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| Number | Title | Issue Date |
| 7990621 | Projection lens and projection display device using the same Disclosed are a projection lens that has a simple inner focus structure, an appropriate back focal length, telecentricity, a high optical performance, and a small size and can effectively correct, particularly, lateral chromatic aberration, and a projection display ... | 08/02/2011 |
| 7986464 | Imaging system An image system adapted to a projection display apparatus includes a first lens group having a negative refractive power, a second lens group having a positive refractive power, an aspheric reflector, and a curved reflector. The second lens group includes an aspheri... | 07/26/2011 |
| 7965449 | Projection lens system and projection type display apparatus using the same A projection lens system includes, in order from the magnification side, a negative first lens group and a positive second lens group, and is telecentric on the reduction side. The first lens group includes a first lens formed as an aspheric lens which is disposed c... | 06/21/2011 |
| 7924508 | Projection lens and projection system having same A projection lens includes, in the order from a large conjugate side to a small conjugate side thereof, a negative lens group having a negative refractive power and a positive lens group having a positive refractive power. The positive lens group includes, in the or... | 04/12/2011 |
| 7911705 | Projection lens and projector An object of the invention is to provide a projection lens capable of sufficiently correcting lateral chromatic aberration at both of the wide-angle end and the telephoto end, with an increased zoom ratio, a less number of lens elements, and less variation in telece... | 03/22/2011 |
| 7885009 | Small projection lens and projection display device using the same A small projection lens includes a first lens, which is a biconvex lens, an aperture, an aperture diaphragm (or an aperture), a second lens, which is a negative meniscus lens having a concave surface facing a magnification side, a third lens, which is a positive men... | 02/08/2011 |
| 7880973 | Projection lens and projection display device using the same Disclosed are a projection lens that is faster than F1.95 and has a simple inner focus structure, a high optical performance, and a small size, and a projection display device. A projection lens includes a first lens group having a negative refractive power, ... | 02/01/2011 |
| 7800828 | Wide-angle lens and projection device using the same A wide-angle lens and a projection device using the same are provided. The wide-angle lens from an image side sequentially comprises a first lens group, a second lens group and a third lens group. The third lens group comprises an aperture stop. The first lens group... | 09/21/2010 |
| 7633684 | Lens for light emitting diodes mounted on a heat sink A lens particularly suited to elongated grooved lens holders such as heat sinks for light emitting diodes. The lens may have a curved surface which projects light in rectangular beams and a radial flange for engaging grooves of a grooved lens holder. Curvature is th... | 12/15/2009 |
| 7551363 | Fixed-focus lens A fixed-focus lens including a first lens group, a second lens group and a third lens group which are arranged in sequence from an object side to an image side is provided. The first lens group has a negative refractive power and includes a first lens and a second l... | 06/23/2009 |
| 7545573 | Projector optical system, projector, and method for forming real image in use of projector optical system A projector optical system for forming a real image by projecting an image of a display element has, sequentially from a screen side or an observation side, a first lens group having positive refractive power, an aperture diaphragm, a second lens group, and a third ... | 06/09/2009 |
| 7495840 | Very high-aperture projection objective A very high-aperture, purely refractive projection objective having a multiplicity of optical elements has a system diaphragm (5) arranged at a spacing in front of the image plane. The optical element next to the image plane (3) of the projection objec... | 02/24/2009 |
| 7466490 | Objective optical system for an endoscope An objective optical system is disclosed that is suitable for a high-precision endoscope that performs focusing by moving a single lens component. The objective optical system includes, in order from the object side, a front lens group, a middle lens group, and a re... | 12/16/2008 |
| 7460307 | Projector lens system To provide a compact and low-cost projector lens capable of appropriately performing temperature correction and obtaining excellent image quality although using a plurality of plastic lens elements, a first lens unit having negative refractive power and a second len... | 12/02/2008 |
| 7436597 | Projection lens A first lens group having a negative refractive power, an aperture diaphragm, and a second lens group having a positive refractive power are arranged in order from an enlargement side. A reduction side of a projection lens is made essentially telecentric. Further, c... | 10/14/2008 |
| 7423819 | Fixed-focus lens A fixed-focus lens including a first lens group, a second lens group, and a third lens group is provided. The first lens group has a negative refractive power, includes a plurality of lenses, and is disposed between an object side and an image side. The lenses of th... | 09/09/2008 |
| 7414781 | Catoptric objectives and systems using catoptric objectives In general, in a first aspect, the invention features a system that includes a microlithography projection optical system. The microlithography projection optical system includes a plurality of elements arranged so that during operation the plurality of elements ima... | 08/19/2008 |
| 7411742 | Focusing lens for LED A focusing lens for an LED is provided. The focusing lens for an LED, which concentrates light emitted from the LED so as to have directionality parallel to an optic axis, comprises: a transparent body; a first lens part formed in the body; and a second lens part co... | 08/12/2008 |
| 7403338 | Microlens for projection lithography and method of preparation thereof Methods and systems for effecting responses on surfaces utilizing microlens arrays including microoptical components embedded or supported by a support element and positioned from the surface at a distance essentially equal to the image distance of the microoptical ... | 07/22/2008 |
| 7391577 | Projection lens and projector A projector includes a projection lens having a first lens. The first lens is a plastic lens made by injection molding using a single gate, and has a gate mark on its outer edge. The first lens also has a weld line at the opposite side to the gate mark, which extend... | 06/24/2008 |
