GB773881A - Improvements in or relating to optical reflectors - Google Patents
Improvements in or relating to optical reflectorsInfo
- Publication number
- GB773881A GB773881A GB3487353A GB3487353A GB773881A GB 773881 A GB773881 A GB 773881A GB 3487353 A GB3487353 A GB 3487353A GB 3487353 A GB3487353 A GB 3487353A GB 773881 A GB773881 A GB 773881A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflecting
- reflecting surface
- domed
- light
- dec
- 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
- G02B5/12—Reflex reflectors
- G02B5/126—Reflex reflectors including curved refracting surface
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
- Lenses (AREA)
Abstract
773,881. Reflex reflectors. WARD, W. G. Dec. 14, 1954 [Dec. 15, 1953; July 14, 1954], No. 34873/53, No. 20613/54. Class 97(1) A reflector comprises a domed part, an annular reflecting surface coaxial therewith, and a second reflecting surface, light incident on the domed surface generally at right angles to the axis being reflected by the annular reflecting surface on to the second reflecting surface on which it is incident normally so as to be reflected back along its original path. As shown the domed surface a which may be spherical or ellipsoidal is coaxial with an annular reflecting surface b, which may be composed of two conical surfaces, which reflects the light to the incident normally on the second surface, which may be curved or plane. The surface c at the base of the reflector may be curved and may be clear or semi-reflecting to allow light from a source adjacent the base to pass 'therethrough. In a modification the surface e is perpendicular to the axis and carried reflecting tetrahedra.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3487353A GB773881A (en) | 1953-12-15 | 1953-12-15 | Improvements in or relating to optical reflectors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3487353A GB773881A (en) | 1953-12-15 | 1953-12-15 | Improvements in or relating to optical reflectors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB773881A true GB773881A (en) | 1957-05-01 |
Family
ID=10370980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3487353A Expired GB773881A (en) | 1953-12-15 | 1953-12-15 | Improvements in or relating to optical reflectors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB773881A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1099403B (en) * | 1958-08-02 | 1961-02-09 | Telefonbau & Normalzeit Gmbh | Process for the production of mimic diagrams |
| US3981557A (en) * | 1973-08-29 | 1976-09-21 | Ludwig Eigenmann | Light retroreflective system for sign surfaces |
| GB2207526A (en) * | 1987-07-27 | 1989-02-01 | Itw New Zealand Ltd | Retro-reflector system |
-
1953
- 1953-12-15 GB GB3487353A patent/GB773881A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1099403B (en) * | 1958-08-02 | 1961-02-09 | Telefonbau & Normalzeit Gmbh | Process for the production of mimic diagrams |
| US3981557A (en) * | 1973-08-29 | 1976-09-21 | Ludwig Eigenmann | Light retroreflective system for sign surfaces |
| GB2207526A (en) * | 1987-07-27 | 1989-02-01 | Itw New Zealand Ltd | Retro-reflector system |
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