Illumination – Plural light sources – Particular wavelength
Reexamination Certificate
2005-07-19
2005-07-19
O'Shea, Sandra (Department: 2875)
Illumination
Plural light sources
Particular wavelength
C362S245000, C362S268000, C359S015000
Reexamination Certificate
active
06918682
ABSTRACT:
An illumination system capable of realizing a color image without a color wheel, and a projection system employing the illumination system. The illumination system includes first, second, and third light emitting devices and first and second hologram devices. The first, second, and third light emitting devices emit light beams having different wavelengths. The first and second hologram devices are disposed in an “X” configuration at an angle with respect to the first, second, and third light emitting devices and transmit or reflect incident light depending on the wavelength of the light. The projection system further includes a display device, and a projection lens unit. The display device processes beams incident in one direction via the first and second hologram devices, according to an input image signal, and forms an image. The projection lens unit enlarges and projects the image formed by the display device on a screen. The illumination system and the projection system can realize a wide color gamut. Thus, the illumination system and the projection system can provide a high-density and high-quality image, and can be compact by compressing the cross-sectional area of a beam.
REFERENCES:
patent: 4535394 (1985-08-01), Dugre
patent: 5404234 (1995-04-01), Taniguchi et al.
patent: 6115152 (2000-09-01), Popovich et al.
patent: 6547421 (2003-04-01), Sugano
patent: 2001-22667 (2001-03-01), None
Choi Soon-Cheoi
Kim Sung-ha
Sokolov Kirill Sergeevich
O'Shea Sandra
Samsung Electronics Co,. Ltd.
Staas & Halsey , LLP
Truong Bao Q.
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