发明名称 |
COMPOUND LENS AND MOLDING DIE THEREFOR |
摘要 |
PROBLEM TO BE SOLVED: To provide a compound lens having configuration with which a plurality of lenses can be fitted to each other and can be positioned at prescribed relative positions without causing load worsening assembly accuracy in an optical axis direction and a direction orthogonal to the optical axis direction and to provide a molding die with which molding processing of the compound lens can be suitably performed. SOLUTION: The compound lens is constituted so that the first lens 2 and the second lens 3 are mutually assembled in an optical axis direction while regulating relative positions in an orthogonal direction by fitting a fitting inner peripheral surface 25 having a cross sectional shape of a line being parallel to the optical axis of a lens surface 22 in a first lens 2 and a fitting outer peripheral surface 33 having the cross sectional shape of a line being parallel to the optical axis of a lens surface 31 in a second lens 3 to each other with a clearance with which deviation amount of respective optical axes of the first lens 2 and the second lens 3 is within a range where desired optical performance can be obtained. COPYRIGHT: (C)2005,JPO&NCIPI |
申请公布号 |
JP2005258329(A) |
申请公布日期 |
2005.09.22 |
申请号 |
JP20040073150 |
申请日期 |
2004.03.15 |
申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
FUJITA MASARU;MOBARA KAZUTO |
分类号 |
G02B7/02;B29C33/30;B29L11/00;(IPC1-7):G02B7/02 |
主分类号 |
G02B7/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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