JP2020170066A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2020170066A5 JP2020170066A5 JP2019070523A JP2019070523A JP2020170066A5 JP 2020170066 A5 JP2020170066 A5 JP 2020170066A5 JP 2019070523 A JP2019070523 A JP 2019070523A JP 2019070523 A JP2019070523 A JP 2019070523A JP 2020170066 A5 JP2020170066 A5 JP 2020170066A5
- Authority
- JP
- Japan
- Prior art keywords
- lens group
- lens
- conditional expression
- image
- object side
- 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
- 101000611540 Agaricus bisporus Polyphenol oxidase 4 Proteins 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
Description
さらに本発明のリアコンバージョンレンズでは、以下に示す条件式を満足することが望ましい。
（７） ０．２０≦ｆ１２３／ｆ≦０．５０
（８） （Ｄ３４－ＰＰＩ１２３＋ＰＰＯ４）／（－ｆ）≧０．０６０
但し、
ｆ１２３：前記第１レンズ群から前記第３レンズ群の合成焦点距離
ｆ：前記リアコンバージョンレンズ全系の焦点距離
Ｄ３４：前記第３レンズ群と前記第４レンズ群の間の空気間隔
ＰＰＩ１２３：前記第３レンズ群の最も像側のレンズ面から、前記第１レンズ群から前記第３レンズ群の合成系の像側主点までの距離（物体側から像側に向かう向きを正とする。）
ＰＰＯ４：前記第４レンズ群の最も物体側のレンズ面から、前記第４レンズ群の物体側主点までの距離（物体側から像側に向かう向きを正とする。）
Further, it is desirable that the rear conversion lens of the present invention satisfies the conditional expression shown below.
(7) 0.20 ≦ f123 / f ≦ 0.50
(8) (D34-PPI123 + PPO4) / (-f) ≧ 0.060
however,
f123: Combined focal length from the first lens group to the third lens group f: Focal length of the entire rear conversion lens system D34: Air gap between the third lens group and the fourth lens group PPI123: The first. Distance from the most image-side lens surface of the three lens groups to the image-side focal length of the synthetic system of the third lens group (the direction from the object side to the image side is positive).
PPO4: Distance from the lens surface on the most object side of the 4th lens group to the principal point on the object side of the 4th lens group (the direction from the object side to the image side is positive).
[条件式対応値]
条件式／実施例 ex1 ex2 ex3
(1) ０．４０≦ＢＦ／ｈ≦１．１０ 0.63 0.72 0.82
(2) ０．７０≦（Ｌ－ＰＰＯ）／Ｌ≦１．３０ 1.13 0.97 0.86
(3) －０．２０≦（Ｌ＋ＰＰＩ）／Ｌ≦０．５０ -0.01 0.20 0.36
(4) ０．５０≦ｆ２／ｆ３≦２．００ 1.48 1.32 1.38
(5) １．９７≦ｎｄ３ｎ 2.05 2.05 2.05
(6) ０．５０≦Ｄ２３／Ｄｓｕｍ 0.65 0.78 0.81
(7) ０．２０≦ｆ１２３／ｆ≦０．５０ 0.32 0.37 0.40
(8) 下記参照 0.097 0.095 0.078
(9) ０．１５≦ＲＧ４ｒｅａｒ／ｆ≦０．４５ 0.23 0.28 0.34
(10) ２１．０≦Ｓ０＊ＨＧ１＊β／ｈ 23.20 23.46 24.18
(11) １．２５≦β≦１．５５ 1.39 1.40 1.40
条件式／実施例 ex4 ex5
(1) ０．４０≦ＢＦ／ｈ≦１．１０ 0.69 0.68
(2) ０．７０≦（Ｌ－ＰＰＯ）／Ｌ≦１．３０ 1.04 1.11
(3) －０．２０≦（Ｌ＋ＰＰＩ）／Ｌ≦０．５０ 0.11 0.01
(4) ０．５０≦ｆ２／ｆ３≦２．００ 0.83 0.75
(5) １．９７≦ｎｄ３ｎ 2.05 2.05
(6) ０．５０≦Ｄ２３／Ｄｓｕｍ 0.66 0.69
(7) ０．２０≦ｆ１２３／ｆ≦０．５０ 0.37 0.31
(8) 下記参照 0.110 0.091
(9) ０．１５≦ＲＧ４ｒｅａｒ／ｆ≦０．４５ 0.25 0.23
(10) ２１．０≦Ｓ０＊ＨＧ１＊β／ｈ 23.72 24.04
(11) １．２５≦β≦１．５５ 1.41 1.41
※条件式（８）０．０６０≦（Ｄ３４－ＰＰＩ１２３＋ＰＰＯ４）／（－ｆ）
[Conditional expression correspondence value]
Conditional expression / Example ex1 ex2 ex3
(1) 0.40 ≤ BF / h ≤ 1.10 0.63 0.72 0.82
(2) 0.70 ≦ (L-PPO) / L ≦ 1.30 1.13 0.97 0.86
(3) -0.20 ≤ (L + PPI) / L ≤ 0.50 -0.01 0.20 0.36
(4) 0.50 ≤ f2 / f3 ≤ 2.00 1.48 1.32 1.38
(5) 1.97 ≤ nd3n 2.05 2.05 2.05
