Controlled reflection viewing system

Details Controlled reflection viewing system Controlled reflection viewing system

1993-07-19

1994-07-19

Ben, Loha

Optical: systems and elements

Optical aperture or tube, or transparent closure

359815, 359613, 2 5, 2 8, 2426, G02B 500

Patent

active

053314735

ABSTRACT:
An improved double-lensed viewing system having a first lens or shield formed of shatterproof glass or plastic and mounted at an angle of at least 05.degree. from the vertical, together with a second lens or shield formed of partially opaque material mounted in optical alignment with the first lens or shield and extending parallel to the vertical.

REFERENCES:
patent: 3444561 (1969-05-01), Boyer
patent: 3577563 (1971-05-01), Raschke
patent: 3944345 (1976-03-01), Decorato
patent: 4397045 (1983-08-01), Schonwetter et al.
patent: 4916753 (1990-04-01), Khacdung
patent: 5029342 (1991-07-01), Stein et al.
patent: 5220453 (1993-06-01), McKinley et al.

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