Patent ID: 7055957
Filing Date: 2006-06-06
Classification: G02B,G03B,H04N

Abstract:
1. A laser projector comprising: laser apparatus for projecting a picture beam that includes exclusively laser light of wavelength about six hundred thirty-five (635) nanometers or longer; a reflective light valve having a beam-modulation stage for impressing an image onto the exclusively laser-light beam, and having a control stage, distinct from the beam-modulation stage, to control said impressing; means for writing an image incrementally onto successive generally slot-shaped portions of the control stage; and means for directing the exclusively laser-light beam onto successive selected generally slot-shaped portions of the modulation stage, and for generally synchronizing the exclusively laser-light beam with the image-writing means; wherein the laser apparatus initially projects the exclusively laser-light picture beam having substantially all rays substantially parallel to a common optical axis, with substantially no ray crossing the optical axis or otherwise passing through the center of any aperture stop; wherein the projector therefore has no telecentric zone; and the exclusively laser-light picture beam is not focused at or near the directing means or the modulation stage, or elsewhere within the laser projector.