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6590718 Projection exposure system having a reflective reticle  
A projection exposure system for microlithography includes an illuminating system (2), a reflective reticle (5) and reduction objectives (71, 72). In the reduction objective (71, 72), a first beam...
6590715 Optical projection system  
An optical projection lens system comprising one lens with an aspherical surface and comprising a first bulge followed by a first waist followed by a second bulge, wherein the diameter of the...
6583940 Projection system  
A projection system that is capable of providing a high-performance projection system and producing a high contrast projection image by using an optical modulation element, which can be positioned...
6563650 Compact, telecentric projection lenses for use with pixelized panels  
Telecentric projection lenses for use with pixelized panels (PP) are provided. The projection lenses have a negative first unit (U1) which has at least one negative meniscus element (N1) having at...
6542317 Optical system for crystallization tool  
The present invention provides an optical system for crystallization tool for producing an crystallized silicon thin film by using an excimer laser as a light source to crystallize an amorphous...
6542308 Projection display apparatus and projection lens device for use therein  
A projection display apparatus having a light source for generating a white light, a liquid crystal panel for modulating an incident light from the light source, a polarizing plate which is...
6542311 Zoom lens and projection type display apparatus using the same  
A zoom lens comprises first to fifth lens groups successively from the enlargement side. The first lens group is fixed upon changing power and has a negative refracting power and a focusing...
6542316 Wide-angle projection lens and a projection-type image display device  
A wide-angle projection lens is disclosed having three lens groups of negative, positive, and positive refractive power, respectively, in order from the enlarging side, and that favorably corrects...
6529336 Color corrected projection lenses employing diffractive optical surfaces  
A projection television system (10) is provided which has a CRT (16) and a projection lens system (13) for forming an image on a screen (14). The projection lens system (13) is characterized by a...
6522453 Projection device and a projection lens  
A projector device is disclosed which uses light that is spatially modulated by a DMD having mirrors which are moveable between Off and On positions in response to image information input to the...
6509937 High performance projection television lens systems  
Projection lens systems for use in CRT projection televisions are provided. The lens systems include a negative lens unit (U4) which is associated with the CRT during use of the lens system and...
6504652 Apparatus and method for laser processing  
A CO2 laser beam 12 is converted into a beam of uniform intensity at the position of a phase matching element 15 by an intensity converting element 14 and the phase matching element 15. Then, the...
6476981 Retrofocus lens system and projection display apparatus  
A retrofocus lens system comprises 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. The first lens group...
6476974 Projection lenses for use with reflective pixelized panels  
Projection lenses (13) for use with pixelized panels (PP) are provided. The projection lenses have a negative first unit (U1) which has at least one aspheric surface and a positive second unit...
6473236 Projection lens and system  
Projection lenses and projection lens systems are telecentric between an illumination subsystem and a set of imagers. The lenses and systems can exhibit color fringing correction, uniform imager...
6473242 Projection lens  
The projection lens comprises, in order from the object side of the lens to the modulator side of the lens, a first lens group having a positive power, including a positive lens element, a second...
6457829 Projection device comprising a correction lens arranged between a prism optical system and at least one of three optical modulation elements  
A transparent member having refractive power as a result of curved surface thereon is used in one or more light paths of a three-color projection device in order to correct for the lateral color...
RE37846 Projection optical system and exposure apparatus using the same  
The present invention relates to an exposure apparatus using a projection optical system to realize a small size and the bitelecentricity as securing a wide exposure area and a large numerical...
6452727 Projection lens  
A projection lens arranged to project an image formed on a display panel onto a screen includes a plurality of lens units movable along an axis for varying magnification, wherein at least one of...
6449101 Projection zoom lens with a long back focal length and exit pupil position  
A projection lens has five optical groups, labeled OI to OV, having effective focal lengths fI to fV, respectively. The optical groups move on an optical axis to perform zooming and focussing...
6445512 Projection television lens systems having improved modulation transfer functions  
Six-component projection lens systems (13) for use in CRT projection televisions (10) are provided. To provide an improved overall modulation transfer function across the field of view of the...
6429971 Focusing method for a decentered optical system  
A focusing method for a decentered optical system including a decentered lens element has translationally moving and inclining at least one lens element for different object distances, in such a...
6425667 Projection lens unit and projector using the same  
A projection lens unit is provided that is reduced in size and profile. The projection lens unit may include a plurality of lenses of which at least one lens disposed at the base end opposite to...
6424471 Catadioptric objective with physical beam splitter  
A catadioptric projection objective comprises an object plane, a physical beam splitter, a concave mirror, an image plane, a first objective part, a second objective part, and a third objective...
6417971 Zoom projection lens having a lens correction unit  
A zoom projection lens for use with LCD or DMD panels is provided. The lens has two units U1 and U2, which are moved relative to one another for zooming. It also has a corrector unit (CR) at a...
