JP2001091833A5 - - Google Patents
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- Publication number
- JP2001091833A5 JP2001091833A5 JP1999266593A JP26659399A JP2001091833A5 JP 2001091833 A5 JP2001091833 A5 JP 2001091833A5 JP 1999266593 A JP1999266593 A JP 1999266593A JP 26659399 A JP26659399 A JP 26659399A JP 2001091833 A5 JP2001091833 A5 JP 2001091833A5
- Authority
- JP
- Japan
- Prior art keywords
- lens group
- lens
- focal length
- angle end
- zoom
- 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
Links
- 238000003384 imaging method Methods 0.000 claims 15
- 230000003287 optical Effects 0.000 claims 12
- 210000001747 Pupil Anatomy 0.000 claims 3
- 230000005499 meniscus Effects 0.000 claims 1
Description
第5レンズ群は、少なくとも1枚の正レンズと1枚の負レンズの接合レンズ又は空気分離型ダブレットと正レンズで構成することが望ましい。 The fifth lens group is preferably composed of a cemented lens of at least one positive lens and one negative lens or an air-separated doublet and a positive lens.
Claims (28)
2.0<f1 /fW <8.0 ・・・(1)
0.4<|f2 /fW |<1.0 ・・・(2)
0.3<f3 /fT345<1.2 ・・・(3)
0.6<|f4 |/fT345<5.0 ・・・(4)
0.5<f5 /fT345<4.0 ・・・(5)
ただし、
fW は、広角端における全系の焦点距離
f1 は、第1レンズ群の焦点距離
f2 は、第2レンズ群の焦点距離
f3 は、第3レンズ群の焦点距離
f4 は、第4レンズ群の焦点距離
f5 は、第5レンズ群の焦点距離
fT345は、望遠端における第3レンズ群から第5レンズ群までの焦点距離
である。The zoom lens according to claim 1, wherein the following conditional expression is satisfied.
2.0 <f 1 / f W <8.0 (1)
0.4 <| f 2 / f W | <1.0 (2)
0.3 <f 3 / f T345 <1.2 (3)
0.6 <| f 4 | / f T345 <5.0 (4)
0.5 <f 5 / f T345 <4.0 (5)
However,
f W is the focal length of the entire system at the wide angle end f 1 is the focal length of the first lens unit f 2 is the focal length of the second lens unit f 3 is the focal length of the third lens unit f 4 is the focal length f 5 of the fourth lens group, the focal length f T345 in the fifth lens group, the focal length of the third lens group at the telephoto end to the fifth lens group.
10<|ExpdW ×Y|/LW ・・・(6)
ただし、
ExpdW は、結像面位置から射出瞳までの光軸上距離
Yは、結像面での実際の最大像高
LW は、広角端での第1レンズ群の最も物体側面の頂点から結像面までの光軸上距離
である。6. The zoom lens according to claim 1, wherein the principal ray emitted from the optical system is determined based on the following conditional expression.
10 <| Expd W × Y | / L W (6)
However,
Expd W is the distance on the optical axis from the imaging plane position to the exit pupil Y is the actual maximum image height L W on the imaging plane, and is connected from the vertex of the most object side surface of the first lens group at the wide angle end. The distance on the optical axis to the image plane.
1.6<Δ1T/fW <5.0 ・・・(7)
1.0<Δ3T/fW <4.0 ・・・(8)
ただし、
Δ1Tは、広角端基準の第1レンズ群の望遠端までの変倍時の移動量
Δ3Tは、広角端基準の第3レンズ群の望遠端までの変倍時の移動量
である。The zoom lens according to any one of claims 1, 4, 5, and 6, wherein when zooming from the wide angle end to the telephoto end, the following relationship is satisfied.
1.6 <Δ 1T / f W <5.0 (7)
1.0 <Δ 3T / f W <4.0 (8)
However,
Δ 1T is a movement amount at the time of zooming to the telephoto end of the first lens group based on the wide angle end Δ 3T is a movement amount at the time of zooming to the telephoto end of the third lens group based on the wide angle end.
2.5<β2T/β2W<7 ・・・(9)
ただし、
β2Wは、第2レンズ群の広角端での結像倍率
β2Tは、第2レンズ群の望遠端での結像倍率
である。8. The zoom lens according to claim 1, wherein a paraxial lateral magnification of the second lens group satisfies the following relationship.
2.5 <β 2T / β 2W <7 (9)
However,
β 2W is the imaging magnification at the wide-angle end of the second lens group, and β 2T is the imaging magnification at the telephoto end of the second lens group.
