Optical coordinate position input device

Details Optical coordinate position input device Optical coordinate position input device

1986-05-19

1988-05-03

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2502221, G01V 904

Patent

active

047422211

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.

REFERENCES:
patent: 3764813 (1973-10-01), Clement et al.
patent: 4570076 (1986-02-01), Hamano et al.
patent: 4571498 (1986-02-01), Hagan et al.

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