GB544694A - Improvements in photographic objectives - Google Patents
Improvements in photographic objectivesInfo
- Publication number
- GB544694A GB544694A GB110541A GB110541A GB544694A GB 544694 A GB544694 A GB 544694A GB 110541 A GB110541 A GB 110541A GB 110541 A GB110541 A GB 110541A GB 544694 A GB544694 A GB 544694A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mirror
- meniscus lens
- aperture
- shield
- image field
- 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
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
- G02B17/0884—Catadioptric systems having a pupil corrector
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
Abstract
544,694. Photographic objectives. BRITISH THOMSON-HOUSTON CO., Ltd., and GABOR, D. Jan. 28, 1941, No. 1105. [Class 97 (i)] An objective of large aperture comprises a concave spherical mirror 1, a meniscus lens 2 with two sperical curvatures directed like that of the mirror, and a shield 3 obscuring the central part of the aperture, the meniscus lens being so dimensioned and positioned that spherical aberration and coma for the effective annular zone are substantially smaller than for the mirror above. A plans-convex or biconvex lens 4 may be provided having its surface of smaller curvature near the image field i to reduce astigmatism and field curvature, and a plane mirror 5, Fig. 3, may be placed between the spherical mirror 1 and meniscus lens 2 to serve as the shield and to direct the rays through an aperture in the mirror 1 and produce an image field i in or behind it. The lenses may be formed from a single kind of glass or other material such as quartz or rocksalt. Optical data are included in the Specification.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB110541A GB544694A (en) | 1941-01-28 | 1941-01-28 | Improvements in photographic objectives |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB110541A GB544694A (en) | 1941-01-28 | 1941-01-28 | Improvements in photographic objectives |
Publications (1)
Publication Number | Publication Date |
---|---|
GB544694A true GB544694A (en) | 1942-04-23 |
Family
ID=9716234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB110541A Expired GB544694A (en) | 1941-01-28 | 1941-01-28 | Improvements in photographic objectives |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB544694A (en) |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2420349A (en) * | 1940-10-14 | 1947-05-13 | Hartford Nat Bank & Trust Co | Schmidt's optical system comprising a correction element |
US2448699A (en) * | 1945-10-16 | 1948-09-07 | Optische Ind De Oude Delft Nv | Schmidt type image former with negative meniscus lens spherical aberration corrector |
US2449259A (en) * | 1941-07-01 | 1948-09-14 | Hartford Nat Bank & Trust Co | Schmidt type optical system with parallel plate refractive element |
US2458132A (en) * | 1945-06-19 | 1949-01-04 | Perkin Elmer Corp | Schmidt image former with spherical aberration corrector |
US2491072A (en) * | 1945-06-19 | 1949-12-13 | Perkin Elmer Corp | Schmidt television projector with spherical aberration corrector |
US2492461A (en) * | 1941-07-07 | 1949-12-27 | Optische Ind De Oude Delft Nv | Corrected schmidt type optical system |
US2504383A (en) * | 1945-08-08 | 1950-04-18 | Optische Ind De Oude Delft Nv | Reflecting type telescope having a spherical mirror |
US2515873A (en) * | 1943-07-10 | 1950-07-18 | Helm Carl Henrik | Photographic camera objectives of the schmidt type |
US2520633A (en) * | 1948-10-20 | 1950-08-29 | Polaroid Corp | Optical system |
US2520636A (en) * | 1949-05-07 | 1950-08-29 | Polaroid Corp | Optical objective |
US2520635A (en) * | 1949-03-10 | 1950-08-29 | Polaroid Corp | Optical system |
US2568943A (en) * | 1947-01-06 | 1951-09-25 | Optische Ind De Oude Delft Nv | X-ray camera and system |
US2571657A (en) * | 1945-04-27 | 1951-10-16 | Eastman Kodak Co | Catadioptric lens system |
US2576011A (en) * | 1950-07-11 | 1951-11-20 | Polaroid Corp | Catadioptric optical system |
US2585009A (en) * | 1945-08-02 | 1952-02-12 | Farnsworth Res Corp | Concentric optical system |
US2608129A (en) * | 1951-03-26 | 1952-08-26 | Northrop Aircraft Inc | Two-mirror telescope focusing system |
US2661658A (en) * | 1948-07-19 | 1953-12-08 | Ass Elect Ind | Optical system for increasing the working distances of microscope objectives |
US2669709A (en) * | 1950-10-19 | 1954-02-16 | American Optical Corp | Image projection optical system |
US2682197A (en) * | 1951-08-13 | 1954-06-29 | American Optical Corp | Folded reflecting optical system of the schmidt type |
US2685820A (en) * | 1951-05-03 | 1954-08-10 | Us Army | Imaging optical system of the schmidt type |
