Illuminated passive display from an oblique angle

Details Illuminated passive display from an oblique angle Illuminated passive display from an oblique angle

1981-12-21

1984-04-03

Corbin, John K.

Illumination

Supported by vehicle structure

Condition responsive

362 19, 362318, G02F 1133, F21V 914, F21V 500

Patent

active

044404743

ABSTRACT:
A non-light-emitting (passive) display such as a dichroic LCD is frontally illuminated with polarized light incident obliquely upon the display, the incident light having followed multiple paths to arrive at the display from multiple directions. Relative to a typical display viewing axis, some light arrives from one side of such axis and some light arrives from the other side of such axis. An appropriately positioned light emitter, preferably comprising a reflective cavity, lamp, and polarizer, casts some light directly on the display, and casts other light, which is also substantially collimated, on an appropriately positioned reflector which re-directs incident light to the display.

REFERENCES:
patent: 3864022 (1975-02-01), Moriyama et al.
patent: 4124279 (1978-11-01), Byles
patent: 4185895 (1980-01-01), Stephens et al.
patent: 4195915 (1980-04-01), Lichty et al.
patent: 4212048 (1980-07-01), Castleberry

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