Display device

Details Display device Display device

1974-12-23

1977-04-12

Corbin, John K.

Communications: electrical

Land vehicle alarms or indicators

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

58127R, 340336, G04B 1906

Patent

active

040171540

ABSTRACT:
A display device having a plurality of segment light polarizers for receiving incident light thereon and rotatable independently to jointly define sequentially different numerals in dependence upon their relative angular orientation. A common light polarizer is mounted sandwiched between two transparent plates forwardly of the light polarizer for polarizing light from the segment light polarizers and for viewing of the different numerals upon relative angular orientation of the segment light polarizers and relative angular orientation to the common light polarizer. The light polarizers are driven rotationally independently in timed relationship. A mask between the two transparent plates has openings therethrough positioned for viewing the numerals.

REFERENCES:
patent: 3096594 (1963-07-01), Skrobisch
patent: 3266033 (1966-08-01), Frohbach
patent: 3560966 (1971-02-01), Deshler et al.
patent: 3874163 (1975-04-01), Ikeno

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