Invention Grant
- Patent Title: Imaging lens
- Patent Title (中): 成像镜头
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Application No.: US13168430Application Date: 2011-06-24
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Publication No.: US08824065B2Publication Date: 2014-09-02
- Inventor: Hisanori Suzuki , Shingo Watanabe , Ichiro Kurihara , Kazuo Matsuoka
- Applicant: Hisanori Suzuki , Shingo Watanabe , Ichiro Kurihara , Kazuo Matsuoka
- Applicant Address: JP Tochigi
- Assignee: Kantatsu Co., Ltd.
- Current Assignee: Kantatsu Co., Ltd.
- Current Assignee Address: JP Tochigi
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2008-327648 20081224
- Main IPC: G02B3/02
- IPC: G02B3/02 ; G02B9/08 ; G02B13/00 ; G02B27/00 ; G02B13/18 ; G02B27/42 ; G02B5/18
Abstract:
A concave surface is formed on an object side of a plastic lens of a one-piece construction, and a convex surface is formed on an image-point side thereof. The concave and convex surfaces are aspherical. A diffractive optical surface that exerts a chromatic dispersion ability is formed on the convex surface, and conditional expressions (1) 0.45
Public/Granted literature
- US20110255177A1 IMAGING LENS Public/Granted day:2011-10-20
Information query
IPC分类:
| G | 物理 |
| G02 | 光学 |
| G02B | 光学元件、系统或仪器 |
| G02B3/00 | 简单或复合透镜 |
| G02B3/02 | .具有非球面的（G02B3/10优先） |
