| 摘要 |
PURPOSE:To allow a device to be viewed for a long time by controlling an optical system adjusting an optical distance between a screen on which a video is displayed and eyes of an viewer based on the distance between the screen and the eyes of the viewer. CONSTITUTION:An eyeglass stereoscopic presentation device 6 is provided with an optical system 64 adjusting the optical distance between a screen 62 and eyes of a viewer 2 and the optical system 64 is controlled, that is, driven by an actuator. Furthermore, the eyeglass stereoscopic presentation device 6 is provide with an eye state detector 66 detecting the state of the eyes of the viewer 2, that is, a congestion angle or an adjustment quantity and the eye state detector 66 includes a light emitting section and a light receiving section. Then a computer 70 calculates the optical distance between the screen 62 and the eyes of the viewer 2 based on the state of eyes detected by the detector 66 and transduces the optical distance into the adjustment quantity of the optical system 64 and the actuator moves the optical system by the adjustment quantity outputted from the computer 70. |
