| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compound objective lens forming mold for forming an optical surface with high accuracy at a relatively low cost and whose production process is simple. <P>SOLUTION: Since the compound objective lens molding metal mold is provided with core metal molds 61c and 63c having optical transfer surfaces OS1 and OS3 on which both optical surfaces OS1' and OS3' of a first objective lens part 91a constituting a compound objective lens 91 are formed, respectively, and is provided with core metal molds 61d and 63d having optical transfer surfaces OS2 and OS4 on which both optical surfaces OS2' and OS4' of a second objective lens part 91b are formed, respectively, the respective optical surfaces OS1', OS2', OS3' and OS4' at an optical information recording medium side of the respective objective lens parts 91a and 91b can be formed by core metal molds 61c, 61d, 63c and 63d of another body. Consequently, the arrangement including rotation positions, shapes, or the like of the respective optical surfaces OS1', OS2', OS3' and OS4' at the optical information recording medium side of the respective objective lens parts 91a and 91b can be individually adjusted. <P>COPYRIGHT: (C)2009,JPO&INPIT |
