| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable accurate focusing operation to be performed without causing displacement of the axes of an accessory part and a lens barrel. <P>SOLUTION: In an accessory attaching/detaching mechanism for a lens device, an engaging part 44 which is provided on the outer peripheral surface of a barrel side mounting part 40 cylindrically protruded and formed at the front end 4 of a lens barrel 4 and a locking claw 66 which is provided on the inner peripheral surface of an accessory side mounting part 60 cylindrically protruded and formed at the rear end of an accessory part are locked so that the accessory part is mounted on the front end of the lens barrel 4. The accessory part is an auxiliary lens with a metal lens frame 100 and a resin cylinder part 62. On the inner peripheral surface of the accessory side mounting part 60, a protrusion 120 projecting inwardly along the circumferential direction is provided and integrated with the lens frame 100. The protrusion 120 abuts on the outer peripheral surface of the barrel side mounting part 40 when a radial external force acts on the accessory side mounting part 60. <P>COPYRIGHT: (C)2012,JPO&INPIT |
