Invention Grant
US08547651B2 Image-forming lens, and camera device and portable information terminal device with the image-forming lens
有权
图像形成透镜，以及具有图像形成透镜的相机装置和便携式信息终端装置
- Patent Title: Image-forming lens, and camera device and portable information terminal device with the image-forming lens
- Patent Title (中): 图像形成透镜，以及具有图像形成透镜的相机装置和便携式信息终端装置
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Application No.: US13803262Application Date: 2013-03-14
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Publication No.: US08547651B2Publication Date: 2013-10-01
- Inventor: Takashi Kubota , Kazuyasu Ohashi
- Applicant: Takashi Kubota , Kazuyasu Ohashi
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2010-137482 20100616; JP2010-137492 20100616; JP2011-118460 20110526
- Main IPC: G02B9/08
- IPC: G02B9/08
Abstract:
An image forming lens consists of from an object side to an image side in the following order: a first group with a positive refractive power; an aperture stop; and a second group with a positive refractive power, wherein the second group includes, from the object side to the image side in the following order, a biconvex lens, a biconcave lens, a negative meniscus lens a convex surface of which faces the image side, a biconvex lens, and a positive meniscus lens a convex surface of which faces the image side.
Public/Granted literature
Information query
