| 摘要 |
PURPOSE:To prevent a driver from feeling the languor by keeping unchanged a coefficient of reflection of a mirror even in case of receiving an intermittent light while traveling along a letter S-like curve. CONSTITUTION:A liquid crystal type dazzle preventive mirror is operated on the basis of signals from the first light detection part 3, which receives and detects an irradiating light from the rear of a vehicle, and also from the second light detection part 2, which receives and detects lightness of the surroundings. When lightness of the surroundings is light enough, liquid crystal LCD comes to have high coefficient of reflection, and also when the surroundings are dark enough and a bright light is not irradiated from the rear, the liquid crystal LCD comes to have high coefficient of reflection. On the the other hand, when the surroundings are dark enough and the bright light is irradiated from the rear continuously for more than a certain time, the liquid crystal LCD comes to have low coefficient of reflection, while it comes to have high coefficient again when the surroundings become continuously dark for more than a certain time after shielding the light. |
