Method of calibrating monochromatic light beams outputted by...

Details Method of calibrating monochromatic light beams outputted by... Method of calibrating monochromatic light beams outputted by...

2007-07-10

2009-12-29

Philogene, Haissa (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S307000, C315S149000, C315S312000, C356S228000, C356S229000, C356S222000

Reexamination Certificate

active

07638956

ABSTRACT:
To control chroma and brightness in a backlight module, a plurality of reference values of a plurality of monochromatic light beams are provided, and a brightness reference value is provided for the light formed of the monochromatic light beams. Then, a plurality of first light signals of the monochromatic light beams, and a second light signal of the light formed of the monochromatic light beams are sensed and compared with the reference values and the brightness reference value, respectively. Finally, the monochromatic light beams outputted by the plurality of LEDs is calibrated according to a comparison result of the plurality of first light signals with the plurality of reference values and a comparison result of the second light signal with the brightness reference value.

REFERENCES:
patent: 6411046 (2002-06-01), Muthu
patent: 6507159 (2003-01-01), Muthu
patent: 6596977 (2003-07-01), Muthu
patent: 6630801 (2003-10-01), Schuurmans
patent: 7388665 (2008-06-01), Ashdown
patent: 7560677 (2009-07-01), Lyons et al.

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