Optics: image projectors – Polarizer or interference filter
Patent
1997-11-21
2000-02-15
Dowling, William
Optics: image projectors
Polarizer or interference filter
353 98, G03B 2128
Patent
active
060244518
ABSTRACT:
The invention relates to an illumination system (1) comprising, in this order, a radiation source (5) and an integrator system (11). First reflecting means are present in the exit plane (25) of the integrator system (11) and second reflecting means in the form of a reflective polarizer (29) are further present in the illumination system (1). An optical system (23) for at least partly imaging the exit surface of the integrator system (11) via the second reflecting means on the first reflecting means is present between the first reflecting means and the second reflecting means. Moreover, polarization-converting means are present between the first and the second reflecting means.
The invention also relates to an image projection device and to a presentation system provided with such an illumination system.
REFERENCES:
patent: 5098184 (1992-03-01), Van Den Brandt et al.
patent: 5535054 (1996-07-01), Shibuya
patent: 5601351 (1997-02-01), Van Den Brandt
patent: 5626408 (1997-05-01), Heynderickx et al.
patent: 5826959 (1998-10-01), Atsuchi
patent: 5853240 (1998-12-01), Tanaka et al.
patent: 5865521 (1999-02-01), Hashizume et al.
patent: 5898521 (1999-04-01), Okada
Damen Antonie W.
de Vaan Adrianus J. S. M.
Dowling William
Faller F. Brice
U.S. Philips Corporation
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