(6) 0.50 ≤ D23 / Dsum 0.65 0.78 0.81
(7) 0.20 ≤ f123 / f ≤ 0.50 0.32 0.37 0.40
(8) See below 0.097 0.095 0.078
(9) 0.15 ≤ RG4rear / f ≤ 0.45 0.23 0.28 0.34
(10) 21.0 ≤ S0 * HG1 * β / h 23.20 23.46 24.18
(11) 1.25 ≤ β ≤ 1.55 1.39 1.40 1.40
Conditional expression / Example ex4 ex5
(1) 0.40 ≤ BF / h ≤ 1.10 0.69 0.68
(2) 0.70 ≦ (L-PPO) / L ≦ 1.30 1.04 1.11
(3) −0.20 ≦ (L + PPI) / L ≦ 0.50 0.11 0.01
(4) 0.50 ≤ f2 / f3 ≤ 2.00 0.83 0.75
(5) 1.97 ≤ nd3n 2.05 2.05
(6) 0.50 ≤ D23 / Dsum 0.66 0.69
(7) 0.20 ≤ f123 / f ≤ 0.50 0.37 0.31
(8) See below 0.110 0.091
(9) 0.15 ≤ RG4rear / f ≤ 0.45 0.25 0.23
(10) 21.0 ≤ S0 * HG1 * β / h 23.72 24.04
(11) 1.25 ≤ β ≤ 1.55 1.41 1.41
* Conditional expression (8) 0.060 ≦ (D34-PPI123 + PPO4) / (-f)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019070523A JP7130245B2 (en) | 2019-04-02 | 2019-04-02 | rear conversion lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019070523A JP7130245B2 (en) | 2019-04-02 | 2019-04-02 | rear conversion lens |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2020170066A JP2020170066A (en) | 2020-10-15 |
| JP2020170066A5 true JP2020170066A5 (en) | 2022-01-20 |
| JP7130245B2 JP7130245B2 (en) | 2022-09-05 |
Family
ID=72746672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019070523A Active JP7130245B2 (en) | 2019-04-02 | 2019-04-02 | rear conversion lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7130245B2 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008107448A (en) * | 2006-10-24 | 2008-05-08 | Sony Corp | Imaging apparatus |
| JP6168761B2 (en) * | 2012-12-07 | 2017-07-26 | キヤノン株式会社 | Teleconversion lens and imaging apparatus using the same |
| KR20160094224A (en) * | 2015-01-30 | 2016-08-09 | 삼성전자주식회사 | Rear conversion lens |
| JP6750638B2 (en) * | 2016-02-01 | 2020-09-02 | ソニー株式会社 | Teleconverter lens and optical equipment |
| JP6506202B2 (en) * | 2016-03-25 | 2019-04-24 | 富士フイルム株式会社 | Rear converter lens and imaging device |
-
2019
- 2019-04-02 JP JP2019070523A patent/JP7130245B2/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2209035A3 (en) | Optical zoom of the retrofocus type having four lens groups | |
| JP2017021185A5 (en) | ||
| JP6219189B2 (en) | Teleconverter lens and imaging device | |
| JP2006519421A5 (en) | ||
| CN104865681A (en) | Wide-angle lens | |
| JP2017078763A5 (en) | ||
| JP2015215392A5 (en) | ||
| JP2017207647A5 (en) | ||
| JP2010160465A5 (en) | ||
| JP2019066586A5 (en) | ||
| JP2019060918A5 (en) | ||
| JP2012113182A5 (en) | Magnification optical system and optical instrument | |
| JP2015191008A5 (en) | ||
| JP2020173286A5 (en) | ||
| JP2017102323A5 (en) | ||
| JP2020071439A5 (en) | ||
| JP2020170066A5 (en) | ||
| JP2016048354A5 (en) | ||
| JP2015145913A5 (en) | ||
| JP2013057802A5 (en) | ||
| JP2015072325A5 (en) | ||
| JP2017219783A5 (en) | ||
| JP2017044764A5 (en) | ||
| JP2014211521A5 (en) | ||
| JP2016161887A5 (en) |