Refocus optical mouse. Really?

Question

Mouse

At home I work on a table on which glass is installed. Sometimes you need to cut something, something else. I hate rugs, now I use a sheet of black paper from the IKEA set as it, pressing it with something so that it does not crawl. Under the glass - a matte motley surface. I think it might be possible to somehow refocus the mouse so that it hits not on smooth glass, but a few millimeters lower, resting on the table surface.
I allow options both on the current mouse and on the new one (if, for example, someone has already come up with a mouse with custom focus).

Answer 1

Laser mice handle glass surfaces.

Answer 2

But what about the refraction of light?

Answer 3

Calculate the parameters of the optics of the standard mouse lens. Then recalculate the focal length taking into account the thickness of the glass and its refractive index. After that, install an additional lens with the desired parameters, or replace the standard one. Formulas can be found in any textbook on optics. All business.