RU97122300A - LIGHT LIGHT - Google Patents
LIGHT LIGHTInfo
- Publication number
- RU97122300A RU97122300A RU97122300/28A RU97122300A RU97122300A RU 97122300 A RU97122300 A RU 97122300A RU 97122300/28 A RU97122300/28 A RU 97122300/28A RU 97122300 A RU97122300 A RU 97122300A RU 97122300 A RU97122300 A RU 97122300A
- Authority
- RU
- Russia
- Prior art keywords
- lens
- component
- components
- light
- focal length
- Prior art date
Links
- 230000005499 meniscus Effects 0.000 claims 1
Claims (1)
0,8<f'2/f'<1,5,
0,3<d2/f'<0,42,
0,3<d4/f'<0,5,
0,7<r3/f'<1,2,
50 < ν2,
1,6<(n4+n5)/2<1,65,
где f' - фокусное расстояние всего объектива;
f'1, f'2 - фокусное расстояние первого и второго компонентов;
d2 - воздушный промежуток между первым и вторым компонентами;
d4 - воздушный промежуток между вторым и третьим компонентами,
r3 - радиус кривизны линзы второго компонента;
ν2 - коэффициент Аббе материала линзы второго компонента;
n4, n5 - показатели преломления материала линз четвертого и пятого компонентов.A fast lens containing five components, the first of which is a negative meniscus facing concavity to the image, the second component is a biconvex lens, the third component is a biconcave lens, the fourth component is a positive lens, and the fifth component is a biconvex lens, characterized in that the fourth component made in the form of a plano-convex lens, with the following relationships:
0.8 <f ' 2 / f'<1.5,
0.3 <d 2 / f '<0.42,
0.3 <d 4 / f '<0.5,
0.7 <r 3 / f '<1.2,
50 <ν 2 ,
1.6 <(n 4 + n 5 ) / 2 <1.65,
where f 'is the focal length of the entire lens;
f ' 1 , f' 2 - the focal length of the first and second components;
d 2 - air gap between the first and second components;
d 4 - the air gap between the second and third components,
r 3 is the radius of curvature of the lens of the second component;
ν 2 is the Abbe coefficient of the lens material of the second component;
n 4 , n 5 are the refractive indices of the lens material of the fourth and fifth components.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU97122300/28A RU2154292C2 (en) | 1997-12-30 | 1997-12-30 | Fast lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU97122300/28A RU2154292C2 (en) | 1997-12-30 | 1997-12-30 | Fast lens |
Publications (2)
Publication Number | Publication Date |
---|---|
RU97122300A true RU97122300A (en) | 1999-10-10 |
RU2154292C2 RU2154292C2 (en) | 2000-08-10 |
Family
ID=20200895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU97122300/28A RU2154292C2 (en) | 1997-12-30 | 1997-12-30 | Fast lens |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2154292C2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI437311B (en) * | 2011-04-08 | 2014-05-11 | Largan Precision Co | Optical lens assembly for image taking |
KR101813335B1 (en) | 2015-11-26 | 2017-12-28 | 삼성전기주식회사 | Optical Imaging System |
RU2639242C2 (en) * | 2016-04-11 | 2017-12-20 | Публичное акционерное общество "Ростовский оптико-механический завод" (ПАО "РОМЗ") | Lens |
-
1997
- 1997-12-30 RU RU97122300/28A patent/RU2154292C2/en not_active IP Right Cessation
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