The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 19, 1982
Filed:
Mar. 23, 1981
Frederic N Forehand, Apalachin, NY (US);
Richard A Mecklenborg, Binghamton, NY (US);
The Singer Company, Binghamton, NY (US);
Abstract
A front projection screen includes a substrate backing member (12), a primer (14) sprayed on the substrate, a metallic silver mixture (16) adjacent to the primer, and a mist flake mixture (20) adjacent to the mixture (16). The mixture (16) includes a combination of lacquer binder (17), mixing color agent (18) and flattening agent (19); the mist flake mixture (20) includes a combination of silver powder flakes (23) and lacquer binder (17). By selectively changing and controlling the ratios of the components of the metallic silver mixture (16) and the mist flake mixture (20), the screen's peak gain and peak gain fall off can be controlled to produce screens exhibiting a selective, high peak gain, or a constant gain independent of the viewing angle, or a gradient gain.