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Old 07-03-2015, 04:58 AM #17
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Default Re: At under $3, what the hell

Quote:
Originally Posted by crazyspaz View Post
Wow that's pretty craptastic lol. They must be the ones that failed the "turn on" test somewhere
I actually think the very dim ones are the most dangerous as they're all pumping out ~80mW of IR. Scenario: you order one, you push the button and get a very faint green dot, you don't know how dpss lasers work and you look right into the barrel and get 80mW of IR straight to the retina.

Bad. Quite bad.


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Old 07-03-2015, 05:06 AM #18
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Default Re: At under $3, what the hell

idk if it would be worth it but check this out: 10pcs Powerful Bright 5mW 650nm Red Laser Pointer Pen Beam Light for Gift Party | eBay

only like 1.65$ each, i don't get how they can even make these things so cheap! how are the possibly making a profit!
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660nm laser 303, LED'ed, 5mW
638nm HL63193MG @1.2A, S1 lens, 501B, ~900mW
532nm 100mW HL from laserbtb
515nm 30mw HL-515 laserbtb
488nm JSDU 2214-20SLMD 20mW Argon-Ion
445nm "2W" from lazerpoint
405nm BDR-209 16x @ 0.6A, S1 lens, 501B, ~900mW

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I have a good basic understanding of DPSS and gas lasers, so if you have questions, feel free to PM me! I don't know hardly anything about electronics though.
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Old 07-03-2015, 05:24 AM #19
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Default Re: At under $3, what the hell

Quote:
Originally Posted by micheal rosen View Post
idk if it would be worth it but check this out: 10pcs Powerful Bright 5mW 650nm Red Laser Pointer Pen Beam Light for Gift Party | eBay

only like 1.65$ each, i don't get how they can even make these things so cheap! how are the possibly making a profit!
because they make countless thousands of them Things get cheaper with quantity.
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Old 07-03-2015, 05:30 AM #20
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Default Re: At under $3, what the hell

i know but at that point i would think the raw materials would be more expensive, don't you? i think ill get some and see how they do, even though i don't have a meter.
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660nm laser 303, LED'ed, 5mW
638nm HL63193MG @1.2A, S1 lens, 501B, ~900mW
532nm 100mW HL from laserbtb
515nm 30mw HL-515 laserbtb
488nm JSDU 2214-20SLMD 20mW Argon-Ion
445nm "2W" from lazerpoint
405nm BDR-209 16x @ 0.6A, S1 lens, 501B, ~900mW

Future Plans:
NUBMO7E Large Custom Host Build.

I have a good basic understanding of DPSS and gas lasers, so if you have questions, feel free to PM me! I don't know hardly anything about electronics though.
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Old 09-02-2015, 12:49 AM #21
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Default Re: At under $3, what the hell

Considering the price i'd say its a fair deal, apart from the serious IR leakage:

Quote:
Originally Posted by WizardG View Post
Unit # mW 532 mW IR 808+1064
1 19.06 31.66
2 12.71 61.21
3 16.94 38.54
4 9.81 55.86
5 14.87 41.07
6 6.76 59.24
7 9.26 49.22
8 13.44 39.62
9 16.32 30.47
10 30.14 24.46
11 0.21 70.58
12 1.13 80.63
13 0.63 81.57
14 0.86 85.67
15 0.08 88.68
16 2.06 76.52
17 1.68 80.11
18 0.69 81.26
19 1.12 61.62
20 nada, 87.62
8 out the 20 produced at (a rounded) 10 mW or more, with the ones producing more green light leaking less IR. Since its 808 and 1064 combined on the IR here i cannot say for certain what the problem is: drive wavelength mismatch or doubler efficiency.

Then again, if you were to measure and bin these things, out of 20 for $60 you would get 8 units that are over 10 mW. Binning the other 12, that'd be $7 a pop for a 10mW(+) 532 - not too bad if you have the time to test them one by one
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Old 09-02-2015, 02:45 AM #22
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Default Re: At under $3, what the hell

^but why bother when you can get overspec pens for 3$ a piece that aren't 10mw green and 80mW ir?
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Old 09-09-2015, 02:12 AM #23
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Default Re: At under $3, what the hell

Well, what did you get?
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Old 09-09-2015, 03:35 AM #24
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Default Re: At under $3, what the hell

Was it a pricing mistake? Its at 30$ for 10 now. Looks like I missed out
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