Old 05-12-2011, 12:40 PM #1
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Lightbulb Review of the 1mW 405nm Blue Violet Laser MODULE Military Exclusive

This is a fairly long post with at least 23 images in it; dial-up users please allow for plenty of load time.

1mW 405nm Blue Violet Laser MODULE Military Exclusive, retail £10.90 ($17.83*)
Manufactured by: (Unknown)
Last updated 05-13-11





The 1mW 405nm Blue Violet Laser MODULE Military Exclusive (hereinafter, just called a "Blu-ray Laser Pen") is a violet-emitting, directly-injected laser. That is, it produces violet laser radiation directly, without the need for messy, fragile nonlinear crystals like those green laser pointers and the amberish-yellow and blue ones as well. It uses two AAA cells -- the same power source used in most other "pen-style" laser pointers and laser modules.

It is advertised to output less than 1mW of laser radiation at ~405nm.
It actually measures 19.00mW at 404.65nm!!!

This is the reason I call it a "module" on my website (and in this post) instead of a "pointer". Lasers designated as "pointers" must -- by US law anyway -- have a power output that does not exceed 5mW.

It comes in a handsome brass body with a black finish and chrome colored bezel, tailcap, and pocket clip.



* IMPORTANT: Pricing is accurate as of 05-11-11. Please visit the Currency Calculator for the latest currency conversion rates from British pounds to US dollars.


SIZE



To get the laser to turn on, first be certain that there are a pair of AAA cells installed. If there aren't, then install them (see directly below), and THEN you can go irradiate something.

Aim the laser well-away from your face first. Press & hold down the button on the barrel for as long as you want or need the laser spot, and release pressure on the button to turn the laser back off.




To change the batteries in this violet laser , unscrew & remove the tailcap, and set it aside.

Tip the two used AAA cells out of the barrel and into your hand, and dispose of, recycle, or recharge them as you see fit.

Insert two new AAA cells into the barrel, flat-end (-) negative first. This is the opposite of how batteries are installed in most flashlights, so please pay attention to polarity here.

Screw the tailcap of the tube back on, and be done with it.

Current usage measures 114.70mA on my DMM's 400mA scale.



***EXTREMELY IMPORTANT!!!***
This laser has a fair amount of {vulgar slang term for male nads} to it (measured at 19.00mW), so you ***DEFINITELY*** do not want to shine it into your eyes, other people's eyes, pets' eyes, for that matter, the eyes of any person or animal you encounter. Eye damage can occur faster than the blink reflex can protect them, regardless of what species' eyes you irradiate with this laser. So just don't do it.
And para los motivos de Cristo (and for heaven sakes and for Pete sakes and for your sakes too) do not shine this laser at any vehicle, whether ground-based like a motorcycle, car, or truck, or air-based like a helicopter, airplane, or jet. And if you shoot it at a person in the dark and he turns out to be a police officer, he may think he's being targeted, unholster (whip out) his gun, and hose you down with it.

Does this evaluation look an awful lot like the one I made for this laser?
Thought you'd say so.
That's because they're functionally identical, so I was able to use its web page as a template for this one.




Beam terminus photograph of this unique (well, "not-so-unique" now) laser on the target at 12".
Beam image bloomed ***SIGNIFICANTLY***.

That white & blue color does not really exist; the spot appears to be a very deep royal purple to the eye.
Digital cameras have a tough time at these wavelengths.

And yes, I know that the colors purple and violet are two different critters, but the phrase "royal violet" would not make very much sense; however, most everybody knows what "royal purple" looks like.

Purple is a mixture of red & blue; violet is a spectral color, encompassing wavelengths of ~390nm to ~410nm.

Measures 19.00mW on a Sper Scientific Pocket Laser Power Meter # 840011; using known-new AAA cells.



Beam terminus photograph on a wall at ~10'.
Again, that white & blue color does not really exist, and beam image bloomed a bit.




Spectrographic analysis of the Blu-ray laser diode in this product.
Wavelength appears to be ~405nm, which is within specification for the type of laser diode used in this laser.




