Light condensing illuminator

Details Light condensing illuminator Light condensing illuminator

1977-02-28

1978-10-03

Miller, J. D.

Illumination

Light source and modifier

Including reflector

362327, 350299, 353 64, F21V 700, F21V 500, G02B 508, G03B 2108

Patent

active

041187610

ABSTRACT:
A compact light condensing illumination system for the concentration of light at an area provides a light source capable of having a relatively shallow reflector with a relatively small aperture directing collimated light toward a planar reflector of rectangular configuration having a mirrored surface configured with relatively short grooves extending at an angle to the direction of the collimated light to uniformly reflect the light toward a planar grooved mirror disposed substantially at a right angle to the first mirrored surface and of relatively large surface to reflect the light in substantially parallel rays to a Fresnel lens of relatively low power for condensing of the light rays to concentrate the light at a preselected distance from the Fresnel lens.

REFERENCES:
patent: 1357034 (1920-10-01), D'Humy
patent: 1737027 (1929-11-01), Schoonmaker
patent: 3586849 (1971-06-01), Starkweather
patent: 3744892 (1973-07-01), Shipsey
patent: 3752575 (1973-08-01), Ataka
patent: 3877802 (1975-04-01), Greenspan

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