Invention Grant
- Patent Title: Superwide-angle lens system
- Patent Title (中): 超广角镜头系统
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Application No.: US14077758Application Date: 2013-11-12
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Publication No.: US09122040B2Publication Date: 2015-09-01
- Inventor: Tatsuyuki Onozaki
- Applicant: RICOH IMAGING COMPANY, LTD.
- Applicant Address: JP Tokyo
- Assignee: RICOH IMAGING COMPANY, LTD.
- Current Assignee: RICOH IMAGING COMPANY, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Greenblum & Bernstein P.L.C.
- Priority: JP2012-264253 20121203
- Main IPC: G02B9/04
- IPC: G02B9/04 ; G02B13/06 ; G02B13/18
Abstract:
A superwide-angle lens system includes a positive front lens group and a negative rear lens group, in that order from the object side, wherein the negative rear lens group serves as a focusing lens group that is moved in the optical axis direction when focusing on an object at infinity to an object at a finite distance. The following condition (1) is satisfied: 1.1
Public/Granted literature
- US20140153118A1 SUPERWIDE-ANGLE LENS SYSTEM Public/Granted day:2014-06-05
Information query
