05270804 is referenced by 23 patents and cites 13 patents.

The disclosed device is aimed at improving the light output of this type of device without impairing its homogeneity in colour and luminance while, at the same time, limiting the amount of space occupied. In such a device, three optical valves are placed before three faces of a recombiner cube. The means used to separate a beam of white light into three beams of coloured light consist of a divider cube. The intersections of the treated surfaces of the, two cubes are aligned, and these treated surfaces are in sets of two in one and the same plane. Furthermore, outside the cubes, the optical paths of the three beams are identical, so that the optical distances between the source of white light and the valves are themselves identical.

Title
Color display system utilizing optical valves
Application Number
7/796249
Publication Number
5270804
Application Date
November 21, 1991
Publication Date
December 14, 1993
Inventor
Patrick Lach
Bordeaux
FR
Agent
Cushman Darby & Cushman
Assignee
Sextant Avionique
FR
IPC
H04N 9/31
View Original Source