Optical waveguides – Noncyclindrical or nonplanar shaped waveguide
Patent
1998-05-26
2000-02-08
Ullah, Akm E.
Optical waveguides
Noncyclindrical or nonplanar shaped waveguide
G02B 610
Patent
active
060235500
ABSTRACT:
The present invention relates to a backlight system for transmissive electro-optical modulator comprising: at least one source of light rays; at least one reflector for returning the light rays along a first direction referenced z; a means of transmission of light, positioned at the exit of the reflector in such a way as to transport the light rays along the z direction, one of the faces of the transmission means lying along the z direction comprising a micro-prismatic structure which specularly reflects the light rays and extracts them from the transmission means substantially along a second direction referenced x perpendicular to the first direction and a collimation means (20) situated between the source of light rays and the transmission meansz. The said collimation means (20) comprises an entrance face (21) inclined with respect to the first direction referenced z. The invention applies more particularly to retroprojection.
REFERENCES:
patent: 5161041 (1992-11-01), Abileah et al.
patent: 5202950 (1993-04-01), Arego et al.
patent: 5262880 (1993-11-01), Abileah
patent: 5396406 (1995-03-01), Ketchpel
patent: 5506929 (1996-04-01), P-K. Tai et al.
patent: 5661839 (1997-08-01), Whitehead
patent: 5854872 (1998-12-01), Chen-Yu Tai
Irlbeck Dennis H.
Thomson Multimedia
Tripoli Joseph S.
Ullah Akm E.
LandOfFree
Backlight system for transmissive electro optical modulator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Backlight system for transmissive electro optical modulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Backlight system for transmissive electro optical modulator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1687029