| 摘要 |
This optical apparatus (100) has pixels, the reflectance or transmittance of the pixels changing according to the magnitude of voltage applied to the pixels. The voltage-reflectance characteristics or voltage-transmittance characteristics of the pixels have hysteresis, such that the threshold voltage on a rising voltage curve that represents the voltage-reflectance characteristics or the voltage-transmittance characteristics when the applied voltage is increasing is higher than the threshold voltage on a falling voltage curve that represents the voltage-reflectance characteristics or the voltage-transmittance characteristics when the applied voltage is decreasing. The pixels lack memory in a state in which the applied voltage is zero, and the value of reflectance or transmittance on the rising voltage curve when the applied voltage is increased from zero is determined by a substantially one-to-one relationship to the voltage value. The write voltage, which is the applied voltage to the pixels when writing data, is set on the basis of the rising voltage curve. |
