Optical coordinate position input device
US4742221A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1986 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | May 19, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/301
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical coordinate input device comprises a number of light emitting elements and corresponding light detecting elements disposed in a plurality of linear arrays. A light ray selection member is provided such that only the light rays from the light emitting elements are detected by the light detecting elements. The light ray selection member is an optical semiconductor element light obstructing holder. The optical semiconductor elements have terminals projecting from the bottom surface of their main body which are fixed to a base and have a light emitting function or light detection function. In addition to these, a pair of mold bodies extending in the array direction of the optical semiconductor elements is combined, and this array of elements can be integrally fitted therein while being provided with a pressure portion elestically contacting the bottom surface of the main body of each element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.