Sensing pin, e.g. for laser diode feedback sensor

摘要

The sensing pin has a movable contact (5) and a fixed part (6). A laser negative feedback sensor consists of a laser, an external resonator mirror and a focussing lens. The laser (1) can be mounted on the fixed part and the focussing lens (2) on the movable part or vice-versa.The external resonator mirror (3) is rigidly attached to the lens or laser. The laser is a laser diode or an array of laser diodes. The fixed and movable parts are connected via a linear guide.