Browse Prior Art Database

Duplex Radiation Detector

IP.com Disclosure Number: IPCOM000102144D
Original Publication Date: 1990-Oct-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 1 page(s) / 35K

Publishing Venue

IBM

Related People

Rensch, WJ: AUTHOR

Abstract

Disclosed is a device for detecting the presence of infrared radiation emitted by fiber-optic transmitters that mate with duplex-type fiber-optic connectors.

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Duplex Radiation Detector

       Disclosed is a device for detecting the presence of
infrared radiation emitted by fiber-optic transmitters that mate with
duplex-type fiber-optic connectors.

      The infrared radiation emitted by a laser or LED is invisible
to the human eye.  A photo-sensitive material placed in the beam path
will illuminate, indicating that the source is active.  However, it
is not always possible to place a photo-sensitive card close to the
light source, and for safety reasons, some fiber-optic module designs
do not allow direct viewing of the light source.

      The body of the duplex radiation detector shown in the figure
mates with the fiber-optic module.  Holes in the back wall allow the
emitted radiation to strike the screen, which is coated with an
appropriate fluorescent material.  The resulting illumination is
readily seen, indicating that infrared radiation is present.

      The duplex radiation detector is less expensive and more
portable than an optical power meter.