| 摘要 |
PURPOSE:To obtain a joy stick with long life and high reliability by using a two-dimensional photodetecting sensor as a detecting body and detecting the inclination of a lever without contacting. CONSTITUTION:When a lever 11 is inclined, a light source 12 is interlocked and moved, and by a lens 13, the optical spot irradiates a part of the two-dimensional CCD sensor 14. On the other hand, by the control signal from a control circuit 19, scanning is executed in the X and Y detections of a sensor 14 is executed, and by the timing, the voltage is outputted in accordance with the accumulating charge of the cell of the sensor 14. The output is amplified to the voltage easy to be decided by a level deciding circuit 17 of the rear step by using an amplifying circuit 16. When the spot is converged to a part of the sensor 14, the output at that part is more different than the dark part in the level, and therefore, this is detected, and by comparison with the scanning signal timing in the X and Y directions, the position of the optical spot is calculated at an X and Y coordinate calculating circuit 18, and outputted to the upper order device as the vector indicating value designated by the inclination of the lever 11.
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