Optical viewing device

Details Optical viewing device Optical viewing device

1993-04-16

1995-01-03

LaRoche, Eugene R.

Optical: systems and elements

Prism

359834, 359837, G02B 504

Patent

active

053791568

ABSTRACT:
An optical novelty device comprising a pair of wedge prisms disposed in a container having a viewing port and a light-entry port whereby an image viewed through said device appears as a symmetrical right-side-up refracted image regardless of the orientation of the device

REFERENCES:
patent: 542804 (1895-07-01), Piaget
patent: 999512 (1911-08-01), Miele
patent: 2375634 (1945-05-01), Dunning

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