MYSTERIOUS RED LASER POINTER (2)

Mysterious Red Laser Pointer (2), retail $TBA
Manufactured by: (Unknown)
Last updated 09-13-13




The Mysterious Red Laser Pointer (2) is...what else...a red-emitting directly-injected diode laser. That is, it produces red 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 comes in a handsome brass body with a black finish and gold colored tailcap and pocket clip.

I call it the "Mysterious" Red Laser Pointer because I have absolutely no fracking clue as to where I got it or who makes it.


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; they're included), and THEN you can go irradiate something.

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 laser pointer, unscrew the laser near the "business-end", throw the upper portion into the dustbin (garbage can), tie off the bin liner (plastic garbage bag), carry it to outdoor wheelie bin (wheeled garbage can), throw it in, slam the lid down, and wait patiently for garbage day so that the dustman (garbage man) empties the wheelie bin into his dust lorry (garbage truck)...O WAIT!!! THAT'S THE GOOD PART!!! So just set it aside instead.

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, nipple-end (+) positive 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 try to drown it in the toliet tank, bash it against a steel rod or against a concrete porch, let my mother's big dog's ghost or my sister's kitty cats piddle (uranate) on it, run over it with a 450lb Celebrity motorised wheelchair, stomp on it, use a small or medium ball peen hammer in order to bash it open to check it for candiosity, fire it from the cannoñata, drop it down the top of Mt. Erupto (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 (located at Piñata Central {aka. "Party Central"}), with a handheld wand that Langston Lickatoad uses, or with a pack-of-cards-sized device that Fergy Fudgehog uses; the cannoñata (also located at Piñata Central) is only used to shoot piñatas to piñata parties away from picturesque Piñata Island, and Mt. Erupto is an active volcano on Piñata Island), send it to the Daystrom Institute for additional analysis, or perform other indecencies on it that a flashlight might have to have performed on it. So this section of the web page will be ***SIGNIFICANTLY*** more bare than this section of the web page on a page about a flashlight.

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 nocked 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 red-emitting laser because it's a precision optical instrument.

I did however, perform "The Knife Test" on it. When I slid the blade of a large folding knife transversely across the barrel near the tailpiece, I rather easily exposed the bare Metalbeezelmon - er - the bare Metalbeetlemon - um that's not it either...the bare Metalmarineangemon...er...uh...wait a sec here...THE BARE METAL (guess I've been watching too much Digimon again! Now I'm just making {vulgar slang term for caca} up!!! ) where I had dragged the knife blade.



Beam photograph of this laser on the test target at 12".


Measures 3.510mW on a Sper Scientific Pocket Laser Power Meter # 840011; using the AAA cells I found already inside of it.



Beam photograph on a wall at ~8'.


Power output measurement
Power output : 3mW.

This measurement was performed on a LaserBee 2.5W USB Laser Power Meter w/Thermopile.


Spectrographic analysis
Spectrographic analysis of the laser diode in this product.
Wavelength appears to be ~650nm, which is within specification for the type of laser diode used in this laser.


Spectrographic analysis
Same as above; but spectrometer's response narrowed to a band between 645nm and 665nm.
This shows that the wavelength is in fact 655.466nm.


Spectrographic analysis
Spectrographic analysis of the the laser diode in this product; newest (01-13-13) spectrometer software settings used.


Spectrographic analysis
Spectrographic analysis of the laser diode in this product; newest (01-13-13) spectrometer software settings used. Spectrometer's response narrowed to a band between 650nm and 660nm to pinpoint wavelength, which is 654.100nm.

The raw spectrometer data (tab-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/43/mred2.txt

USB2000 Spectrometer graciously donated by P.L.


ProMetric analysis
Beam cross-sectional analysis with beam widened (x-axis {fast axis}).



ProMetric analysis
Beam cross-sectional analysis with beam widened (y-axis {slow axis}).

These charts (especially the upper one) 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 obtained at an unknown time (but almost certainly within the last two years) from an unknown venue.





UPDATE: 00-00-00






PROS:
Uses inexpensive and readily available batteries
Low power output makes this laser kosher to use as a cat toy


CONS:
No CDRH-mandated laser warning label on laser itself or on packaging (there goes ½ the star)
Feels a bit on the "chintzy" side (and there goes the other ½)


    MANUFACTURER: Unknown
    PRODUCT TYPE: Red-emitting laser pointer
    LAMP TYPE: Directly-injected red-emitting 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: ¡¡¡PARA NO DE LOS MOTIVOS DE LA COGIDA!!!
    ACCESSORIES: Batteries, foam-lined cardboard storage case
    COUNTRY OF MANUFACTURE: China
    WARRANTY: Unknown/not stated

    PRODUCT RATING:

    Star Rating





Mysterious Red Laser Pointer (2) Pointer *






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