| 摘要 |
PROBLEM TO BE SOLVED: To provide a video display device that has the extended life of a laser light source.SOLUTION: A video display device 101 is a device that allows an observer ST to observe a video VM of display images, and includes a laser light source LD that emits laser beams Lc, a laser light source driving unit 14 that supplies power to the laser light source LD, light control means M15 for controlling the intensity of the laser beams Lc, and an image creating unit 11 that creates desired display images from the laser beams Lc, where the light control means M15 includes a light intensity detection unit 35 that detects the intensity of light, a control unit 55 that controls the output of the laser light source driving unit 14 on the basis of a result of the detection by the light intensity detection unit 35, and a current value detection unit 75 that detects the current value output from the laser light source driving unit 14; when the current value output from the laser light source driving unit 14 becomes larger than a predetermined limit current value stored in advance in a current storage unit K5, the control unit 55 outputs a current equal to or smaller than the limit current value to control the current value. |
