JP5187951B2 - 撮像レンズ - Google Patents
撮像レンズ Download PDFInfo
- Publication number
- JP5187951B2 JP5187951B2 JP2008117706A JP2008117706A JP5187951B2 JP 5187951 B2 JP5187951 B2 JP 5187951B2 JP 2008117706 A JP2008117706 A JP 2008117706A JP 2008117706 A JP2008117706 A JP 2008117706A JP 5187951 B2 JP5187951 B2 JP 5187951B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- imaging lens
- imaging
- aberration
- refractive power
- 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.)
- Active
Links
- 238000003384 imaging method Methods 0.000 title claims description 45
- 230000014509 gene expression Effects 0.000 claims description 6
- 230000005499 meniscus Effects 0.000 claims description 6
- 230000004075 alteration Effects 0.000 description 37
- 238000010586 diagram Methods 0.000 description 7
- 201000009310 astigmatism Diseases 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 239000006059 cover glass Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
Landscapes
- Lenses (AREA)
Description
νd1>50 (1)
20<νd2≦29.0 (2)
20<νd3≦29.0 (3)
を満足するように構成した。
νd2=νd3 (4)
上記条件式(4)を満足するように撮像レンズを構成することにより、第2レンズと第3レンズの硝材を共通にすることができ、製造コストの低減を図ることができる。
νd1>50 (1)
20<νd2≦29.0 (2)
20<νd3≦29.0 (3)
を満足する。本実施の形態では、さらに次の条件式(4)を満足する。
νd2=νd3 (4)
基本的なレンズデータを以下に示す。
f=2.820mm、Fno=2.850、ω=31.82°
単位 mm
面データ
面番号i R d Nd νd
(物面) ∞ ∞
1* 0.994 0.4000 1.52470 56.2(=νd1)
2* -250.000 0.3338
3* -0.800 0.2700 1.58500 29.0(=νd2)
4* -1.266 0.2906
5* 2.445 0.5500 1.58500 29.0(=νd3)
6* 1.897 0.1200
7 ∞ 0.5000 1.51633 64.0
8 ∞ 0.7141
(像面) ∞
非球面データ
第1面
k=-7.896940E-01,A4=8.737008E-02,A6=2.491520E-01,A8=1.067526E-01,A10=-1.631444
第2面
k=-2.000000E-01,A4=-1.340621E-02,A6=1.021666,A8=-1.187767,A10=-3.031475
第3面
k=-3.004759,A4=9.566372E-01,A6=4.355547E-01,A8=-3.929834,A10=1.490549
第4面
k=1.187264,A4=1.379204,A6=3.020918E-01,A8=-2.724590E-01,A10=-9.065297E-01
第5面
k=-3.506622E+01,A4=3.768308E-03,A6=-3.526439E-01,A8=3.760278E-01,A10=-1.126834E-01
第6面
k=-2.597424E+01,A4=-4.827145E-02,A6=-1.269599E-01,A8=8.016258E-02,A10=-2.443238E-02
基本的なレンズデータを以下に示す。
f=2.820mm、Fno=2.850、ω=31.82°
単位 mm
面データ
面番号i R d Nd νd
(物面) ∞ ∞
1* 0.999 0.4000 1.52470 56.2(=νd1)
2* -250.000 0.3338
3* -0.800 0.2700 1.58500 29.0(=νd2)
4* -1.252 0.2906
5* 2.466 0.5500 1.58500 29.0(=νd3)
6* 1.910 0.1200
7 ∞ 0.5000 1.51633 64.0
8 ∞ 0.7206
(像面) ∞
非球面データ
第1面
k=-7.957504E-01,A4=8.589716E-02,A6=2.760649E-01,A8=1.459224E-01,A10=-1.758079
第2面
k=-2.000000E-01,A4=-1.798138E-03,A6=1.037928,A8=-1.172457,A10=-2.728364
第3面
k=-2.934304,A4=9.619215E-01,A6=4.763801E-01,A8=-3.825461,A10=1.648597
第4面
k=1.134386,A4=1.359959,A6=3.303322E-01,A8=-2.547396E-01,A10=-7.864106E-01
第5面
k=-2.656608E+01,A4=-3.360250E-02,A6=-3.308488E-01,A8=3.865180E-01,A10=-1.209835E-01
第6面
k=-2.412610E+01,A4=-4.935333E-02,A6=-1.446683E-01,A8=9.793812E-02,A10=-2.914553E-02
L2 第2レンズ
L3 第3レンズ
10 カバーガラス
Claims (2)
- 物体側から像面側に向かって順に、正の屈折力を有する両凸形状の第1レンズと、負の屈折力を有し、物体側に凹面を向けたメニスカスレンズの第2レンズと、負の屈折力を有し、物体側に凸面を向けたメニスカスレンズの第3レンズとからなる撮像レンズにおいて、
前記第1レンズのd線におけるアッベ数をνd1、前記第2レンズのd線におけるアッベ数をνd2、前記第3レンズのd線におけるアッベ数をνd3としたとき、
νd1>50 (1)
20<νd2≦29.0 (2)
20<νd3≦29.0 (3)
を満足することを特徴とする撮像レンズ。 - さらに、次の条件式(4)、
νd2=νd3 (4)
を満足することを特徴とする請求項1に記載の撮像レンズ。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008117706A JP5187951B2 (ja) | 2008-04-28 | 2008-04-28 | 撮像レンズ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008117706A JP5187951B2 (ja) | 2008-04-28 | 2008-04-28 | 撮像レンズ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009265528A JP2009265528A (ja) | 2009-11-12 |
JP5187951B2 true JP5187951B2 (ja) | 2013-04-24 |
Family
ID=41391429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008117706A Active JP5187951B2 (ja) | 2008-04-28 | 2008-04-28 | 撮像レンズ |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP5187951B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI448724B (zh) | 2012-08-15 | 2014-08-11 | Largan Precision Co Ltd | 光學攝影系統鏡組 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004226487A (ja) * | 2003-01-20 | 2004-08-12 | Seiko Epson Corp | 撮像レンズ |
JP2007047513A (ja) * | 2005-08-10 | 2007-02-22 | Hoya Corp | 撮像レンズ及び撮像装置 |
JP2007148314A (ja) * | 2005-11-07 | 2007-06-14 | Kyocera Corp | 撮像レンズ、光学モジュール、および携帯端末 |
JP5259198B2 (ja) * | 2008-01-15 | 2013-08-07 | オリンパス株式会社 | 広角光学系及びそれを用いた撮像装置 |
-
2008
- 2008-04-28 JP JP2008117706A patent/JP5187951B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
JP2009265528A (ja) | 2009-11-12 |
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