| 摘要 |
PROBLEM TO BE SOLVED: To provide a doublet free from damage on the lens surface and excellent in optical performance. SOLUTION: By forming a 1st lens side cylinder part 7 having a 1st lens side inclined surface 8 at a position corresponding to a 2nd lens 3 at the outer periphery part other than the lens surface of a 1st lens 2, forming a 2nd lens side cylinder part 13 having a 2nd lens side inclined surface 14 at a position corresponding to the 1st lens 2 at the outer periphery part other than the lens surface of the 2nd lens 3 and fitting the cylinder parts 7 and 13, the inclined surfaces 8 and 14 are brought into contact with each other. COPYRIGHT: (C)2005,JPO&NCIPI
|
