Projection-type display apparatus utilizing both zero-order and

Details Projection-type display apparatus utilizing both zero-order and Projection-type display apparatus utilizing both zero-order and

1990-03-22

1991-09-24

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358201, 358206, H04N 574, H04N 912, H04N 310

Patent

active

050518348

ABSTRACT:
An apparatus has a light modulator for emitting a first-order diffracted beam to scan a screen two-dimensionally and a zero-order diffracted beam which is two-dimensionally deflected and projected onto the screen. The zero-order diffracted beam is effectively utilized, and the projection-type display apparatus is capable of displaying a new image pattern in which a moving image and a character drawn with a single stroke are displayed in an overlapping manner.

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patent: 4611245 (1986-04-01), Trias
patent: 4833528 (1989-05-01), Kobayashi
patent: 4946233 (1990-08-01), Seto
patent: 4969730 (1990-11-01), van der Brandt

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