Downward viewing optical device

Details Downward viewing optical device Downward viewing optical device

1992-12-21

1995-06-06

Popek, Joseph A.

Optical: systems and elements

Mirror

Plural mirrors or reflecting surfaces

359840, 359856, 359860, 359862, 359871, 359876, G02B 718

Patent

active

054227593

ABSTRACT:
An optical viewing apparatus adapted to be worn on the face which enables the wearer to view directly downward while maintaining an erect head and a horizontal line of sight.

REFERENCES:
patent: 3019689 (1962-02-01), Paulsrud
patent: 4679916 (1987-07-01), Roller

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