Display devices

Details Display devices Display devices

1973-12-21

1978-05-09

Haroian, Harry N.

Optics: image projectors

Polarizer or interference filter

350150, G03B 2114, G02B 530, G02F 101

Patent

active

040884007

ABSTRACT:
An improvement in electro-optical display devices utilizing polarized light is disclosed, in which the linearly polarized light emerging from the display device is picked up by a diffuser and reaches the observer eyes after passing through a linear polarizer. The contrast is thus enhanced and the display can be used in presence of strong ambient lighting. The contrast can be still further improved by arranging at either side of the diffuser two suitably oriented quarter-wave plates.

REFERENCES:
patent: 3067413 (1962-12-01), Fischle et al.

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