Cyan 488nm Directly-Injected Diode Laser Pen

Retail $65.00
Manufactured by (unknown),
Last update: 12-10-23

This is a 488nm cyan (greenish-blue) directly-injected laser pen that is designed to output 50mW. It is made primarily from brass, covered with what I believe is a black baked enamel finish.

Wavelength appears to be 488nm on the button.

Feed the laser pointer a pair of AAA cells first, and then you'll be ready to rock.

To use the laser pointer, just aim it at something you wish to point out, and press & release the button on the tailcap. Press and release it again to neutralise the laser pointer.

To change the batteries in this laser, unscrew the tailcap, and set it aside.

Tip the used AAA cells out of the barrel and into your hand, and dispose of, recycle, or recharge them as you see fit. Please do not under any circumstances flush them down a toliet or throw them into a salmon-filled stream or those tree-huggers might hunt you down and then beat the living tweedle out of you. ;-)

Insert two new AAA cells into the barrel, button-end (+) positive first. This is the opposite of how batteries are installed in most laser pointers, so please pay attention to polarity here.

Screw the tailcap back on, and be done with it.

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, run over it with a 450lb Celebrity motorised wheelchair, stomp on it, 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 a bit more bare than this section of the web page on a page about a flashlight.

This laser is not water-resistant, so please be extra careful when using it around sinks, tubs, loos (toliets), fishtanks, pet water bowls, or other places where water or water-like liquids might be found. And you'll probably want to cover it up or otherwise get rid of it (such as by putting it in a pocket or bag) if you need to use it in rain or snow.

There are no current usage, optical power output measurements or spectrographic analyses because I no longer own or have access to a DMM, LPM, or spectrometer.

I was not able to measure wavelength with a diffraction grating and a meter stick because there is insufficient space here, and an outdoor measurement is not possible because I'm in a wheelchair after falling prey to a crippling stroke on 03-21-22 and my physical ability to measure with this equipment is extremely limited at best.

Beam terminus photograph on a wall at ~8 feet.
Reshot the photo to remove two uranator jugs; I've been receiving complaints about them.

Beam photograph reflecting from a standard household 2nd surface mirror at ~5 feet.
Incense was burning nearby, and an episode of Cash Cab was on the telly.

Photograph of the beam itself taken with my HoverAir X1 Flying Camera.
As you can see, this is a frame from a YourTube video that I made.

Flunky switch on my 488nm laser pen; note how the laser power varies quite dramatically.
An episode of Star Trek Voyager was playing on the telly; the sound may safely be ignored or muted if it piddles you off.

Test unit was purchased from Ebay i n late-August 2022.

UPDATE 00-00-00

Color is extremely radiant and unuusual for a portable laser
Nice beam quality -- beam is exceptionally clean with no unwanted "nasties" (artifacts) in it
Uses batteries that are common and relatively inexpen$ive
Appears significantly brighter than expected

NEUTRAL: Not waterproof or submersible - but most pointers aren't. Will not figure into my rating
More delicate than directly-injected diode laser pointers/pointers. Again, will not figure into my rating

CONS: Pushbutton switch feels a bit flunky