Old 03-17-2011, 01:56 PM #1
Class 2 Laser
 
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Class 2 Laser
 
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Talking Review of the White/UV LED/*LASER* Pointer Flashlight

This is a long page with at least 27 images on it; dial-up users please allow for plenty of load time.
White/UV LED/Laser Pointer Flashlight (3), retail $TBA {est. less than $5.00}

Manufactured by (Unknown)
Last updated 03-17-11


I found this flashlight while looking for something else that required spectroscopy; it is something I most likely purchased on Ebay within the last several years. I bought it because the price was right (I believe it was significantly less than $5.00), and it has white LEDs, UV LEDs, and a red laser pointer in it. All three functions are easily accessible with a single pushbutton.

It comes in an aluminum body, it has 10 white LEDs, 5 UV LEDs, and a red diode laser in its business-end, and feeds from three AAA cells that are held in a side-by-side carriage in the barrel.

The laser measures 3.8409mW at a wavelength of 665.05nm.


SIZE



To use this neat multipurpose flashlight, feed it first (see directly below), and then you can make use of it.

Press the button on the barrel until it clicks and then release it to turn the white LEDs on.
Press the button on the barrel until it clicks and then release it to turn the UV LEDs on.
Press the button on the barrel until it clicks and then release it to turn the LEDs off and the diode laser on.
Press the button on the barrel until it clicks and then release it to turn the flashlight all the way off.

Just like it reads on the back of many shampoo bottles, "lather, rinse, repeat". In other words, the cycle starts over with the next press of the button.




To change the batteries, unscrew and remove the tailcap, and set it aside.

Tip the black plastic battery carriage out of the barrel and into your hand. If necessary, remove and dispose of or recycle the used AAA cells from it.

Insert three new AAA cells into the carriage, orienting each cell so its flat end (-) negative faces the spring for it in each chamber.

Slide the now-full battery carriage into the flashlight barrel, orienting it so the spring on one end of the carriage goes in first. Finally, screw the tailcap firmly back on.

Current usage measures 102.11mA (white LEDs), 91.30mA (UV LEDs), and 32.00mA (laser diode) on my DMM's 400mA scale.

This equates to 10.211mA per LED (white), and 18.26mA per LED (UV).

This product is not labelled for CDRH compliance (which they must if a laser is included). Not on the flashlight itself, and not on the plain white box it came in.
The laser in this flashlight measures 3.8409mW, making it a CDRH Class IIIa instrument.
So you should not get in too much trouble if you use it in public, and some dillhole cop confiscates it and has it measured.

Does this evaluation look an awful lot like the one I wrote for this product?
Thought you'd say so.
That's because they're extremely similar in body style and identical in function, so I was able to use its eval. as a template for this one.




Beam photograph (white LEDs) on the test target at 12".
Measures 70,100mcd on a Meterman LM631 light meter.


Beam photograph (UV LEDs) on the test target at 12".
Wavelength is too short for me to measure intensity with the instruments at my disposal.


Beam photograph (laser) on the test target at 12".
Measures 3.8409mW on a Sper Scientific Pocket Laser Power Meter # 840011.


Photograph of the laser spot on a wall at ~10'.


Photograph of the white LED beam on a wall at ~10'.


Photograph of the UV LED beam on a wall at ~10'.

Those colored graphics in the last three photographs above (toward the left) are my "Viva Piņata" posters, and that clock on the right that looks like a gigantic wristwatch is my Infinity Optics Clock. You may also be able to see two of my SpongeBob SquarePants plush (Squidward Tentacles & Patrick Star) and a Digimon plush (Greymon)




Spectrographic analysis of the white LEDs in this flashlight.




Spectrographic analysis of the UV LEDs in this flashlight.
Looks like the peak wavelength is 399nm.




Spectrographic analysis of the red laser diode in this flashlight.




Same as above; spectrometer's response narrowed to a band between 650nm and 660nm to show laser's peak wavelength; which appears to be 665.65nm.




Spectrographic analysis of the fluorescence of a uranated glass marble when irradiated with the UV LEDs in this product.

USB2000 spectrometer graciously donated by P.L.




Beam cross-sectional analysis (white LEDs).



Beam cross-sectional analysis (UV LEDs).



Beam cross-sectional analysis (Laser, X-axis).



Beam cross-sectional analysis (Laser, Y-axis).

Note if you will that the laser beam is being rather severely vignetted -- in this case however, this isn't such a bad thing as it keeps the laser output power levels within CDRH Class IIIA limits, so it can be legally used as a laser POINTER and be safely used as a cat toy.

Images made using the ProMetric System by Radiant Imaging.



TEST NOTES:
Test sample was found apparently new and unopened on 03-14-11 (or "14 Mar 2011" if you prefer) while looking for something else that required spectroscopy.


UPDATE: 00-00-00



PROS:
Nifty 3-in-1 instrument
Nice looking body that's also pleasant to hold
Uses batteries that are common and relatively inexpen$ive



CONS:
Not labelled for CDRH compliance (product includes a laser)
Product uses a battery carriage -- one more thing to become lost or broken
Not too water-resistant and not submersible at all





MANUFACTURER: Unknown
PRODUCT TYPE: Multipurpose flashlight
LAMP TYPE: 5mm LED, diode laser
No. OF LAMPS: 16 (10 white LEDs, 5 UV LEDs, 1 diode laser)
BEAM TYPE: Medium spot (LEDs), very narrow spot (laser)
SWITCH TYPE: Pushbutton on/mode change/off on barrel
CASE MATERIAL: Aluminum
BEZEL: Metal; LEDs and laser inside hosels (cells) for them
BATTERY: 3xAAA cells
CURRENT CONSUMPTION: 32.00mA to 102.11mA
WATER-RESISTANT: Very light splatter-resistance at maximum
SUBMERSIBLE: FOR CHRIST SAKES NOOOOOOO!!!
ACCESSORIES: Nylon belt holster
COUNTRY OF MANUFACTURE: China
WARRANTY: Unknown

PRODUCT RATING:







Last edited by The_LED_Museum; 03-17-2011 at 08:24 PM.
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