Data communications and illuminated light on the same optical fi

Details Data communications and illuminated light on the same optical fi Data communications and illuminated light on the same optical fi

1994-11-30

1997-02-11

Chin, Wellington

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359159, 359172, 34082572, H04B 1012, H04B 1000

Patent

active

056026684

ABSTRACT:
An a) infrared data signal and a b) visible light signal including infrared shot noise are provided to opposite sides of a cold bandpass mirror for transmitting the infrared data signal into a light pipe and for reflecting the visible light signal into the light pipe and for transmitting the infrared shot noise through the cold bandpass mirror and away from the light pipe. Further, a first lens is situated between a) a source of the infrared data signal and b) the cold bandpass mirror, for focusing the infrared data signal onto the cold bandpass mirror to prevent its diffusion. And further, a second lens is situated between the cold bandpass mirror and the light pipe for focusing the infrared data signal and visible light into the light pipe. And further, a third lens situated between the a) source of the infrared shot noise and visible light and b) the cold bandpass mirror, for focusing the visible light signal and infrared shot noise onto the cold bandpass mirror. Further, two separate optical data sources (FIG. 4) provide two distinct optical data signals (FIG. 4) through the optical fiber, or light pipe. Further, one or more optical data signals--infrared or otherwise--are received at mobile or immobile IR data I/O ports (FIG. 7,8).

REFERENCES:
patent: 4297000 (1981-10-01), Fries
patent: 4824201 (1989-04-01), Kazovsky
patent: 5265732 (1993-11-01), Long

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