12-IN-1 KEYCHAIN LASER

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Somebody set up us the bomb.

12-in-1 Keychain Laser, retail $1 ()
Manufactured by (Unknown)
Last updated 12-09-09




This article was found at a dollar store in the eastern United States sometime in August 2005.
They cost $1 each, but they *may* be erroneously priced. Seems to be an awful lot of goodies in there (laser pointer, 11 holographic projection heads, three LR44 cells, lidded plastic box, packaging) for just $1.

What this is is a keychain laser pointer. It emits a red beam (est. 640nm-650nm) with at least 6mW of output power, and it includes 11 holographic pattern projection heads that screw onto the end of the pointer, plus the 3 LR44 button cells it feeds from.

It fits on your keychain with either the split-ring or the spring-loaded "lobster claw" attachment, so you can carry it anywhere.

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?


SIZE



To use your new laser pointer, feed it first (see below), and then you'll be ready to go to town.

Press the button on the barrel and hold it down for as long as you want or need the laser beam, and release it to shut the unit back off.
Don't aim the laser at your face when you push the button, otherwise you might hit yourself in the eyes with the laser beam, and that wouldn't be very good at all.
That covers the functioning of the laser pointer itself.

To attach the holographic pattern projection heads, unscrew and remove the dome-shaped part at the front of the laser pointer, and set it aside. Screw on one of the 11 pattern projection heads, aim it at a wall or ceiling, push the button, and see if that's the one you want.

These heads are not marked in any way (that I can tell, anyway), so just keep trying heads until you find the one you want.

Once you have the head you want on your laser, place the original dome-shaped head in the box where it can easily be distinguishable from the other 10 holographic pattern projection heads, place the lid on the box, and store the box where it cannot fall or become lost.



This laser pointer requires three LR44 button cells, which are included in the package so you don't need to run to the store right away. To change them, unscrew and remove the tailpiece, dash it to the floor, and stomp on it...O WAIT!!! YOU'LL NEED THAT!!! So just set it aside instead.

Tip the open end of the laser pointer into your hand, and dispose of or recycle the three button cells that come out as you see fit.

Stack three new LR44 button cells on top of one another on a table, countertop, or other flat surface, button-end (-) negative facing up. Lower the laser pointer over this stack so all three cells are in the barrel. Slide the assembly to the edge of whatever surface you're reloading the pointer on, and place your finger over the laser pointer's opening as you slide it over the edge, so all those batteries don't just clatter to the floor. Invert (flip over) the laser pointer now, so the open end of the barrel faces up. Remove your finger. Screw the tailpiece back on, and be done with it.
Aren't you glad you didn't stomp on that tailpiece now?

Measures 27.08mA on my DMM's 40mA scale.



As "dollar store" merchandise goes, this laser pointer is built relatively sturdily. It is not water-resistant or submersible, and probably would not withstand being stomped on or run over either. But it should not break just hanging on your keychain.

Since laser pointers like this are not meant to be stomped on, run over, drowned in the commode, or otherwise abused, I will not inflict those sorts of punishments upon these. So this section of the web page will be a bit on the bare side. :-/

The laser pointer emits a red beam at approximately 640nm to 650nm in wavelength, and has an apparent output power exceeding 6mW. Yet the labelling on the box and on the laser itself indicates it outputs less than 1mW. Just thought you ought to know, in case you buy one of these and then take it with you when you travel to an area of the planet where the public use of laser pointing devices is limited to lasers of CDRH Class II (less than 1mW) or lower.

The UK is one such country, that I know of anyway.

I don't know what the punishment for breaking this rule is, but it can't be very good for your laser pointer, and maybe your pocketbook too. I don't believe you'll have to go to prison, but at very minimum I believe your laser pointer will be confiscated and you may have to pay a fine.

One of the holograph projection heads was defective right out of the box - the holographic window in it is tilted somewhat, and does not function at all.



The laser pointer's dot by itself, on the target approximately 12" away.
Does not appear white or as large in real life



The laser pointer with the "six-sided star" head on a wall approximately 5' away.
Does not appear white in real life


Other heads include such items as snowmen, cows, naked women, and etc.
In fact, here are photographs of all of the heads:


Naked woman lying down.



Genie (?).



Lion or some similar creature.



Bull.



Santa Clause.



Turtle.



I don't know what this one is suppose to be.



Peace sign.



Another peace sign - skinnier hand.



Six-sided star.



Eiffel Tower.


Spectrographic plot
Spectrographic analysis of this laser.


Spectrographic plot
Same as above; spectrometer's response narrowed to a range between 645nm and 665nm to pinpoint wavelength.
USB2000 spectrometer graciously donated by P.L.






TEST NOTES:
Two units were sent by a fan of the website, and were received 08-31-05.

The unit I have out now is mislabelled: it reads that it is a Class IIA laser device, labelled to emit less than 1mW of laser radiation. The labelling should actually read "Class IIIB" and the power output stated as "<500mW".
(Edit, a short while later): The laser pointer still in its box has a label that reads the same thing.

This laser pointer emits 6.29mW of laser radiation, as measured with a meter specifically intended for that purpose.

The packaging reads "Hi-Output Keychain Laser", not "Lo-Output Keychain Laser", so it is probably more accurate than the CDRH labelling itself. :-/


UPDATE: 00-00-00



PROS:



CONS:
Device is mislabelled


    MANUFACTURER: Unknown
    PRODUCT TYPE: Keychain laser pointer
    LAMP TYPE: Diode laser
    No. OF LAMPS: 1
    BEAM TYPE: Very narrow (it's a laser, remember?)
    SWITCH TYPE: Momentary pushbutton on/off on barrel
    BEZEL: Interchangeable holographic windows in plastic frames
    BATTERY: 3 LR44 button cells
    CURRENT CONSUMPTION: 27.08mA
    WATER RESISTANT: No
    SUBMERSIBLE: NO WAY HOZAY!!!
    ACCESSORIES: 3 batteries, 11 holographic heads
    WARRANTY: Unknown/not stated

    PRODUCT RATING:

    Star RatingStar Rating





12-in-1 Keychain Laser * (URL not known)






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