projection (Total 70273 Patents Found)

A projection tube includes a liquid crystal cell having liquid crystal material sandwiched between two plates. The cell is addressable by an electron beam and serves as a light valve for plane-parallel light with which the projection tube is illuminated from behind. On the side facing the liquid crystal material, the p...
A projection display for preventing reflected light beams produced during optical modulation or light compositing from reinjecting into the modulating liquid crystal panel, as well as to convert projected light or light impinged into a light compositing system into a linearly polarized light beam, thereby projecting hi...
A projection system is constructed using a field emission device 10. A single monochrome FED 10 can be used with projection system electronics 40 and lens 20 to create a monochrome picture on screen 30. Alternatively, a single monochrome FED 10 can project the proper image through color wheel 150 to create a color imag...
The present invention provides a projection optical system which projects an image on a first object plane onto a second object plane, comprising at least four optical members which are arrayed in turn from the second object plane, and made of an isotropic crystal, wherein the at least four optical members are formed b...
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 plane ( 8 ) that is a Fourier transform of the object plane. ...
An emitter for an electron-beam projection lithography system includes a photoconductor substrate, an insulating layer formed on a front surface of the photoconductor substrate, a gate electrode layer formed on the insulating layer, and a base electrode layer formed on a rear surface of the photoconductor substrate and...
A projection exposure apparatus and a method for producing a printed circuit board wherein, the whole pattern including pieces 10 and coupons 12 to be exposed on a print circuit board 2 is depicted on a photo mask 1 divided in six areas by divide line 19 , the exposure will be made with respect to the each div...
A member 6 with concave portions used to manufacture a member with convex portions is disclosed. Each of the member with concave portions and the member with convex portions has two major surfaces, and a plurality of convex portions are formed on one of the two major surfaces of the member with convex portions. The m...
A projection optical system for performing reduction projection of a pattern of a reticle onto a projection plane. The system includes a first mirror having a concave reflective surface, a second mirror having a reflective surface, a third mirror having a convex reflective surface, a fourth mirror having a concave refl...
The present invention relates to projection systems, more particularly to a method for visualising test pattern grids in such a projection system. An array of adjustable, directed light sources is described, which is to be used as a test pattern generator for alignment of at least one projector. Each light source is fi...
A set of at least two masks for the projection of structure patterns, coordinated with one another, by a projection system into the same photosensitive layer of a semiconductor wafer can include a second mask....
An image projection apparatus and an image projection method are provided. The image projection apparatus includes a projection light source, a scanning module, a reflection mirror and an optical detector. The projection light source provides a projection light beam and the scanning module drives the projection light b...
A projection type display device that displays an image with projected light onto a target to he projected, including a first sensor ( 12 ) that detects reflected light of the projected light; a second sensor ( 13 ) that detects an infrared ray in a predetermined range in an optical path direction of the projected ligh...
A light source system comprises: a light-emitting device for emitting a first light and a second light in sequence; a beam splitting system with which the first light is divided into one beam in a first range of wavelength and the other beam in a second range of wavelength, respectively emitted along a first optical pa...
A micromirror device including a drive unit, which includes a movable drive element, which is situated in a first plane, and a guiding device, and a mirror, which is elastically coupled to the drive element and is situated in the idle position in a second plane, which is in parallel to the first plane, the guiding devi...
A golf club head includes a body defining an interior cavity. The body includes a sole positioned at a bottom portion of the golf club head, a crown positioned at a top portion, and a skirt positioned around a periphery between the sole and crown. The body has a forward portion and a rearward portion. The club head inc...
Provided is an image projection apparatus, such as a projector, including a light source; an image generating element such as a DMD that receives light from the light source and forms an image; an image generating unit that irradiates the image generating element with the light from the light source; a first optical sy...
A projection display device that includes: a light source unit 1 that includes a discharge lamp 2 as a light source; an image formation unit; a projection optical system; and a light source cooling unit that cools the light source unit. The light source unit is disposed so that a lamp axis that connects two dischar...
An illumination system for a microlithography projection exposure apparatus for illuminating an illumination field with the light from a primary light source has a variably adjustable pupil shaping unit for receiving light from the primary light source and for generating a variably adjustable two-dimensional intensity ...
A laser projection system, intelligent data correction system and method which corrects for differences between the as-built condition and the as- designed condition of a workpiece which includes determining the as-built condition of a workpiece with a digitizer scanner and modifying data of the as-built condition or t...
Projection displays include a highlight projector and a main projector. Highlights projected by the highlight projector boost luminance in highlight areas of a base image projected by the main projector. Various highlight projectors including steerable beams, holographic projectors and spatial light modulators are desc...
Cette invention concerne une plaque de distribution de gaz pour un réacteur à plasma, comprenant une plaque diélectrique avant et une plaque diélectrique arrière reliées l'une à l'autre, des orifices d'injection de gaz s'étendant à travers la plaque avant et des canaux d'alimentation en gaz...
一种改进的面向3D打印的半色调投影与模型生成方法,根据给定的三维模型、投影接收面以及光源的基本参数,利用投影模拟方法,计算投影参考图像,将给定的灰度图像进行校正,得到照度图,将照度图的点与投影参考图像相对应,进行归一...
A REMA objective 123 images an object plane 1 onto the reticle plane 33 and has a lens group 300 disposed in the half of the objective close to the reticle. The object plane 1 lies at a finite spacing. In the lens group 300, the principal ray elevations are greater in magnitude than the elevations of the peripheral ray...