AB UV Glo Lite, built by AB of Candlepower Forums
Last updated 11-18-06

The AB UV Glo Lite is a near-UV light that features a custom-ground LED to work with the reflector, and another, dimmer near-UV LED that makes the Glo Lite glow just above the switch. A miniature DC-DC inverter is built into the reflector/lampholder assembly, so the LED glows brightly even with just the two AA cells the light comes with.

The entire unit is built into a Garrity Glo Lite body, and looks just like one until you turn it on. Because this light uses a near-UV (NUV) LED, you should try not to shoot it into your eyes, or into the eyes of anyone else nearby. You only come with one pair of them, and it's not like you can just bop on down to the local 7-11 for a new set when you burn out the first pair.


The light comes almost ready to use: you just need to pop in the two included AA cells (see below) and you're good to go.

To turn the light on, slide the switch on the barrel forward (towards the head). Slide it back (towards the rear) to shut it off.

A second NUV LED is hidden away inside, to charge up the glow material near the switch, so when you turn the light off and set it down, a green glowing spot should be visible on the head (near the switch in my unit). Every time you use the light, you charge up this area so the green glowing spot is refreshed.

To change the batteries, just unscrew the head until it comes off. Set it aside. Dump the two dead AA cells into whatever container you see fit to dispose of them in. Drop two new AA cells into the flashlight barrel, button (+) side facing up. Screw the head back on, and be done with it.

I don't have the battery meter readings or runtime tests, so I don't have those results here for you today.

As you can see above, there is a second NUV LED inside the flashlight, mounted to the bottom of the lampholder and facing outward. This LED receives only a few milliamps, so it doesn't drain the battery nearly as much as the main, reflectorized LED does.

The main LED is custom ground (like the LED in the Turtlelight), so the reflector of the flashlight can be left in and used. The beam produced by this light is a bit of a ring, but it's far from useless if that was your concern.

There is a tiny DC-DC inverter somewhere up inside the original bulb holder, so the 3.6 to 3.8 volt LEDs will work correctly even though the open circuit battery voltage is only about 3.0 volts. I have not taken apart the sample, so I can't tell you what kind of circuit is in there.

The flashlight is tough, but not indestructible. So try not to roll it under the wheels of a moving vehicle, or drop it off a rooftop onto a concrete driveway. It might break or crack if you did that.

It comes with a hanging ring built into the tailpiece. Swing the ring out to use it, fold it back down when you're finished with it. This ring is made out of plastic, so try not to reef on it too hard, or it could become broken.

The bezel has anti-roll fins built into it. So if the surface you set the Glo Lite on isn't perfectly level and flush, the light won't just summarily roll away from you. Speaking of "flush", I don't believe the light is 100% waterproof and submersible, so you probably don't want to throw it in the toilet to check. There are no O-rings anywhere in the flashlight that I can see, so try not to drown it.

Picture of the AB UV Glo Lite in action.
Wavelength is too short to be measured accurately.
Light is BRIGHT though, although this is a subjective opinion.
Wavelength appears to be right around 405nm.

Spectrographic plot
Spectrometer plot of the LED in this flashlight.
Ocean Optics USB2000 Spectrometer on loan from TWO-CUBED.

Unit was purchased for $38 (shipping included) from a Candlepower Forums member in February 2003.

The URL this light is on is right here if you're interested.

Because this is a user modification to an existing light, conventional ratings won't be applied to it.

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