| 摘要 |
<P>PROBLEM TO BE SOLVED: To firmly fix a prism even while suppressing increase of the number of components and size. <P>SOLUTION: This imaging device 60 for an endoscope incorporated in a tip hard part 16a of the endoscope 11 includes an objective optical system 61, the prism 62, an imaging module 63, a lens barrel 64, and a metal holder 65. The prism 62 includes an incident surface 62a, an emitting surface 62b, and a slant surface 62c. The prism 62 is disposed in the rear of the holder 65, and the incident surface 62a is joined to the rear end face of the holder 65 with an adhesive. First and second recessed parts 62d, 62e of the slant surface 62c store first and second magnets 66a, 66b. The respective recessed parts 62d, 62e are formed outside an effective region 62f. The respective magnets 66a, 66b generate attraction force by magnetic force between the holder 65 and the magnets 66a, 66b in a state that the magnets 66a, 66b sandwich the prism 62 between the magnets 66a, 66b and the holder 65. The prism 62 is stuck to the rear end face of the holder 65 by the attraction force, and the prism 62 and the holder 65 are firmly fixed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
