GB351484A - Improvements in optical accessory apparatus for cameras - Google Patents
Improvements in optical accessory apparatus for camerasInfo
- Publication number
- GB351484A GB351484A GB960530A GB960530A GB351484A GB 351484 A GB351484 A GB 351484A GB 960530 A GB960530 A GB 960530A GB 960530 A GB960530 A GB 960530A GB 351484 A GB351484 A GB 351484A
- Authority
- GB
- United Kingdom
- Prior art keywords
- camera
- lenses
- telescopes
- cameras
- primary
- 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
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/14—Viewfinders
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Telescopes (AREA)
- Lenses (AREA)
Abstract
351,484. Camera finders ; multiplepower telescopes. WARMISHAM, A. and KAPELLA, Ltd., 104, Stoughton Street, Leicester. March 26, 1930, No. 9605. [Classes 97 (i) and 98 (i).] A finder for a camera having a number of lenses of different focal lengths, comprises a primary telescope with which can be associated alternatively one or more secondary telescopes, the latter being designed so as to embrace the same fields of view as the camera lenses. In the construction described a primary Galilean telescope A, B has mounted in front of it a turret C, rotatable on an axis D and fitted with three pairs of telescopic lenses EF, GH IJ thereby giving six possible combinations. Calculation methods for the components are described.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB960530A GB351484A (en) | 1930-03-26 | 1930-03-26 | Improvements in optical accessory apparatus for cameras |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB960530A GB351484A (en) | 1930-03-26 | 1930-03-26 | Improvements in optical accessory apparatus for cameras |
Publications (1)
Publication Number | Publication Date |
---|---|
GB351484A true GB351484A (en) | 1931-06-26 |
Family
ID=9875197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB960530A Expired GB351484A (en) | 1930-03-26 | 1930-03-26 | Improvements in optical accessory apparatus for cameras |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB351484A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2552940A (en) * | 1947-05-30 | 1951-05-15 | Pignons S A Ballaigues | Viewing device for photographic apparatus and cinematographic cameras |
US2771810A (en) * | 1954-03-27 | 1956-11-27 | Voigtlaender Ag | Reversible viewfinder for photographic cameras |
EP1946174A2 (en) * | 2005-10-14 | 2008-07-23 | Flir System, Inc. | Multiple field of view optical system |
-
1930
- 1930-03-26 GB GB960530A patent/GB351484A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2552940A (en) * | 1947-05-30 | 1951-05-15 | Pignons S A Ballaigues | Viewing device for photographic apparatus and cinematographic cameras |
US2771810A (en) * | 1954-03-27 | 1956-11-27 | Voigtlaender Ag | Reversible viewfinder for photographic cameras |
EP1946174A2 (en) * | 2005-10-14 | 2008-07-23 | Flir System, Inc. | Multiple field of view optical system |
EP1946174A4 (en) * | 2005-10-14 | 2010-12-01 | Flir Systems | Multiple field of view optical system |
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