Patent ID: 6268893
Filing Date: 2001-07-31
Classification: G03H

Abstract:
A fringe direct writing system comprising:a light source for projecting and transmitting light;an LCD display positioned to receive said transmitted light to alter said transmitted light to produce and project an image;an imaging lens disposed downstream of said LCD display, said imaging lens manipulating said image for further processing:an objective lens positioned to receive said image from said imaging lens and project a reduced image onto a photo-material plate, whereby said photo-material plate reacts to said image to form a corresponding image thereon;a moveable stage capable of selectively moving throughout a two dimensional plane, wherein said photo-material plate is disposed on said moveable stage such that said moveable stage is moved to selectively expose a portion of said photo-material plate to said reduced image; anda computer to control an operation of said direct writing system, whereby said computer generates a fringe pattern to be displayed by said LCD display, selectively operates a high speed shutter disposed upstream of said LCD display to control an exposure timing; and selectively controls said moveable stage to facilitate the generation of a predetermined image on said photo-material plate.