LASER PROJECTION DISPLAY DEVICE

LASER PROJECTION DISPLAY DEVICE

The laser projection display device includes a scanning mirror reflecting and two-dimensionally scanning a laser beam emitted from a laser light source and sensors detecting rotation angles of the scanning mirror, and controls driving of the scanning mirror on the basis of sensor signals output from...

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Hauptverfasser: NAKAJIMA, Junji, AONO, Takanori, KOBORI, Tomoki, KIMURA, Katsuhiko, YAMASAKI, Tatsuya
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
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creator NAKAJIMA, Junji
AONO, Takanori
KOBORI, Tomoki
KIMURA, Katsuhiko
YAMASAKI, Tatsuya
description The laser projection display device includes a scanning mirror reflecting and two-dimensionally scanning a laser beam emitted from a laser light source and sensors detecting rotation angles of the scanning mirror, and controls driving of the scanning mirror on the basis of sensor signals output from the sensors. At this time, a temperature compensation unit compensates for temperature dependency of a transfer characteristic of a signal transmission line for transmitting the sensor signals according to a temperature measured by a thermometer arranged in the vicinity of the scanning mirror. In order to correct amplitudes and phases of the rotation angles of the scanning mirror obtained from the sensor signal, the temperature compensation unit includes a look-up table storing correction amounts for each temperature.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
title LASER PROJECTION DISPLAY DEVICE
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