| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a positioning device for a spectacle lens, which is capable of easily positioning a spectacle lens with high refractive power relative to a lens carrying jig. <P>SOLUTION: The positioning device for a spectacle lens includes: a light source; a light-transmissive member 61 provided with a reference mark S; a monitor 63 which is irradiated by the light source and includes a light receiving part 63A which receives detection light P transmitted through the light-transmissive member 61 and a progressive multifocal lens L; and a prism 8 which is disposed between the monitor 63 and the progressive multifocal lens L and changes an optical path of the detection light P transmitted through the progressive multifocal lens L, toward the light receiving part 63A of the monitor 63. In the case that the progressive multifocal lens L has high refractive power, the optical path of the detection light P transmitted through the progressive multifocal lens L is changed toward the monitor 63 because the prism 8 is disposed as an optical path changing member between the light receiving part 63A of the monitor 63 and the progressive multifocal lens L, so that the detection light P surely enters in the light receiving part 63A of the monitor 63. <P>COPYRIGHT: (C)2013,JPO&INPIT |
