Hamamatsu Photonics 位置敏感測器( PSD),是利用光電二極體表面電阻而成的光電位置感測器。
Hamamatsu Photonics Position sensitive detectors (PSD) are optoelectronic position sensors utilizing photodiode surface resistance. Unlike discrete element detectors such as CCD, PSD provides continuous position data (X or Y coordinate data) and features high position resolution and high-speed response.