Optical Pickup Device and Optical Disc Device

摘要

An optical pickup device 11 according to the present invention includes: a light source 1 that emits a light beam; a condensing element 5 for condensing the light beam toward an information storage medium 14 ; and a protruding member 101 , which comes closer to the information storage medium 14 than the condensing element 5 does when the condensing element 5 faces the information storage medium 14 . The protruding member 101 is shaped so as to gradually protrude toward the information storage medium 14 in a tangential direction 21 of the information storage medium 14 rotating.