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9019597 Device for short-distance projection at a reasonably large angle with zoom and focusing  
The invention proposes a short-distance front projection system, that is to say with a wide angle, occupying a small volume and offering a possibility of focusing as well a zoom function. It makes...
9013798 Projection lens and optical engine  
A projection lens disposed between an enlarged side and a reduced side is provided. The projection lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth...
9001429 Optical system for projection and projection-type display apparatus  
In an optical system for projection that is telecentric on a reduction side, a correction lens group substantially consisting of a part of lens groups in the optical system for projection is...
8995062 Projection lens for projection display systems  
Projection lens having improved properties such as a high throughput are described. In one embodiment, a projection lens is described comprising in sequential order from a screen side a first lens...
8982473 Wide angle projection lens  
The present invention uses the concave hybrid architecture to form a wide angle projection lens with large numerical aperture. The wide angle projection lens includes a refraction system and a...
8976455 Variable-magnification projection optical system and projection display device  
A variable-magnification projection optical system substantially consists of a negative first lens group that is disposed at the most enlargement-side position and is fixed during magnification...
8976454 Variable-magnification projection optical system and projection display device  
A variable-magnification projection optical system substantially consists of a negative first lens group that is disposed at the most enlargement-side position and is fixed during magnification...
8970964 Projection objective lens system  
A projection objective lens system includes from an object plane to an image plane: a first lens group (S1) with a positive refractive power; a second lens group (S2) with a negative refractive...
8953250 Optical arrangement of autofocus elements for use with immersion lithography  
A lithographic projection apparatus includes a projection system having a last element, by which an exposure light is projected onto an upper surface of a wafer through liquid locally covering a...
8937773 Projection lens and projection display apparatus  
A projection lens that projects image information displayed on the reduction side conjugate position onto the magnification side conjugate position includes an aspherical lens having a positive...
8908269 Immersion catadioptric projection objective having two intermediate images  
A catadioptric projection objective for imaging a pattern provided in an object plane of the projection objective onto an image plane of the projection objective has a first, refractive objective...
8905555 Image projection apparatus provided with no relay lens  
An image projection apparatus is provided, which includes an illumination unit which generates illumination light, a first prism which receives the illumination light from the illumination unit...
RE45258 Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus  
In a projection optical system for use in an image projection apparatus illuminating an image display panel forming an image in accordance with a modulating signal with illumination light from a...
8894219 Image projector having an optical projection system with independently focusing lens  
An optical projection system for projecting an enlarged image on a projection surface is provided. The optical projection system includes an image forming element, a coaxial optical system and a...
8894212 Projector optical system having field lens changing optical angle of illuminated light  
A projector optical system is provided, the system including an illumination unit including illumination lenses illuminating light downwards, a display device receiving light illuminated from the...
8891172 Optical element and method  
The disclosure relates to an optical element configure to at least partial spatially resolve correction of a wavefront aberration of an optical system (e.g., a projection exposure apparatus for...
8879159 Lithography projection objective, and a method for correcting image defects of the same  
The disclosure provides a microlithography projection objective which includes a plurality of optical elements along the optical axis of the projection objective. The plurality of optical elements...
8872985 Video projector system  
Some embodiments provide for a modular video projector system having a light engine module and an optical engine module. The light engine module can provide narrow-band laser light to the optical...
8873151 Illumination system for a microlithgraphic exposure apparatus  
An illumination system of a microlithographic exposure apparatus comprises a condenser for transforming a pupil plane into a field plane. The condenser has a lens group that contains a plurality...
8873149 Projection optical system for coupling image light to a near-eye display  
Technology is described for a projection optical system which optically couples image light from an image source to a near-eye display (NED) of a wearable near-eye display device. The projection...
8830591 Projection lens and projection display apparatus  
A projection lens for projecting image information displayed on a reduction side conjugate position to a magnification side conjugate position, including a negative first lens group, a positive...
8830298 Wide-angle lens and imaging apparatus using the same  
A wide-angle lens comprising: an imaging lens system, including: a front lens group, an aperture, and a rear lens group, arranged in that order from an object side to an image side; wherein said...
8830590 Unit magnification large-format catadioptric lens for microlithography  
A unit magnification Wynn-Dyson lens for microlithography has an image field sized to accommodate between four and six die of dimensions 26 mm×36 mm. The lens has a positive lens group that...
8810915 Optical arrangement of autofocus elements for use with immersion lithography  
A lithographic projection apparatus includes a projection system having a last element from which an exposure light is projected onto a wafer through liquid in a space under the last element. A...
8801197 Projection optical system and projector including the same  
A projection optical system which, when projecting an image of an optical modulator onto a projection surface on an enlarged scale, differs the aspect ratio of the image of the optical modulator...
