Haiou Optoelectronics Technology Co., Ltd. (http://www.e-otron.com) professionals provide a full range of foreign four-quadrant detector (PIN four-quadrant, InGaAs quadrant and APD quadrant detector), have a different area of ??light, built-in amplifier and resolution of optional, high response dynamic range, good reliability, wide temperature range. Response wavelength ultraviolet light, visible light (sunlight, natural light), 650nm laser, infrared light, YAG 1064nm and 1310nm, 1550nm, etc., and with a processing circuit board (integrated anti-aggravation of the nonlinear error is small, GAP accuracy optional direct output X, Y position signal). To provide comprehensive technical support, a variety of different package, excellent cost-effective, long-term stock, typical model QP1-6, QP2-6, QP10-6, QP20-6, QP50-6, QP100-6, we also provide high-precision four-quadrant system can be connected directly to the computer with the display software can live demonstration of the track location and the location coordinates of the laser spot and the measurement process, please contact us. 021-54971821