IR filter applied directly to sensor as coating

[emCee]

I have access to a brand new Logitech c270 and have found that the IR filter is applied directly to the surface of the sensor itself.  This appears to be confirmed elsewhere online as well (astrophotography forums).

Can anyone confirm that the recommended eye cameras still have IR filters that can be removed in the versions now being sold?

As a secondary question, is it truly necessary to remove that IR filter?  ie, would the near-IR bands passing an intact IR filter and a visible light filter (exposed film) be enough to operate Pupil if additional IR illumination is provided? Webcam sensors can be seen to respond to IR LEDs, so stands to reason that at least some IR is getting through.

Thanks!

[in...@pupil-labs.com]

Hi,

I think this is a dead end. You will not be able to remove the coating and keeping the coating will give you bad tracking results. If you add the film you basically block all light and get a very noise useless image.

We use the Logitech B525 and we had never had any trouble with it.

Best,

Moritz