Old 08-30-2013, 07:41 PM #1
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Default Ridiculously cheap lasers

I've been looking on Aliexpress and seeing ridiculously cheap high power laser pointers such as this:

Free shipping 660nm 5000MW High power RED Laser Pointer Strike a match-in Laser Pointers from Office & School Supplies on Aliexpress.com

Is this a total scam?
Even a 1000mw pointer at this price would be a steal.


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Old 08-30-2013, 08:02 PM #2
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Default Re: Ridiculously cheap lasers

FWI, any time you see a handheld claim 5W, it's not true. there is a c mount red diode that can achieve such power, but in handheld it would be many, many times more expensive, plus I've never heard of a site that sells them, they'd need to be custom made
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Old 08-30-2013, 08:05 PM #3
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Default Re: Ridiculously cheap lasers

Scam total BS best red diode you can get is around 5watts and would be way more expensive
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Last edited by Blaster; 08-30-2013 at 08:06 PM.
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Old 08-30-2013, 10:06 PM #4
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Default Re: Ridiculously cheap lasers

These ads are placed by guys in china that have 28" peckers and are 12 feet tall.
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Old 08-30-2013, 10:14 PM #5
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Default Re: Ridiculously cheap lasers

Here is true 5W (5000mW) red diode:https://sites.google.com/site/dtrlpf...t-diodes-w-fac

notice how much just the diode costs? still need host, driver, etc.

quite a bit more than $37.28

not to mention, 5W could do a lot more than light a match. it could easily cut solder
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Host by Ehgemus NUBM44 450nm 6.8W @4.5A g lens
Host by Ehgemus M462 462nm 1.5W @1.2A g lens
Dominator NUBM07E 465nm 4.3W @3.5A g lens
L2P Nichi@ NDG4216 515nm 110mW @ .35A
501B by Blord osr@m PL520 520nm 95mW @.3A g lens
PL-E pro from Jetlasers nichi@ NDG7475 520nm 980mW, 730mW w/ 10X BE

Lasermax Genesis sight 532nm 5mW
RPL from Optotronics 532nm 450mW

Spartan from Dragonlasers 589nm 50mW
501B HL63133DG 638nm 210mW @.3A g lens
501B Ocl@ro HL63193MG 638nm 960mW @1.3A g lens

501B by Blord LPC 826 660nm 325mW @?A g lens
PL660 from Laserbtb 660nm 1020mW

LPM
DL matrix and fan transmission gratings

laser powers in sig are about 20 seconds into duty cycle, not peak powers

http://laserpointerforums.com/f39/co...her-94720.html

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Old 08-30-2013, 10:46 PM #6
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Default Re: Ridiculously cheap lasers

A few weeks ago I bought a 1W 447nm for $33.60 (free shipping) on AliExpress. Turned out to be 25mW-50mW (maybe 100mW?) 405nm. On the other hand, it's a focusing laser and can burn stuff. It's close enough to uv that it can double as a uv flashlight. And finally, it came with an Ultrafire 18650 rechargeable lithium-ion battery with protection circuit, a $20 value.

On the other hand, there are people here at LPF who make the real thing, guaranteed. Hobby-built, but by people who are deadly serious about lasers.

The Chinese guy who sold me the AliExpress thing probably didn't know the difference between 405nm and 447nm and wouldn't believe the difference was important if you tried to explain it to him. He probably doesn't know what a milliwatt is, or the difference between a milliwatt of output versus a milliwatt of input. All he knows is that semi-literate American teenagers are buying his product.

see: http://laserpointerforums.com/f52/re...0-a-84786.html
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Old 08-30-2013, 11:31 PM #7
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Default Re: Ridiculously cheap lasers

Where can i get some higher power than 500mw red diodes?
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Old 08-30-2013, 11:39 PM #8
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Default Re: Ridiculously cheap lasers

Quote:
Originally Posted by DJStubbs View Post
Where can i get some higher power than 500mw red diodes?
Please use the search feature. This was posted above:
Quote:
Originally Posted by Shakenawake View Post
Here is true 5W (5000mW) red diode:https://sites.google.com/site/dtrlpf...t-diodes-w-fac

notice how much just the diode costs? still need host, driver, etc.

quite a bit more than $37.28

not to mention, 5W could do a lot more than light a match. it could easily cut solder

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Old 08-31-2013, 01:52 PM #9
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Default Re: Ridiculously cheap lasers

Quote:
Originally Posted by Lethere Belight View Post
These ads are placed by guys in china that have 28" peckers and are 12 feet tall.
So that's why their lasers are rated way more than the actual output ha ha ..
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95 mW 405nm custom 501b
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125 mW 405 nm focus-able 501b
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705 mW 405 nm focus-able 501b G2 lens

865 mW 445 nm Kryton Groove
1130 mW 450 nm focus-able custom
1175 mW 450 nm focus-able S4

1375 mW 445 nm WL ARCTIC S3
2.3 watt 445 nm G2 -Cree Q5
3.1 watt +Adj 445 nm Blitzbuck V3.1 9mm SS Survival host

95 mW 532nm custom focus-able
110 mW 532 nm S4 host
125 mW 532 nm SD 305A x 2
135 mW 532 nm SD 301 focus-able x2

135 mW 532 nm focusable laser SD 303 x2
175 mW 532 nm custom focus-able

494 mW 532 nm O like Crown*
100 mW 589 nm
PGL III C
115 mW 635 nm custom C6 host
800 mW 635 nm Hotlights host G1 lens

155 mW 645 nm custom 501b host
160 mW 650 nm focus-able C6 host
255 mW 650 nm SD301
280 mW 650 nm SD302
260 mW 660 nm custom C6 host
505 mW 660 nm custom C6 host
45 mW 650 red and 114 mW 532nm multi laser
350mW 830 nm IR custom C6 focus-able
Another
4 dozen plus 5 mW to 160 mW in all colors Way overspec ebay pens
LaserBee 3.7W USB Laser Power Meter

Last edited by Blaster; 08-31-2013 at 01:53 PM.
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Old 08-31-2013, 09:20 PM #10
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Default Re: Ridiculously cheap lasers

That gets 200mw AT MOST! Plus it is a 660 nm laser. It will NOT be 1w
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Old 09-01-2013, 08:11 AM #11
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Default Re: Ridiculously cheap lasers

Do you really need to ask on the forum whether this kind of deal is a scam?

Use your head! Use the search function and figure this stuff out yourself. Stop wasting everybody's time with these kinds of stupid posts.
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