| 摘要 |
PURPOSE:To provide a unit for turning the power supply to a goggle type display ON, OFF automatically by detecting use/nonuse thereof. CONSTITUTION:A lens system 4, a liquid crystal display 5, a back light 6, a reflective element 7, and a reflected light detecting section 10 comprising light emitting and receiving elements are arranged in front of a goggle frame 1. The reflected light detecting section 10 compares the intensity of light detected through the light receiving element with a previously registered intensity of light reflected from eyeball. When the amount of detected light is within a previously registered range, the detecting section 10 delivers a power ON signal to a power supply section 9. Since the amount of detected light deviates from the registered range when the display is not used except flickering of eyelid (shorter than 2sec), the detecting section 10 delivers a power OFF signal to the power supply section 9 upon elapse of 2sec. |
