| 摘要 |
PURPOSE:To realize miniature and simple structure by fitting a couple of setting rings which rotate in the opposite directions around a lens barrel and by rotating both the rings up to a fixed-focus position when a finder protective cover is moved to a closed position. CONSTITUTION:When a finder protective cover 1 is moved to left, projections 1a and 5a are in contact with each other and the 1st setting ring 5 rotates countercloskwise against a spring 6. When the protective cover 1 is moved to the leftmost position, it is locked by a lock lever 4 to expose a finder window 2. Through the rotation of the settoig ring 5, the 2nd setting ring rotates clockwise via a pinion 10 and lever parts 13 and 14 separate from projections 17 and 18 of a focus ring 16. While the protective cover 1 is closed, lever parts 13 and 14 are close to each other and sandwich projections 17 and 18 from both the sides to stop a fixed-focus position. Thus, the structure is simplified and miniaturized. |
