GB503589A - Improvements in or relating to optical systems - Google Patents
Improvements in or relating to optical systemsInfo
- Publication number
- GB503589A GB503589A GB1827237A GB1827237A GB503589A GB 503589 A GB503589 A GB 503589A GB 1827237 A GB1827237 A GB 1827237A GB 1827237 A GB1827237 A GB 1827237A GB 503589 A GB503589 A GB 503589A
- Authority
- GB
- United Kingdom
- Prior art keywords
- collective
- component
- lens
- dispersive
- glass
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/04—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having two components only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
503,589. Lenses. SCOPHONY, Ltd., and LEE, H. W. July 1, 1937, No. 18272. [Class 97 (i)] An objective corrected for chromatic and spherical aberrations consists of two convergent components each of which is compound and comprises either a double convex or a plano-convex collective-lens cemented to a dispersive lens, the glass-air surface of at least one of the collective lenses being plane. The difference between the refractive indices of the glasses used may exceed 0À5 in at least one component. In the form shown the plane glass-air surface is provided on the collective lens of the front component. The dispersive member of the rear component may also have a plane glass-air surface. In a third form plane glass air surfaces are provided on the dispersive member at the rear of the front component and on the collective member at the front of the rear component. Data are given. Specification 439,236, [Group XL], is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1827237A GB503589A (en) | 1937-07-01 | 1937-07-01 | Improvements in or relating to optical systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1827237A GB503589A (en) | 1937-07-01 | 1937-07-01 | Improvements in or relating to optical systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB503589A true GB503589A (en) | 1939-04-03 |
Family
ID=10109598
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1827237A Expired GB503589A (en) | 1937-07-01 | 1937-07-01 | Improvements in or relating to optical systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB503589A (en) |
-
1937
- 1937-07-01 GB GB1827237A patent/GB503589A/en not_active Expired
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