| 摘要 |
PROBLEM TO BE SOLVED: To provide an imaging optical system which does not easily generate a flare and in which the curability of an ultraviolet curing type adhesive is excellent. SOLUTION: The imaging optical system 102 comprises an imaging element 154 with a light receiving surface, cover glass 156, a first optical member 158 and a second optical member 160. The cover glass 156 is disposed on the front surface of the light receiving surface of the imaging element 154. The first optical member 158 has a diaphragm 162 for shielding an unneeded luminous flux made incident along the direction of the optical axis O of an objective optical system unit 22a on one surface and the other surface is bonded to the cover glass 156 with the ultraviolet curing type adhesive A<SB>UV</SB>. The second optical member 160 is bonded to one surface of the first optical member 158 with the ultraviolet curing type adhesive A<SB>UV</SB>. COPYRIGHT: (C)2008,JPO&INPIT
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