2.0<f1 /fW <8.0 ・・・(1)
0.4<|f2 /fW |<1.0 ・・・(2)
0.3<f3 /fT345<1.2 ・・・(3)
0.6<|f4 |/fT345<5.0 ・・・(4)
0.5<f5 /fT345<4.0 ・・・(5)
ただし、
fW は、広角端における全系の焦点距離
f1 は、第1レンズ群の焦点距離
f2 は、第2レンズ群の焦点距離
f3 は、第3レンズ群の焦点距離
f4 は、第4レンズ群の焦点距離
f5 は、第5レンズ群の焦点距離
fT345は、望遠端における第3レンズ群から第5レンズ群までの焦点距離
である。The zoom lens according to claim 2, wherein the following conditional expression is satisfied.
2.0 <f 1 / f W <8.0 (1)
0.4 <| f 2 / f W | <1.0 (2)
0.3 <f 3 / f T345 <1.2 (3)
0.6 <| f 4 | / f T345 <5.0 (4)
0.5 <f 5 / f T345 <4.0 (5)
However,
f W is the focal length of the entire system at the wide angle end f 1 is the focal length of the first lens unit f 2 is the focal length of the second lens unit f 3 is the focal length of the third lens unit f 4 is the focal length f 5 of the fourth lens group, the focal length f T345 in the fifth lens group, the focal length of the third lens group at the telephoto end to the fifth lens group.
10<|ExpdW ×Y|/LW ・・・(6)
ただし、
ExpdW は、結像面位置から射出瞳までの光軸上距離
Yは、結像面での実際の最大像高
LW は、広角端での第1レンズ群の最も物体側面の頂点から結像面までの光軸上距離
である。11. The zoom lens according to claim 2, wherein the principal ray emitted from the optical system is determined based on the following conditional expression.
10 <| Expd W × Y | / L W (6)
However,
Expd W is the distance on the optical axis from the imaging plane position to the exit pupil Y is the actual maximum image height L W on the imaging plane, and is connected from the vertex of the most object side surface of the first lens group at the wide angle end. The distance on the optical axis to the image plane.
1.6<Δ1T/fW <5.0 ・・・(7)
1.0<Δ3T/fW <4.0 ・・・(8)
ただし、
Δ1Tは、広角端基準の第1レンズ群の望遠端までの変倍時の移動量
Δ3Tは、広角端基準の第3レンズ群の望遠端までの変倍時の移動量
である。12. The zoom lens according to claim 2, wherein when zooming from the wide angle end to the telephoto end, the following relationship is satisfied.
1.6 <Δ 1T / f W <5.0 (7)
1.0 <Δ 3T / f W <4.0 (8)
However,
Δ 1T is a movement amount at the time of zooming to the telephoto end of the first lens group based on the wide angle end Δ 3T is a movement amount at the time of zooming to the telephoto end of the third lens group based on the wide angle end.
2.5<β2T/β2W<7 ・・・(9)
ただし、
β2Wは、第2レンズ群の広角端での結像倍率
β2Tは、第2レンズ群の望遠端での結像倍率
である。13. The zoom lens according to claim 2, wherein the paraxial lateral magnification of the second lens group satisfies the following relationship.
2.5 <β 2T / β 2W <7 (9)
However,
β 2W is the imaging magnification at the wide-angle end of the second lens group, and β 2T is the imaging magnification at the telephoto end of the second lens group.
2.0<f1 /fW <8.0 ・・・(1)
0.4<|f2 /fW |<1.0 ・・・(2)
0.3<f3 /fT345<1.2 ・・・(3)
0.6<|f4 |/fT345<5.0 ・・・(4)
0.5<f5 /fT345<4.0 ・・・(5)
ただし、
fW は、広角端における全系の焦点距離
f1 は、第1レンズ群の焦点距離
f2 は、第2レンズ群の焦点距離
f3 は、第3レンズ群の焦点距離
f4 は、第4レンズ群の焦点距離
f5 は、第5レンズ群の焦点距離
fT345は、望遠端における第3レンズ群から第5レンズ群までの焦点距離
である。The zoom lens according to claim 3, wherein the following conditional expression is satisfied.
2.0 <f 1 / f W <8.0 (1)
0.4 <| f 2 / f W | <1.0 (2)
0.3 <f 3 / f T345 <1.2 (3)
0.6 <| f 4 | / f T345 <5.0 (4)
0.5 <f 5 / f T345 <4.0 (5)
However,
f W is the focal length of the entire system at the wide angle end f 1 is the focal length of the first lens unit f 2 is the focal length of the second lens unit f 3 is the focal length of the third lens unit f 4 is the focal length f 5 of the fourth lens group, the focal length f T345 in the fifth lens group, the focal length of the third lens group at the telephoto end to the fifth lens group.
10<|ExpdW ×Y|/LW ・・・(6)
ただし、
ExpdW は、結像面位置から射出瞳までの光軸上距離
Yは、結像面での実際の最大像高
LW は、広角端での第1レンズ群の最も物体側面の頂点から結像面までの光軸上距離
である。16. The zoom lens according to claim 3, wherein the chief ray emitted from the optical system is determined based on the following conditional expression.
