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Products => Thermal Imaging => Topic started by: Uho on January 30, 2020, 09:53:45 am

Title: Flir T250 teardown.
Post by: Uho on January 30, 2020, 09:53:45 am

Flir T250 teardown. I shot a video about the device of the matrix module and the focus mechanism.
I shot a video about the device of the matrix module and the focus mechanism.
https://youtu.be/ajwUPUlNc0s

Title: Re: Flir T250 teardown.
Post by: Vipitis on January 30, 2020, 10:30:05 am

can you identify the motors used for shutter and focus? I am interested in how they are driven.

Title: Re: Flir T250 teardown.
Post by: Fraser on January 30, 2020, 10:52:49 am

Vipitis,

They will be Faulhaber coreless motors or similar high quality equivalents. Such motors are pretty much the standard for high end compact motor systems and they offer a large range of diameters, lengths and gearbox options.

https://www.faulhaber.com/en/home/ (https://www.faulhaber.com/en/home/)

Maxon is another brand of coreless motor commonly found in high end cameras.

https://www.maxongroup.com/maxon/view/content/product-overview (https://www.maxongroup.com/maxon/view/content/product-overview)

These types of motors are often modular in nature. The designer may choose a suitable electro-mechanical specification, diameter, length and options to integrate the motor into the design. The options often include compound gearboxes and position sensors. Excellent motors, but also quite expensive, as one might expect of such fine engineering.

The FFC shutter can be driven by a coreless motor or a rotary solenoid. I do not know which is used in the Txxx series.

Fraser

Edit: the term “brushless” crept into my comment above. I meant to say “Coreless”. Now corrected.

Title: Re: Flir T250 teardown.
Post by: Fraser on January 30, 2020, 12:00:37 pm

For anyone not familiar with coreless motors.....

https://www.motioncontroltips.com/what-are-coreless-dc-motors/ (https://www.motioncontroltips.com/what-are-coreless-dc-motors/)

Such motors offer the advantage of low inertia and fast response to inputs so are well suited to focus systems.

Fraser

Title: Re: Flir T250 teardown.
Post by: Uho on January 30, 2020, 12:05:54 pm

Servo is used for focusing. In my video, this is visible and most importantly audible. Fraser answered very well about motors.

Title: Re: Flir T250 teardown.
Post by: Fraser on January 30, 2020, 02:31:25 pm

Apologies, I commented before watching the video  :palm:

Seeing that servo comes as a surprise to me. Hopefully it contains decent mechanical components for longevity.

Fraser

Title: Re: Flir T250 teardown.
Post by: Uho on January 30, 2020, 02:48:50 pm

I think that motors are used for the shutter. So you wrote it right. The servo is working fine. The thermal imager was made in 2009.

Title: Re: Flir T250 teardown.
Post by: Vipitis on January 30, 2020, 04:03:37 pm

well it's two motors there. found something very similar looking in my cameras. Guess I will have to find the exact model number to figure out how to drive them.