| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lens barrel that enables a lubricant to be easily replenished without requiring disassembly by so installing a linking member for linking a manipulating ring rotatably arranged on an outer circumference of a fixed barrel and power transmission members arranged within the fixed barrel to transmit the power of the manipulating ring as driving power for optical system components as to expose grooves, formed in the outer circumference of the fixed barrel to allow depositing of the lubricant, from an engaging hole of the manipulating ring with which the linking member is engaged. <P>SOLUTION: A zoom ring 42 is arranged on an outer circumference of a central fixed barrel 12 of a lens barrel, within which a cam barrel 30 is arranged, a drive pin 70 screwed on to the cam barrel 30 penetrates a long groove 72 of the central fixed barrel 12 and is engaged with a long hole 80 of the zoom ring 42. The long hole 80 is extended in an optical axis direction to a position where grooves 100 and 102 for grease deposition, which are formed in the outer circumference of the central fixed barrel 12, are exposed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
