| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize high attaching position deciding accuracy in a simple configuration and to easily secure an optical path by reducing bias portions. <P>SOLUTION: The holding structure 32 of the optical part is arranged at an optical path of an optical pickup, has optical functions of one or more selected out of transmission, reflection, refraction, and separation of light, and has constitution which comprises an optical part 31 provided with a convex part 43 projected in the direction previously decided and formed so as to have a slope or tapered part and a supporting member 40 in which a concave part 45 having a shape corresponding to a slope or tapered part of the convex part 43 formed at the optical part 31 is formed. The optical part 31 is supported at the supporting member 40 so that the convex part 45 is engaged with the concave part 45 of the holding member 40. In such holding structure 32 of the optical part, as the convex part 43 can be utilized for a positioning member, high attaching position deciding accuracy can be kept in a simple configuration, and the bias portions can be reduced. <P>COPYRIGHT: (C)2004,JPO |
