GREEN WEAPONS
LASER AIMER

Green Weapons Laser Aimer, retail $109.99
Manufactured by (Unknown) for Lighthound (www.lighthound.com)
Last updated 08-24-10






This is a green laser aiming device that attaches to a handgun. Until recently, all laser aiming devices for guns used red lasers; this is the first commercially-available green laser aimer that I am aware of.

You can use it with the included tape switch on a coily cord, or you can affix a constant-on tailcap to it so the laser aimer operates continuously.


SIZE



I do not own or have access to a gun, so I am not prepared to tell you how to mount it to a pistol or align it.

To turn the unit on, squeeze and hold the tape switch. Release the tape switch to turn the laser aimer off.

To use the constant-on tailcap, unscrew and remove the tailcap with the tape switch attached to it. Slide the metal collar toward the coily cable; continue passing this collar through the cable until it is completely out.
Place the solid tailcap in the large end of the collar, so the spring faces outward (toward the large end of the collar). Finally, screw this tailcap onto the laser unit itself.
The laser will emit a green beam until this tailcap is removed.



To change the battery in this product, unscrew and remove the tail switch or tailcap, throw it in the {vulgar term for feces}bowl, yank that silver handle on the cistern down, and flush it away...O WAIT!!! YOU'LL NEED THAT!!! So just set it aside instead.

Tip the used CR123A cell out of the barrel and into your hand, and dispose of or recycle it as you see fit.

Insert a new CR123A cell 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 tail switch or tailcap back on, and be done with it.
Aren't you glad you didn't flush away that tail switch or tailcap now?

Current usage measures 154.8mA on the included Great Power cell.



This is a laser aiming device, not a flashlight. So I won't throw it against the wall, stomp on it, try to drown it in the toilet bowl or cistern, run over it, swing it against the corner of a concrete stair, or inflict upon it punishments that flashlights may have inflicted upon them. So this section of the laser's web page will seem a bit more bare than this section of the web page on a page about a flashlight.
Since this is a loaner, I wouldn't do "The Smack Test" or "The Toilet Test" on it in any case.

Green diode lasers are a lot different than those common red lasers you see all the time.

In a 640nm red laser pointer, there's a red-emitting diode and a lens to collimate (focus) the beam.

In a 532nm green laser (pointer, aimer, or larger modules), there's a BIG infrared laser diode that generates laser light at 808nm, this is fired into a crystal containing the rare-earth element "neodymium". This crystal takes the 808nm infrared light and lases at 1064nm (yes, deeper in the infrared!). This 1064nm laser light comes out of the NdYV04 (neodymium yttrium vanadium oxide) crystal and is then shot into a second crystal (containing potassium, titanium, & phosphorus, usually called KTP) that doubles the frequency to 532nm - the bright green color you see. This light is then collimated (focused) by a lens and emerges out the laser's "business end". Just before the lens, there's a filter that removes any stray IR (infrared) rays from the gpump diode and the neodymium crystal. You don't want that stuff in your green beam, trust me. :-)

This is why green diode lasers are so much more expensive than red ones. Lots of itty bitty parts, and they all need to be aligned by hand. If the polarisation is "off", one or both crystals need to be turned. With red diode lasers, you just slap in the diode and slap a lens in front of it.

Because I do not own or have access to a gun, I cannot demonstrate how this product might be used with one.

Power output measures 1.11mW (milliwatts). The power output is this low because you do not want to be targeted by the recipient of your laser following a brilliant green laser beam back to you and subsequently hosing you down with his own gun. This reduced power output helps to prevent that.



Beam photograph on the test target at 12".
Beem image bloomed on this photograph; it is significantly smaller and not white in reality.
Measures 1.11mW on a laser power meter.



Beam photograph at ~15 feet.
The beam spot is in the center of that red triangular thing.

That red triangle thing is from an American DJ Laser Widow, and that rectangular graphic thing near the bottom is a marquee from a Williams 'Stargate' upright coin-op video game from the early-1980s.


Spectrographic plot
Spectrographic analysis of the laser in this product.


Spectrographic plot
Same as above; newer spectrometer software & settings used.
USB2000 spectrometer graciously donated by P.L.



ProMetric analysis
Beam cross-sectional analysis.
Image made using the ProMetric System by Radiant Imaging.






TEST NOTES:
Test unit was furnished as a loaner from Lighthound on 11-24-05, and was received on the afternoon of 11-29-05.


UPDATE: 03-27-06
I have decided to rate this product a full five stars and place it in The Trophy Case on this website.



UPDATE: 01-27-08
The web URL that this product could be purchased from is no longer valid; I do not know where to purchase this or similar green weapons laser aimer, so please stop calling & emailing.





PROS:
Beam is free of artifacts & other nasties
At least somewhat sprinkle-resistant
Dim enough to not be traced by your target following the beam
Withstands recoil (kick) of gun when weapon is fired


CONS:
None that I have found as of yet


    MANUFACTURER: Unknown/TBA
    PRODUCT TYPE: Laser weapon sight
    LAMP TYPE: Green DPSS laser
    No. OF LAMPS: 1
    BEAM TYPE: Very narrow spot (it's a laser, remember?)
    SWITCH TYPE: Tape switch momentary on/off
    BEZEL: Metal; output lens protected by a glass window
    BATTERY: 1xCR123A cell
    CURRENT CONSUMPTION: 154.8mA
    WATER RESISTANT: Sprinkle-resistant at minimum
    SUBMERSIBLE: No
    ACCESSORIES: 2 batteries, constant-on tailcap, tape switch, pistol mount
    WARRANTY: Not stated/TBA

    PRODUCT RATING:

    Star Rating





Green Weapons Laser Aimer *






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