GB723367A - Photographic objective - Google Patents
Photographic objectiveInfo
- Publication number
- GB723367A GB723367A GB14528/52A GB1452852A GB723367A GB 723367 A GB723367 A GB 723367A GB 14528/52 A GB14528/52 A GB 14528/52A GB 1452852 A GB1452852 A GB 1452852A GB 723367 A GB723367 A GB 723367A
- Authority
- GB
- United Kingdom
- Prior art keywords
- collective
- june
- relative aperture
- members
- objective
- 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 -
- G02B9/12—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
723,367. Optical Objectives. ZEISS-OPTON OPTISCHE WERKE OBERKOCHEN GES. June 9, 1952 [June 12, 1951], No. 14525]52. Class 97 (1). A photographic objective with a relative aperture of at least. 1/3 5 consists of a simple front collective meniscus member with an n d value of at least 1.64 and a front surface radius at least 0.3 times the objective focal length, a simple biconcave member and a collective rear member composed of elements of opposite refractive power and having a collective cemented surface convex to the front the air space between the front and middle members being smaller than that between the middle and rear members. Data are given for two examples for a relative aperture of 1/2.8.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE723367X | 1951-06-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB723367A true GB723367A (en) | 1955-02-09 |
Family
ID=6632638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14528/52A Expired GB723367A (en) | 1951-06-12 | 1952-06-09 | Photographic objective |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB723367A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2769372A (en) * | 1955-07-25 | 1956-11-06 | Wollensak Optical Co | Three component objectives for photographic and projection purposes |
-
1952
- 1952-06-09 GB GB14528/52A patent/GB723367A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2769372A (en) * | 1955-07-25 | 1956-11-06 | Wollensak Optical Co | Three component objectives for photographic and projection purposes |
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