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Aliexpress seller tells truth! 445nm @ 10mW

clansley

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Just a FYI - I ordered this 10mW 445nm pen laser: "Unique 10mW 445nm 450nm Blue Ray Portable Laser Pointer Pen Osram Diode"

It has just arrived and it actually is 10mW and 445nm! I'm so used to seeing lies that I found it unbelievable that this seller tells the truth!

Update: I compared it to my 405nm and it is clearly 445nm! One odd thing - even though it looks like all my other cheap pens it is much heavier!
 
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clansley

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Yeah I questioned them about that and I think that is just poor English. i.e. it has a blue ray/beam not that it is bluray (405).

This was the dialog:
Me said:
Your title says "blue ray" but blu-ray would be 405nm. Can you assert it really is 445-450nm ?
Jesse Ma said:
hello
please dont worry
it is 450nm, pure blue ray
405nm is violet/blue ray
thanks
 
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RYDorDIE278

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Nice find! thankz for sharing, its so hard to believe sometimes with the Language barriers on chineese products
 

mortuus

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what a clueless seller lol, 445-450 is not blu-ray lol..
 

Alaskan

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405nm blu-ray diodes are nasty little burners, I was burning stuff across the room with a 700mw output one earlier today, they seem to have more punch for the power than 445nm, just that you can't see the beam very well.
 

NRGLite

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Glad to know that there is a white sheep among so much black or down right dumb sheep. Good to know someone spoke the truth for once...

...or DID THEY?
 

mortuus

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405nm blu-ray diodes are nasty little burners, I was burning stuff across the room with a 700mw output one earlier today, they seem to have more punch for the power than 445nm, just that you can't see the beam very well.
wow thats crazy.
 

LtKernelPanic

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Nice find. I want to get a low powered 445. I'd like something in the 50mw range though. Still tempting to snag one since that's half the price of anything I've seen on fleabay.
 

mortuus

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Nice find. I want to get a low powered 445. I'd like something in the 50mw range though. Still tempting to snag one since that's half the price of anything I've seen on fleabay.
or buy a 100mW 450 from laserbtb like i did, totally worth it.
 

The Lightning Stalker

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The diode is probably an underdriven PL 450
or PL 450B. That is a pretty good price,
too. A whole laser for almost the price of
the diode.
 

clansley

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The diode is probably an underdriven PL 450
or PL 450B. That is a pretty good price,
too. A whole laser for almost the price of
the diode.
It's still working well and gets a lot of use.

What's interesting is it looks exactly like my other cheap eBay pens except it weights a lot more, almost like it is made of metal but the rest I have are made of plastic!
 

The Lightning Stalker

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The module they're using probably has
thicker brass. Most pens have thin brass
or aluminum in the beam expander of the 532
ones. I made up a solid brass battery
spacer a while ago and it adds a surprising
amount of heft to a pen.
 
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Dr_Evil

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405 isn't technically blu-ray either. We could call it HD-DVD.;)
 




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