I bought several cameras to go with my Eufy HomeHub 3 and door bell. One of the cameras is exposed outside to the elements and rain on the lense stops the camera working effectively. I decided to CAD this up using fusion360. It's printed in BambuLabs ASA.

Revision. Now at v2 as the top of the cowl was appearing “in shot”. This was causing the IR, in the dark, to reflect back into the camera and washing out the image.