Patent №
US 4,387,959
Granted
1983-06-14
Filed 1981
Owner
ZENITH RADIO CORPORATION, A CORP. OF DE
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
06222836
A single-sheet (i.e. two-surface) rear projection screen for television applications is described, in which the front or viewer-facing surface is formed with vertically running lenticules for horizontal image light distribution and the rear or projector-facing surface is formed with horizontally running lenticules for vertical image light distribution. There is no need for a diffuser. The lenticule profiles on both surfaces vary as a function of distance from the projection axis in a manner calculated to accomplish several optical objectives: collimation, cosine power fall-off compensation, and rearward reflection gradient compensation. Computer programs for calculating the profiles are disclosed.
AI classification
Ownership
ZENITH RADIO CORPORATION, A CORP. OF DE
assignment · 41060275
Assignors
LANGE, HOWARD G., RONALD, SCHULMAN
On an employer assignment, the assignors are typically the inventors.