| 摘要 |
In order to enable a display image with stable display colors and display brightness to be obtained quickly even when the optical intensity characteristic of a laser light source changes due to a harsh usage environment, a Dimmer unit (20) is equipped with: a first light detection unit (40) that modulates the light intensity (L) of composite laser light (C) emitted from a composite laser light emission unit (10), and detects the light intensity (L) of the composite laser light (C) before entering the Dimmer unit (20); and a second light detection unit (41) that detects the light intensity (L) of the composite laser light (C) after entering the Dimmer unit (20). The light intensity characteristic for each color in the composite laser light emission unit (10) is calculated on the basis of the light intensity (L) detected by the first light detection unit (40), and the white balance of each color in the composite laser light emission unit (10) is adjusted on the basis of the light intensity (L) detected by the second light detection unit (41). |
