| 摘要 |
<p>PURPOSE:To reduce the demand for the precision of the lens of a light emitting element itself and reduce the time and trouble due to the selection of the light emitting element and to improve the productivity and reduce the cost by providing a light emitting element array with the light emitting elements and optical distributor. CONSTITUTION:The optical distributor 12 which has a previously provided total reflecting surface 22 and a half-reflecting surface 23 is arranged as the light emitting element array. Namely, the optical touch panel 10 which has optical distributors 21 is constituted by providing the light emitting element array with the light emitting elements and the optical distributor 21 having a means which distributes the light beam output projected by the light emitting elements into plural light beam outputs and projects them on a light receiving element array 12. Therefore, the light beam input of one place which is made incident from the end surface of the optical distributor 21 is distributed as plural light beam outputs by the total reflecting surface 22 and half-reflecting surface of the optical distributor 21 and they reach the light receiving elements 12a with precision. Consequently, the need for the demand for the precision of the lenses of the light emitting elements themselves and the long time and trouble due to the selection of the light emitting elements is eliminated to improve the productivity and reduce the cost.</p> |
