Invention Grant
US08369022B2 Variable magnification optical system, image pickup device and digital apparatus
有权
可变倍率光学系统，图像拾取装置和数字装置
- Patent Title: Variable magnification optical system, image pickup device and digital apparatus
- Patent Title (中): 可变倍率光学系统，图像拾取装置和数字装置
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Application No.: US12782316Application Date: 2010-05-18
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Publication No.: US08369022B2Publication Date: 2013-02-05
- Inventor: Keiji Matsusaka
- Applicant: Keiji Matsusaka
- Applicant Address: JP Tokyo
- Assignee: Konica Minolta Opto, Inc.
- Current Assignee: Konica Minolta Opto, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Cozen O'Connor
- Priority: JP2009-121137 20090519; JP2010-100725 20100426
- Main IPC: G02B13/08
- IPC: G02B13/08 ; G02B3/00 ; G02B7/00 ; G02B9/00 ; G02B11/00 ; G02B13/00 ; G02B15/00 ; G02B17/00 ; G02B25/00 ; G02B15/14 ; G02B9/34 ; G02B13/16
Abstract:
A variable magnification optical system of the present invention and an image pickup device and a digital apparatus including this are provided with a four-component optical system of negative-negative-positive-negative arrangement, wherein a first lens group thereof includes only one negative lens as a lens having an optical power, and a third lens group thereof satisfies a conditional expression of 1.4
Public/Granted literature
- US20100295985A1 VARIABLE MAGNIFICATION OPTICAL SYSTEM, IMAGE PICKUP DEVICE AND DIGITAL APPARATUS Public/Granted day:2010-11-25
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