SUNRAY TRACKING EQUIPMENT

摘要

PURPOSE:To simplify the constitution and to attain the high accuracy by arranging plural pairs of photodetection means to detect a tracking error around the circular part to collect the sunray. CONSTITUTION:An infrared ray of the sunray is cut off by a filter 12 fitted to the front face of a light collection casing 10, the result is collected by a Fresnel lens 14 and made incident in an end face 24 of an optical fiber cable 20. Each one end of four optical fibers 30a-30d is arranged at an equal interval around the incident end face 24 of the optical fiber cable 20. Thus, the optical fibers 30a and 30c are opposed to each other and the optical fibers 30b and 30d are opposed to each other. The other ends of the optical fibers 30a-30d are connected to photodetectors 32a-32d of photodiodes or the like to detect the deviation of light correction around the incident and face 24 of the optical fiber cable 24.