Interesting (New?) Raspberry Pi Camera Microscope Lens

Just spotted this lens for the Pi HQ camera:

Also available with a stand:

Is this new? Has anyone used it before? Thoughts?

It does look as though it would be useful. I wonder what the resolution is, the pixel size will be about 1 micron with a 1.8x optical lens and 1.55 micron pixels on the HQ camera. It does not look as though the lens is big enough to give the NA required for that resolution.

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I am very interested in trying this. I wonder what would be involved in linking this camera to an objective.