PROJECTOR, HEAD-UP DISPLAY DEVICE, AND CONTROL METHOD OF PROJECTOR

摘要

A projector that includes a plurality of laser light sources that emit laser lights of mutually differing colors, a combiner that combines the laser lights, a laser light scanner that projects an image onto a projection surface by scanning the laser lights combined by the combiner, a laser light detection unit, and a controller. The laser light detection unit further includes a first laser light detector and a second laser light detector. The controller calculates an amount of change in an optical axis of the laser lights based on a displacement of the irradiation position of the first diffracted light, calculates an amount of change in a wavelength of the laser lights based on the amount of change in the optical axis and a displacement of the irradiation position of the second diffracted light, and adjust an output ratio.

主权项

1. A projector, comprising:
a plurality of laser light sources that emit laser lights of mutually differing colors; a combiner that combines the laser lights; a laser light scanner that projects an image onto a projection surface by scanning the laser lights combined by the combiner; a laser light detection unit comprising:
a first laser light detector that detects an irradiation position of a first diffracted light of the laser lights emitted by the plurality of laser light sources; anda second laser light detector that detects an irradiation position of a second diffracted light of the laser lights; and a controller that:
calculates an amount of change in an optical axis of the laser lights based on a displacement of the irradiation position of the first diffracted light,calculates an amount of change in a wavelength of the laser lights based on the amount of change in the optical axis and a displacement of the irradiation position of the second diffracted light, andadjusts an output ratio for the plurality of laser light sources according to the amount of change in the wavelength of the laser lights.