Is this laser focusable?

• Apr 2, 2011

• #1

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jellis1234

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I just ordered this module off ebay a few days ago.
150mW 532nm 3.7V-4.2V /Laser Diode Module/Green Laser (eBay item 260527267140 end time 17-Apr-11 02:47:27 AEST) : Business Industrial
Is it possible that this laser can be focused? also, would 2 AA batterys be fine to power this.
Thanks

 

• Apr 2, 2011

• #2

daguin

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It is NOT focusable.

You will need a single 3.7V rechargeable battery to power it at the full output

2 @ AA batteries is only 3V total. It wants a minimum of 3.7V

Peace,
dave

 

• Apr 2, 2011

• #3

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jellis1234

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Thanks Dave, is it possible to get a focusable lens that would fit?

 

• Apr 2, 2011

• #4

daguin

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AFAIK, you would have to make something or find a focusable host/housing that will hold that module

Peace.
dave

 

• Apr 2, 2011

• #5

Tech_Junkie

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Doesnt that front lens focus the beam??? I had one that was out of focus and tweaked that lens to get a tighter beam.

 

• Apr 2, 2011

• #6

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anselm

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If you bust away this drop of glue, you CAN turn the lens and adjust the focus.

It's just not as comfortable as having a nice focus ring for that purpose.

 

• Apr 2, 2011

• #7

weeba2kv

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I have that laser and no way i could remove the glu and mine really sucks yeh for the 30 dollars i never expected much from it anyway you have to be lucky to remove the glu and focus the lens ... good luck

 

• Apr 2, 2011

• #8

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You can heat the tip up to soften the glue. Just dont use a lighter. :undecided:

 

• Apr 2, 2011

• #9

weeba2kv

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Wouldn't that damage the crystals ? if it all gets to hot

 

• Apr 3, 2011

• #10

Tech_Junkie

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You dont bake it, LOL. Try a low heat source, like a hair driver or something.

 

• Apr 3, 2011

• #11

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anselm

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Or a very localized kind of heat, like the tip of a soldering iron.
Then finish it off wit a sharp knife.

 

• Apr 4, 2011

• #12

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jellis1234

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Thanks guys, I'm looking at building/ buying a decent quality module.

 

• Apr 4, 2011

• #13

Toke

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Epoxy glue tend to dissolve/soften around 70-90C, if it is some kind of locktite it can be cracked with the correct size screwdriver.
(That is my experience from cheap greens and hosts.)

The module is likely already focused to a nice beam.
Using that lens "on the go" is just not practical, perhaps it can be fitted into a zoom-amble host?

I have ideas for this one.
A12 Cree Zooming 3-Mode Convex Lens LED Flashlight with Clip(1*18650) $12.37 Free Shipping
Replacing the 18650 with a 16340 is likely to leave room for a green module.
You just have to figure out how to turn out a heatsink/sleve.