Old 05-10-2010, 10:13 AM #1
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Default "Open Can" 390mW 10X Violet "Pen"

...As the title states...

If you want to skip the commentary, the link to pictures is near the bottom!

I've finally completed the >300mW violet pen I have been planning for the past couple months. I finally received the diode and here it is.

During the harvesting process, I must have put pressure on the "can" because once the diode was loose, I noticed a crack in the window. I had to carefully remove it... I was happy to discover that it survived surgery with no damage whatsoever.

This little laser is less than the length of a leadlight and roughly the same diameter.
It is powered by AAA size batteries (NiMH 1.4V per cell), driven by a V5 Flex, and houses the diode from an LG 10X Blu-Ray disc writer.
The lens used is the 405-G-1 from Jayrob.

It features a click-on/click-off forward clicky switch in the battery cap and a 405nm anti-reflection coated window in the aperture. It is o-ring sealed for resistance to humidity (not fully water resistant) and is focusable. It is run happily at an 80% duty cycle with 100 sec on.
It is set at 390mW when warm and will peak at 405mW when cold

I believe that this diode lases at a shorter wavelength than my 12X. Although the power difference is less than 100mW, the 12X appears about 30% brighter and the 10X is a slightly "deeper" violet.

The construction was a little tedious, since there was very little space in the host. It is very solid with all-brass heat-sink. The module is press fit for good thermal conduction to the host.

This, to me, is the ideal pen laser. I think it is a great combination of portability, functionality, and power. And it looks great with my custom warning sticker.

I may make some design changes (this is a "prototype") and some minor improvements (including a copper heat-sink), since my original intent was to make a kit for this, but I haven't found a reasonably priced source for hosts like these. I have been searching for months.

Anyway... here are the pictures on my flickr:
10X Laser - a set on Flickr

Feel free to check out the other sets of my other lasers.
Thanks for looking.


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Last edited by RA_pierce; 05-10-2010 at 10:34 AM.
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Old 05-12-2010, 10:15 PM #2
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Default Re: "Open Can" 390mW 10X Violet "Pen"

Nice! That's a fairly long duty cycle for that little thing. I'd definetly like to have 300+mw in a pen.
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Old 05-13-2010, 12:59 AM #3
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Default Re: "Open Can" 390mW 10X Violet "Pen"

Nice Pen build. Sorry to hear about your window. It's happened to me once before too.
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Old 05-13-2010, 03:17 AM #4
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Default Re: "Open Can" 390mW 10X Violet "Pen"

Where exactly did you extract this laser diode from?
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Old 05-13-2010, 03:25 AM #5
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Default Re: "Open Can" 390mW 10X Violet "Pen"

Quote:
Originally Posted by Benm View Post
Where exactly did you extract this laser diode from?
This drive:
Newegg.com - LG WH10LS30K 10X Blu-ray Burner - LightScribe Support - Bulk - Blu-Ray Burners
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