- Joined
- Nov 1, 2006
- Messages
- 549
- Points
- 43
Violet Purple Blu-ray Laser Pen, retail $2.99
Manufactured by: (Unknown)
Last updated 02-13-11
Manufactured by: (Unknown)
Last updated 02-13-11
The Violet Purple 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 10mW of laser radiation at ~405nm.
It actually measures 22.50mWmW at 404.95nm!!!
It comes in a handsome brass body with a black finish and chrome colored bezel, tailcap, and pocket clip.
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.
To change the batteries in this violet laser , unscrew the laser near the center, and set the uppr portion (the part with the laser itself in) 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 front 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 in the name of science. Lasers are meant to be loved, not punished.
Even if I were to abuse it, this is a directly-injected laser 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.
***EXTREMELY IMPORTANT!!!***
This laser has a fair amount of {vulgar term for testicles} to it (measured at 22.50mW), 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.
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 (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 (and virtually physically) identical, so I was able to use its web page as a template for this one.
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 a fairly hefty 22.50mW on a Sper Scientific Pocket Laser Power Meter # 840011; using AAA cells of unknown prior usage.
Beam photograph on a wall at ~10'.
Again, that white & blue color does not really exist.
Those colored graphics toward the left are my "Viva Piñata" 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 & Patrick Star) and a Digimon plush (Greymon).
Sectrographic 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 390nm and 410nm.
This shows that the wavelength is in fact 404.55nm.
Spectrographic analysis of the fluorescence of a uranated* glass marble when irradiated with this laser.
*"Uranated" - infused with an oxide of uranium, *NOT* tinkled (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).
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.
TEST NOTES:
Test unit was purchased on Ebay on 02-04-11 (or "04 Feb 2011" or even "Feb 04 Twenty Double Sticks" if you prefer), and was received at 3:47pm PST on 02-10-11 ("10 Feb 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 10mW laser, but outputs over 22mW 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: Unknown/unable to measure
WATER- AND URANATION-RESISTANT: Light splatter-resistant at maximum
SUBMERSIBLE: For Christ sakes NO!!!
ACCESSORIES: None
COUNTRY OF MANUFACTURE: China
WARRANTY: Unknown/not stated
PRODUCT RATING:
Last edited:
{yes, I just now did this and found that out!!!}
