Techhood 400mW RGB Unit.

[The_LED_Museum]

Mine came just this afternoon; here are the preliminary data:

Power output peaks at 449mW.
This test was conducted on a LaserBee 2.5W USB Laser Power Meter w/Thermopile.

Beam terminus photograph on the test target at 12".

Beam terminus photograph on a wall at ~8 feet.

Spectrographic analysis of this laser (all on).

Spectrographic analysis of this laser (red), spectrometer's response narrowed to a band between 645nm and 655nm to pinpoint wavelength, which is 660.660nm.

Spectrographic analysis of this laser (green), spectrometer's response narrowed to a band between 528nm and 538nm to pinpoint wavelength, which is 532.010nm.

Spectrographic analysis of this laser (blue), spectrometer's response narrowed to a band between 450nm and 460nm to pinpoint wavelength, which is 454.700nm.

The raw spectrometer data (comma-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/42/rgbw.txt

Current usage measures 961mA when powered by two 18650 cells in series.
My bench PSU doesn't quite have the balls to power the unit at its designed Vf=12 volts, so that measurement cannot be furnished...but let's try it just for sh**s and giggles...BBS...nope, nada. The red diode only comes on above threshold and produces an estimated 50 to 70mW of power. :cryyy:

 

[Atomicrox]

Very cool, thanks for the detailed review!

What does the dot look like at a bigger distance (say 100m)?
What does the beam look like at the night sky? Whitish all the way?

 

[vk2fro]

They now have the 400mw version with a single mode 120mw diode - this should be great for scanner heads who want small spot beams to fit on tiny scanner mirrors - like my DT40Ws.

I'm very tempted to get one so I can get my PJ up and running.

http://www.ebay.com.au/itm/Single-M...Laser-Module-Analogo-Modulation-/141002284446

 

[Atomicrox]

Cool, pity it seems the 445nm is still multimode... I'd buy one if all three were single mode.

 

[vk2fro]

Wonder how hard it would be to drop in one of the singlemode blues from DTR's shop?

 

[Atomicrox]

Not sure but if someone is to do that then they'd better change the DPSS green for a diode as well, that way it should be possible for the beams to overlap much better

 

[vk2fro]

Yeah but then your starting to defeat the purpose of buying the module - a 520 green costs $130 odd, a PL450 is only a $40 upgrade

 

[Atomicrox]

Indeed

 

[EpicHam]

Any chance for some outdoor long distance beamshots?