| 摘要 |
<p>PROBLEM TO BE SOLVED: To detect an inclination of an optical axis, to easily adjust the optical axis and to secure safety even if a large inclination and deviation of the optical axis occur. SOLUTION: An optical scanning-type touch panel is provided with a plurality of optical scanning units 11a which optically scan a recursive reflector 13 by light outputted from light emitting parts with the rotation of a scanning mirror and receive reflected light in light receiving parts. The optical scanning units are provided with optical axis adjusting jigs 15 having prescribed reflection patterns for detecting the inclination of the optical axis of light outputted from the light emitting parts in close positions in accordance with the start position and the end position of optical scanning, which are beyond the effective range of a scan area. The light emitting part is provided with an optical axis adjusting mechanism for adjusting the inclination of the optical axis of light outputted from the light emitting part. The light receiving part detects the prescribed reflection pattern of the optical axis adjusting jig and adjusts the optical axis adjusting mechanism so that a detected detection value becomes maximum.</p> |
