RU97121366A - LIGHT LIGHT - Google Patents
LIGHT LIGHTInfo
- Publication number
- RU97121366A RU97121366A RU97121366/28A RU97121366A RU97121366A RU 97121366 A RU97121366 A RU 97121366A RU 97121366/28 A RU97121366/28 A RU 97121366/28A RU 97121366 A RU97121366 A RU 97121366A RU 97121366 A RU97121366 A RU 97121366A
- Authority
- RU
- Russia
- Prior art keywords
- component
- components
- focal length
- light
- lens
- Prior art date
Links
- 230000005499 meniscus Effects 0.000 claims 1
Claims (1)
0,55f' < f'12 < 0,7f',
5,5f' < f'123 < 7f',
0,4f' < d1+d2+d3+d4+d5 < 0,6f',
0,5f' < f'4 < 0,65f',
0,2f' < d6 < 0,3f',
0,5, < r3/r4 < 0,65,
0,2f' < r6 < 0,3f',
1,58 < n1 = n2 = n4 < 1,65,
где f' - фокусное расстояние всего объектива;
f'12 - фокусное расстояние первого, второго компонентов,
f'123 - фокусное расстояние первого, второго, третьего компонентов,
f'4 - фокусное расстояние четвертого компонента;
d1,d2,d3,d4,d5,d6- толщины и воздушные промежутки в объективе;
r3, r4 - радиусы кривизны второго компонента;
r6 - второй радиус кривизны третьего компонента;
n1, n2, n4 - показатели преломления линз первого, второго и четвертого компонентов.A fast lens containing four components, the first and second of which are positive menisci convex to the object, the third component is the negative meniscus facing concavity to the image, the fourth component is positive, characterized in that the fourth component is made in the form of a biconvex lens, the following relations hold for this:
0.55f '<f' 12 <0.7f ',
5.5f '<f' 123 <7f ',
0.4f '<d 1 + d 2 + d 3 + d 4 + d 5 <0.6f',
0.5f '<f' 4 <0.65f ',
0.2f '<d 6 <0.3f',
0.5, <r 3 / r 4 <0.65,
0.2f '<r 6 <0.3f',
1.58 <n 1 = n 2 = n 4 <1.65,
where f 'is the focal length of the entire lens;
f '12 - the focal length of the first, second components,
f ' 123 is the focal length of the first, second, third components,
f ' 4 is the focal length of the fourth component;
d 1 , d 2 , d 3 , d 4 , d 5 , d 6 - thickness and air gaps in the lens;
r 3 , r 4 are the radii of curvature of the second component;
r 6 is the second radius of curvature of the third component;
n 1 , n 2 , n 4 are the refractive indices of the lenses of the first, second and fourth components.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU97121366/28A RU2153691C2 (en) | 1997-12-23 | 1997-12-23 | Fast lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU97121366/28A RU2153691C2 (en) | 1997-12-23 | 1997-12-23 | Fast lens |
Publications (2)
Publication Number | Publication Date |
---|---|
RU97121366A true RU97121366A (en) | 1999-09-27 |
RU2153691C2 RU2153691C2 (en) | 2000-07-27 |
Family
ID=20200343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU97121366/28A RU2153691C2 (en) | 1997-12-23 | 1997-12-23 | Fast lens |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2153691C2 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5322582B2 (en) * | 2008-10-30 | 2013-10-23 | 三洋電機株式会社 | Lens device, photographing device |
RU2506616C1 (en) * | 2012-07-17 | 2014-02-10 | Открытое акционерное общество "Конструкторское бюро приборостроения" | High-speed infrared lens |
RU2604112C2 (en) * | 2015-04-30 | 2016-12-10 | Акционерное общество "Швабе - Приборы" | Objective lens for infrared spectrum |
RU2594955C1 (en) * | 2015-06-09 | 2016-08-20 | Акционерное общество "Швабе - Приборы" | Telescopic lens for infrared spectrum |
RU2618590C1 (en) * | 2016-04-25 | 2017-05-04 | Акционерное общество "Швабе - Приборы" | Athermalised lens for ir spectrum area |
-
1997
- 1997-12-23 RU RU97121366/28A patent/RU2153691C2/en not_active IP Right Cessation
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