JP2010101979A5 - - Google Patents
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- JP2010101979A5 JP2010101979A5 JP2008271510A JP2008271510A JP2010101979A5 JP 2010101979 A5 JP2010101979 A5 JP 2010101979A5 JP 2008271510 A JP2008271510 A JP 2008271510A JP 2008271510 A JP2008271510 A JP 2008271510A JP 2010101979 A5 JP2010101979 A5 JP 2010101979A5
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- JP
- Japan
- Prior art keywords
- front group
- νd1an
- nd1an
- refractive index
- lenses
- Prior art date
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Description
さらに本発明を実施の結像光学系は、上記発明において、前群を物体側から順に、２枚の負レンズと２枚の正レンズとで構成し、以下の条件を満足する構成としたものである。
（５） Ｎｄ１ａｎ≧１．６９８９５
（６） νｄ１ａｎ≧３０．０５
ただし、
Ｎｄ１ａｎ：前群中の負レンズのｄ線の屈折率の最大値
νｄ１ａｎ：前群中の負レンズの中で最も高い屈折率を持つ硝材のアッベ数
Further, the imaging optical system embodying the present invention is the above-described invention, wherein the front group is composed of two negative lenses and two positive lenses in order from the object side, and satisfies the following conditions: It is.
(5) Nd1an ≧ 1.69895
(6) νd1an ≧ 30.05
However,
Nd1an: Maximum value of the refractive index of d-line of the negative lens in the front group νd1an: Abbe number of the glass material having the highest refractive index among the negative lenses in the front group
Claims (1)
（５） Ｎｄ１ａｎ≧１．６９８９５
（６） νｄ１ａｎ≧３０．０５
ただし、
Ｎｄ１ａｎ：前群中の負レンズのｄ線の屈折率の最大値
νｄ１ａｎ：前群中の負レンズの中で最も高い屈折率を持つ硝材のアッベ数
5. The front group is composed of two negative lenses and two positive lenses in order from the object side, and satisfies the following condition. 6. Imaging optical system.
(5) Nd1an ≧ 1.69895
(6) νd1an ≧ 30.05
However,
Nd1an: Maximum value of the refractive index of d-line of the negative lens in the front group νd1an: Abbe number of the glass material having the highest refractive index among the negative lenses in the front group
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008271510A JP5305831B2 (en) | 2008-10-22 | 2008-10-22 | Imaging optics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008271510A JP5305831B2 (en) | 2008-10-22 | 2008-10-22 | Imaging optics |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2010101979A JP2010101979A (en) | 2010-05-06 |
| JP2010101979A5 true JP2010101979A5 (en) | 2011-12-08 |
| JP5305831B2 JP5305831B2 (en) | 2013-10-02 |
Family
ID=42292703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008271510A Active JP5305831B2 (en) | 2008-10-22 | 2008-10-22 | Imaging optics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5305831B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5554143B2 (en) * | 2010-05-17 | 2014-07-23 | オリンパスイメージング株式会社 | Imaging apparatus using imaging optical system |
| JP5750729B2 (en) * | 2011-12-22 | 2015-07-22 | オリンパス株式会社 | Rear focus lens system and image pickup apparatus including the same |
| JP5900057B2 (en) | 2012-03-16 | 2016-04-06 | 株式会社ニコン | OPTICAL SYSTEM, OPTICAL DEVICE, AND OPTICAL SYSTEM MANUFACTURING METHOD |
| JP6554759B2 (en) * | 2014-05-29 | 2019-08-07 | 株式会社ニコン | Photographic lens, optical apparatus equipped with the photographic lens, and method of manufacturing photographic lens |
| CN110456479B (en) * | 2019-08-02 | 2024-02-13 | 佛山科学技术学院 | Vehicle-mounted driving-assisting imaging optical system with low distortion and large relative aperture |
| CN114137699B (en) * | 2021-12-06 | 2024-02-02 | 湖北久之洋红外***股份有限公司 | Small high-resolution athermalized medium-wave infrared optical system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0677102B2 (en) * | 1986-05-02 | 1994-09-28 | 旭光学工業株式会社 | Wide-angle lens |
| JP3445413B2 (en) * | 1995-08-04 | 2003-09-08 | オリンパス光学工業株式会社 | Lens system |
| JPH1123961A (en) * | 1997-07-03 | 1999-01-29 | Fuji Photo Film Co Ltd | Wide-angle lens |
| JP2001083411A (en) * | 1999-09-09 | 2001-03-30 | Fuji Photo Optical Co Ltd | Wide-angle lens |
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2008
- 2008-10-22 JP JP2008271510A patent/JP5305831B2/en active Active