Author Topic: Need help with LWIR/MWIR optics  (Read 1096 times)

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Offline ArsenioDev

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Need help with LWIR/MWIR optics
« on: October 14, 2018, 10:12:27 am »
Hey there, long time lurker of this forum.
I recently acquired a bunch of the thermopile arrays that the cheapo chinese thermal cameras use and am at wits end with trying to get the cheap ZnSe and surplus aspheric Ge lens elements to work. Does anyone have a good source for cheap(i'm talking super cheap, <$100 or so) optics? I'm also looking to get some M10 optics for when I get my hands on the Sofradir Micro80 FPAs in the next month but have been coming up empty with where to get these. Any and all help is greatly appreciated.
 

Offline Bill W

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Re: Need help with LWIR/MWIR optics
« Reply #1 on: October 15, 2018, 09:24:12 am »
I have 15mm f/1 and 18mm f/0.7 focal length Ge lenses available inside that price range.  These were designed for older detectors around 50┬Ám pitch 320x240 or 20mm diagonal.  GBP40

They are 3 element spherical designs, but have a good correction over the field when used as a complete assembly.

http://www.fire-tics.co.uk/spares.htm

(Hope this is not too close to advertising....)

regards
Bill

Offline ArsenioDev

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Re: Need help with LWIR/MWIR optics
« Reply #2 on: October 16, 2018, 12:24:20 am »
Bill, got any good resolution pictures of their mounting hardware with scale objects? And how much would shipping run to the eastern USA say, VA?  Cheers
 

Offline Bill W

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Re: Need help with LWIR/MWIR optics
« Reply #3 on: October 16, 2018, 07:05:40 am »
I can dig out interface drawings next week.  The fixture is by the 4 screws in the corners of the plates that you see in the image.
Meanwhile a rough idea of scale is the 15mm diameter front element.
The plate is about 80 x 40mm.

regards
Bill


Offline Spirit532

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Re: Need help with LWIR/MWIR optics
« Reply #4 on: October 23, 2018, 09:42:01 am »
How did you get your hands on the Lapis arrays in such a small quantity?
They just ignored me and a few friends that inquired.
 

Offline Fraser

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Offline ArsenioDev

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Re: Need help with LWIR/MWIR optics
« Reply #6 on: October 23, 2018, 11:00:57 am »
Issue with willow is MOQ is 200 units
 

Offline Fraser

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Re: Need help with LWIR/MWIR optics
« Reply #7 on: October 23, 2018, 11:03:11 am »
That is a pity.

There appears to be a nice "demonstration" board. Presumably used at trade fairs.

http://www.symmetron.ru/suppliers/lighting/files/lighting/components/ir-sensors/infrared-array-sensor/ML8540%20IR_sensor.pdf

Fraser
« Last Edit: October 23, 2018, 11:06:54 am by Fraser »
 

Offline ArsenioDev

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Re: Need help with LWIR/MWIR optics
« Reply #8 on: October 23, 2018, 11:09:27 am »
I got five of these, will probably keep 3 and possibly have 2 up for trades on here in custom carrier boards
 

Offline Bill W

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Re: Need help with LWIR/MWIR optics
« Reply #9 on: October 24, 2018, 09:38:57 am »
The Argus 3 lens drawing.

Bill

Offline Fraser

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Re: Need help with LWIR/MWIR optics
« Reply #10 on: October 24, 2018, 09:49:19 am »
Very useful information. Thanks Bill 👍🙂

Fraser
 

Offline a59d1

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Re: Need help with LWIR/MWIR optics
« Reply #11 on: October 24, 2018, 10:47:40 am »
Is this for your atmospheric sensing work?  :popcorn:
 

Offline ArsenioDev

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Re: Need help with LWIR/MWIR optics
« Reply #12 on: October 24, 2018, 11:14:39 am »
Nope, thermal tinkering. Interesting that someone knows about my atmospheric work though lol
 


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