Invention Grant
- Patent Title: Macro lens and imaging unit
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Application No.: US14230519Application Date: 2014-03-31
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Publication No.: US10215999B2Publication Date: 2019-02-26
- Inventor: Takumi Matsui
- Applicant: Sony Corporation
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Michael Best & Friedrich LLP
- Priority: JP2013-099511 20130509
- Main IPC: G02B15/00
- IPC: G02B15/00 ; G02B27/64 ; G02B15/177

Abstract:
A macro lens includes: a first focus lens group having negative refractive power; and a second focus lens group arranged closer to an image side than the first focus lens group is arranged and having positive refractive power. At time of performing a focusing operation from an object at infinite to an object at a close distance, the first focus lens group travels toward the image side, and the second focus lens group travels with a traveling amount different from a traveling amount of the first focus lens group. The second focus lens group is configured of only one positive lens.
Public/Granted literature
- US20140334014A1 MACRO LENS AND IMAGING UNIT Public/Granted day:2014-11-13
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