US2730013A (en) * | 1950-09-02 | 1956-01-10 | Leitz Ernst Gmbh | Reflecting lens objective |
US2749801A (en) * | 1951-11-09 | 1956-06-12 | American Optical Corp | Reflective optical projection systems |
US2793564A (en) * | 1952-04-29 | 1957-05-28 | Optische Ind De Oude Delft Nv | Optical image forming lens and mirror system comprising a spherical mirror and two meniscus corrector lenses |
US2821107A (en) * | 1952-09-12 | 1958-01-28 | Optische Ind De Oude Delft Nv | Optical mirror system comprising at least one conic lens corrector element |
US2883908A (en) * | 1957-06-20 | 1959-04-28 | Jacob C Copeland | Reflecting and magnifying viewer |
DE1064734B (en) * | 1953-09-23 | 1959-09-03 | Optische Ind De Oude Delft Nv | Optical imaging system |
DE1086910B (en) * | 1952-05-29 | 1960-08-11 | Centre Nat Rech Scient | Mirror lens for microscopes |
US3191497A (en) * | 1960-07-23 | 1965-06-29 | Canon Camera Co | Catadioptric optical system of large relative aperture |
EP0489378A1 (en) * | 1990-12-04 | 1992-06-10 | Internatinal Technology Exchange Corporation | Achromatic lens |
-
1941
- 1941-01-28 GB GB110541A patent/GB544694A/en not_active Expired
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2420349A (en) * | 1940-10-14 | 1947-05-13 | Hartford Nat Bank & Trust Co | Schmidt's optical system comprising a correction element |
US2449259A (en) * | 1941-07-01 | 1948-09-14 | Hartford Nat Bank & Trust Co | Schmidt type optical system with parallel plate refractive element |
US2492461A (en) * | 1941-07-07 | 1949-12-27 | Optische Ind De Oude Delft Nv | Corrected schmidt type optical system |
US2515873A (en) * | 1943-07-10 | 1950-07-18 | Helm Carl Henrik | Photographic camera objectives of the schmidt type |
US2571657A (en) * | 1945-04-27 | 1951-10-16 | Eastman Kodak Co | Catadioptric lens system |
US2458132A (en) * | 1945-06-19 | 1949-01-04 | Perkin Elmer Corp | Schmidt image former with spherical aberration corrector |
US2491072A (en) * | 1945-06-19 | 1949-12-13 | Perkin Elmer Corp | Schmidt television projector with spherical aberration corrector |
US2585009A (en) * | 1945-08-02 | 1952-02-12 | Farnsworth Res Corp | Concentric optical system |
US2504383A (en) * | 1945-08-08 | 1950-04-18 | Optische Ind De Oude Delft Nv | Reflecting type telescope having a spherical mirror |
US2448699A (en) * | 1945-10-16 | 1948-09-07 | Optische Ind De Oude Delft Nv | Schmidt type image former with negative meniscus lens spherical aberration corrector |
US2568943A (en) * | 1947-01-06 | 1951-09-25 | Optische Ind De Oude Delft Nv | X-ray camera and system |
US2661658A (en) * | 1948-07-19 | 1953-12-08 | Ass Elect Ind | Optical system for increasing the working distances of microscope objectives |
US2520633A (en) * | 1948-10-20 | 1950-08-29 | Polaroid Corp | Optical system |
US2520635A (en) * | 1949-03-10 | 1950-08-29 | Polaroid Corp | Optical system |
US2520636A (en) * | 1949-05-07 | 1950-08-29 | Polaroid Corp | Optical objective |
US2576011A (en) * | 1950-07-11 | 1951-11-20 | Polaroid Corp | Catadioptric optical system |
US2730013A (en) * | 1950-09-02 | 1956-01-10 | Leitz Ernst Gmbh | Reflecting lens objective |
US2669709A (en) * | 1950-10-19 | 1954-02-16 | American Optical Corp | Image projection optical system |
US2608129A (en) * | 1951-03-26 | 1952-08-26 | Northrop Aircraft Inc | Two-mirror telescope focusing system |
US2685820A (en) * | 1951-05-03 | 1954-08-10 | Us Army | Imaging optical system of the schmidt type |
US2682197A (en) * | 1951-08-13 | 1954-06-29 | American Optical Corp | Folded reflecting optical system of the schmidt type |
US2749801A (en) * | 1951-11-09 | 1956-06-12 | American Optical Corp | Reflective optical projection systems |
US2793564A (en) * | 1952-04-29 | 1957-05-28 | Optische Ind De Oude Delft Nv | Optical image forming lens and mirror system comprising a spherical mirror and two meniscus corrector lenses |
DE1086910B (en) * | 1952-05-29 | 1960-08-11 | Centre Nat Rech Scient | Mirror lens for microscopes |
US2821107A (en) * | 1952-09-12 | 1958-01-28 | Optische Ind De Oude Delft Nv | Optical mirror system comprising at least one conic lens corrector element |
DE1064734B (en) * | 1953-09-23 | 1959-09-03 | Optische Ind De Oude Delft Nv | Optical imaging system |
US2883908A (en) * | 1957-06-20 | 1959-04-28 | Jacob C Copeland | Reflecting and magnifying viewer |
US3191497A (en) * | 1960-07-23 | 1965-06-29 | Canon Camera Co | Catadioptric optical system of large relative aperture |
EP0489378A1 (en) * | 1990-12-04 | 1992-06-10 | Internatinal Technology Exchange Corporation | Achromatic lens |
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