How to mod lasers and Read power

I'm not an expert, but you might want to reconsider these steps for a green laser. I recently tried to apply just the pot mod to two Leadlights, the Ebay source of which was mentioned in this group for reliability. Two types arrived (I ordered a pair), one silver made in 2007 and the other black made in 2005.
The silver one wouldn't offer any power increase at all and the diode ended up dying eventually because the screwdriver touched the housing. Plus the module was very difficult to remove from the housing and couldn't be accessed just by popping off the switch. The black one modded a lot easier. It too had to be removed from the housing and the pot turned with the module OUTSIDE of the black casing. The removal was much easier though than with the silver model. However, even with the simpler circuit, the pot mod didn't increase its output that much. If I had been aware of the small power increase, I wouldn't have done even the pot mod on either of the lasers. The good news is that there are other brands available that do allow power increases (ie Leadlight clones which I had much more success with), but most of the clones DO NOT have an IR filter present and this can be bad for your eyes.

HTH,
Jon
 
I have the leadlights Green pointer in silver, I did the pot mod and used the below "Green LED" power meter. After my third or fourth one for friends

The correct LED is CRITICAL.

I used three Green Lasers unmodded, with "known" power ratings and used them to baseline the meter and LED power test rig 5mW, 10mW and 20mW (wish I had wider ranges). My LEADlight read ~8mW before the mod...

With the right LED (I had to buy 20 in a pack) I read 35.5mW after the mod and with some 'tuning' of power/lenses/filters and fresh betteries I now get 57.2mW.

I've also done several OEM black, ebay and just plain office type laserpointers each with some success of 7.5-27mW. Even a 7mW advance on a 5mW laser is 120+% improvement!

E
 
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