| 摘要 |
PROBLEM TO BE SOLVED: To confirm a rotational angle by making a coupling part between a camera main body and a lens part rotatable and forming the outer diameter of the coupling part to be small. SOLUTION: At a connection part 7 between the camera main body 1 incorporating a CCD element and a lens part main body 2, a through-hole 10 on the camera main body 1 side and a circumferential groove 12 on the lens part 2 side are rotatably connected through a steel ball 11 and a sleeve 14. An origin 17 is displayed on the camera main body 1 side at the coupling part 7 and angle scales 19 are displayed on the lens part main body 2 side at the coupling part 7, so that the rotational angle can be confirmed. By disposing an O-ring 22 between the coupling parts 7, the rotational angle is fixed by the frictional resistance of the O-ring 22.
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