| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress deformation of an optical element made of resin caused by absorption of light energy without increasing a manufacturing cost. <P>SOLUTION: An optical pickup device PU performs recording and/or reproducing of information using a luminous flux emitted from semiconductor laser oscillators LD1, LD2, LD3. An objective lens OBJ provided on an optical path of this optical pickup device PU includes at least base material resin including C-F coupling in a unit molecule, and functions as a beam shaper BE, collimate lenses COL1, COL2, or sensor lenses SEN1, SEN2. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
