Wee Mei,
(1) UV 365 nm is commonly used for FL excitation.  Normally, you wear the
protective eye glass that cut off the excitation light, therefore, you can
see only the FL light.  All the FL microscope got split prism to filter out
the excitation, and use cut-off/cut-on filters to allow you see the
particular wave length of FL light (check bio-medical stuff... they use 400
nm instead to prevent the UV damage of the cell structure).
(2) You should not inspect anything without glasses.  Most of the glasses
nowadays use polymer lens, it normally cut-off <400 nm anyhow.  Even it is
not coloured (like the orange one usually supplied by the UV maker).  I wear
sun-glasses (light shade) to do some UV work in the past.  Works better than
the orange one... (for me, I do not know what is the FL spectrum of the
stuff, I need to see everything >410 nm)...
Good luck.
                                                   jk

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Wee Mei
Sent: Wednesday, April 26, 2006 10:03 PM
To: [log in to unmask]
Subject: [TN] UV Light cause eye cancer

Morning,

I just learned from TV news in Singapore that the eye doctors are seeing an
increase in eye cancer due to UV from sunlight. The symptoms of dry eyes,
red vessels and small lump on the eye ball described by the eye doctors on
TV are what I have experience recently.

I got worry as I have been inspecting conformal coating using UV lamp daily
between 15 min to 2 hours at a stretch. As for my colleague who manual coat
the boards, he can easily spent 4 - 5hours daily at such work. Can someone
provide some adivise on the effect.

We are using Long awve UV 365nm. The UV lamp is from Spectronics Corp code
BLE-760B.

Thanks in advance.

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Wee Mei

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