GB969071A - Improvements in or relating to optical viewing systems - Google Patents
Improvements in or relating to optical viewing systemsInfo
- Publication number
- GB969071A GB969071A GB1030862A GB1030862A GB969071A GB 969071 A GB969071 A GB 969071A GB 1030862 A GB1030862 A GB 1030862A GB 1030862 A GB1030862 A GB 1030862A GB 969071 A GB969071 A GB 969071A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- relating
- optical viewing
- ribs
- viewing systems
- 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
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
969,071. Viewing screens. BARR & STROUD Ltd. March 17, 1962, No, 10308/62. Heading G2J. An optical viewing system has a polished screen of translucent material extending at right angles to the optic axis of the system, the screen having optically deviating elements comprising ribs having plane sides and curved crests. As shown, the screen comprises a plate 10 having ribs 11, the crests 13 and troughs 14 having cylindrical surfaces and being joined by plane surfaces 12. The screen may be applied to a periscopic viewing system Figs 3, 4 (not shown).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1030862A GB969071A (en) | 1962-03-16 | 1962-03-16 | Improvements in or relating to optical viewing systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1030862A GB969071A (en) | 1962-03-16 | 1962-03-16 | Improvements in or relating to optical viewing systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB969071A true GB969071A (en) | 1964-09-09 |
Family
ID=9965479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1030862A Expired GB969071A (en) | 1962-03-16 | 1962-03-16 | Improvements in or relating to optical viewing systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB969071A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4012109A (en) * | 1968-12-12 | 1977-03-15 | Vision Engineering Limited | High magnification optical apparatus |
GB2169419A (en) * | 1985-01-04 | 1986-07-09 | Lee Ah Soon | Inspection device |
-
1962
- 1962-03-16 GB GB1030862A patent/GB969071A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4012109A (en) * | 1968-12-12 | 1977-03-15 | Vision Engineering Limited | High magnification optical apparatus |
GB2169419A (en) * | 1985-01-04 | 1986-07-09 | Lee Ah Soon | Inspection device |
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