| 摘要 |
PURPOSE: A sunglass is provided to offer stability for being worn by setting a critical value for securing a minimum front sight and controlling the transmittance of a lens. CONSTITUTION: An illumination detector(130) senses the quantity of light which comes into a right liquid crystal lens(110) and a left liquid crystal lens(120). The illumination detector generates the sensing signal of a light quantity. An oscillation circuit(210) generates the oscillation signal of a specific frequency. A controller(220) uses the oscillation signal and the sensing signal of the light quantity. The controller controls the turn-on and turn-off operation of the right liquid crystal lens and the left liquid crystal lens.
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