| 摘要 |
<p>PURPOSE: An optical touch panel is provided to obtain a natural input click. CONSTITUTION: The refractive index of the light emitting side clad layer is lower than the refractive index of the light emitting side core(17). The refractive index of the light receiving side clad layer is lower than the refractive index of the light receiving side core(19). The height of the center of the light emitting side optical waveguide(14) is lower than the center of the light emitting side core. The height of the center of the light receiving side optical waveguide(15) is lower than the center of the light receiving side core. A signal generating apparatus(20) generates a signal giving the input operation feeling by detecting the received signal in the light receiving element.</p> |
