Title:
ZOOM IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/129055
Kind Code:
A1
Abstract:
Provided is a zoom imaging device comprising a mount section 21, a zoom lens 22 for forming an image of light that enters from the mount section 21, and an imaging element 23 arranged in an image formation position. The zoom lens 22 comprises, in order from the object side, a first lens group G1 having a positive refractive power, a second lens group G2 having a negative refractive power, a third lens group G3 having a positive refractive power, a fourth lens group G4 having a negative refractive power, and a fifth lens group G5 having a positive refractive power. The fourth lens group G4 is a focus lens group. The zoom imaging device is characterized in that when magnification is varied from the wide-angle end to the telephoto end, at least the second lens group G2 and the fourth lens group G4 move and satisfy the following conditional expression (1): φL1 <φ3GL1.
Inventors:
TAKADA KEISUKE (JP)
Application Number:
PCT/JP2015/053641
Publication Date:
August 18, 2016
Filing Date:
February 10, 2015
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
G02B15/00
Foreign References:
| JP2005352183A | 2005-12-22 | |||
| JP2010197860A | 2010-09-09 | |||
| JP2006215257A | 2006-08-17 | |||
| JP2002136477A | 2002-05-14 | |||
| JPH05257054A | 1993-10-08 | |||
| JPH11125770A | 1999-05-11 | |||
| JP2001503159A | 2001-03-06 | |||
| JP2012083601A | 2012-04-26 | |||
| JP2012027262A | 2012-02-09 |
Attorney, Agent or Firm:
SAITO Keisuke et al. (JP)
Keisuke Saito (JP)
Keisuke Saito (JP)
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