6404564 Projection lens  
A projection lens having a first lens group of negative refractive power and a second lens group of positive refractive power, in order from the enlarging side of the projection lens. A stop is...
6366360 Method and a system for correcting distortion aberrations in high resolution images  
The method and a system for determining coefficients correct distortion aberration based upon corresponding portions of partially overlapping images. These images are generally generated without...
6366410 Reticular objective for microlithography-projection exposure installations  
A REMA objective is realized by introduction of a few (1 to 5 units) aspherical surfaces of high-quality correction with a low number of lenses (no more than 10), and low path in glass (maximum...
6349005 Microlithographic reduction objective, projection exposure equipment and process  
A microlithographic projection objective with a lens arrangement, has a a first lens group of positive refractive power, a second lens group of negative refractive power, a third lens group of...
6317269 Projection lens and projector apparatus  
A projection lens comprises, successively from the enlargement side, a first lens group having a negative refracting power, a second lens group having a positive refracting power, and a third lens...
6317268 Movie projection lens  
A movie projection lens (40) for forming an image over the visible spectrum, at high magnification is disclosed. The movie projection lens (40) comprises in order, from a movie screen (62) side of...
6310731 Anastigmatic anamorphic lens  
An anastigmatic anamorphic lens, in particular for the projection of Cinemascope films, with a high aperture and an anamorphic factor of greater than 1.7. The anastigmatic anamorphic lens...
6310726 Image projecting device  
An image projecting device is provided with a light source, a modulating device that modulates the light emitted by the light source in accordance with an image to be projected, and a projecting...
6301056 High speed retrofocus projection television lens systems  
Projection lens systems (13) for use in CRT projection televisions (10) are provided. From the screen side, the systems have three lens units (U1, U2, U3), the first two units (U1, U2) forming a...
6301057 Long focal length projection lenses  
A projection lens for use with LCD or DMD panels is provided. The lens has three lens units, the first unit having a weak power and at least one aspheric surface, the second unit having a positive...
6297860 Partial color-corrected projection lens system  
Projection lens systems (13) for use in projection televisions are provided. The systems are characterized by a screen side lens unit (U1) which: (1) has a weak optical power; (2) has a negative,...
6295166 Projection lens for projection type of television system  
A projection lens for a projection type of television system which comprises a positive power first lens having a convex surface on the image side, a positive power second lens having a convex...
6275343 Projection optical system  
A projection optical system has, from the enlargement side to the reduction side, a first, a second, and a third lens unit, and an aperture diaphragm. The negatively-powered first lens unit...
6268458 Coupler fluids for projection televisions  
Coupling fluids for use in optically coupling a projection lens system of a projection television to a cathode ray tube (CRT (16)) are provided. The fluids have: (1) at least one polymer having a...
6249382 Illumination optical system and projection exposure apparatus using same  
An illumination optical system and projection exposure apparatus (100) using same. The illumination optical system includes a predetermined conjugate plane (A) optically conjugate with respect to...
6239424 Light detecting system for detecting light projected from a projector  
The invention relates to a light detecting system for detecting light projected from a projector. When the projector is initiated, it will project a picture image forward. The light detecting...
6239917 Thermalization using optical components in a lens system  
Projection lenses and projection lens systems are telecentric between an illumination subsystem and a set of imagers. The lenses and systems can exhibit color fringing correction, uniform imager...
6226129 Imaging optical system and image forming apparatus  
Disclosed is an imaging optical system and an image forming apparatus that provide a small-size design and high resolution. An optical system (telecentric optical system) between the composite...
6208470 Telecentric projection lens  
A projection lens (400) having a BFD:EFL, ratio in the range of 0.80:1 to 1.60:1, an air equivalent BFD of at least 4.3 inches, a throw ratio in the range of 3:1 to 6:1, and lateral color...
6201647 Image display apparatus  
An image display apparatus has a display unit and an eyepiece optical system. The display unit displays a two-dimensional image. The eyepiece optical system projects the two-dimensional image into...
6198576 Projection optical system and exposure apparatus  
Projection optical systems are provided for use in an exposure apparatus that have a numerical aperture greater than 0.63, a reduced field curvature of pupil at the aperture stop and are able to...
6195209 Projection lenses having reduced lateral color for use with pixelized panels  
Projection lens for use with pixelized panels are provided which consist of a first lens unit which has a negative power and a second lens unit which has a positive power. The V-values and...
6188522 Projection lens and projector using the same  
The present invention provides a projection lens for projecting light from a light source onto a screen to form a magnified image, including two joined lenses, each of which includes a negative...
6188523 Projection lens unit for projector  
A projection lens unit for a projector employed to a projector having a light source and a display device disposed slantingly with respect to an optical axis of light irradiated from the light...
6185047 Image projection system packaged to operate lying flat with a very low profile  
An image projection system implemented with a projector engine using a reflective light modulator, preferably a Digital Micromirror Device (DMD), operates lying flat with very low profile on a...