Same as above; but spectrometer's response narrowed to a band between 400nm and 410nm.
This shows that the wavelength is in fact 404.65nm.




Spectrographic analysis of the fluorescence of a uranated* glass marble when irradiated with this laser.



Spectrographic analysis of the fluorescence of the 2009 NIA Commemorative Insulator in uranated* glass when irradiated with this laser.

*"Uranated" - infused with an oxide of uranium, *NOT* piddled (urinated) on.
Commonly referred to as "Vaseline glass" because it has
a distinct pale yellow-green color when not being irradiated.


Note spelling: "urAnated", not "urEnated","urInated",
"urOnated", "urUnated", or sometimes "urYnated".

USB2000 spectrometer graciously donated by P.L.




Beam cross-sectional analysis with beam widened (x-axis).



Beam cross-sectional analysis with beam widened (y-axis).

Images made using the ProMetric System by Radiant Imaging.



TEST NOTES:
Test unit was purchased on Ebay on 05-01-11 (or "01 May 2011" if you prefer) and was received at 3:47pm PDT on 05-10-11 (or "10 May 2011").

I have decided to rate this wonderful little laser four stars!!!
If something happens down the road, I can always derate it if necessary.




UPDATE: 00-00-00


PROS:
Color is very radiant & unusual for a handheld laser
Uses inexpensive and readily available batteries
The price is right!
Color is very radiant an unu...o wait, I said that already!!!


CONS:
Just the usual suspects for laser modules/pointers - nothing that affects rating...actually, there is one little thing: it is advertised as a <1mW laser (and has a CDRH Class II warning label on it), but outputs 19mW of laser radiation.
That's what lopped that last star off.





MANUFACTURER: Unknown
PRODUCT TYPE: Violet-emitting laser
LAMP TYPE: Sony Blu-ray laser diode
No. OF LAMPS: 1
BEAM TYPE: Very narrow spot
SWITCH TYPE: Momentary on/off button on barrel
CASE MATERIAL: Brass
BEZEL: Metal; laser & lens recessed into its end
BATTERY: 2x AAA cells
CURRENT CONSUMPTION: 114.70mA
WATER- AND URANATION-RESISTANT: Light splatter-resistant at maximum
SUBMERSIBLE: ¡¡¡NINGUNA MANERA HOZAY!!! (NO WAY HOZAY!!!)
ACCESSORIES: Hinge-lidded presentation case
COUNTRY OF MANUFACTURE: China
WARRANTY: Unknown/not stated

PRODUCT RATING:






Update 05-13-11: Performed a spectrographic analysis of the fluorescence of the 2009 NIA Commemorative Insulator in uranated glass when irradiated with this laser.



Last edited by The_LED_Museum; 05-13-2011 at 12:33 PM. Reason: Performed a spectrographic analysis of a fluorescent object when irradiated with this laser.
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Old 05-13-2011, 02:52 AM #2
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Default Re: Review of the 1mW 405nm Blue Violet Laser MODULE Military Exclusive

Nice review +1, but isnt it kind of expensive for just 19mw ?

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Old 05-13-2011, 03:00 AM #3
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Default Re: Review of the 1mW 405nm Blue Violet Laser MODULE Military Exclusive

Yeah seem $$, not a special host or anything like that
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Old 05-13-2011, 03:59 AM #4
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Default Re: Review of the 1mW 405nm Blue Violet Laser MODULE Military Exclusive

Quote:
Originally Posted by Haloid95 View Post
Nice review +1, but isnt it kind of expensive for just 19mw ?

First off, thank you for the +1 rep -- much appreciated!!!

Now, to the crux of the matter here...expensive, perhaps a bit.
But remember that not that many years ago, the Wicked Lasers Sonar sold for almost $2,000.00 and it had an average power output of just 2.897246mW (it was pulsed at approx. 265Hz if I remember correctly, and had a duty cycle of 16.67%).
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Old 05-13-2011, 04:24 AM #5
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Default Re: Review of the 1mW 405nm Blue Violet Laser MODULE Military Exclusive

Wow I never knew that it was that low in ouput.
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