PROJECTION DEVICE AND HEAD-UP DISPLAY DEVICE

摘要

A projection device includes a laser light generator that outputs a laser light based on input image signals, a projector that comprises a scanner that scans the laser light irradiated from the laser light generator and projects an image on a projection area, a neutral density filter that coarsely adjusts brightness of the projected image by incrementally changing transmittance of the laser light irradiated from the laser light generator, and a laser output controller that finely adjusts brightness of the projected image by changing light intensity of the laser light by performing output adjustment of the laser light irradiated from the laser light generator.

主权项

1. A projection device, comprising:
a laser light generator that outputs a laser light based on input image signals; a projector comprising a scanner that scans the laser light irradiated from the laser light generator and projects an image on a projection area; a neutral density filter that coarsely adjusts brightness of the projected image by incrementally changing transmittance of the laser light irradiated from the laser light generator; and a laser output controller that finely adjusts the brightness of the projected image by changing light intensity of the laser light by performing output adjustment of the laser light irradiated from the laser light generator.