Projection-type display apparatus

Details Projection-type display apparatus Projection-type display apparatus

1990-03-23

1992-04-21

Arnold, Bruce Y.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359831, 358 63, 358206, G02B 2608, G02B 504, H04N 914, H04N 308

Patent

active

051073633

ABSTRACT:
A projection-type display apparatus has a light modulator for emitting a zero-order diffracted beam and a first-order diffracted beam which are added by a prism into a projecting light beam which is introduced into a light beam scanning system, which two-dimensionally scans a screen. The maximum intensity of the projecting light beam is increased to increase the brightness of the overall screen.

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patent: 4566760 (1986-01-01), Abramovitz et al.
patent: 4597630 (1986-07-01), Brandstetter et al.
patent: 4730295 (1988-03-01), Bressers
patent: 4770507 (1988-09-01), Arimoto et al.
patent: 4828371 (1989-05-01), McCaslin et al.
patent: 4888752 (1989-12-01), Arai

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