Filter for photoelectric touch panel including light scattering

Details Filter for photoelectric touch panel including light scattering Filter for photoelectric touch panel including light scattering

1986-04-18

1988-04-12

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2502221, G01V 904

Patent

active

047376341

ABSTRACT:
A filter for a photoelectric touch panel disposed in front of arrays, formed on a framework on the circumference of a screen, of aligned light emitting elements and photosensitive elements characterized in that the same is provided with protrusions around the center of its portions in front of these arrays.

REFERENCES:
patent: 3478220 (1969-11-01), Milroy
patent: 3764813 (1973-10-01), Clement et al.
patent: 3775560 (1973-11-01), Ebeting et al.
patent: 4590410 (1986-05-01), Jonsson

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