Patent ID: 6252565
Filing Date: 2001-06-26
Classification: G02B

Abstract:
An optical viewer for use with at least one source of d.c. power, at least one video signal and pulse synchronization signals in TV type format; said viewer including:a portion of a first shell with an inside surface generated by rotating an ellipse about its major axis, the ellipse having a primary and a secondary focal point on said axis and a reference plane that includes said axis, as well as primary and secondary normals to said axis extending from said respective focal points to said shell;a separate input and a common return electrode mounted on said shell for at least one d.c. power supply and each analog, horizontal pulse and vertical pulse signal present in said video signals;a modulated laser means mounted on said shell and connected to said electrodes to project a narrow main visible laser beam, centered in said reference plane between said normals, to said primary focal point;a plane reflector substantially centered on said primary point oriented to reflect said main beam to the raster intersection of said secondary normal and inner surface of said shell;an x-y scan motor, connected to said pulse signal electrodes, mounted between said shell and said reflector to angularly deflect said main beam in response to said horizontal and vertical pulse signals, whereby said scanned main beam defines an illuminated raster area around said raster intersection; andan elliptical mirror coated over said raster area to focus said scanned beam at said secondary focal point.