초록 ▼

A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each “pixel area”of the LCD and storage elements to store video signal data for each pixel, with optically shielded “dead spaces”between pixels to eliminate electric fiel

A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each “pixel area”of the LCD and storage elements to store video signal data for each pixel, with optically shielded “dead spaces”between pixels to eliminate electric field cross-talk and non-information-bearing light bleed-through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature. In one embodiment of the invention, use of a multi-color LCD with a stepped cavity, producing different thicknesses of LCD for the different wavelengths that pass through it, allows a linear correspondence between the wavelengths passing through the LCD to produce true black, high contrast and CRT-like color rendition. A dichroic mirror arrangement is used to overlap differently colored pixels in the projected image. Use of striped mirrors duplicate pixels, where necessary, eliminating spaces between pixels, creating a continuous image with no apparent stripes or dots. A special venetian-blind type of screen is also disclosed and methods for using the system to view three-dimensional video are also explained.

대표청구항 ▼

A display system, comprising: an element wherein an image may be formed thereon, wherein said element comprises at least two different areas, each displaying data corresponding to differently colored information; at least one lens array; a light source; and macro-prism means for breaking up light em

A display system, comprising: an element wherein an image may be formed thereon, wherein said element comprises at least two different areas, each displaying data corresponding to differently colored information; at least one lens array; a light source; and macro-prism means for breaking up light emanating from said light source into differently colored beams, said macroprism means comprising at least one prism structure which is much larger than a pitch of pixels on said element; wherein a principal ray of at least one light beam from the source illuminates said element at an angle other than normal incidence, and wherein the display system comprises means for shifting a beam of a given color vertically by one pixel and horizontally by one and one-half pixels with respect to a pixel being illuminated by a correspondingly colored beam which illuminates said element at normal incidence.