Optical communications link

Details Optical communications link Optical communications link

1975-03-12

1977-10-18

Griffin, Robert L.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

332 751, 358143, H04B 900, H04N 704

Patent

active

040547949

ABSTRACT:
The specification discloses a wireless optical communications link which includes a transmitter housing having circuitry for receiving electrical audio and video signals. A light emitting diode is mounted in the transmitter housing for generating a directional beam of light. Circuitry modulates the beam of light in accordance with the audio and video signals. A receiver housing is adapted to be located remote from the transmitter housing and includes an aspheric Fresnel lens for receiving and focusing the beam of light. A photodiode is mounted in the receiver housing for generating electrical output signals in response to the received beam of light. Circuitry is responsive to the electrical output signals for reconstructing the audio and video signals at the remote location.

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"Closed Circuit Television Systems-Color and Monochrome"--R.C.A. Service Company, pp. 207-210, copyright 1958.
Simplified Modern Filter Design -- Philip R. Geffe, 1963, pp. 1, 2, 6-11, 123.

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