| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the increase of cost even if the title detector is made a large in size, and further to prevent the increase in complexity of the detector. SOLUTION: Light scanners 3 and 4 inject luminous fluxes 101A and 102A with each installation location as a center, performing rotations. Corner cube arrays 2A to 2C fold the luminous fluxes 101A and 102A toward the light scanners 3 and 4. The light scanners 3 and 4 receive reflected light 101B and 102B. When a touch panel 1 is touched in this state, the luminous fluxes from the light scanners 3 and 4 are shielded at a contact point. The light scanners 3 and 4 detect the angles of the injected luminous fluxes 101A and 102A for a straight line part 1A. An arithmetic circuit 5 calculates the coordinate of the light shielding point of the luminous fluxes from each angle detected by the light scanners 3 and 4.</p> |