| 7366420 | Optical transmission device An optical transmission device for providing stable communication with a partner device by reducing errors in optical axis misalignment. Such errors are caused by uneven distribution of the light intensity in a received light beam resulting from atmospheric microsco... | 04/29/2008 |
| 7365907 | Rear projection image display apparatus A compact rear projection image display apparatus in which the projection distance in a projection optical system is substantially reduced and no reflection mirror is used, thereby eliminating a major cause of image trapezoidal distortion. The rear projection image ... | 04/29/2008 |
| 7339714 | Variable blazed grating based signal processing A light processing system includes an array of optical signal processing devices. The array of processing devices are operable to receive at least some of a first signal part and to modulate the first signal part based at least in part on a control signal received f... | 03/04/2008 |
| 7324169 | Projection optical system, projection television, and method of manufacturing lens included in projection optical system Provided are a projection optical system, a projection television, and a method of manufacturing a lens included in the projection optical system. The projection optical system includes lenses for projecting color beams onto a screen. A color filter layer, absorbing... | 01/29/2008 |
| 7310188 | Projection lens and projection type display device using the same A projection lens includes, in order from a magnification side, a first lens group, a second lens group and a third lens group. The first lens group includes, in order from the magnification side, a negative lens whose lens made of a non-resin, a plastic lens at lea... | 12/18/2007 |
| 7310187 | Projection objective, especially for microlithography, and method for adjusting a projection objective A method of adjusting a projection objective permits the projection objective to be adjusted between an immersion configuration and a dry configuration with few interventions in the system, and therefore to be used optionally as an immersion objective or as a dry ob... | 12/18/2007 |
| 7294814 | Microlithography projection objective including deformable mirror with adjusting elements and systems and methods using the same A catadioptric projection objective for microlithography has at least one curved mirror that is deformable and adjusting elements that can deform the deformable mirror. The adjusting elements are matched to given image errors and their correction. The invention is s... | 11/13/2007 |
| 7295378 | Zoom optical system A zoom optical system, in order from a reduction side to a magnification side, includes a first lens unit having positive optical power, a second lens unit having the positive optical power, a third lens unit having negative optical power, and a fourth lens unit hav... | 11/13/2007 |
| 7295379 | LED light converging system An LED light converging system includes an LED light source, and first and second lens units aligned in sequence along an optical axis. The LED light source provides source light. The first lens unit has a first focal length, and is disposed forwardly of and is spac... | 11/13/2007 |
| 7290886 | Illuminating system and method for improving asymmetric projection An illuminating system and method for improving asymmetric projection includes a light source producing a light beam to form a light path, a projection lens disposed in the light path, a light valve inserted in the light path between the light source and the project... | 11/06/2007 |
| RE39911 | Wide field of view projection lenses for compact projection lens systems employing pixelized panels A projection lens for use with LCD panels is provided. The lens has a first lens unit which includes a strong negative lens element having an aspherical surface which provides distortion correction, and a second lens unit which includes a first lens subunit separate... | 11/06/2007 |
| 7280285 | Projection lens and projection display device using the same A projection lens includes three lens groups, arranged as follows from the magnification side: a first lens group of negative refractive power, a second lens group of positive refractive power, and a third lens group of positive refractive power. The first lens grou... | 10/09/2007 |
| 7274513 | Off-axis projection optics and extreme ultraviolet lithography apparatus employing the same Off-axis projection optics that includes first and second mirrors positioned off-axis and sharing a confocal point that are arranged to reduce linear astigmatism. If a distance between an object plane and the first mirror is l1, an incident angle of light... | 09/25/2007 |
| 7259918 | Projection device A projection device includes an image source unit, a first projecting optical system, an intermediate optical system, and a second projecting optical system. The image displaying area of the image source unit is tilted with respect to a first virtual plane, and an i... | 08/21/2007 |
| 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 |
| 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 |
| 7209292 | Projection objective, especially for microlithography, and method for adjusting a projection objective A method of adjusting a projection objective permits the projection objective to be adjusted between an immersion configuration and a dry configuration. The projection objective includes optical elements arranged along an optical axis thereof, which include a first ... | 04/24/2007 |
| 7199862 | Beam-splitter optics design that maintains an unflipped (unmirrored) image for a catadioptric lithographic system The present invention is a catadioptric system having a reticle optical group, a beam splitter, an aspheric mirror, a baffle plate, a folding mirror and a semiconductor wafer optical group. The reticle optical group, the beam splitter and the semiconductor wafer opt... | 04/03/2007 |
| 7190528 | Zoom lens and image projection apparatus having the same A zoom lens comprises a plurality of lens units including a first lens unit disposed most adjacent to an enlargement side and having negative refractive power, wherein one or more lens units of the plurality of lens units are moved in the direction of the optical ax... | 03/13/2007 |
| 7184219 | Projection lens system and projector A projection lens system that is suited to a compact, wide-angle lens system. The projection lens system projects projection light from a light modulator onto a screen, wherein the projection lens system is constructed, in order from a screen side thereof, of a firs... | 02/27/2007 |
