3863246 is referenced by 59 patents and cites 4 patents.

Apparatus for providing backlighting of a display comprising the use of louvered material between a light source and the sides of a prism wherein the prism is utilized to transmit and direct light rays to the display surface. The use of the prism in some embodiments eliminates direct viewing of the light source through the louvered material.

Title
Backlighted display apparatus for preventing direct viewing of light sources
Application Number
05/377,487
Publication Number
3863246
Application Date
July 9, 1973
Publication Date
January 28, 1975
Inventor
Yeoman David C
Trcka James S
Agent
Lutz Bruce C
Assignee
Collins Radio Company
IPC
G09f 09/32
G02F 01/1335
G02F 01/13
G09F 13/14
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