Extended light sources like LEDs close to the planar sheet of course couple to some TIR guided ray paths in the glass. But seeing far away objects like with a c

Extended light sources like LEDs close to the planar sheet of course couple to some TIR guided ray paths in the glass. But seeing far away objects like with a camera ... probably only those that are visible at larger angles to the plane normal. The camera is probably blind to the angular space close to the plane normal.