We disassembled a "door spy" (door peephole?) and used the lens - if memory serves me correct.. Keep in mind that the resolution was only 64x256 pixel (we used

We disassembled a "door spy" (door peephole?) and used the lens - if memory serves me correct.. Keep in mind that the resolution was only 64x256 pixel (we used one of four physical separate 64x256 bit arrays on the chip) so the lens quality did not really matter.