Projection display apparatus with capability of controlling...

Details Projection display apparatus with capability of controlling... Projection display apparatus with capability of controlling...

2006-08-08

2006-08-08

Koval, Melissa Jan (Department: 2851)

Optics: image projectors

Temperature control

C353S085000, C348S748000

Reexamination Certificate

active

07086739

ABSTRACT:
A time management section is configured to change an output voltage in accordance with a temperature change characteristic of a lamp allowed to cool down. For restart of the lamp after the turn-off of the lamp, the lamp is cooled by a fan before the operation of turning on the lamp when it is judged that the temperature of the lamp is higher than a predetermined value, based on the output voltage from the time management section. The lamp is immediately turned on without the cooling of the lamp by the fan when it is judged that the temperature of the lamp is lower than the predetermined value.

REFERENCES:
patent: 6419364 (2002-07-01), Takizawa et al.
patent: 6467911 (2002-10-01), Ueyama et al.
patent: 6776489 (2004-08-01), Suzuki
patent: 6860608 (2005-03-01), Kimura
patent: 2002/0163626 (2002-11-01), Takizawa et al.
patent: 0 425 989 (1991-05-01), None
patent: 4-53943 (1992-02-01), None
patent: 2903655 (1999-03-01), None

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