Old 10-18-2010, 01:27 PM #1
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Talking Review of the 5mW Violet Laser Module w/"Constellation" Lens

This is a long page with at least 42 images on it; dial-up users please allow for plenty of load time.
Somebody set up us the bomb.

5mW Violet Laser Module w/"Constellation" Lens, retail $12.24
Manufactured by: (Unknown)
Last updated 10-18-10




The 5mW Violet Laser Module w/"Constellation" Lens is only the fourth commercial application of the much vaunted Blu-ray diode laser in a pointing device {AS OF EARLY-JULY 2010!!!}; this was the first, introduced in mid-2007; this was the second, introduced in early-2009; and this was the third, introduced in September 2009.

It is advertised to output 5mW of laser radiation at ~405nm.
It actually measures a whopping 44.60mW at 403.45nm!!!

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


SIZE



To get the laser to turn on, first be certain that there are a pair of AAA cells installed. If there isn'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 use the holographic "constellation" "lens", just screw it onto the "business-end" of the laser. Press & hold down the button, and rotate (turn) the "lens" to see the patterns change.





To change the batteries in this violet laser , unscrew the laser near the center, and set the lower portion 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 back portion of the tube back on, and be done with it.

Unable to measure current use due to how this laser was constructed.




This is a self-contained laser , and not a flashlight meant to be carried around, thrashed, trashed, and abused - so I won't abuse it like one.

This is a directly-injected laser though, who's active components are the inverter circuit, the laser diode, and the collimating lens. So it should withstand accidents better than a DPSS (diode pumped solid state) laser - the type of laser assembly found in yellow (593.5nm), green (532nm) and blue (473nm) laser pointers. These lasers have several additional components (crystals, filters, etc.) in the optical train, and you can knock them out of alignment by doing little more than looking at them the wrong way. And if any of these components are knocked out of whack, you'll no longer get your yellow, green, or blue laser beam.
Though you still do not want to intentionally drop your violet-emitting laser because it's a precision optical instrument.

***EXTREMELY IMPORTANT!!!***
This laser has a fair amount of {vulgar term for male testicles} to it (measured at 44.60mW!), 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 for Christ sakes (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 (pull out) his gun, and hose you down with it.

Very brief eye exposure (getting "flashed" for example) while the "constellation" "lens" is in place is kosher because the power density of the individual "star" that "got you" is too low to cause any permanent harm, provided you don't just stare into the silly thing.





Beam photograph of this unique laser on the test 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 an incredible 44.60mW (!) on a laser power meter specifically designed for this purpose; using AAA cells of unknown prior usage.



Beam photograph on a wall at ~10'.
Again, that white & blue color does not really exist.




Beam photograph on the test target at 12"; the holographic "constellation" "lens" was used.




Beam photograph on a wall at ~10'; the holographic "constellation" "lens" was used.
Once again, that white & blue color does not really exist.

Those colored graphics toward the left are my "Viva Piņata" posters, and that clock on the right that looks like a gigantic wristwatch is my Infinity Optics Clock.
You may also be able to see two of my SpongeBob SquarePants plush (Squidward Tentacles and Patrick Star) and a Digimon plush (Greymon).





Spectrographic analysis of the Blu-ray laser diode in this product.
Wavelength appears to be ~402nm, 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 403.45nm.




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 anion 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".




Spectrographic analysis of the fluorescence of the 405nm Violet Laser Phosphor Target when irradiated with this laser.




Spectrographic analysis of the afterglow of the 405nm Violet Laser Phosphor Target ***AFTER*** being irradiated with this laser.




Spectrographic analysis of the fluorescence of the pink fur of a [url=http://spongebob.wikia.com/wiki/Patrick_Star" target="new">Patrick Star[/url] Plush (Stuffed Critter) when irradiated with this laser.




Spectrographic analysis of the fluorescence of the purple stripe on a [url=http://www.vivapinata.com/" target="new">Fergy Fudgehog[/url] sticker dispenser when irradiated with this laser.




