STAMPLAMP
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StampLamp, retail $495.00 (www.stamplamp.com)
Manufactured by Solyta (URL not known)
Last updated 06-05-08




This is a fantastic desk lamp that not only produces white light, but can produce light in wavelengths ranging from 470nm in the blue to 627nm in the red (continuously adjustable peak wavelengths within that range down to the nanometer!!!), plus two wavelengths (365nm and 405nm) of ultraviolet radiation as well.

The visible wavelengths are selectable using two buttons; an LED readout on the top of the illuminator head gives you the approximate peak wavelength in nanometers (nm).

The white also has a small amount of cyan (blue-green) mixed with it; this helps to make the white light more color-correct because white LEDs are known to run low in cyan wavelengths.

WARNING!!!
The UV LEDs in this product produce significant amounts of UVA radiation, which is not very good for your eyes. DO NOT stare into this lamp when either of the UV LED sources are on. You only come with one set of eyeballs, and if you ruin them, you can't just go to the local 7-11 for some "Eyeballs-In-A-Can" and pop some new ones in. In another 1,000 years maybe, but not now.
WARNING!!!



SIZE



When the lamp is first turned on (using the rocker switch on the front of that upright post near the base) it automatically turns on in the white mode.

Any color in the visible spectrum may be displayed by pressing and holding down the red or blue button. Holding down the red button will scan the color towards the red end of the spectrum. Holding down the blue button will scan the color towards the blue end of the spectrum.

You can return later to any color by recording the number of that color in the 3-digit display and by scanning back to that number later. The 3-digit number is a relative indication of the wavelength of light as measured in nanometers (nm).

To turn on the 405nm U-0 light (the 5mm LEDs) hold down the red and white buttons at the same time for at least 3 seconds. Release the white button first.

To turn on the 365nm U-1 light (the single high-powered LED) hold down the red and white buttons at the same time for at least 3 seconds. Release the white button first.

To prevent the UV light from staying on accidentally, the UV light automatically shuts off after 5 minutes and the lamp returns to white.

The lamp can be physically adjusted using the large screw near the top of the large upright post and the smaller thumbscrew just below the base of the illuminator head.



This product is exclusively powered by AC, so I don't have to tell you which part to remove & stomp on and then tell you not to.




Photograph of the bottom of the illuminator head, showing you the 25 LEDs.

This is a loaner, and I'm sure its owner will want it back with no dings in the illuminator head or rat pellets or yukky old toliet water in the base. So I won't throw it against the wall, stomp on it, try to drown it in the {vulgar term for feces}bowl or the cistern, run over it, swing it against the concrete floor of a patio, bash it open to check it for candiosity, fire it from the cannonada (I guess I've been watching the TV program "Viva Piñata" too much again - candiosity is usually checked with a laser-type device on a platform with a large readout or with a handheld wand), send it to the Daystrom Institute for additional analysis, or inflict upon it punishments that non-loaner lights may have inflicted upon them.
So this section of the light's web page will seem a bit more bare than this section of the web page on a page about a light that is not a loaner sample.

Having said that, I did manage to ***ACCIDENTALLY*** put a scratch in the upright post next to (just above and just to the right of) the large screw...I did ***NOT*** do it on purpose - I swear to you-know-who!!! (AKA. "the man upstairs")


Here's a photograph of the damage. I used a knife blade to tighten the screw and the knife slipped. Normally, I would have used a large screwdriver, but they were left in Seattle when I was evicted from my home in late-2004 for missing a mandatory HUD meeting.


(Update 09-13-07): It has been suggested by another user of this lamp that a quarter (US 25¢ coin) can be used to manipulate this screw, and what do you know...it really does work!!!
So if you don't own or have access to a large standard screwdriver, a quarter does the trick here.

As I understand, the high-powered UV LED is Nichia in origin, and costs $125.00 for just the LED itself.

I don't have any stamps at my disposal, so I used a borrowed $20 bill to check its UV fluorescence detection capabilities.



