Invention Grant
- Patent Title: Lens system and optical device having the same
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Application No.: US11226329Application Date: 2005-09-15
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Publication No.: US07133221B2Publication Date: 2006-11-07
- Inventor: Akria Harada
- Applicant: Akria Harada
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2000-140119 20000512
- Main IPC: G02B9/14
- IPC: G02B9/14
Abstract:
A lens system has a plurality of lenses, a stop, and a diffractive surface, the entire lens system moves during focusing, and the lens system satisfies the condition of β≧0.5, where β is a maximum photographic magnification.
Public/Granted literature
- US20060077569A1 Lens system and optical device having the same Public/Granted day:2006-04-13
Information query