Spectrographic analysis of the fluorescence of the green safety stripes of a LEDTronics VestLED when irradiated with this laser.




Spectrographic analysis of the fluorescence of the orange mesh of a LEDTronics VestLED when irradiated with this laser.




Spectrographic analysis of the fluorescence of the phosphor cap of a Nichia NSPWR70CSS-K1 White High-Flux LED when irradiated with this laser.




Spectrographic analysis of the fluorescence of a Blue Tritium Glow Ring when when irradiated with this laser.




Spectrographic analysis of the fluorescence of a Pink Tritium Glow Ring when irradiated with this laser.




Spectrographic analysis of the fluorescence of the outer casing of the Dorcy Marshalling Wand when irradiated with this laser.




Spectrographic analysis of the fluorescence of the red body of an Interactive Guilmon Toy when irradiated with this laser.




Spectrographic analysis of the fluorescence of the red body of the Extreme Light when irradiated with this laser.




Spectrographic analysis of the fluorescence of the Tritium Torch when irradiated with this laser.




Spectrographic analysis of the fluorescence of the yellow outer casing of the Value Tool Set[/b] when irradiated with this laser.





Spectrographic analysis of the fluorescence of a piece of dark pink paper when irradiated with this laser.




Spectrographic analysis of the fluorescence of the phosphor cap of a Nichia NSPWR70CSS-K1 White High-Flux LED when when irradiated with this laser.

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).

These charts show the somewhat ovoid beam profile;
this is consistent with directly-injected diode lasers.

Images made using the ProMetric System by Radiant Imaging.





Video clip on YourTube showing the "constellation" "lens" being slowly rotated.

This clip is approximately 5.112356485445 megabytes (5,334,388 bytes) in length; dial-up users please be aware.
It will take no less than twenty six minutes to load at 48.0Kbps.




Video clip on YourTube showing the unit being "swept" across a wall.

This clip is approximately 5.997856344434 megabytes (6,162,858 bytes) in length; dial-up users please be aware.
It will take no less than thirty minutes to load at 48.0Kbps.






Video clip on YourTube showing the unit being "swept" across a wall; the DigiGr8 DV182 camera was used this time.

This clip is approximately 0.963223543301 megabytes (981,528 bytes) in length; dial-up users please be aware.
It will take no less than five minutes to load at 48.0Kbps.

I cannot provide any of these videos in other formats, so please do not ask.





TEST NOTES:
Test unit was purchased on Ebay on 07-06-10 (or "06 Jul 2010" if you prefer), and was received at 4:06pm PDT on 07-10-10 ("10 Jul 2010").

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: 07-27-10
From somebody who knows there {vulgar slang term for poo-poo; rhymes with "pit"} about lasers, comes this information:


More on 50-60 mW violet lasers:

The spot is not safe to stare into from close distances. At 60 mW,
assuming a perfectly diffuse-reflecting white wall and fully dilated
pupil, the spot is at borderline between Class I and Class II at a little
over 7 feet. This wavelength also has the extra ill effects of blue and
a bit of the ill effects of UV.

Usually a yellowish dye that naturally exists in the lens of the eye
significantly attenuates deep violet wavelengths. However, this is not
completely reliable. You probably do not want to stare at the violet spot
for more than a couple seconds from distances within a couple feet.

If the spot or your eyes keep moving, then things are OK.





UPDATE: 08-01-10
Measured its power output with known-good AAA cells: 49.50mW






PROS:
Color is very radiant & unusual for a handheld laser
Uses inexpensive and readily available batteries
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 5mW laser, but outputs close to 50mW 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 - and lots of "stars" with "constellation" lens in place
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: Unknown/unable to measure
WATER- AND PEE-RESISTANT: Light splatter-resistant at maximum
SUBMERSIBLE: For Christ sakes NO!!!
ACCESSORIES: "Constellation" lens
COUNTRY OF MANUFACTURE: China
WARRANTY: Unknown/not stated


PRODUCT RATING:







Last edited by The_LED_Museum; 10-18-2010 at 01:29 PM.
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