Illumination apparatus, display apparatus and projection...

Details Illumination apparatus, display apparatus and projection... Illumination apparatus, display apparatus and projection...

2008-05-09

2011-12-06

Ko, Tony (Department: 2878)

Optics: image projectors

Temperature control

C362S276000

Reexamination Certificate

active

08070296

ABSTRACT:
An illumination apparatus includes: a solid-state light source; a Peltier element configured to cool the solid-state light source; a light amount sensor configured to detect an amount of a light emitted from the solid-state light source; a power consumption monitor configured to monitor power consumptions of the solid-state light source and the Peltier element; and a power controller configured to control powers supplied to the solid-state light source and the Peltier element. The power controller controls the powers supplied to the solid-state light source and the Peltier element, on the basis of the light amount detected by the light amount sensor and a sum of the power consumptions of the solid-state light source and the Peltier element.

REFERENCES:
patent: 7055957 (2006-06-01), Troyer
patent: 7300155 (2007-11-01), Miyazawa et al.
patent: 2005/0200311 (2005-09-01), Youle
patent: 2005-149943 (2005-06-01), None

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