Abstract:
A laser beam display includes at least a first and second plurality of laser beam sources, each of which may preferably be an array of semiconductor lasers, providing a plurality of laser beams in an optical path so as to reflect off of reflective facets of a movable reflector and illuminate a display screen. In a color display, each column of the laser array corresponds to a separate primary color. The separate rows of each array correspond to independently activated but simultaneously driven scan lines to be illuminated by the laser beam scanning apparatus. The plural laser beam arrays subdivide the width of the screen into smaller scan segments to increase the scanning angle or increase the horizontal scanning speed of the apparatus. Tilted facets illuminate different vertical sections of the screen with the laser beams as the reflector rotates. A scan format employing simultaneously illuminated diagonal scan tiles provides optimal use of the plural laser beam arrays.
Abstract:
PCT No. PCT/US92/04734 Sec. 371 Date Feb. 2, 1994 Sec. 102(e) Date Feb. 2, 1994 PCT Filed Jun. 5, 1992 PCT Pub. No. WO92/22109 PCT Pub. Date Dec. 10, 1992A laser beam scanning apparatus employs a movable reflector (32) having a large number of flat reflective sides (44) a deflector (16) which shifts the laser beam (10) at high speed across a plurality of the reflective sides (44). The movement of reflector (32) is synchronized with the deflection of the laser beam (10) to produce a desired scan pattern in a first scan direction (X). The reflective sides (44) of the movable reflector (32) may be angled relative to each other in a second direction (Y) to produce different scan lines thereby providing an X-Y scan pattern. The combined high speed beam deflection and motion of the reflector (32) provide scanning of the beam (10) in parallel scan segments thereby providing high scanning speed of the beam with a high degree of resolution.
Abstract:
PCT No. PCT/US92/04734 Sec. 371 Date Feb. 2, 1994 Sec. 102(e) Date Feb. 2, 1994 PCT Filed Jun. 5, 1992 PCT Pub. No. WO92/22109 PCT Pub. Date Dec. 10, 1992A laser beam scanning apparatus employs a movable reflector (32) having a large number of flat reflective sides (44) a deflector (16) which shifts the laser beam (10) at high speed across a plurality of the reflective sides (44). The movement of reflector (32) is synchronized with the deflection of the laser beam (10) to produce a desired scan pattern in a first scan direction (X). The reflective sides (44) of the movable reflector (32) may be angled relative to each other in a second direction (Y) to produce different scan lines thereby providing an X-Y scan pattern. The combined high speed beam deflection and motion of the reflector (32) provide scanning of the beam (10) in parallel scan segments thereby providing high scanning speed of the beam with a high degree of resolution.
Abstract:
A light beam display employs a polygon reflector (32) to scan one or more light beams (202, 302) in horizontal scan lines on a display screen. A horizontal scan line correction lens (236, 336) is provided in the optical path between the display screen (206) and the polygon reflector (32) to correct scan line bowing. An optical mechanical element (216, 316) is provided for vertically shifting the light beams so as to illuminate different scan lines of the display screen. Control electronics (220) is employed to adjust the timing on a line by line basis to correct vertical pixel line distortion introduced by the correction lens.
Abstract:
A light beam display employing interlaced light beam scanning comprising a display screen (206) having a vertical and a horizontal dimension, a source of a plurality of light beams (200, 300) and an optical path including a movable reflector (32) having a plurality of reflective facets (34) between the display screen (206) and the light beam source. The movable reflector (32) directs the plural light beams (202, 302) to the display screen (206) via one or more facets of the movable reflector (32) to simultaneously illuminate plural different scan lines of the display which are spaced apart by plural non-illuminated scan lines. An optical mechanical element (216, 316) is provided for vertically shifting the light beams so as to illuminate different scan lines of the display screen.
Abstract:
A light beam mixer combines two or more input light beams in a coaxial manner to provide an output beam. At least one of the input beams is altered in cross-sectional profile, for example, to an annular cross-sectional shape. Another input beam is placed within the altered beam by a beam combining element having a transmissive portion and a reflective portion to respectively reflect and transmit the two input beams. The beams are combined with minimal beam losses and without diverging a beam profile.
Abstract:
A laser beam display includes at least a first and a second plurality of laser beam sources (200, 300), each of which may preferably be an array of semiconductor lasers, providing a plurality of laser beams in an optical path so as to reflect off reflective facets (204, 304) of a movable reflector (32) and illuminate a display screen (206). In a color display, each column of the laser array corresponds to a separate primary color. The separate rows of each array correspond to independently activated but simultaneously driven scan lines to be illuminated by the laser beam scanning apparatus. The plural laser beam arrays subdivide the width of the screen into smaller scan segments to increase the scanning angle or increase the horizontal scanning speed of the apparatus. Tilted facets illuminate different vertical sections of the screen with the laser beams as the reflector rotates. A scan format employing simultaneously illuminated diagonal scan tiles provides optimal use of the plural laser beam arrays.