JPWO2019235498A5 - - Google Patents
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- JPWO2019235498A5 JPWO2019235498A5 JP2020523131A JP2020523131A JPWO2019235498A5 JP WO2019235498 A5 JPWO2019235498 A5 JP WO2019235498A5 JP 2020523131 A JP2020523131 A JP 2020523131A JP 2020523131 A JP2020523131 A JP 2020523131A JP WO2019235498 A5 JPWO2019235498 A5 JP WO2019235498A5
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- lens
- refractive power
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- angle optical
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- 230000003287 optical effect Effects 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 4
- 238000003384 imaging method Methods 0.000 claims description 3
- 239000005304 optical glass Substances 0.000 claims description 2
Description
請求項１に記載の広角光学系は、１８０度を超える画角を有する広角光学系であって、物体側から順に、前群、開口絞り及び後群を配置してなり、前記前群は、物体側から順に配置された、負の屈折力を有する第１レンズ、負の屈折力を有する第２レンズ、負の屈折力を有する第３レンズ及び正の屈折力を有する第４レンズからなり、前記後群は、物体側から順に配置された、正の屈折力を有する第５レンズ、負の屈折力を有する第６レンズ、負の屈折力を有する第７レンズ及び正の屈折力を有する第８レンズからなり、
以下の条件式を満足することを特徴とする広角光学系。
－０.０５＜ｆ/ｆ６－ｆ/ｆ7＜０.０５ （１）
０.３＜ｒ１２/ｒ１３＜１.５ （３）
ここで、
ｆは広角光学系全系の焦点距離、
ｆ６は第６レンズの焦点距離、
ｆ７は第７レンズの焦点距離、
ｒ１２は第６レンズの像側の面の曲率半径、
ｒ１３は第７レンズの物体側の面の曲率半径、
である。
A wide-angle optical system according to claim 1 is a wide-angle optical system having an angle of view exceeding 180 degrees, comprising a front group, an aperture stop and a rear group arranged in order from the object side, the front group comprising: Consisting of a first lens with negative refractive power, a second lens with negative refractive power, a third lens with negative refractive power, and a fourth lens with positive refractive power, arranged in order from the object side, The rear group includes a fifth lens having positive refractive power, a sixth lens having negative refractive power, a seventh lens having negative refractive power, and a third lens having positive refractive power, which are arranged in order from the object side. It consists of 8 lenses ,
A wide-angle optical system characterized by satisfying the following conditional expression.
-0.05<f/f6-f/f7<0.05 (1)
0.3<r12/r13<1.5 (3)
here,
f is the focal length of the entire wide-angle optical system,
f6 is the focal length of the sixth lens,
f7 is the focal length of the seventh lens,
r12 is the radius of curvature of the image-side surface of the sixth lens;
r13 is the radius of curvature of the object-side surface of the seventh lens;
is.
請求項２に記載の広角光学系は、請求項１に記載の広角光学系において、条件式（１）に変えて、以下の条件式を満足することが好ましい。
－０.０５＜ｆ/ｆ６－ｆ/ｆ7＜０ （２）
In the wide-angle optical system according to claim 2, the wide-angle optical system according to claim 1 preferably satisfies the following conditional expression instead of conditional expression (1) .
-0.05<f/f6-f/f7<0 (2)
請求項３に記載の広角光学系は、請求項１又は請求項２に記載の広角光学系において、前記後群を構成する第５レンズ、第６レンズ及び第７レンズのうち、いずれか２枚のレンズの材質が光学ガラスであり、１枚のレンズの材質がプラスチックであることが好ましい。 A wide-angle optical system according to claim 3 is the wide-angle optical system according to claim 1 or claim 2 , wherein any two of the fifth lens, the sixth lens, and the seventh lens constituting the rear group Preferably, the material of the lens is optical glass, and the material of one lens is plastic.
請求項４に記載の広角光学系は、請求項１から請求項３のいずれか１項に記載の広角光学系において、第７レンズが両凹レンズであることが好ましい。 The wide-angle optical system described in claim 4 is the wide-angle optical system described in any one of claims 1 to 3 , wherein the seventh lens is preferably a biconcave lens.
請求項５に記載の撮像装置は、請求項１から請求項４のいずれか１項に記載の広角光学系と、
固体撮像素子と、を備えた事を特徴とする。
The imaging device according to claim 5 , the wide-angle optical system according to any one of claims 1 to 4 ,
and a solid-state imaging device.
