Device for forming a picture

Details Device for forming a picture Device for forming a picture

1989-04-28

1990-09-04

Arnold, Bruce Y.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340754, G02B 2722

Patent

active

049539493

ABSTRACT:
For forming a composite picture, at least two transparent constituent pictures (12, 13) are arranged on behind the other with the transmittances of the individual picture elements (21-25) being selected in such a way that the average value of the products of the transmittances of those picture elements of the constituent pictures which are disposed behind each other in the viewing direction, taken over a plurality of adjacent picture elements, yields the transmitttance of the composite picture to be formed. The two constituent pictures may be entirely independent of each other and of the picture to be generated, whereby only the range of transmittance values is limited to a specific extent. If the two constituent pictures are arranged one behind the other with a specific spacing it is also possible to obtain steroscopic pictures. In this particular case the two constituent pictures may be formed by LCD displays, which rotate the plane of polarization of the transmitted light (18a, 18b, 18c).

REFERENCES:
patent: 3891305 (1975-06-01), Fader
patent: 4384763 (1983-05-01), Russo
patent: 4547043 (1985-10-01), Penz
patent: 4717949 (1988-01-01), Eichenlaub

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