GB741511A - Improvements in or relating to optical objectives - Google Patents
Improvements in or relating to optical objectivesInfo
- Publication number
- GB741511A GB741511A GB2147753A GB2147753A GB741511A GB 741511 A GB741511 A GB 741511A GB 2147753 A GB2147753 A GB 2147753A GB 2147753 A GB2147753 A GB 2147753A GB 741511 A GB741511 A GB 741511A
- Authority
- GB
- United Kingdom
- Prior art keywords
- divergent
- meniscus
- component
- rear member
- convergent
- 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
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/04—Reversed telephoto objectives
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
741,511. Optical systems. COOK, G. H., and TAYLOR, TAYLOR & HOBSON, Ltd.. Aug. 4, 1954 [Aug. 4, 1953; March 16, 1954], Nos. 21477/53 and 7614/54. Class 97 (1). A corrected objective of the inverted telephoto type comprises a divergent front member widely separated from a convergent rear member consisting of five components, of which the middle one is divergent and the other four convergent, the two outer air spaces in the rear member being collective whilst the two inner air spaces in such member are dispersive. The convergent second component of the rear member may be of meniscus form with its airexposed surfaces convex to the front, and the divergent middle component biconcave, whilst the two rear components may each be biconvex, the front surface of the front component of the rear member being convex to the front. Numerical data are given for two examples of the objective shown, for one, as shown, in which the second component of the rear member is a simple meniscus, for one, as shown, in which the front member consists of a simple biconvex lens followed by a divergent meniscus and the second component of the rear member is a simple meniscus, and for one, as shown, in which the front member is a simple divergent meniscus followed by a convergent doublet formed by cementing a biconvex element and a biconcave element. Specification 696,159 is referred to.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2147753A GB741511A (en) | 1953-08-04 | 1953-08-04 | Improvements in or relating to optical objectives |
FR1097478D FR1097478A (en) | 1953-08-04 | 1954-03-30 | Improvements to optical device lenses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2147753A GB741511A (en) | 1953-08-04 | 1953-08-04 | Improvements in or relating to optical objectives |
Publications (1)
Publication Number | Publication Date |
---|---|
GB741511A true GB741511A (en) | 1955-12-07 |
Family
ID=10163608
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2147753A Expired GB741511A (en) | 1953-08-04 | 1953-08-04 | Improvements in or relating to optical objectives |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1097478A (en) |
GB (1) | GB741511A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2826117A (en) * | 1955-12-12 | 1958-03-11 | Canon Camera Co | High aperture wide-angle objective for cinematographic cameras |
DE1092229B (en) * | 1958-09-23 | 1960-11-03 | Schneider Co Optische Werke | Wide-angle photographic or cinematographic lens |
DE1102435B (en) * | 1958-09-12 | 1961-03-16 | Enna Werk Optik Apelt | Photographic wide-angle lens with extremely high light intensity |
US3033082A (en) * | 1959-04-13 | 1962-05-08 | Rank Precision Ind Ltd | Inverted telephoto objectives |
GB2323934A (en) * | 1995-01-06 | 1998-10-07 | Samsung Aerospace Ind | Optical six element lens system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1063826B (en) * | 1956-11-10 | 1959-08-20 | Isco Optische Werke G M B H | Asymmetrical photographic or cinematographic lens with a large field of view |
-
1953
- 1953-08-04 GB GB2147753A patent/GB741511A/en not_active Expired
-
1954
- 1954-03-30 FR FR1097478D patent/FR1097478A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2826117A (en) * | 1955-12-12 | 1958-03-11 | Canon Camera Co | High aperture wide-angle objective for cinematographic cameras |
DE1102435B (en) * | 1958-09-12 | 1961-03-16 | Enna Werk Optik Apelt | Photographic wide-angle lens with extremely high light intensity |
DE1092229B (en) * | 1958-09-23 | 1960-11-03 | Schneider Co Optische Werke | Wide-angle photographic or cinematographic lens |
US3033082A (en) * | 1959-04-13 | 1962-05-08 | Rank Precision Ind Ltd | Inverted telephoto objectives |
GB2323934A (en) * | 1995-01-06 | 1998-10-07 | Samsung Aerospace Ind | Optical six element lens system |
Also Published As
Publication number | Publication date |
---|---|
FR1097478A (en) | 1955-07-06 |
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