Illumination module for color display

Details Illumination module for color display Illumination module for color display

2007-07-03

2007-07-03

Harrington, Alicia M (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

C359S634000, C353S031000

Reexamination Certificate

active

10938121

ABSTRACT:
The invention relates to an illumination module for color display, preferably for use in data or video projectors as well as rear projection television sets, in which the light from at least three luminescent diodes (LEDs) or LED arrays of the base colors red, green and blue is collimated at a point provided for connection to a display unit and ranged on an optical axis of the illumination module. An LED or an LED array of a base color with a beam path (Lr) oriented in the direction of the display unit is arranged on the optical axis of the illumination module. For the purpose of color mixing, the LEDs and LED arrays of the other base colors are attached in such a way tat their beam paths (Lg, Lb) are laterally input in sequence under input angles (α, β) of <90 degrees into the beam path (Lr) of the first base color.

REFERENCES:
patent: 5777789 (1998-07-01), Chiu et al.
patent: 2005/0254018 (2005-11-01), Magarill et al.
patent: 199 25 318 (2001-02-01), None
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patent: WO 00/58772 (2000-10-01), None
patent: WO 00/74390 (2000-12-01), None

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