Fiber optic photoelectric sensor with liquid removing means

Details Fiber optic photoelectric sensor with liquid removing means Fiber optic photoelectric sensor with liquid removing means

1987-10-22

1988-12-20

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250227, G01N 1506

Patent

active

047926996

ABSTRACT:
A liquid removing attachment (22,24) for a fiber optic photoelectric sensor (14) that is used in a wet environment such as near a workpiece or tool (20) that is being sprayed or flowed with a liquid coolant. Such coolant produces an ambient mist or splash of liquid at the adjacent end of the fiber optic cable (16,18) which condenses or accumulates as a liquid mass or drops (6) on the exposed end of the optical fiber bundle (7) tending to interfere with light transmission therethrough. The attachment (22,24) provides radial channels (8b-e) adjacent the exposed ends of the optical fibers (7) that through adhesion of the liquid thereto together with the force of gravity cause such liquid mass or drops (6) to flow away thereby to reduce the liquid accumulation in the light transmission path.

REFERENCES:
patent: 4505539 (1985-03-01), Auracher et al.
patent: 4606226 (1986-08-01), Krohn

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