| 摘要 |
PURPOSE:To obtain an exchangeable lens for automatic focusing adjustment by constituting a lens body barrel with a fixed outer barrel constructed in a body with a body coupling part, an inner barrel rotatable to said outer barrel, and a lens barrel mounting an objective lens and movable to the outer barrel. CONSTITUTION:A mount 1 and an outer barrel 3 have been screwed up to a coupling member 2 to a body. On a decorative plate 4 screwed in the mount 1, a pin 72 for rotation of a AF plate 72a and a notch for protrusion of a diaphramg lever 10 are provided. Pins 9, 21 provided at a fixed part are activated to the body side with a spring and in the state shown in the drawing, a ring 6 for manual distance adjustment a MF plate 61 and a AF plate 72 are connected by a coupling plate 92 and a clutch pinion 91, an inner tube having a slot for leading is rotated by the ring 6, and a lens tube 8 arrested in its rotation by a key 31 is made to move. When the pins 9, 21 are displaced, a plate 72 becomes indepedent of the ring 6, to be controlled with only the pin 72a. |
