工作原理:利用光敏元件将光信号转换为电信号 Working principle: Utilizes photosensitive elements to convert optical signals into electrical signals.
光电效应:光照下,半导体内部产生电子-空穴对,从而产生电压。Photoelectric effect: Under light exposure, electron-hole pairs are generated within the semiconductor, thereby producing a voltage.
逆光电效应:在半导体两端施加电压,电子和空穴复合产生光子。 Inverse photoelectric effect: When a voltage is applied across a semiconductor, electrons and holes recombine to generate photons.
应用:灯光亮度自动控制器、光电池测速装置Applications: Automatic light brightness controllers, photovoltaic cell speed measurement devices.