| 摘要 |
Provided is a scanning-type projection device for stably displaying a low-luminance display image and displaying a display image having no unevenness of spectrum or luminance. A scanning-type projection device (100) is provided with an emitted-light-intensity control unit (20) for controlling the light intensity of a laser light (L) emitted by a laser light source unit (10), a polarization direction control unit (25) for controlling the polarization direction of the laser light (L), a scanning unit (30) for scanning the laser light (L) and generating a display image, and a divergence unit (50) on which the laser light scanned by the scanning unit (30) is incident. The emitted-light-intensity control unit (20) has a polarization control element (21) for controlling the polarization state of the laser light (L), and a polarizing plate (22) on which the laser light (L) emitted from the polarization control element is incident, and the polarization direction control unit (25) adjusts the polarization direction of display light incident on a projection surface by controlling the polarization direction of the laser light (L) emitted by the emitted-light-intensity control unit (20). |
