Projection screen and method for manufacturing the same

Details Projection screen and method for manufacturing the same Projection screen and method for manufacturing the same

2007-07-31

2007-07-31

Perkey, W. B. (Department: 2851)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural reflecting areas

C359S587000, C359S588000, C359S455000

Reexamination Certificate

active

10476547

ABSTRACT:
A projection screen and method of manufacturing provides clear images regardless of the brightness of the environment within which the projection screen is used. The projection screen includes an optical thin film comprised of a multilayer dielectric having alternating high reflectance layers for light in a particular wavelength and high transmittance for visible light except in particular wavelength ranges. The thickness of each of the dielectric multilayer is determined so that the optical thin film forms a band-pass filter.

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