Light beam concentrating, intensifying and filtering device

Details Light beam concentrating, intensifying and filtering device Light beam concentrating, intensifying and filtering device

1982-05-24

1984-07-03

Lechert, Jr., Stephen J.

Illumination

Light modifier

Adjustable or positionable

362 64, 362281, 362293, 362298, 362300, 362346, 362360, 362367, 362375, F21V 1702

Patent

active

044583036

ABSTRACT:
A light beam concentrating, intensifying and filtering device for use in combination with a parallel ray light source is comprised of a frame having a plurality of shutter leaves capable of opening and closing an aperature when actuated. Each shutter leaf is comprised of a colourless or coloured transparent portion and a portion that is coated on its inner surface with a reflective material.

REFERENCES:
patent: 3016454 (1962-01-01), Simms
patent: 4208100 (1980-06-01), Bischl

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