| 摘要 |
A convex portion is provided on the objective side of a solid immersion lens so as to protrude toward an optical recording medium and a difference-in-level portion or a concave portion is provided at least on a part of this convex portion. Then, there are provided a solid immersion lens for satisfactorily holding the bonding state of a lens holding member, a focusing lens using this solid immersion lens, an optical pickup apparatus, an optical recording and reproducing apparatus and a method of forming a solid immersion lens.
|
