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Old 09-08-2016, 11:19 AM #1
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Default Anyone here have access to, or own a Laser Range Finder which uses IR?

If anyone here has access to a golfing LRF or Laser Range Finder which uses IR pulses could you please have someone step out 50-100 feet and take a short video or photographs of the pulses and post? I am very interested in this but can't buy one here in Iraq to check it out myself. I am interested in the pulsed IR technology for another project. Ideally, if someone had a camera with the IR filter removed who could do this for me, it would be exactly what I'm needing.


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Old 09-16-2016, 01:08 PM #2
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Default Re: Anyone here have access to, or own a Laser Range Finder which uses IR?

No one

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Old 09-16-2016, 01:09 PM #3
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Default Re: Anyone here have access to, or own a Laser Range Finder which uses IR?

Unfortunately not
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Old 09-16-2016, 03:01 PM #4
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Default Re: Anyone here have access to, or own a Laser Range Finder which uses IR?

There's a pdf here for building a short range one using an ir led, I don't know how similar it would be but it might provide some insight.

Homemade Infrared Rangefinder (Similar to Sharp GP2D120

This little toy actually triangulates, amazing.

http://www.societyofrobots.com/senso...pirrange.shtml

This is interesting, more pdf to download.

http://www.flir.com/cores/display/?id=56598

https://www.researchgate.net/publica..._AlgorithmCBDA
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Old 09-16-2016, 03:48 PM #5
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Default Re: Anyone here have access to, or own a Laser Range Finder which uses IR?

Here's some numbers someone was working with.




Theses a lot of cool tech behind these, but I don't think our camera refresh rate or frames per second is anywhere near what you would need to count the pulse rate or unique identifying pulse code but I could be wrong.

Lidar is some interesting reading too.
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Old 09-19-2016, 11:56 AM #6
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Default Re: Anyone here have access to, or own a Laser Range Finder which uses IR?

Thank you for finding that for me, I did some goggling and missed that. Today I found something interesting on YouTube, it's a pulsed 1064nm YAG into a KTP crystal, you can see some of the green flashes missing because the pulse width was so short the camera frames couldn't synch up properly and was missing them.

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Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

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Old 10-05-2016, 06:30 AM #7
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Default Re: Anyone here have access to, or own a Laser Range Finder which uses IR?

My samsgung memory camcorder can see 980nm with no issues.

set it to darkness for best results. One time it even picked up ir from a halogen i was running at low enough volts to not even see.

incan blacks spam it with ir.
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Old 10-06-2016, 04:37 AM #8
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Default Re: Anyone here have access to, or own a Laser Range Finder which uses IR?

Ihttps://www.google.com/search?client...k1.aWPkDxO3dxE
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Old 10-09-2016, 07:58 AM #9
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Default Re: Anyone here have access to, or own a Laser Range Finder which uses IR?

I have found sensitivity curves for common CCD cameras and above 1000nm, they drop off fast to only a small percentage of what they can detect at 400-800nm edit: and that is with the IR filer removed.
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Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

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Old 10-09-2016, 07:20 PM #10
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Default Re: Anyone here have access to, or own a Laser Range Finder which uses IR?

What about CMOS cameras? I have one i use to collimate IR lasers, but haven't tried anything in the 1064nm range. Even if they will work better in this wider wavelength, there is still the problem with frame repetition rate. Also, the CCDs used in spectrometers seems to work with these higher IR wavelengths.
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Old 10-10-2016, 01:36 PM #11
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Default Re: Anyone here have access to, or own a Laser Range Finder which uses IR?

I will research those possibilities, thanks!
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Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

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Old 10-27-2016, 07:42 AM #12
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Default Re: Anyone here have access to, or own a Laser Range Finder which uses IR?

Quote:
Originally Posted by Alaskan View Post
I have found sensitivity curves for common CCD cameras and above 1000nm, they drop off fast to only a small percentage of what they can detect at 400-800nm edit: and that is with the IR filer removed.
mine sees 980 in a bright room and it sees 405 much brighter and more like 445nm

it has a f/2.8 with no zoom and it zooms ten times.


it can even autofocus on my 980 or my 808 which has no lens but is atleast 1.5w.
__________________
Chrome 12x 405nm pen @ 475mw by Ra_pierce
~30mw newish 532nm Pen
~100mw IQS 532nm Pen
50mw 660nm DX pen
"5mw" overspec IQS Blu-ray does around 50mw
Spartan 589nm 50mw likely higher no lpm to test but skin feels warm.
3.107 watt 445nm zero laser
473nm labby peak at 34 mw
808nm over a watt from a 400mw green that came loose and lost the crystal set
980nm with weak cyan line focousable
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