GB190618525A - Improvements in Double Objectives - Google Patents
Improvements in Double ObjectivesInfo
- Publication number
- GB190618525A GB190618525A GB190618525DA GB190618525A GB 190618525 A GB190618525 A GB 190618525A GB 190618525D A GB190618525D A GB 190618525DA GB 190618525 A GB190618525 A GB 190618525A
- Authority
- GB
- United Kingdom
- Prior art keywords
- component
- concave surface
- pair
- facing surfaces
- weaker
- 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.)
- Expired
Links
Landscapes
- Lenses (AREA)
Abstract
18,525. Rohr, M. von. Aug. 18. Lenses.-Relates to double objectives of the type in which each of the two-lens components possesses a dispersive pair of facing surfaces of unequal curvatures, and in which the flint-glass lens occurs on the inner side with the non-concave surface turned inwards. For the better correction of coma, the component from which the parallel rays emerge 'has a weaker pair of facing surfaces r<6>, r<7> and a weaker curvature of the non-concave surface r<5> than the corresponding faces of the other component. Constructional data are given in the Specification.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190618525T | 1906-08-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190618525A true GB190618525A (en) | 1907-07-04 |
Family
ID=32487159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190618525D Expired GB190618525A (en) | 1906-08-18 | 1906-08-18 | Improvements in Double Objectives |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190618525A (en) |
-
1906
- 1906-08-18 GB GB190618525D patent/GB190618525A/en not_active Expired
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