| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the following problem: it has been difficult to readily form a protective film having a prescribed aspherical shape, with a high shape accuracy on a convex diffractive lens base material. Ž<P>SOLUTION: A method of manufacturing a diffractive lens having a protective film includes: a step in which a pad 1 having a convex shape is brought into contact with a printing plate 2 with paint held thereon and the paint is transferred from the printing plate onto the pad; and a step in which the pad on which the paint has been transferred is brought into contact with a lens base material 4 which is held on a holding member and on the surface of which a diffraction grating shape has been formed, in such a manner that the convex summit part 6 of the pad abuts on a position which is different from a point on the optical axis of the lens base material, so as to transfer the paint onto the lens base material again, wherein the above two steps are repeated several times while changing the position at which the convex summit part of the pad abuts on the lens base material or the holding member. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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