发明名称 LENS SYSTEM
摘要 PROBLEM TO BE SOLVED: To provide a lens system which can reproduce the same angle-of-view size (focal length) as that in storing a preset position by preset execution regardless of a difference in extender magnifications by taking the difference in the magnifications of the extender in storing and executing the preset position relating to zoom into consideration. SOLUTION: When a CPU 18 of the lens system is given an instruction for the preset position memory from a controlling element 16, the CPU acquires the zoom position and extender position of a photographic lens 10 of this time and stores the same into a memory 20. When the CPU is given an instruction for the preset execution from the controlling element 16, the CPU determines the zoom position for reproducing the focal length in storing the preset position in the present extender position based on the zoom position and extender position in storing the preset position stored into the memory 20 and moves the zoom lens ZL to this position. COPYRIGHT: (C)2003,JPO
申请公布号 JP2003270514(A) 申请公布日期 2003.09.25
申请号 JP20020073812 申请日期 2002.03.18
申请人 FUJI PHOTO OPTICAL CO LTD 发明人 MIZUMURA HIROSHI
分类号 G02B7/08;G02B7/10;(IPC1-7):G02B7/08 主分类号 G02B7/08
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