Beam photograph (white + low cyan) on the test target at 12".
Measures 306,000mcd on a Meterman LM631 light meter.



Beam photograph (blue) on the test target at 12".
Measures 98,000mcd on a Meterman LM631 light meter.



Beam photograph (cyan) on the test target at 12".
Measures 288,000mcd on a Meterman LM631 light meter.



Beam photograph (green) on the test target at 12".
Measures 485,000mcd on a Meterman LM631 light meter.



Beam photograph (amber) on the test target at 12".
Measures 55,000mcd on a Meterman LM631 light meter.



Beam photograph (red) on the test target at 12".
Measures 79,000mcd on a Meterman LM631 light meter.



Beam photograph (UV high-powered LED) on the test target at 12".



Beam photograph (UV 5mm LEDs) on the test target at 12".



High-powered UV LED illuminating the security strip in a US $20 bill.



High-powered UV LED illuminating two acrylic pieces that exhibit strong fluorescence under UVA radiation.



Low-powered UV LEDs illuminating the security strip in a US $20 bill.



Photograph of the wavelength display on the back of the illuminator head.
As you can see, it reads "470" as in "470nm" - the blue LEDs were on at the time.
The blue LEDs produce radiation peaking at ~470nm.


Spectrographic plot
Spectrographic analysis of the LEDs (white + low cyan) in this lamp.


Spectrographic plot
Spectrographic analysis of the LEDs (blue) in this lamp.
Reads "470" on the display.


Spectrographic plot
Spectrographic analysis of the LEDs (cyan) in this lamp.
Reads "505" on the display.


Spectrographic plot
Spectrographic analysis of the LEDs (green) in this lamp.
Reads "530" on the display.


Spectrographic plot
Spectrographic analysis of the LEDs (amber) in this lamp.
Reads "590" on the display.


Spectrographic plot
Spectrographic analysis of the LEDs (red) in this lamp.
Reads "627" on the display.


Spectrographic plot
Spectrographic analysis of the LEDs (low-powered NUV) in this lamp.
They emit a wavelength peaking at ~400nm.


Spectrographic plot
Spectrographic analysis of the LED (high-powered UV) in this lamp.
It emits a wavelength peaking at ~365nm.
USB2000 spectrometer graciously donated by P.L.






TEST NOTES:
Test unit was loaned to me by M.B. of StampLamp on 08-15-07, and was received on the afternoon of 09-06-07.

I'll have custody of it for 7 to 10 days, then it will be returned.

Note: The wall mount power supply is factory set to 5 volts. The 5 volt position is locked in place. Do not attempt to change it.

As far as I am able to determine, product was made in the United States.
A product's country of origin really does matter to some people, which is why I published it on this web page.


UPDATE: 09-12-07
It has been revealed to me that the array of 400nm 5mm LEDs will soon be replaced by a pair of ~254nm CCFT fluorescent light bulbs.


UPDATE: 09-20-07
Product has been returned, so that dreadful "" icon has been added next to its listings on this website.


UPDATE: 06-05-08-07
Here's a photograph furnished by this product's manufacturer:








PROS:



CONS:



    MANUFACTURER: Solyta
    PRODUCT TYPE: Multicolored desk lamp
    LAMP TYPE: High powered LED, 5mm LED
    No. OF LAMPS: 25 (1 high-powered UV, 2 white, 2 blue, 2 cyan, 2 green, 2 amber, 2 red, 12 low-powered (5mm) NUV)
    BEAM TYPE: Narrow flood
    SWITCH TYPE: Rocker switch on/off, pushbuttons for color control
    CASE MATERIAL: Plastic
    BEZEL: N/A
    BATTERY: N/A
    CURRENT CONSUMPTION: Unknown/unable to measure
    WATER RESISTANT: Very light splatter-resistance only
    SUBMERSIBLE: No
    ACCESSORIES: AC adapter
    WARRANTY: Unknown/not stated

    PRODUCT RATING:

    Star Rating





StampLamp * www.stamplamp.com






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