| 摘要 |
<p>PURPOSE:To realize the input and operation of the information on the 3-dimensional direction by setting a specific space as an input field for information. CONSTITUTION:An optical filter applying a lens 2 and a shielding plate 3 is set at a light receiving part as a directivity specifying filter. Thus the parallel beams are condensed to the part 1 via the lens 2 and the plate 3. Then the part 1 is set at axes X, Y and Z respectively and the moving light of a light emitting part is detected in these fields where the part 1 is set. Thus the 3-dimensional position coordinates are decided. In such a case, it is desirable for the light emitting part to emit beams in all directions. Furthermore a pulse light emitting circuit is used to a light emitting circuit to improve the distance characteristics.</p> |
