Projector having cooling device for cooling target object...

Details Projector having cooling device for cooling target object... Projector having cooling device for cooling target object...

2011-07-05

2011-07-05

Luu, Thanh X (Department: 2878)

Optics: image projectors

Temperature control

C353S057000

Reexamination Certificate

active

07972012

ABSTRACT:
A projector includes a cooling device for performing cooling of a target object housed inside a housing, a first temperature sensor disposed in an anterior stage of the target object on a cooling path formed by the cooling device inside the housing, and for measuring a first detection temperature in an anterior area of the cooling among peripheral areas of the target object, a second temperature sensor disposed in a posterior stage of the target object on the cooling path, and for measuring a second detection temperature in a posterior area of the cooling among the peripheral areas, and a control device for performing calculation regarding the temperature of the target object from the first detection temperature and the second detection temperature, and controlling the cooling device based on the result of the calculation.

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