Barrier mountable optically coupled isolator housing and assembl

Details Barrier mountable optically coupled isolator housing and assembl Barrier mountable optically coupled isolator housing and assembl

1997-12-29

1999-11-23

Le, Que T.

Radiant energy

Photocells; circuits and apparatus

Housings

250551, 257 82, H01J 502

Patent

active

059904755

ABSTRACT:
A housing for an optically coupled isolator is mountable through an aperture of an electromagnetic barrier. The housing includes a first recess in a first end for receiving an insulator and an optical driver device and a second recess in a second end for receiving an insulator and an optical detector device. A bore extends through the portion of the housing between the first and second recesses. Preferably, the bore has a length on the order of five times greater than its diameter which imparts waveguide characteristics for attenuating certain electromagnetic radiation. An outwardly extending flange of the housing has a groove in which a gasket is disposed. Preferably, the gasket is comprised of an electrically conductive material. In use, the gasket is compressed against the electromagnetic barrier and maintains electrical continuity across the barrier.

REFERENCES:
patent: 4456828 (1984-06-01), Mason et al.
patent: 5396062 (1995-03-01), Eisentraut et al.
patent: 5570204 (1996-10-01), Kumashiro

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