There are 4 versions of the enclosure. The Arudam V1 camera is used in all devices build from 2018, as the Arducam V2 part has become deprecated. You can distinguish between those two by having a look at the lense. The V1 has a big lense on top of it, the V2 only a very flat one.
The difference between the radiometric and non-radiometric versions is, that the non-radiometric setup also needs an external spot sensor. For the radiometric version, this cutout in the enclosure has been removed.
You can find those four versions in the corresponding folders:
ArducamV1_NonRadiometric: Made for the Arducam V1 Mini 2MP camera and the Lepton2.0 / Lepton3.0 non-radiometric sensor
ArducamV1_Radiometric: Made for the Arducam V1 Mini 2MP camera and the Lepton2.5 radiometric sensor
ArducamV2_NonRadiometric: Made for the Arducam V2 Mini 2MP camera and the Lepton2.0 / Lepton3.0 non-radiometric sensor
ArducamV2_Radiometric: Made for the Arducam V2 Mini 2MP camera and the Lepton2.5 radiometric sensor
The enclosure has been designed with Google Sketchup for a material thickness of 3mm. The standard enclosure is cut out of black acryl plastic by a laser cutting service.
Popular services are ponoko.com located in the USA and GB, formulor.de from Germany and seedstudio.com from China. The price for one case should be around 10€. You can also use a 3D printer to print out the case on your own, but in that case you have to adapt the 3D files for 3D printing, as they were designed for laser cutting.
You can download the free version of Google Sketchup here: https://goo.gl/GSqC8C Inkscape for editing the 2D SVG files can be loaded here: https://goo.gl/w8YHZN Use this plugin for Sketchup, to convert the 3D model to 2D: https://github.com/JoakimSoderberg/sketchup-svg-outline-plugin