Projection unit for projection type display apparatus

Details Projection unit for projection type display apparatus Projection unit for projection type display apparatus

1996-06-18

1998-04-14

Peng, John K.

Television

Video display

Projection device

348759, 353 34, 353 66, 359236, 359457, H04N 574

Patent

active

057398755

ABSTRACT:
A projection type display apparatus incorporating a light receiver or a light transmitter, in which the light signal is received or transmitted through a screen or condensing lens disposed in its vicinity, and hence the luminous flux utility efficiency is high.
A projection type display apparatus capable of preventing deterioration of picture quality due to difference in color in the projection units, and the best picture quality is realized even when the projection lenses for different colors are composed of nearly same components.

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patent: 5157554 (1992-10-01), Kashihara
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patent: 5337093 (1994-08-01), Kaneko et al.
patent: 5469185 (1995-11-01), Lebby et al.
patent: 5530489 (1996-06-01), Henderson et al.

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