| 摘要 |
PROBLEM TO BE SOLVED: To improve operability for attaching a lens hood with a simple constitution. SOLUTION: Two bayonet pawls 12, a front side small diameter part 11a and a rear side large diameter part 11b are formed on the outer peripheral surface 11 on the leading end side of a lens barrel 10, and the level difference part 13 is formed at the same level as the front surface of the bayonet pawl 12. 1st and 2nd notched parts 22a and 22b for inserting two bayonet pawls 12 formed on the lens barrel 10 and 1st and 2nd bayonet grooves 23a and 23b communicating with the notched parts are arranged on the inner peripheral surface on the trailing end side of the lens hood 20, and also, a link-like contact part 24 coming into contact with the level difference part 13 formed on the lens barrel 10 is arranged all around the periphery of the lens hood 20. By providing the guiding parts all around the inside diameter part of the lens hood 20 and the outside diameter part of the lens barrel 10 in such a way, the operability for attaching the lens hood is drastically improved.
|
