Invention Grant
- Patent Title: Screen film for light projection brightness enhancement
- Patent Title (中): 屏幕胶片用于光投影亮度增强
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Application No.: US12254446Application Date: 2008-10-20
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Publication No.: US07826135B2Publication Date: 2010-11-02
- Inventor: Patrick R. Destain , James F. Hallas
- Applicant: Patrick R. Destain , James F. Hallas
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Wade James Brady, III; Frederick J. Telecky, Jr.
- Main IPC: G03B21/56
- IPC: G03B21/56 ; G03B21/60

Abstract:
A front-projection screen that includes a prismatic film that comprises an outside surface of the screen. The film includes parallel prismatic grooved lines. Each of the lines have a draft surface, a groove surface, and, each of the lines are located on a first side of a base portion of the film. The screen also includes a diffuser-reflector layer adjacent to a second opposite side of the base portion. The outside surface of the screen is oriented to receive an incoming light exclusively through the draft surfaces of the lines. The incoming light has an angle of incidence of about 60 degrees or greater with respect to the normal of the outside surface. A draft-base angle between the base portion and the draft surface is about 75 degrees or greater.
Public/Granted literature
- US20100097699A1 SCREEN FILM FOR LIGHT PROJECTION BRIGHTNESS ENHANCEMENT Public/Granted day:2010-04-22
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