RU97105277A - LENS - Google Patents
LENSInfo
- Publication number
- RU97105277A RU97105277A RU97105277/28A RU97105277A RU97105277A RU 97105277 A RU97105277 A RU 97105277A RU 97105277/28 A RU97105277/28 A RU 97105277/28A RU 97105277 A RU97105277 A RU 97105277A RU 97105277 A RU97105277 A RU 97105277A
- Authority
- RU
- Russia
- Prior art keywords
- lens
- component
- focal length
- negative meniscus
- components
- Prior art date
Links
- 230000005499 meniscus Effects 0.000 claims 3
Claims (2)
0,3 < d3/f' < 0,5
0,1 < r4/f' < 0,2
1,1 < r4/r5 < 1,35
1,45 < n3 < 1,53,
где фокусное расстояние первого компонента; фокусное расстояние второй линзы первого компонента; f' - фокусное расстояние объектива; d3 - воздушный промежуток между первым и вторым компонентами; r4, r5 - радиусы кривизны сферических поверхностей второго компонента; n3 - показатель преломления линзы второго компонента.1. A lens containing two components, the first of which is a biconvex lens and a negative meniscus facing concavity to the object, the second component is a negative meniscus facing concavity to the image, characterized in that in the first component the biconvex lens is glued with a negative meniscus, The following relations hold for this:
0.3 <d 3 / f '<0.5
0.1 <r 4 / f '<0.2
1.1 <r 4 / r 5 <1.35
1.45 <n 3 <1.53,
Where focal length of the first component; the focal length of the second lens of the first component; f 'is the focal length of the lens; d 3 - air gap between the first and second components; r 4 , r 5 are the radii of curvature of the spherical surfaces of the second component; n 3 is the refractive index of the lens of the second component.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU97105277/28A RU2112255C1 (en) | 1997-04-02 | 1997-04-02 | Objective lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU97105277/28A RU2112255C1 (en) | 1997-04-02 | 1997-04-02 | Objective lens |
Publications (2)
Publication Number | Publication Date |
---|---|
RU2112255C1 RU2112255C1 (en) | 1998-05-27 |
RU97105277A true RU97105277A (en) | 1998-11-20 |
Family
ID=20191527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU97105277/28A RU2112255C1 (en) | 1997-04-02 | 1997-04-02 | Objective lens |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2112255C1 (en) |
-
1997
- 1997-04-02 RU RU97105277/28A patent/RU2112255C1/en not_active IP Right Cessation
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