Hi,

Many years back at another company I used a product similar to what you are
describing.

It is made by Southwall Technologies. The link is:

http://www.southwall.com/products/display/shielding.html#altair

This material is 10 to 20 Ohms/Square and they used to have other versions
that were more light transmissive at a cost of higher resistance. We used to
have it laminated to a Plexiglass sheet using optical cement and the
grounded it in the application. They make coatings for Plasma Display Tubes
(commercial big screen TV applications) too. They may even be able to make
something special for you.

There is always a light transmissibility cost with any optical EMC
application. Source suppression may actually be an easier way to meet
overall specifications instead of containment. A lot of times that is not
possible. I don't know what the laser will do with a conductive coating, it
may reflect some of the energy so be careful. There will also be a color
change with any conductive coating in the camera application, reflections
may also be a problem.

Good luck to you,

Philip Ross Wellington
Mgr. Signal Integrity & EMI
L-3 Communications CSW


-----Original Message-----
From: [email protected]
[mailto:[email protected]]
Sent: Wednesday, August 14, 2002 3:03 AM
To: [email protected]
Subject: EMI Coatings for Windows



Can any one help?

Have been asked to find an EMC Coating that can be used on a window. 
Window being used for Low Light Camera, Colour Camera and 1.54micron Laser. 
Coatings considered so far cause problems with attenuation of the Laser.

Companies approached so far Chomerics and Pilkingtons.

Anybody covered this ground previously? 

Regards
Andy

Andrew Price
Principal Development Engineer (EMC Specialist)
BAE SYSTEMS Avionics
A125
Christopher Martin Road
Basildon, Essex
SS14 3EL

tel:   +44 (0) 1268 883308
email: [email protected]
 


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