Decorative optical device

Details Decorative optical device Decorative optical device

1977-09-06

1980-05-13

Evans, F. L.

40219, G02B 508

Patent

active

042026040

ABSTRACT:
An optical device, adapted to give varying "depth of field" effects. The device hereof utilizes first and second reflective surfaces, at least one of which is movable with respect to the other. A light source is interposed between the two reflective surfaces.

REFERENCES:
patent: 2042268 (1936-05-01), Michaus
patent: 2132473 (1938-10-01), En Holm
patent: 2698177 (1954-12-01), Engman

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