an original as illuminated by the illumination system, upon a surface of the readi... | 05/29/2007 |
| 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 |
| 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 |
| 7177094 | Zoom lens, and electronic imaging system using the same The invention relates to a zoom lens that has high optical performance specifications such as high zoom ratios, wide angles of view, reduced F-numbers and limited aberrations, and enables an optical path to be easily bent. The zoom lens comprises a moving lens group... | 02/13/2007 |
| 7154680 | Zoom lens and electronic imaging system using the same The invention relates to an expensive zoom lens that has a zoom ratio of as high as about 5 and high optical performance and is very thin in its depth direction. With the invention, the optical path of the optical system is easily bendable by means of a reflecting o... | 12/26/2006 |
| 7126761 | Zoom optical system A zoom optical system provided, in order from a reduction side toward a magnification side, with: a first lens unit having positive optical power; a second lens unit having positive optical power; a third lens unit having positive optical power; and a fourth lens un... | 10/24/2006 |
| 7113346 | Variable magnification optical system A variable magnification optical system for forming an optical image of an object on the light-receiving surface of an image sensor with variable magnification includes: from an object side, a first lens unit having a positive optical power, a second lens unit havin... | 09/26/2006 |
| 7079328 | Path-bending zoom optical system A zoom optical system includes, in order from the object side, a first lens unit with negative refracting power, a second lens unit with positive refracting power, and a lens unit with negative refracting power. When the magnification of the zoom lens is changed in ... | 07/18/2006 |
| 7064902 | Zoom lens, camera, and mobile information terminal A first group optical system having a positive refracting power, a second group optical system having a negative refracting power, and a third group optical system having a positive refracting power are sequentially arranged from an object side toward an image side.... | 06/20/2006 |
| 7038857 | Projection zoom lens A projection zoom lens includes, from an image side to an object side, a first lens group having a negative refractive power, consisting of a number of lens elements and being movable along the optical axis of the projection zoom lens; a second lens group having a p... | 05/02/2006 |
| 7031074 | Zoom lens, camera, and mobile information terminal A first group optical system having a positive refracting power, a second group optical system having a negative refracting power, and a third group optical system having a positive refracting power are sequentially arranged from an object side toward an image side.... | 04/18/2006 |
| 6975778 | Method and system to adjust for image errors induced by a lens array An imaging apparatus includes an image acquisition section which converts a physical image to a digital image representation using non-ideal optics such as an array lens. This image acquisition results in a digital image representation containing errors or artifacts... | 12/13/2005 |
| 6930837 | Optical projection lens system An optical projection lens system for microlithography comprising in the direction of propagating radiation: a first lens group having positive refractive power, a second lens group having negative refractive power and comprising a waist (constriction) with a minimu... | 08/16/2005 |
| 6931207 | Zoom lens system and camera having the same A zoom lens system with a new structure is disclosed which realizes high optical performance by appropriately setting the structure of each lens unit and using a material with anomalous dispersion in an appropriate lens unit. Specifically, according to several aspec... | 08/16/2005 |
| 6927926 | Telephoto lens and telephoto lens apparatus having the same A telephoto lens includes, in order from the 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 negative refr... | 08/09/2005 |
| 6924938 | Zoom lens, camera, and mobile information terminal A first group optical system having a positive refracting power, a second group optical system having a negative refracting power, and a third group optical system having a positive refracting power are sequentially arranged from an object side toward an image side.... | 08/02/2005 |
| 6922285 | Optical system for photographing stereoscopic image, and stereoscopic image photographing apparatus having the optical system A stereoscopic image photographing optical system includes a pair of front optical components of negative refractive power, a combining optical element for superposing respective optical axes of the pair of front optical components on each other, a rear optical comp... | 07/26/2005 |
| 6909559 | Lens for reading an original, method and apparatus for reading an original, and image forming apparatus A lens for reading an original, comprises five lenses as a whole including two positive and two negative lenses, an aspherical surface provided on at least one surface of the five lenses, a construction of four lens groups for five lenses which include a cemented le... | 06/21/2005 |
| 6903804 | Projection optical system and projection and light exposure apparatus using it A projection optical system is disclosed that includes six lens groups, four of which are positioned in pairs symmetrically about a stop. The second and fifth lens groups, in order from the object side, may be positioned symmetrically about the stop but are also adj... | 06/07/2005 |
| 6900946 | Zoom system, in particular, a zoom system for an illumination device of a microlithographic projection system A zoom system that is particularly suited to use on an illumination device of a microlithographic projection exposure system and is configured in the form of a focal-length-zooming lens. The lenses of the zoom system define an object plane (6) and an image pl... | 05/31/2005 |
| 6894845 | System and methods for providing a zoom lens device The invention provides a zoom lens device that can include lens groups. A third lens group (compensator lens group) can be disposed between two lens groups (a second and a fourth lens groups) forming a variator lens group. The two lens groups (the second and fourth ... | 05/17/2005 |
| 6853493 | Folded, telecentric projection lenses for use with pixelized panels Projection lenses for use with pixelized panels (PP) are provided. The projection lenses have a negative first unit (U1) separated from a positive second unit (U2) by a reflective surface (RS) which folds the lens' optical axis. The lenses are telecent... | 02/08/2005 |
| 6844984 | Projection objective A projection objective having a variable focal length, preferably serving to image tilting mirror matrices or reflecting and/or transmitting LCDs, said projection objective comprising three groups of lenses (G1, G1, G3) arranged on a common optical axis, wherein, st... | 01/18/2005 |
| 6822806 | Imaging optical system and optical apparatus using the same An imaging optical system has a variable magnification optical system. The variable magnification optical system includes, in order from the object side, a first lens unit with positive refractive power, a second lens unit with positive refractive power, a third len... | 11/23/2004 |
| 6775071 | Image forming optical system and optical device using the same An image forming optical system includes, comprises, in order from the object side toward the image side, a first lens unit with positive refracting power, a second lens unit with positive refracting power, a third lens unit with negative refracting power, a fourth ... | 08/10/2004 |
| RE38465 | Exposure apparatus A projection optical system of the present invention has a first lens group G1 being positive, a second lens group G2 being negative, a third lens group G3 being positive, a fourth lens group G4 being negative, a fifth len... | 03/16/2004 |
| 6590716 | Projection zoom lens A projection zoom lens includes a first lens group having a negative refracting power, a second lens group having a positive refracting power, a third lens group having a negative refracting power, and a fourth lens group having a positive refracting powe... | 07/08/2003 |
| 6392820 | Optical system of a composite camera An optical system of a composite camera including a first image-forming optical system, a second image-forming optical system, and a condenser lens group, which includes two or more lens elements, or includes a single lens element on which at least one as... | 05/21/2002 |
| 6304388 | Zoom lens system A zoom lens system for focusing a finite distance object on an image plane as an image, has, in order from one conjugate side, a first lens unit having a positive optical power, the first lens unit being stationary during a zooming operation, a stop stati... | 10/16/2001 |
| 6104544 | Exposure apparatus A projection optical system of the present invention has a first lens group G1 being positive, a second lens group G2 being negative, a third lens group G3 being positive, a fourth lens group G4 being negative, ... | 08/15/2000 |
| 5914819 | Image pickup apparatus having lens holding unit and adjustment mechanism An image pickup apparatus has an adjusting mechanism for zoom lens unit so that the apparatus is made compactly. The zoom lens unit is constituted by a first group having a negative refracting power, a second group having a positive refracting power, a st... | 06/22/1999 |