10 <| Expd W × Y | / L W (6)
However,
Expd W is the distance on the optical axis from the imaging plane position to the exit pupil Y is the actual maximum image height L W on the imaging plane, and is connected from the vertex of the most object side surface of the first lens group at the wide angle end. The distance on the optical axis to the image plane.
1.6<Δ1T/fW <5.0 ・・・(7)
1.0<Δ3T/fW <4.0 ・・・(8)
ただし、
Δ1Tは、広角端基準の第1レンズ群の望遠端までの変倍時の移動量
Δ3Tは、広角端基準の第3レンズ群の望遠端までの変倍時の移動量
である。The zoom lens according to any one of claims 3, 14, 15, and 16, wherein the following relationship is satisfied when zooming from the wide-angle end to the telephoto end.
1.6 <Δ 1T / f W <5.0 (7)
1.0 <Δ 3T / f W <4.0 (8)
However,
Δ 1T is a movement amount at the time of zooming to the telephoto end of the first lens group based on the wide angle end Δ 3T is a movement amount at the time of zooming to the telephoto end of the third lens group based on the wide angle end.
2.5<β2T/β2W<7 ・・・(9)
ただし、
β2Wは、第2レンズ群の広角端での結像倍率
β2Tは、第2レンズ群の望遠端での結像倍率
である。The zoom lens according to any one of claims 3, 14, 15, 16, and 17, wherein the paraxial lateral magnification of the second lens group satisfies the following relationship.
2.5 <β 2T / β 2W <7 (9)
However,
β 2W is the imaging magnification at the wide-angle end of the second lens group, and β 2T is the imaging magnification at the telephoto end of the second lens group.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26659399A JP3835789B2 (en) | 1999-09-21 | 1999-09-21 | Zoom lens and camera equipped with the zoom lens |
US09/659,743 US6483648B1 (en) | 1999-09-10 | 2000-09-11 | Zoom lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26659399A JP3835789B2 (en) | 1999-09-21 | 1999-09-21 | Zoom lens and camera equipped with the zoom lens |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2001091833A JP2001091833A (en) | 2001-04-06 |
JP2001091833A5 true JP2001091833A5 (en) | 2005-05-19 |
JP3835789B2 JP3835789B2 (en) | 2006-10-18 |
Family
ID=17432975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP26659399A Expired - Fee Related JP3835789B2 (en) | 1999-09-10 | 1999-09-21 | Zoom lens and camera equipped with the zoom lens |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3835789B2 (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4266617B2 (en) * | 2001-12-28 | 2009-05-20 | オリンパス株式会社 | Wide-angle high-magnification zoom lens and photographing apparatus using the same |
JP5006634B2 (en) * | 2006-12-20 | 2012-08-22 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
JP2008209773A (en) * | 2007-02-27 | 2008-09-11 | Olympus Imaging Corp | Zoom lens, and electronic imaging apparatus using the same |
US7796344B2 (en) * | 2008-04-02 | 2010-09-14 | Panasonic Corporation | Zoom lens system, interchangeable lens apparatus and camera system |
JP5159398B2 (en) * | 2008-04-07 | 2013-03-06 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
JP5448574B2 (en) * | 2009-05-26 | 2014-03-19 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
JP5527515B2 (en) * | 2009-10-23 | 2014-06-18 | 株式会社ニコン | Variable magnification optical system and optical apparatus provided with the variable magnification optical system |
JP5527516B2 (en) * | 2009-10-23 | 2014-06-18 | 株式会社ニコン | Variable magnification optical system and optical apparatus provided with the variable magnification optical system |
US8385002B2 (en) | 2009-12-17 | 2013-02-26 | Samsung Electronics Co., Ltd. | Zoom lens and photographing apparatus |
JP2011128371A (en) * | 2009-12-17 | 2011-06-30 | Samsung Electronics Co Ltd | Zoom lens and imaging apparatus |
JP5171982B2 (en) * | 2011-04-15 | 2013-03-27 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
JP5933366B2 (en) * | 2012-06-22 | 2016-06-08 | 株式会社タムロン | Zoom lens and image pickup apparatus including the same |
JP6184118B2 (en) * | 2013-02-05 | 2017-08-23 | オリンパス株式会社 | Zoom lens |
JP6212264B2 (en) * | 2013-02-05 | 2017-10-11 | オリンパス株式会社 | Zoom lens |
JP6350096B2 (en) * | 2014-08-08 | 2018-07-04 | 株式会社シグマ | Zoom lens system and imaging apparatus having the same |
JP6501495B2 (en) * | 2014-11-06 | 2019-04-17 | キヤノン株式会社 | Zoom lens and imaging device having the same |
JP6536020B2 (en) * | 2014-11-26 | 2019-07-03 | リコーイメージング株式会社 | Zoom lens system |
CN108604003B (en) * | 2016-01-28 | 2021-02-26 | 株式会社尼康 | Zoom lens and optical apparatus |
-
1999
- 1999-09-21 JP JP26659399A patent/JP3835789B2/en not_active Expired - Fee Related
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