Illuminating apparatus

Details Illuminating apparatus Illuminating apparatus

1983-06-27

1985-01-29

Lechert, Jr., Stephen J.

Illumination

Revolving

362268, 362293, 362308, 362331, 362346, F21V 704

Patent

active

044970137

ABSTRACT:
An illuminating apparatus is provided with an illuminating unit for forming a plurality of secondary light sources, the illuminating unit having a light source, a light converging device for converging photoenergy emitted from the light source, and a first multi-beam forming optical element for forming multiple light beams. A second multi-beam forming optical element produces a uniform luminance distribution and forms multiple light beams. A first converging optical system converges the photoenergy emitted from the first multi-beam forming optical element on the second multi-beam forming optical element, and a second converging optical system converges the photoenergy emitted from the second multi-beam forming optical element on a photomask.

REFERENCES:
patent: 4206494 (1980-06-01), Lovering

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