[photo-3d] JKL CCFL is okey dokey for viewers

[ers <ers@xxxxxxxxxxxx>]

I heard back from the JKL engineering department re the CCFL lamps. Turns out 
you don't even need to use a UV filter, but somehow, I like it there anyway. 
The following is a cut and paste from the JKL engineering tech person:

-----------------------------------------------------

The spectral output for the lamp you plan to use in a slide viewer has no 
emmissions below 380 nm. The glass used to manufacture the lamp blocks all of 
the UV.

The lamp has never been tested for X-ray emission. But since it is a low 
pressure mercury lamp and not a vacuum lamp we do not believe any X-rays are 
generated. This lamp is the same type of lamp that is used in every laptop 
computer produced, and they all have no X-ray emissions. This is not the same 
technology used to manufacture Geissler tubes, which do produce X-rays.

-----------------------------------------------------

I've been thinking about doing a short run of CCFL illumination stages for use 
on the Combi and the large format viewers, similar to the one I already built, 
and based on the digikey product, plus an inverter, and a Wal-mart plastic 
mirror reflector to even the illumination. I've never been very happy with the 
fluorescent illumination in my King's Inn... Using an angled mirror, it's 
possible to get bright, even illumination, and the CCFL tubes run very cool, 
as well as being excellent re battery life.

--Elliott