Author Topic: Mystery thermal camera Germanium lens - anyone recognise it ?  (Read 2957 times)

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Online Fraser

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Mystery thermal camera Germanium lens - anyone recognise it ?
« on: August 14, 2016, 06:13:36 pm »
I bought a dinky little thermal camera lens some time back and have no idea from which camera it came. I bought the lens from the same seller who supplied my Ex SCOTT Fire Brigade thermal camera Raytheon 300A core, but the lens does not look to come from such a camera core.

The high quality Germanium lens elements are mounted in a smooth sided shell that does not have any threads for focus adjustment. It was either a sliding adjustment, as found on some FLIR Photon and Tau cameras, or it sat in another component that was adjustable  :-//

Does anyone recognise this little lens please ?

The diameter of the aluminium shell is 22mm with a depth of 10mm.

Fraser
 

Online Fraser

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Re: Mystery thermal camera Germanium lens - anyone recognise it ?
« Reply #1 on: August 14, 2016, 06:15:09 pm »
More pictures....
 

Online Fraser

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Re: Mystery thermal camera Germanium lens - anyone recognise it ?
« Reply #2 on: August 14, 2016, 06:16:49 pm »
More pictures....
 

Online Fraser

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Re: Mystery thermal camera Germanium lens - anyone recognise it ?
« Reply #3 on: August 14, 2016, 06:17:53 pm »
Final picture....

Fraser
 

Offline SeanB

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Re: Mystery thermal camera Germanium lens - anyone recognise it ?
« Reply #4 on: August 14, 2016, 07:19:33 pm »
Nice reflection of your conservatory there Fraser, you have a nice eye to getting those shots well composed.
 

Offline Refrigerator

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Re: Mystery thermal camera Germanium lens - anyone recognise it ?
« Reply #5 on: August 14, 2016, 07:42:05 pm »
Looks like it had some hand written numbers on it, would most likely be a serial number.
Hand written serial no. means short production runs.
My guess would be some expensive, non-consumer thermal camera, possibly military, the lens was maybe surplus or NOS.
I have a blog at http://brimmingideas.blogspot.com/ . Now less empty than ever before !
 

Offline Seekonk

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Re: Mystery thermal camera Germanium lens - anyone recognise it ?
« Reply #6 on: August 14, 2016, 09:00:30 pm »
I was doing some IR stuff years back at work and we bought a sapphire lens that cost thousands.  Seemed awful pricey for something that had bubbles in it. Years later I got the lens I bought at a surplus auction from the company in a box of stuff.  Never did find a use for it.
 

Online TurboTom

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Re: Mystery thermal camera Germanium lens - anyone recognise it ?
« Reply #7 on: August 15, 2016, 11:38:01 am »
Possibly might have been from one of those automotive night vision IR cams? I've got an autoliv NV3 "paperweight" cam here and the lens looks pretty similar.

Cheers,
Thomas
 

Offline Refrigerator

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Re: Mystery thermal camera Germanium lens - anyone recognise it ?
« Reply #8 on: August 16, 2016, 08:13:40 pm »
Put "Air-Spaced Achromatic Doublet" in google images, it comes up with a few similar looking lenses, also pictures of telescopes, which might suggest the lens could have come from a telescope ?
I have a blog at http://brimmingideas.blogspot.com/ . Now less empty than ever before !
 

Online Fraser

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Re: Mystery thermal camera Germanium lens - anyone recognise it ?
« Reply #9 on: August 16, 2016, 08:15:15 pm »
Thanks for all the suggestions folks  :-+

Fraser
 


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