Invention Grant
- Patent Title: Zoom lens and imaging device
- Patent Title (中): 变焦镜头和成像装置
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Application No.: US12031566Application Date: 2008-02-14
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Publication No.: US07672061B2Publication Date: 2010-03-02
- Inventor: Katsuhisa Tsutsumi
- Applicant: Katsuhisa Tsutsumi
- Applicant Address: JP Saitama-shi
- Assignee: Fujinon Corporation
- Current Assignee: Fujinon Corporation
- Current Assignee Address: JP Saitama-shi
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JPP2007-079231 20070326
- Main IPC: G02B15/14
- IPC: G02B15/14

Abstract:
A zoom lens comprises: a stationary group that is stationary at the time of variable power; and a variable power group, disposed on an image side of the stationary group, that makes a variable power operation by moving in an optical axis direction at the time of variable power, wherein the stationary group comprises: a first lens group including a negative meniscus lens and a positive lens and having a positive refractive power as a whole; and a second lens group, disposed on the image side of the first lens group, including: a negative lens group including a negative meniscus lens and a positive lens; and a positive lens group including at least one positive lens, in order from an object side, the second lens group having a positive refractive power as a whole.
Public/Granted literature
- US20080239504A1 ZOOM LENS AND IMAGING DEVICE Public/Granted day:2008-10-02
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