Method of and an apparatus for projecting a scanned two- or thre

Details Method of and an apparatus for projecting a scanned two- or thre Method of and an apparatus for projecting a scanned two- or thre

1989-10-04

1991-02-26

Haroian, Harry N.

Optics: image projectors

Miscellaneous

353121, G03B 2100

Patent

active

049957198

ABSTRACT:
A scanned 2- or 3-D modulated light pattern originating from a light source and represented by a matrix of pixels is projected onto a defined surface or into a defined region distant from the light source. A plurality of means for modulating light one operated between at least a first mode and a second mode. This operation is synchronized with the scanning of the matrix of pixels so that:
(a) respective modulating means is in the first mode when its associated plurality of pixels are being scanned; and (b) a respective plurality of pixels are not being scanned when its associated modulating means is in the second mode. When a modulating means is in the first mode, it allows light to be distributed from the defined surface or the defined region. When a modulating means is in the second mode, it allows the effect produced by any light incident on the desired surface or in the defined region to be reduced.

REFERENCES:
patent: 4072411 (1978-02-01), Frank et al.

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