Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent
1991-09-19
1992-09-29
Henry, Jon W.
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
359636, G02B 2714, G02B 528
Patent
active
051518252
ABSTRACT:
A device for the generation of several light beams is used notably to illuminate light spatial modulation screens with the 16/9 format in color image projectors. The aim is to improve the luminous efficiency. The disclosed generator device has a light source producing a primary beam and two wavelength selective mirrors. The two selective mirrors are illuminated by the primary beam and produce two secondary beams of different wavelengths. On the one hand, the two selective mirrors are placed side by side and intercept different parts of the section of the primary beam. On the other hand, a rear face that is at least partially reflective is positioned opposite the source with respect to the selective mirrors.
REFERENCES:
patent: 4850685 (1989-07-01), Kamakura et al.
patent: 4943154 (1990-07-01), Miyatake et al.
Patent Abstract of Japan, vol. 9, No. 174 (P-374) [1897], Jul. 19, 1985, & JP-A-0-49314, Mar. 18, 1985, T. Satomi, "Optical Path Dividing and Color Separating Device for Color Image Readout Optical System".
"Thomson-CSF"
Henry Jon W.
LandOfFree
Device for the generation of several beams of light including a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for the generation of several beams of light including a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for the generation of several beams of light including a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1973217