Optical arrangement for high-powered diaprojectors

Details Optical arrangement for high-powered diaprojectors Optical arrangement for high-powered diaprojectors

1990-02-09

1991-10-01

Lazarus, Ira S.

Illumination

Light source and modifier

Adjustable or repositionable modifier

362321, 353 88, F21V 1702

Patent

active

050539345

ABSTRACT:
An optical arrangement for high-powered projectors has a metal vapor lamp integrated into an ellipsoidal mirror, and an additional mechanical light valve for the continuous control of brightness of the stream of light, and is especially for use in multi-, super-shuttered and large projectors. The compact structure offers high optical efficiency and, at the same time, slight technical expense. The use of this technology makes possible the production of high-powered diaprojectors with small dimensions and light weight.

REFERENCES:
patent: 1885419 (1932-11-01), Dina
patent: 3307028 (1967-02-01), Bentham
patent: 4048493 (1977-09-01), Lee
patent: 4163277 (1979-07-01), Altman
patent: 4350417 (1982-09-01), Freeman
patent: 4668077 (1987-05-01), Tanaka

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