Jerry Sandusky -- The New PRISON Mug Shot

Jerry Sandusky cracked a goofy half-smile for the camera when he was transferred to a new correctional facility in Pennsylvania yesterday ... and TMZ has obtained Jerry's brand new mug shot.

The 68-year-old former Penn State football coach was moved from Centre County Jail to the State Correctional Institute at Camp Hill where he'll remain for the next few weeks, until he's placed into a state prison to serve out his 30-60 year sentence for raping several young boys.

Sandusky says he's innocent and the victim of a massive conspiracy. Nobody believes him.