Unscrew the two #00 Phillips holding the image sensor in place. You can now remove the sensor bracket.

You can peel the shield to see what's behind it- a circuit board that services the sensor.

This is the camera's eyeball (specifically the retina): a 1/2.5" sized CCD sensor with a 5 mega-pixel resolution. Light is focused onto this glassy plane of semiconductors, which convert the information into electrical signals.