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PLPM4L 656

icecruncher

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Jan 2, 2008
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I tried to get more of these but they are a grand a piece from manufacturer
still waiting for PayPal to get the one you offered :)
 



aaronnoraa

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Jun 20, 2015
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Some people define LED as "light emitting device," so anything that emits photons could technically be considered an LED XD (including all lasers)

Apparenly, according to some people... the Sun, something on fire and incandescent light bulbs are LED's now. I wonder what the odds are that they're the same people claiming the Earth is flat ;-)
 

Gianakakis

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Apr 27, 2019
Messages
352
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656 - this was the number that made me wonder in the first thread about this chip. If by this wavelength was meant like in Osram PLPM 450, then this thing should be red. But deep red and not as bright to human eye as multi-die 637nm package from Necsel in the link above.

Another bad thing about red lasers - they do not like temperatures above rt.
So I would not power all rows without ice-cooled set up similar to one which I made for testing NUBM31 and Osram chip in my earlier topics.

EDIT: is the lens made of glass or plastic here? Regarding the cheap price of chips you got it could be plastic. Unlike for blue lasers plastic (acrylic) lenses can be OK for reds.
Bit late but I just confirmed its glass.
 




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