JP2016099396A5 - - Google Patents

Download PDF

Info

Publication number
JP2016099396A5
JP2016099396A5 JP2014233979A JP2014233979A JP2016099396A5 JP 2016099396 A5 JP2016099396 A5 JP 2016099396A5 JP 2014233979 A JP2014233979 A JP 2014233979A JP 2014233979 A JP2014233979 A JP 2014233979A JP 2016099396 A5 JP2016099396 A5 JP 2016099396A5
Authority
JP
Japan
Prior art keywords
lens
extender
refractive power
extender lens
focal length
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2014233979A
Other languages
Japanese (ja)
Other versions
JP2016099396A (en
JP6433259B2 (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2014233979A priority Critical patent/JP6433259B2/en
Priority claimed from JP2014233979A external-priority patent/JP6433259B2/en
Publication of JP2016099396A publication Critical patent/JP2016099396A/en
Publication of JP2016099396A5 publication Critical patent/JP2016099396A5/ja
Application granted granted Critical
Publication of JP6433259B2 publication Critical patent/JP6433259B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Claims (2)

  1. An extender lens group that changes the focal length range of the zoom lens by being inserted into and removed from the optical path of the relay lens group that does not move for zooming;
    The extender lens group is composed of a front group having a positive refractive power on the object side and a rear group having a negative refractive power on the image side, with the largest air gap between them.
    The L_IE the total length of the extender lens group, a distance between the principal points of the rear group and the front group HH, the average refractive index at the d-line of a lens having a positive refractive power included in the extender lens group Np, the extender lens Nn is an average refractive index with respect to d-line of lenses having negative refractive power included in the group, fm is a focal length of each lens included in the extender lens group (m = 1, 2, 3,...), When the focal length of the rear group is fN,
    0.22 <Nn-Np
    | Fm / fN | <10.0
    0.85 <HH / L_IE
    A zoom lens characterized by satisfying the following formula:
  2. An extender lens group that forms a part of the zoom lens and does not move for zooming, and changes the focal length range of the zoom lens by being inserted into and removed from the optical path of the relay lens group,
    The extender lens group is composed of a front group having a positive refractive power on the object side and a rear group having a negative refractive power on the image side, with the largest air gap between them.
    The L_IE the total length of the extender lens group, a distance between the principal points of the rear group and the front group HH, the average refractive index at the d-line of a lens having a positive refractive power included in the extender lens group Np, the extender lens Nn is an average refractive index with respect to d-line of lenses having negative refractive power included in the group, fm is a focal length of each lens included in the extender lens group (m = 1, 2, 3,...), When the focal length of the rear group is fN,
    0.22 <Nn-Np
    | Fm / fN | <10.0
    0.85 <HH / L_IE
    An extender lens group characterized by satisfying the following formula.
JP2014233979A 2014-11-18 2014-11-18 Zoom lens, extender lens group, and imaging device Active JP6433259B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014233979A JP6433259B2 (en) 2014-11-18 2014-11-18 Zoom lens, extender lens group, and imaging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014233979A JP6433259B2 (en) 2014-11-18 2014-11-18 Zoom lens, extender lens group, and imaging device

Publications (3)

Publication Number Publication Date
JP2016099396A JP2016099396A (en) 2016-05-30
JP2016099396A5 true JP2016099396A5 (en) 2017-12-21
JP6433259B2 JP6433259B2 (en) 2018-12-05

Family

ID=56076915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014233979A Active JP6433259B2 (en) 2014-11-18 2014-11-18 Zoom lens, extender lens group, and imaging device

Country Status (1)

Country Link
JP (1) JP6433259B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6631085B2 (en) * 2015-08-19 2020-01-15 株式会社シグマ Zoom lens
JP2018128520A (en) * 2017-02-07 2018-08-16 富士フイルム株式会社 Zoom lens and imaging device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101710621B1 (en) * 2009-11-20 2017-03-08 삼성전자주식회사 Lens system and image pickup apparatus having the same
JP5241779B2 (en) * 2010-07-26 2013-07-17 キヤノン株式会社 Zoom lens and imaging apparatus having the same
JP5759209B2 (en) * 2011-03-04 2015-08-05 キヤノン株式会社 Zoom lens and imaging apparatus having the same
JP5885525B2 (en) * 2012-02-09 2016-03-15 キヤノン株式会社 Teleside converter lens and image pickup apparatus having the same

Similar Documents

Publication Publication Date Title
JP2014130375A5 (en)
TW201612579A (en) Small form factor telephoto camera
TW201614312A (en) Optical image capturing system
EP3159726A3 (en) Zoom lens and image pickup apparatus including the same
TW201614308A (en) Optical image capturing system
TW201614309A (en) Optical image capturing system
JP2014199421A5 (en)
IN2012DE00189A (en)
JP2014052511A5 (en)
EP2988155A3 (en) Zoom lens and image pickup apparatus including the same
TW201614311A (en) Optical image capturing system
TW201612577A (en) Optical image capturing system
TW201614306A (en) Optical image capturing system
EP2693251A3 (en) Zoom lens and image pickup apparatus having the same
JP2017078763A5 (en)
JP2014044246A5 (en)
JP2016118737A5 (en)
JP2016075741A5 (en)
JP2013235060A5 (en)
GB201311444D0 (en) Zoom lens and image-pickup apparatus
JP2008170577A5 (en)
JP2016035538A5 (en)
JP2016099396A5 (en)
JP2013160944A5 (en)
JP2015138122A5 (en)