Image projection arrangement

Details Image projection arrangement Image projection arrangement

1989-03-22

1990-11-13

Cuchlinski, Jr., William A.

Optics: image projectors

Composite projected image

Multicolor picture

353 30, 353 34, 353 37, 350173, 350174, 350171, 350169, G03B 2128

Patent

active

049697307

ABSTRACT:
An image projection arrangement is described which comprises a light source (1) for producing a first light beam (b.sub.1), a reflective image display system (10) provided in the path of this light beam and a projection lens system (20), arranged in the path of a second light beam (b.sub.2) originating from the image display system. A beam-separating element (5) whose operating principle is based on total internal reflection of one of the beams (b.sub.1, b.sub.2) is provided in the light path between the light source and the image display system on the one hand and said system and the projection lens system on the other hand. This sresults in an adequate separation of these beams while the dimensions of the arrangement remain limited.

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