GB491707A - Improvements in reflecting systems having two plane reflecting surfaces - Google Patents
Improvements in reflecting systems having two plane reflecting surfacesInfo
- Publication number
- GB491707A GB491707A GB7444/38A GB744438A GB491707A GB 491707 A GB491707 A GB 491707A GB 7444/38 A GB7444/38 A GB 7444/38A GB 744438 A GB744438 A GB 744438A GB 491707 A GB491707 A GB 491707A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plane
- angles
- reflecting surfaces
- reflecting
- prism
- 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
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
Abstract
491,707. Optical systems. ZEISS, C., [Firm of]. March 10, 1938, No. 7444. Convention date, March 18, 1937. [Class 97 (i)] In an optical square comprising two plane reflecting surfaces for deviating at right-angles a ray pencil the plane of which intersects the reflecting surfaces in two straight lines including an angle of 45‹, the two reflecting surfaces are inclined at equal and opposite angles to the plane of the entering ray pencil, in order to produce deviation of the rays in a plane at rightangles to that in which they are deviated at right-angles. When the optical square consists of a pentagonal , prism, the reflecting surfaces of the prism are inclined as above and preferably the exit surface is so inclined that the emergent rays meet it at right-angles. The Figure shows a form in which the deviation in altitude can be varied, the mounts 7, 8 of the mirrors 5, 6 being mounted on shafts 9, 10, inclined at 45‹ to each other and connected by gearing 11, 12 so as to rotate through equal angles in opposite directions.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE491707X | 1937-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB491707A true GB491707A (en) | 1938-09-07 |
Family
ID=6544305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7444/38A Expired GB491707A (en) | 1937-03-18 | 1938-03-10 | Improvements in reflecting systems having two plane reflecting surfaces |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB491707A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441818A (en) * | 1980-04-23 | 1984-04-10 | Pharos Ab | Deflection unit |
| GB2233784A (en) * | 1989-07-04 | 1991-01-16 | Renishaw Plc | Laser beam deflector comprising two reflectors |
| US5991103A (en) * | 1994-10-21 | 1999-11-23 | Olympus Optical Co., Ltd. | Prism optical system |
-
1938
- 1938-03-10 GB GB7444/38A patent/GB491707A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441818A (en) * | 1980-04-23 | 1984-04-10 | Pharos Ab | Deflection unit |
| GB2233784A (en) * | 1989-07-04 | 1991-01-16 | Renishaw Plc | Laser beam deflector comprising two reflectors |
| GB2233784B (en) * | 1989-07-04 | 1993-08-25 | Renishaw Plc | Beam deflector |
| US5991103A (en) * | 1994-10-21 | 1999-11-23 | Olympus Optical Co., Ltd. | Prism optical system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3191146A (en) | Visual landing aid for airplanes | |
| GB491707A (en) | Improvements in reflecting systems having two plane reflecting surfaces | |
| GB425552A (en) | Improvements relating to the decomposition and composition of pictures particularly in television | |
| US2058676A (en) | Telescope and prism therefor | |
| GB503167A (en) | Improvements in monochromators | |
| GB606065A (en) | Improvements in stereoscopic viewing devices | |
| GB956543A (en) | Two-observer microscope equipment particularly for surgical operations | |
| GB562240A (en) | Optical sighting or viewing devices | |
| GB559748A (en) | Improvements in and relating to combination angle gauges | |
| US2119545A (en) | Prism | |
| GB292113A (en) | ||
| GB344330A (en) | ||
| DE838833C (en) | Inverting prism | |
| GB463304A (en) | Improvements in or relating to reflectors | |
| GB335038A (en) | Improvements in optical projecting apparatus | |
| GB569118A (en) | Improvements in or relating to optical apparatus | |
| GB503222A (en) | Improvements in light-dividing prism systems for colour photography or the like | |
| GB578925A (en) | Improvements in or relating to optical collimating systems | |
| GB711814A (en) | Improvements in or relating to beam-splitting or beam-combining devices using optical interference coatings | |
| POLAROID | Erratum: Stereoscopic Drawings | |
| GB1412939A (en) | Optical viewing systems | |
| GB129089A (en) | Erecting Prisms for Telescopes and other Optical Instruments. | |
| GB1154639A (en) | Beam Divider for Opthalmometers. | |
| GB548159A (en) | Improvements in or relating to stereoscopic optical systems | |
| Barus | Pendulum Coincidences Determined by Shadow Reënforcements, Shadow Micrometry, etc |