Enclosure options?

This topic contains 6 replies, has 6 voices, and was last updated by Profile photo of Yuki Yuki 2 months, 3 weeks ago.

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    Profile photo of Kevin


    I know that many materials which are transparent to visible light do not pass LWIR.

    Anybody have suggestions for a good option for an enclosure that will hold a Pi along with a FLiR Dev Kit with Lepton module? Perhaps a case or window made from HDPE would work?

    Ultimately I’m looking for a solution to provide a degree of protection against dust and the like, not necessarily weather-tight.


    Profile photo of Belsin


    Hi Kevin,

    For ideas on what materials would make a good window for the Lepton, you could check Section 11 from the Lepton Data Brief.

    Here’s a snippet:
    “Common materials for LWIR windows include silicon, germanium, and zinc selenide”

    – Belsin


    Profile photo of Kevin


    Good info, but I’d suspect that a reasonable size window made out of any of those materials might be outside of a hobbyist budget.

    For now, I’m using a section of the cling-wrap from a gas station egg salad sandwich. Got the idea here.


    Profile photo of Cal Loo
    Cal Loo


    Yep, that’s gonna be a LOT less expensive. I’m interested to hear how that works out for you Kevin, good luck!



    Profile photo of Cullen


    I’ve also discovered that the stiff plastic used to store photo paper is mostly thermally transparent. I did a couple quick tests and even 3-4 sheets bundled together allow most of the IR through.


    Profile photo of Thomas



    good stuff is the proof windows from a motion detector.
    You can it warm up and press a thin film.

    Not for outdoor, in case of rain, poison can develop:
    You use 2 ZnSe Laser lens with the same focal length, that’s an enlargement of 1.
    Or 2 with different focal length for a telelense.



    Profile photo of Yuki



    Has there been any new developments on more accessible lens to use for the flir lepton dev kit as a transparent protective enclosure?

    2 ZnSe lens sounds like it will take up a lot of space.

    any other recommendations?

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