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Yes, diffraction tips will do the job. Have just bought some from ebay thanks. Will also look at the dragon lasers link and buy some stuff from the ebay link too; it's great to try different sources. Thanks for the help guys. Tim

Well, these guys wanted to sell me a DOE (dot matrix) for over $140 and it was simply a small piece of plastic ! Pattern Generators for FLEXPOINT® Laser Modules - Laser Module Accessories - Laser Components USA, Inc. Better off buying another chinese jobby even if I have more green lasers than...

The piece I had came with a green laser pointer where one can twist the bezzle upon the end and one set of dots mingle with another set of dots to create patterns. I have no idea what the material is made from unfortunately, unlike the small round plastic lenses with grooves that create...

Is that the type that creates "cross hairs"? I have a few of those, I want to create a matrix of dots.

I managed to drop the wafer I had. It is a tiny, thin wafer that diffuses a laser beam and produces lots of dots. Does anyone know where I can source this diffuser type of material, please? Photos in photobucket here: Laser Diffuser Photos by rsidbn | Photobucket or maybe here: Laser Diffuser...

scientific test - sort of. So I let the laser pen rest for five minutes in two pieces with batteries isolated. Then re-assemble. Operate laser for 20 seconds and bright green dot gets dimmer and then disappears. Take batteries out for five mins and repeat - same results - strange. As for...

Yes, thanks. The sponge around the spring does seem to stop that happening. the strange thing is that I cannot leave batteries in my green lasers but I can in my red lasers. If I unscrew the green lasers, test the batteries, they are still 1.5V, so there appears to be no drain or short - I am...

Just tested it both the green pens. Yes, there is a short between spring and case. Any idea how I go about fixing that? The two are different designs and I aborted my first attempt at twisting the driver out of the casing because the switch was stopping rotation. EDIT - NO there is no short...

I have experienced this with green lasers bought from China. 5mW to 30mW pen types. If the batteries are left in overnight, the next day the laser does not work well (it is not as bright as usual). Also, if the laser is turned on for 1 minute, the laser loses power after 1 minute. Is this a...

Thanks guys. Excellent points.

Thanks for that. Yes, I did recognise the danger to me / the user, but not to wildlife, so you are quite right, not a good idea. Thanks.

I am helping an old chap secure his home from a nasty person. I have fitted CCTV for him. The cameras' IR illumination (LEDs) do not project that far. the cameras are triggered by motion detection, not PIR, so if the camera 'sees' a movement, then it will record it. Because the camers own...