Thermography Camera 30 degree tilt weather cover

This is a lens attachment to protect thermal cameras against environmental effects, e.g. rain or dust. The frontal surface is tilted by 30 degree, so that the camera does not get thermal image reflection from its own sensor. The frontal surface should be covered by stretch foil (Celophan).

There are two variations: the larger one 74mm, should fit onto the Infratec VARIOCAM HD standard lens, while the smaller version should fit on a Infratec Head camera.

One can doublecheck, the diameter is printed in the the original protection cover inside.
I propose to print with no infill, to have better thermal insulation, since otherwise the infill pattern might cause miniscule reflection patterns.

I have not printed them yet, nor tried them yet.
http://www.infratec.de/en/thermography/infrared-camera.html