LA Hover Bikes found the best approach is to break the lens and remove the pieces. In theory the lens could be popped out. The factory uses a lens adhesive that does not release by heat. Alternatively, Life after 40 used a small screwdriver to pry out the lens.

A Dremel cutting wheel can be used to score the glass. The "dome" shape of the glass makes it difficult to crack.

Take care not to scratch the window covering the imager. Control the break, control overtravel, or overtravel excentric of the central window.

The window is not in the focal plane. Small scratches on the window are spread over the image and cause generally reduced clarity rather than defined spots or lines on the image.