> When selecting IR LEDs, pay attention to the divergence (beam
> angle).  Get something that will match your lens's viewing
> angle.  One configuration I have used is a "halo" of LEDs
> arranged in a ring around the lens of the camera.  Edmund
> Scientific and a few others also sell some LARGE infrared
> sources that might be appropriate.
> <<
>
> Why not use an ordinary LEB (light emitting bulb).  These things are
> actually quite efficient and reliable at above-visible wavelengths.  Start
> with an ordinary bulb and lower the voltage just below where you can't see
> the filament lit anymore.

        That is a REALLY good idea, never even considered it. Plus, with such a low
voltage across the bulb it will probably last as long as an LED! TTYL

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