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Old 09-09-2010, 02:28 AM #1
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Default 445nm Star tipped 500mW PEN

I have 2 of these diffraction grating laser pens. They are fixed focus. Take the tip off and you have a regular laser. One has a tiny bit of side splash (like a 405-G-1 lens) the other has some cloudiness around the spot. I am selling these for $125 each shipped. Thanks for looking. Oh yeah, they run on GROOVE drives, 2 10440 unprotected rechargeables (included), and have an aixiz glass 445nm lens.




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Old 09-09-2010, 02:30 AM #2
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Default Re: 445nm Star tipped 500mW PEN

I'm interested...can I see a pic of the pen host?

PM sent
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Old 09-09-2010, 02:40 AM #3
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Default Re: 445nm Star tipped 500mW PEN

Here is the host that I purchased.

Focalprice.com offers 30mW Green Laser Pointer Pen (Black) ,discount 30mW Green Laser Pointer Pen (Black),30mW Green Laser Pointer Pen (Black) products,low price 30mW Green Laser Pointer Pen (Black),cheap 30mW Green Laser Pointer Pen (Black),30mW Gre
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Old 09-09-2010, 02:48 AM #4
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Default Re: 445nm Star tipped 500mW PEN

Payment sent for one.
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Old 09-09-2010, 03:07 AM #5
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Default Re: 445nm Star tipped 500mW PEN

1 sold. 1 available
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Old 09-09-2010, 10:54 PM #6
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Default Re: 445nm Star tipped 500mW PEN

i would like to buy this laser
i will pm you

this will be my biggest laser
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Old 09-10-2010, 07:37 AM #7
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Default Re: 445nm Star tipped 500mW PEN

What kind of duty cycle do these have? Cause I have a ~300mA pen that is at 65mW and it warms up quite quick in a pen host.
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- 150mW 405nm - DX 4171 host with Jayrob heatsink
- 115mW 405nm - Micro Chrome
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- 65mW 445nm - Jayrob chrome pen host (Link)
- 1+ Watt 445nm DTR NDB7875 in Mohrenberg side-clicky host (Guidesman) + heatsink
- 2+ watt 465nm DTR NUBM07E 510 threaded 22mm module
- 180mW 520nm DTR PLP520-B1 w/Jayrob heatsink in SolarForce L2T host
- 170mW 532nm - WL Evo (dead)
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Old 09-10-2010, 03:16 PM #8
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Default Re: 445nm Star tipped 500mW PEN

There is likely something wrong with your laser. Not necessarily defective....It's probably turning the energy into heat rather than light output. This could be due to the fact that you are teetering on the lasing threshold. Not sure though. Are you using a flex? Try using a linear driver for your next pen build. The GRV2 is the way to go for a pen IMHO
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Old 09-11-2010, 07:00 AM #9
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Default Re: 445nm Star tipped 500mW PEN

These diodes are horribly inefficient at lower powers. Which is why it takes about 300mA to get 65mW.

Jay and Dave have driven the diodes at 275mA and have gotten powers between 50-75mW depending on their setup (lenses and whatnot).

Bottom line is, these diodes were not made for lower mW outputs, they were deigned for much higher currents. So the efficiency is pretty bad for lower outputs. My diode is no different than any other XJ-A140 diode from the information provided by other members here.

And I am using a rkcstr driver.
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- 150mW 405nm - DX 4171 host with Jayrob heatsink
- 115mW 405nm - Micro Chrome
- 100mW 405nm - Side button host

- 65mW 445nm - Jayrob chrome pen host (Link)
- 1+ Watt 445nm DTR NDB7875 in Mohrenberg side-clicky host (Guidesman) + heatsink
- 2+ watt 465nm DTR NUBM07E 510 threaded 22mm module
- 180mW 520nm DTR PLP520-B1 w/Jayrob heatsink in SolarForce L2T host
- 170mW 532nm - WL Evo (dead)
- 120mW 532nm - WL Fusion (dead)
- 50mW 532nm - Classic CNI pen

- 150mW 650nm - WL Chrome Pulsar
Plus various other low power reds, greens and violets.

Last edited by leukoplast; 09-11-2010 at 07:02 AM.
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Old 09-15-2010, 05:19 PM #10
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Default Re: 445nm Star tipped 500mW PEN

well i prchased the last one guys i will put up a review an some shots ofcourse when it arrives.
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Old 11-14-2010, 08:10 AM #11
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Default Re: 445nm Star tipped 500mW PEN

i love this laser
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Old 11-14-2010, 08:53 AM #12
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Default Re: 445nm Star tipped 500mW PEN

Looking good!
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