Shading device of the LCD projecting plate

Details Shading device of the LCD projecting plate Shading device of the LCD projecting plate

1992-06-01

1993-07-13

Cuchlinski, Jr., William A.

Optics: image projectors

Miscellaneous

353 97, 353DIG5, G03B 2114

Patent

active

052278204

ABSTRACT:
A shading device of LCD projecting plate has a pair of shading board being capable of being adjusted to shade the rest projecting areas which are uncovered by the plate and to project the drawing or letters on the optical glass to a wall or a screen clearly whenever used with any projectors.

REFERENCES:
patent: 5076543 (1991-12-01), Mandai
patent: 5120125 (1992-06-01), Behr
patent: 5121984 (1992-06-01), Jones et al.

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