Title:
ZOOM LENS, OPTICAL DEVICE, AND METHOD OF MANUFACTURING ZOOM LENS
Document Type and Number:
WIPO Patent Application WO/2010/007892
Kind Code:
A1
Abstract:
A zoom lens has, in order from the object side along the optical axis, a first lens group (G1) having a negative refractive power, a second lens group (G2) having a positive refractive power, and a third lens group (G3) having a positive refractive power. The zoom lens is configured such that the distance between the first lens group (G1) and the second lens group (G2) and the distance between the second lens group (G2) and the third lens group (G3) change when the magnification of the zoom lens is changed from a wide end state to a tele end state. The zoom lens satisfies a predetermined condition.
Inventors:
SHIMADA TOSHIYUKI (JP)
Application Number:
PCT/JP2009/062075
Publication Date:
January 21, 2010
Filing Date:
June 25, 2009
Export Citation:
Assignee:
NIKON CORP (JP)
SHIMADA TOSHIYUKI (JP)
SHIMADA TOSHIYUKI (JP)
International Classes:
G02B15/163; G02B13/18
Foreign References:
| JP2006139187A | 2006-06-01 | |||
| JP2004318097A | 2004-11-11 | |||
| JP2005258057A | 2005-09-22 | |||
| JP2001066503A | 2001-03-16 | |||
| JP2007272216A | 2007-10-18 | |||
| JP2006208890A | 2006-08-10 |
Other References:
See also references of EP 2312364A4
Attorney, Agent or Firm:
INOUE, Yoshio (1-4 Nihonbashi 3-chome, Chuo-k, Tokyo 27, JP)
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