Claims (5)
物体側から順に、前群、開口絞り及び後群を配置してなり、
前記前群は、物体側から順に配置された、負の屈折力を有する第１レンズ、負の屈折力を有する第２レンズ、負の屈折力を有する第３レンズ及び正の屈折力を有する第４レンズからなり、
前記後群は、物体側から順に配置された、正の屈折力を有する第５レンズ、負の屈折力を有する第６レンズ、負の屈折力を有する第７レンズ及び正の屈折力を有する第８レンズからなり、
以下の条件式を満足することを特徴とする広角光学系。
－０.０５＜ｆ/ｆ６－ｆ/ｆ7＜０.０５ （１）
０.３＜ｒ１２/ｒ１３＜１.５ （３）
ここで、
ｆは広角光学系全系の焦点距離、
ｆ６は第６レンズの焦点距離、
ｆ７は第７レンズの焦点距離、
ｒ１２は第６レンズの像側の面の曲率半径、
ｒ１３は第７レンズの物体側の面の曲率半径、
である。 A wide-angle optical system having an angle of view exceeding 180 degrees,
A front group, an aperture stop, and a rear group are arranged in order from the object side,
The front group includes a first lens having negative refractive power, a second lens having negative refractive power, a third lens having negative refractive power, and a third lens having positive refractive power, which are arranged in order from the object side. It consists of 4 lenses,
The rear group includes a fifth lens having positive refractive power, a sixth lens having negative refractive power, a seventh lens having negative refractive power, and a third lens having positive refractive power, which are arranged in order from the object side. It consists of 8 lenses ,
A wide-angle optical system characterized by satisfying the following conditional expression.
-0.05<f/f6-f/f7<0.05 (1)
0.3<r12/r13<1.5 (3)
here,
f is the focal length of the entire wide-angle optical system,
f6 is the focal length of the sixth lens,
f7 is the focal length of the seventh lens,
r12 is the radius of curvature of the image-side surface of the sixth lens;
r13 is the radius of curvature of the object-side surface of the seventh lens;
is.
－０.０５＜ｆ/ｆ６－ｆ/ｆ7＜０ （２） 2. A wide-angle optical system according to claim 1, wherein the following conditional expression is satisfied instead of conditional expression (1) .
-0.05<f/f6-f/f7<0 (2)
固体撮像素子と、を備えた事を特徴とする撮像装置。
A wide-angle optical system according to any one of claims 1 to 4 ;
and a solid-state imaging device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018107280 | 2018-06-04 | ||
| JP2018107280 | 2018-06-04 | ||
| PCT/JP2019/022240 WO2019235498A1 (en) | 2018-06-04 | 2019-06-04 | Wide-angle optical system and imaging device including same |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPWO2019235498A1 JPWO2019235498A1 (en) | 2021-08-05 |
| JPWO2019235498A5 true JPWO2019235498A5 (en) | 2023-01-11 |
| JP7286893B2 JP7286893B2 (en) | 2023-06-06 |
Family
ID=68770946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020523131A Active JP7286893B2 (en) | 2018-06-04 | 2019-06-04 | WIDE-ANGLE OPTICAL SYSTEM AND IMAGING DEVICE HAVING THE SAME |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7286893B2 (en) |
| WO (1) | WO2019235498A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110908079B (en) * | 2019-12-20 | 2022-03-29 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| WO2021127871A1 (en) * | 2019-12-23 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| WO2021127884A1 (en) * | 2019-12-23 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| TWI781573B (en) * | 2021-04-07 | 2022-10-21 | 大立光電股份有限公司 | Optical imaging lens assembly, image capturing unit and electronic device |
| WO2023127560A1 (en) * | 2021-12-28 | 2023-07-06 | 株式会社ニコン | Optical system, optical apparatus, and method for manufacturing optical system |
| CN114967051B (en) * | 2022-04-11 | 2023-11-10 | 青岛理工大学 | Face recognition lens |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4186560B2 (en) * | 2002-09-12 | 2008-11-26 | コニカミノルタオプト株式会社 | Super wide angle lens |
| KR101070991B1 (en) * | 2009-05-19 | 2011-10-06 | 주식회사 나노포토닉스 | Fisheye lens |
| CN106094172A (en) * | 2016-08-25 | 2016-11-09 | 厦门爱劳德光电有限公司 | A kind of 5,000,000 pixel fish eye lenses |
| CN205920265U (en) * | 2016-08-25 | 2017-02-01 | 厦门爱劳德光电有限公司 | 500 ten thousand pixel fisheye lens |
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2019
- 2019-06-04 WO PCT/JP2019/022240 patent/WO2019235498A1/en active Application Filing
- 2019-06-04 JP JP2020523131A patent/JP7286893B2/en active Active