Dual beam optical system

Details Dual beam optical system Dual beam optical system

1975-06-09

1976-11-02

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

250575, G01J 142, G01N 2126

Patent

active

039899489

ABSTRACT:
To compensate for variations in the intensity of light emitted from different locations within a lamp or in different directions from the lamp, a flat, thin, radiating member is positioned to receive intense light from the lamp and to radiate two divergent beams of light with proportional intensities in directions transverse to the member through collimating means oriented on the same light radiating spot. Light from the lamp, in one embodiment, is focused onto a spot on the side of the radiating member opposite the collimating means with an ellipsoidal reflector and, in another embodiment, the required intensity is obtained by positioning a lamp near the side of the radiating member opposite the collimating means.

REFERENCES:
patent: 1118868 (1914-11-01), Kerschbaum
patent: 2411672 (1946-11-01), VAN Den Akker
patent: 2551542 (1951-05-01), Marsh et al.
patent: 3463927 (1969-08-01), Allington
patent: 3490875 (1970-01-01), Harmon et al.
patent: 3552863 (1971-01-01), Smith
patent: 3783276 (1974-01-01), Allington

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