Power on/off system of thin projector and method for...

Details Power on/off system of thin projector and method for... Power on/off system of thin projector and method for...

2005-12-19

2008-10-28

Sever, Andrew T (Department: 2851)

Optics: image projectors

Temperature control

Blower

C353S121000, C353S119000, C348S748000

Reexamination Certificate

active

07441903

ABSTRACT:
A power on/off system of a thin projector including an optical system arranged in a housing with a panel shape having lateral sides and a front side having an area larger than an area of each lateral side is disclosed. The power on/off system includes a door, fans which cool a lamp, a shutter which opens/closes a projection lens, a first sensing unit which senses malfunctions of the lamp, the fans, the door, and the shutter, a second sensing unit which senses an internal temperature of the housing, and a controller which sequentially controls, in response to power-on of the thin projector, operations of opening the door and the shutter, driving the fans, driving the lamp, and sequentially controls, in response to power-off of the thin projector, operations of turning off the lamp, driving the fans, turning off the fans, and closing the door and shutter.

REFERENCES:
patent: 7086739 (2006-08-01), Kida et al.
patent: 7232225 (2007-06-01), Shiraishi
patent: 2005/0030493 (2005-02-01), Wu
patent: 2005/0068505 (2005-03-01), Momose et al.
patent: 2005/0151933 (2005-07-01), Tsai et al.
patent: 2000-305175 (2000-11-01), None
patent: 2001-242542 (2001-09-01), None
patent: 2003-043577 (2003-02-01), None
PCT Search Report dated May 26, 2006.

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