Fiber optic controller with an interface having an emitting diod

Details Fiber optic controller with an interface having an emitting diod Fiber optic controller with an interface having an emitting diod

1993-01-21

1995-04-25

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250229, 341 31, H01J 516

Patent

active

054101506

ABSTRACT:
A fiber optic controller comprises a keyboard having a plurality of keys. Each key has a transmitting fiber and a receiving fiber wired therein. Light is provided to the transmitting fiber by a light emitting diode and travels to the key and, thence, to the receiving fiber by way of a reflective surface on the key which reflects the light when the key is in a depressed or "on" position. An electronic controller is controlled by signals from photo transistors which signals are initiated when light is transmitted by the receiving fiber to the photo transistor. The electronic controller, in turn, activates a power circuit which powers various of the operating components of a spa or hot tub.

REFERENCES:
patent: 1957585 (1934-05-01), Gratian
patent: 3340401 (1967-09-01), Young
patent: 3937952 (1976-02-01), Ripley et al.
patent: 3951168 (1976-04-01), Roberts
patent: 4681255 (1987-07-01), Drost
patent: 4814600 (1989-03-01), Bergstrom
patent: 4854498 (1989-08-01), Stayton
patent: 4935621 (1990-06-01), Pikulski
patent: 5020567 (1991-06-01), Proulx
patent: 5046806 (1991-09-01), Kidder et al.
patent: 5090791 (1992-02-01), Kidder et al.

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