Method for color transition for general illumination system

Details Method for color transition for general illumination system Method for color transition for general illumination system

2011-08-23

2011-08-23

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S150000, C315S169300

Reexamination Certificate

active

08004209

ABSTRACT:
The invention relates to a method of controlling a temporal variation of light emitted by an illumination system. The light emitted by the illumination system varies from light having a start color point (14) to light having a target color point (12). The start and target color point are defined in a first color space (XYZ, RGBvid, RGBill), which is perceptually non-uniform. The method according to the invention converts the start and target color point from the first color space to a second color space (Lab, Lch), which is more uniform to the human visual system than the first color space. The method further comprises a step of generating an intermediate color point (34, I1, I2) located on a transition-path (p, p′) within the second color space, an intermediate distance (d) between the start color point in the second color space and the intermediate color point in the second color space not being larger than a threshold distance (26). The method further comprises converting the intermediate color point from the second color space back to the first color space, and subsequently altering the light emitted by the illumination system (65) from the start color point to the intermediate color point. The invention further relates to an illumination system and a display device.

REFERENCES:
patent: 5650942 (1997-07-01), Granger
patent: 6788812 (2004-09-01), Wilkins
patent: 7772788 (2010-08-01), Park et al.
patent: 2006/0098077 (2006-05-01), Dowling
patent: 2008/0203943 (2008-08-01), Baaijens et al.
patent: 2009/0174332 (2009-07-01), Sejkora
patent: 0696865 (1996-02-01), None
patent: 2005069638 (2005-07-01), None
patent: 2006003624 (2006-01-01), None

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