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Well, I think they advertised .8mrad on a 5 or 10mw in 780 wl. We can probably make that divergence work to use more than one laser but I will have to call about the special build. Probably will order an off the shelf piece for now for testing and go from there.

These are for outdoor, overnight hour operation, 1mile from any homes. I don't see 5-10mw being a large concern. 50BMG? different story. I should add that we have people around that are more experienced than I with this. I just don;t want to waste company time on it. Thanks a bunch for...

I don't want to get into a legal debate on the issue. I think we have a few issues solved and/or found. I was going to run some calcs for watt density or energy/area to see how much will be needed at the sensor. Is there a calc floating around here by chance?

Halo, this is a private use item. Though I do understand the concerns and regs regarding the issue, these will be used cautiously on a large rural property. I don't think we will run into too much issue. Seems a long list of people on youtube already building burning lasers and all. We only...

Thanks! it seems most of the ones on egay do not have many specs other than power and wavelength. Would I be taking one of these apart to add an expander lens The dim light may not be an issue, especially as a first revision. Obviously you would have to be looking for it to see it anyway but...

My apology. My understanding was most of these small, low power lasers were actually glorified, focused LEDs. I have noticed a few beam expander lenses on egay. Not make specs on them which I think makes them worthless but curious if there are any USA resources that don't charge arm/leg for...

USA private use, outdoor installation. We own an engineering firm and machine shop so really only limited by lenses and better understanding of the subject. Not really educated on optics much. maybe some ignorance on LEDs but as I understand, the term "laser" is just an LED with an...

The optics side of this has proven quite a challenge because not many people sell reasonable optics for this stuff and if so, not enough information is provided to use them. Will acrylic lenses work for this or will it be quite an advantage to use glass?

We are still working on a security IR beam and need to focus a beam on an IR collector for switching. Actual power is not yet known but relatively low power if we can focus the beam reasonably at long distance. I am curious if an adjustable collimating lens will allow focus of the waist at...

Keeping in mind here that we will be targeting on an IR collector, I would not think it would take that much power to do 1000ft. I have not run any numbers yet and not sure what the glass will do. Just considering some observations of visible gun sight lasers. I would hope as long as the...

Thanks for the replies guys. Bluefan, I think the wavelength and power are still a bit in the air at this point. I am sure we can design a collecting circuit for nearly any wavelength so this is mostly a laser dependent project. I want to stay in the IR length range though so it stays...

Being new here, I will mention that our primary business is engineering and CNC machining but more or less looking to buy or build some IR lasers to be used for perimeter security. Probably bounce the beam over 1-3 mirrors before spotting on an IR collector. I experience with electronics and...