KEYCHAIN-STYLE LASER POINTER

Keychain-Style Laser Pointer, retail $TBA
Manufactured by (Unknown)
Last updated 12-07-08




What this is is a keychain-style laser pointer that can be stuffed in your pocket or live in your briefcase. It emits a red beam with approximately 3.4mW of output power.

It comes in a shiny silver body, and feeds from three LR44 button cells (the ubitiquous "laser pointer battery).

Because this is a laser, you should not shine it into your eyes, other people's eyes, pet's eyes, etc. Just use a little common sense here, ok?

The emitted wavelength was spectroscopically measured at 663.9nm, in the red portion of the spectrum.


SIZE



Point the front end at whatever you wish to point out, and hold the button at the top front of its barrel down for as long as you need the laser spot. Release the button to turn the laser pointer off.

Yes, it really is that easy.

This button has a tactile "click" sensation to it. This click may also be audible to the user in a quiet location.



To change the batteries in your laser, unscrew and remove the tailcap, throw it in the {vulgar term for feces}bowl, yank that silver handle on the front of the cistern down, and flush it away...O WAIT!!! YOU'LL NEED THAT!!! So just set it aside instead.

Tip the three used LR44 cells out of the barrel and into your hand, and dispose of or recycle them as you see fit.

Insert three new LR44 cells into the barrel, button-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 back on, and be done with it.
Aren't you glad you didn't flush away that tailcap now?

Current usage measures 22.0mA using the 400mA scale on my DMM.



This is a laser pointer, 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 the concrete floor of a garage, let my housemate's citty kats go to the litterbox on it or my parent's dog's ghost lift his leg on it, run over it with a 450lb Celebrity motorised wheelchair, stomp on it, use a large claw hammer in order to bash it open to check it for candiosity, fire it from the cannoņata, drop it down the top of Mt. Erupto (I guess I've been watching the TV program "Viva Piņata" too much again - candiosity is usually checked with a laser-type device on a platform with a large readout (located at Piņata Central), with a handheld wand that Langston Lickatoad uses, or with a pack-of-cards-sized device that Fergy Fudgehog uses; the cannoņata (also located at Piņata Central) is only used to shoot piņatas to piņata parties away from picturesque Piņata Island, and Mt. Erupto is an active volcano on Piņata Island), send it to the Daystrom Institute for additional analysis, or perform other indecencies on it that flashlights might have to have performed on them. So this section of the web page about this laser pointer will be ***SIGNIFICANTLY*** more bare than this section of the web page on a page about a flashlight that was born to be a flashlight and nothing but a flashlight.

This product is properly labelled as to its wavelength and power output.



Beam photograph on the test target at 12".
Those artifacts appearing at the upper right and lower left of the main beam really do exist, but not nearly as brightly as they appear in this photograph.

dMeasures 3.44mW on a laser power meter.



Beam photograph on a wall at ~10'.

Those rectangular graphic things in the upper right quadrant of this photograph are marquees from:

Sega ''Star Trek''
Atari ''Tempest''
Venture Line ''Looping''
Jaleco ''Exerion''

upright coin-op arcade video games from the 1980s.

And those colored graphics toward the left are my "Viva Piņata" posters.


Spectrographic plot
Spectrographic analysis of this laser.


Spectrographic plot
Same as above; spectrometer's response narrowed to a range of 660nm to 680nm.
This laser has a peak wavelength of 663.9nm and a spectral line halfwidth of ~2.0nm.
USB2000 spectrometer graciously donated by P.L.






TEST NOTES:
Test unit was found on 12-05-08 while packing for a move; I believe it was received sometime in 2007 with several other diode lasers.


UPDATE: 00-00-00



PROS:



CONS:



    MANUFACTURER: Unknown
    PRODUCT TYPE: Keychain laser pointer
    LAMP TYPE: Directly-injected diode laser
    No. OF LAMPS: 1
    BEAM TYPE: Very narrow spot; it's a laser, remember?
    SWITCH TYPE: Momentary pushbutton on/off on laser's barrel
    CASE MATERIAL: Copper
    BEZEL: Metal; laser module recessed into hosel for it
    BATTERY: 3xLR44 button cells
    CURRENT CONSUMPTION: 22.0mA
    WATER RESISTANT: Very light splatter-resistance at maximum
    SUBMERSIBLE: No
    ACCESSORIES: Unknown
    WARRANTY: Unknown/TBA

    PRODUCT RATING:

    Star Rating





Keychain-Style Laser Pointer *






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