Gov. Jerry Brown has approved a state law aimed at tightening protections for child actors in Hollywood.

Assembly Bill 1660, authored by Assemblywoman Nora Campos, D.- San Jose, prevents registered sex offenders from representing minors working in the entertainment business and requires criminal background checks for managers, publicists, photographers and others with unsupervised access to young performers.

The legislation was drafted after a report last year that a convicted child molesters had been working on casting young actors in feature films.

“This measure establishes a system to prevent registered sex offenders from representing minors who are performing or seeking to perform in the entertainment industry,” Brown said Thursday in his signing message. “The program will commence after the Legislature appropriates the necessary funding from the fees that will be established under this bill and included int eh 2013-2014 proposed budget.”

Currently, agents and studio teachers have been subjected to fingerprinting and background checks. Hollywood trade organizations supported the bill.