| 摘要 |
PROBLEM TO BE SOLVED: To make feeling in operation excellent, even in a tripod mount secondarily worked from a blank material by metal die casting. SOLUTION: The blank material is manufactured by metal die casting, an inner peripheral groove 14b engaged with a lens barrel body is formed inside an annular fitting portion 14a by secondary work such as lathe work, and a metallic annular sheet 15 is disposed in the inner peripheral groove 14b, so that a holding collar 13 attached to the lens barrel body 11 is brought into slide contact with the annular sheet 15 in the inner peripheral groove 14b. COPYRIGHT: (C)2009,JPO&INPIT |
