Enhanced contrast, maximum gain front and rear projection screen

Details Enhanced contrast, maximum gain front and rear projection screen Enhanced contrast, maximum gain front and rear projection screen

1991-01-04

1992-05-05

Hix, L. T.

Optical: systems and elements

Projection screen

G03B 2156

Patent

active

051113376

ABSTRACT:
A method of printing a translucent coating onto the film backing portion of front or rear projection screens to provide an economical and efficient process of obtaining sharper definition and maximized gain, both of which can be varied in form and substitutent content depending on the amount of ambient light present in the environment in which these screens will be used. Additionally, front and rear projection screens are disclosed which have enhanced optical contrast provided by unique patterns printed onto a film backing.

REFERENCES:
patent: 3811750 (1974-05-01), Coulthard
patent: 3844644 (1974-10-01), Martinez
patent: 4201449 (1980-05-01), Campion et al.
patent: 4792209 (1988-12-01), Laine et al.
Letraset Graphic Materials Handbook, copyright 1987, pp. 239, 240, 242, 243, 246, 249, 250, 253.

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