PROJECTION DISPLAY APPARATUS

PROJECTION DISPLAY APPARATUS

In a projection display apparatus in which a laser beam source and an optical engine are connected together through an optical fiber, safety is improved against temperature rise in the optical fiber and its periphery. A projection display apparatus includes a temperature sensor 4 provided on the end...

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1. Verfasser: YAGYU SHINJI
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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description In a projection display apparatus in which a laser beam source and an optical engine are connected together through an optical fiber, safety is improved against temperature rise in the optical fiber and its periphery. A projection display apparatus includes a temperature sensor 4 provided on the end portion, of the side of an optical engine 6, of an optical fiber group 1 for connecting a laser beam source 5 and the optical engine 6 to each other, in which, by detecting temperature and informing to a controlling unit 71 for controlling the laser beam source 5, when temperature rise exceeding a set value having been set previously is detected, the controlling unit 71 is made to control so as to decrease or stop output from the laser beam source 5.
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subjects BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
title PROJECTION DISPLAY APPARATUS
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