| 摘要 |
PURPOSE:To make an optical pick-up small by forming a magnetic circuit member to the shape to avoid the plate spring for supporting a bobbin. CONSTITUTION:Magnetic circuit members 11 and 12 are formed in the same fan-shaped manner so as to be able to avoid the bridge part B of the plate spring 4 and a plate spring 13 which fit movably a bobbin 2 to a housing 6, and arranged facing to the inside of an opening part 6b of the housing 6 while the length-wise direction of the plate spring 4 is sandwiched. Thus, the members 11 and 12 are formed to the shape to avoid plate springs 4 and 13, and therefore, the plate spring 13 can be positioned to the same height as the members 11 and 12, and consequently, the plate spring 13 can be fitted almost to the lower edge part of the bobbin 2. For that reason, the interval between the plate springs 4 and 13 can be shortened almost up to the thickness of the bobbin 2, and therefore, the height size of the objective lens driving part of the optical pick-up can be reduced and the optical pick-up can be made smaller.
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