A New Sensor for Detecting the One Dimensional Incident Position and the Angle of a Light Spot Simultaneously.

概要

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In this paper, we propose a new sensor which detects an incident position and angle of a light spot simultaneously. The sensor consists of two sensor arrays, an incident position detection component, and an incident angle detection component. The sensor is operated by means of the three main steps. First, the sensor receives the light spot in the sensor array unit. Next, in the incident position detection component, it detects the sensor element that generates the peak value by comparing the outputs of the sensor elements with the standard voltage, and then calculates the actual peak position with the analog interpolation by the second-order polynomial. Finally, in the incident angle detection component, an incident angle is calculated with the position information of the positions of the two sensor arrays by the analog operation. It was verified that it was the accuracy of 1.89% in the incident position and 0.48 degrees in the incident angle with the experiment by trial sensor system based on this technique.
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