Optical element to reshape light with color and brightness uniformity

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