Illumination system

Details Illumination system Illumination system

1989-03-02

1991-09-10

Haroian, Harry N.

Optics: image projectors

Plural projection paths with single light source

353 34, 353 99, 362297, F21V 1304, G03B 2128

Patent

active

050468375

ABSTRACT:
A low-throughput illumination system is described, comprising a radiation source (1), a plurality of condensors (2, 14; 3, 15) for forming a plurality of beams (b.sub.1, b.sub.2) from the radiation supplied by the source and a first reflector (4, 5) for each beam, which reflectors direct the beam towards the principal axis (00'). The system comprises second reflectors (6, 7) which deflect the beams in the direction of the principal axis so that the beams have their narrowest constrictions (8, 9) in the exit plane (10) and are located close together.

REFERENCES:
patent: 2858731 (1958-11-01), Rehorn
patent: 3457401 (1969-07-01), Hoekstra
patent: 4127322 (1978-11-01), Jacobson et al.
patent: 4206494 (1980-06-01), Lovering
patent: 4567551 (1986-01-01), Choate
patent: 4642740 (1987-02-01), True

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