Illuminating apparatus for projection purposes

Details Illuminating apparatus for projection purposes Illuminating apparatus for projection purposes

1990-08-30

1991-05-14

Hayes, Monroe H.

Optics: motion pictures

Projection light sources

362282, 362283, 362297, G03B 2100, G03B 2120

Patent

active

050150880

ABSTRACT:
In an illuminating apparatus for projection purposes, in particular a film projector or television image projector by the eidophor system, four condensers are located around a source of light in a cube-shaped housing, the condensers reproducing via the use of deflecting mirrors, an image of the light source on several, spatially adjacent imaging mirror segments, which in turn reproduce the condenser images superimposed upon one another, via an output mirror, on an image aperture of the projection optics.

REFERENCES:
patent: 2525598 (1950-10-01), Gruber
patent: 3043190 (1962-07-01), Mandler
patent: 3590239 (1971-06-01), Benard

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