摘要：AbstractThis paper proposed a universal remote controller for social welfare using large area optical sensor. When one of the sensors is indicated with a laser pointer, a signal of remote control is transmitted. The optical sensor with large sensing area can be easily indicated. However, there is a problem that the cost is high to manufacture an optical sensor with large area. Therefore, an optical sensor with large area consisting of frosted glass is developed. By consisting of frosted glass and a small photodetector, the area of the optical sensor can be enlarged easily and the sensor is cheap.