8786943 Low thermal stress catadioptric imaging system  
An imaging system having reduced susceptibility to thermally-induced stress birefringence comprising relay optics and projection optics. One of either the relay optics or the projection optics is...
8777424 Projection display having kohler illumination of projection lenses  
A projection display having at least one light source and also regularly-disposed optical channels. The optical channels comprise at least one field lens, to which respectively one object...
8780448 Lens blank and lens elements as well as method for their production  
A method for manufacturing a preferably asymmetrical lens element (5a) from a tempered blank (1) is characterized by: producing the lens element (5a) from a first partial volume (1a) of the...
8773765 Endoscope apparatus  
An endoscope apparatus includes an objective optical system mounted at a distal end portion of an endoscope, which is inserted into a tube cavity, and configured to form an image of an object in...
8760772 Projection zoom lens  
A projection zoom lens includes a front lens group, a rear lens group, and an aperture stop. The front lens group has negative refractive power and is disposed adjacent to an object side of the...
8760768 Optical projection system and projector including the same  
An optical modulation device side lens group has different powers in the longitudinal direction and the lateral direction of a liquid crystal panel. Therefore, as the entire system of the optical...
8746897 Image projector having an optical projection system with independently focusing lens  
An optical projection system for projecting an enlarged image on a projection surface is provided. The optical projection system includes an image forming element, a coaxial optical system and a...
8730572 Catadioptric projection objective  
A catadioptric projection objective for imaging a pattern provided in an object plane of the projection objective onto an image plane of the projection objective has a first, refractive objective...
8714755 Projection lens of an imaging module and imaging module  
A projection lens of an imaging module and the imaging module are provided. The imaging module further has a light modulator to project a first image with a first aspect ratio. The projection lens...
8702243 Image projection apparatus and interchangeable lens therefor  
The image projection apparatus includes a light modulating element modulating light according to an image signal, a correcting part performing correction processing on the image signal to decrease...
8699139 Variable-focal-length projection lens system and projection apparatus  
A variable-focal-length lens system for projection which achieves focusing by movement of the entire system has a second to a fourth lens group as focal-length-varying lens groups and a first lens...
8693109 Projector lens system and projector apparatus  
A projector lens system is provided. The projector lens system comprising, in order from a screen side thereof: a first negative lens that is made of resin and is convex on the screen side; a...
8675292 Projection lens and projection apparatus  
A projection lens for projecting an image beam is provided. The image beam is converted by a light valve from an illumination beam irradiating the light valve. The projection lens includes a first...
8657450 Projection optical system and image projection device  
A projection optical system includes a first optical system, a second optical system, and first and second reflection mirrors. The first and second reflection mirrors are arranged on an optical...
8649101 Projection apparatus  
A projection apparatus includes an illumination system providing an illumination light beam, a light valve disposed in a transmission path of the illumination light beam and converting the...
8649094 Low thermal stress birefringence imaging lens  
An imaging lens having reduced susceptibility to thermally-induced stress birefringence for imaging an object plane to an image plane; comprising: an aperture stop positioned between the object...
8616711 Oblique projector having movable free form lenses  
A projection type image display apparatus in which shortening of the projection distance (widening of the angle of view) and miniaturization of the projection optic system are realized is...
8605111 Method and apparatus for adjusting image colors of image projector  
Disclosed is a method for correcting color in a portable image projector in consideration of an effect of a background color when the portable image projector projects images. The method corrects...
8599488 Optical arrangement of autofocus elements for use with immersion lithography  
A lithographic projection apparatus includes a projection system having a spherical lens element from which an exposure light is projected through liquid in a space under the spherical lens...
8587873 Wide-angle projection lens for projection display systems  
Wide-angle projection lens, as well as optical engines and projection display devices comprising such projections lens are described. In one embodiment, a wide-angle projection lens is described...
8587872 Lens module  
A lens module includes a first lens group with a positive refractive power, a second lens group with a negative refractive power, and a third lens group with a positive refractive power. The first...
8573787 Projection type display apparatus  
In a projection type display apparatus for enabling to display an image, by projecting an image on an image display element(s), enlargedly, upon a nearly horizontal surface, such as, a table, a...
8562152 Collimator lens unit with aspheric surfaces for imparting a luminous flux density distribution  
A collimator lens unit includes at least two lenses and substantially collimates a beam of light emitted from a solid-state light source unit of a Lambert emission type, wherein at least two faces...
8508853 Projection lens and projection-type display apparatus  
A projection lens consists of first and second les groups and a stop. The first lens group is formed of a negative lens. The second lens group is formed of three positive lenses and a negative...
8508854 Optical element and method  
The disclosure relates to an optical element configure to at least partial spatially resolve correction of a wavefront aberration of an optical system (e.g., a projection exposure apparatus for...