Remote control light transmitter employing a cylindrical lens

Details Remote control light transmitter employing a cylindrical lens Remote control light transmitter employing a cylindrical lens

1975-10-28

1977-02-22

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Solid state light source

313512, 350190, 357 17, H01L 900

Patent

active

040093948

ABSTRACT:
A light transmitter for use in a light activated T.V. remote control system. A modified cylindrical lens having a wide horizontal dispersion angle and a reduced vertical dispersion angle is directly coupled to a light emitting diode. The resulting combination provides a controlled light dispersion suitable for transmitting to a distant receiver location.

REFERENCES:
patent: 3396344 (1968-08-01), Broom
patent: 3593055 (1971-07-01), Geusic et al.
patent: 3694902 (1972-10-01), Apgar et al.
patent: 3756688 (1973-09-01), Hudson et al.
patent: 3760237 (1973-09-01), Jaffe
patent: 3875456 (1975-04-01), Kano et al.

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