Fitzpatrick, Cella, Harper & Scinto
Optical head device
 An optical head device includes an optical head body, a support shaft directly provided on the optical head body, an optical system holding member movably supported by the support shaft, an optical system held by the optical system holding member for directing a light beam supplied from the optical head body to an object to be irradiated, and drive means for moving the optical system relative to the optical head body. 
Canon Kabushiki Kaisha
G G
G11B G11B
inventional inventional
Toru Yasuo
Tatsuno Suzuki