Patent · US Active

High contrast rear projection screen

US9176370B1 · kind B1 · utility

3Cited by

12References

12Claims

0Family size

Assignee

Google LLC · US

Inventors

Adam E. Norton · Palo Alto, US
Mary Lou Jepsen · Sausalito, US
Andrei Kazmierski · Pleasanton, US
Belle Fu · Taipei, TW

Key dates

Filing date	Jun 12, 2014
Grant date	Nov 3, 2015
Priority date	—
Expiry date	Jun 12, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG03B21/625
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A projection screen includes a transparent substrate having a first side and a second side, an array of lenses disposed along the first side of the transparent substrate, a dark film disposed across the second side of the transparent substrate, an array of holes disposed through the dark film, and an array of diffusing spots each aligned with a corresponding one of the array of holes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.