Browse Prior Art Database

Laser Safety Interlock for Transmitter-Receiver Shell

IP.com Disclosure Number: IPCOM000103436D
Original Publication Date: 1990-Nov-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 1 page(s) / 37K

Publishing Venue

IBM

Related People

Barthel, GM: AUTHOR

Abstract

Disclosed is a device for preventing accidental eye contact with the laser beam when a fiber-optic cable connector is removed from the transmitter-receiver shell (TRS).

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Laser Safety Interlock for Transmitter-Receiver Shell

      Disclosed is a device for preventing accidental eye contact
with the laser beam when a fiber-optic cable connector is removed
from the transmitter-receiver shell (TRS).

      In one embodiment (Figs. 1-2), a TRS 1 having an attached
transmitter 2 and receiver 3 is equipped with a shutter 4 actuated by
a spring 5.  Shutter 4 is normally in position A when the fiber-optic
cable connector (not shown) is in place.  When the cable connector is
removed, the spring 5 rotates the shutter 4 down to position B,
shielding the observer from the laser beam from the transmitter 2.

      An alternative embodiment 1' is shown in Figs. 3-4.  In this
embodiment two curved leaf-spring shutters 6 and 7 provide additional
safety, with the second shutter acting as a backup in case on of them
should fail.  The shutters are normally in a straightened, compressed
state when the cable connector is engaged.  When the cable connector
is removed, the shutters relax into a curved shape, blocking the
laser beam from the observer.

      Disclosed anonymously.