Photoelectric touch panel having reflector and transparent photo

Details Photoelectric touch panel having reflector and transparent photo Photoelectric touch panel having reflector and transparent photo

1986-02-18

1988-04-12

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250227, 340365P, G01V 904, H04L 0000

Patent

active

047376260

ABSTRACT:
A photoelectric touch panel characterized in that one side is provided with a substrate having light emitting elements and light sensing elements mounted thereon and an opposing side of the touch panel has a multi-directional reflecting surface for collecting dispersed portions of the light emitted by the light emitting elements. The multi-directional reflecting surface is joined with a photo-conductive body which guides the collected light back to the light sensing elements at the first side of the touch panel.

REFERENCES:
patent: 3584226 (1971-06-01), Lerner
patent: 3764813 (1973-10-01), Clement et al.
patent: 3775560 (1973-11-01), Ebelling et al.
patent: 3860754 (1975-01-01), Johnson et al.
patent: 4517559 (1985-05-01), Deitch et al.
patent: 4563577 (1986-01-01), Schaller

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