Image projection arrangement

Details Image projection arrangement Image projection arrangement

1992-05-05

1993-08-10

James, Andrew J.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 41, 359 70, 359 93, 353 31, 353 34, G02F 113

Patent

active

052354440

ABSTRACT:
An image projection arrangement is disclosed, comprising a radiation source (1), an image display system having at least one image display panel (10) in which the polarisation direction of an incident beam is modulated with the image information, and a polarisation-sensitive beam splitter (2), arranged between the source and the image display system, for forming two mutually perpendicularly polarised sub-beams (b.sub.1, b.sub.2). By having the two sub-beams be modulated by the same image display system (10) and by thereafter combining these sub-beams again a very efficient use can be made of the available light without the necessity of a significant more complex design of the arrangement.

REFERENCES:
patent: 4127322 (1978-11-01), Jacobson et al.
patent: 4239346 (1980-12-01), Lloyd
patent: 4500172 (1985-02-01), Gagnon et al.
patent: 4647966 (1987-03-01), Phillips et al.
patent: 4786146 (1988-11-01), Ledebuhr
patent: 4818074 (1989-04-01), Yokoi et al.
patent: 4826311 (1989-05-01), Ledebuhr
patent: 4850685 (1989-07-01), Kamakura et al.

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