sure. generally it's 2mm thick optical glass that's typically a 2" or
3" square piece and you'll need to cut it to fit the camera.

Seems straightforward (notice the absence of the term "simple").

Can you give a URL for such a piece?

The proper thickness of the replacement glass should be...? Should it be the
same thickness as the filter removed from the imager?

Thanks,
--
DaveC

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