GB458509A - Improvements in or relating to anti-dazzle screens and transparencies - Google Patents
Improvements in or relating to anti-dazzle screens and transparenciesInfo
- Publication number
- GB458509A GB458509A GB1689535A GB1689535A GB458509A GB 458509 A GB458509 A GB 458509A GB 1689535 A GB1689535 A GB 1689535A GB 1689535 A GB1689535 A GB 1689535A GB 458509 A GB458509 A GB 458509A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vehicle
- antidazzle
- screen
- pile
- viewed
- 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
- 239000000463 material Substances 0.000 abstract 3
- 229920002160 Celluloid Polymers 0.000 abstract 2
- 239000012780 transparent material Substances 0.000 abstract 2
- 229920005439 Perspex® Polymers 0.000 abstract 1
- 239000000549 coloured material Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000004926 polymethyl methacrylate Substances 0.000 abstract 1
- 239000010409 thin film Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
- B60J3/02—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in position
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
458,509. Vehicle antidazzle screens; transparencies; vehicle lamps. COOKE, A. G., 101, Brondesbury Road, Kilburn, London. June 12, 1935, No. 16895. [Class 103 (ii)] [See also Groups X and XI] A transparency or an antidazzle screen adapted to be placed in front of a vehicle lamp or on or adjacent to a vehicle windscreen and which is substantially transparentwhen viewed in one direction and semi-opaque when viewed in a different direction, comprises a composite thick plate of transparent refracting material composed of a plurality of superposed, parallelogram-section, prismatic elements of glass, celluloid, the material known under the Registered Trade Mark " Perspex," or other transparent material, the shorter diagonal of each element being substantially equal and perpendicular to the shorter sides while the adjacent surfaces 3 of the elements are separated by a thin film or sheet 5 of semi-opaque material such as blue or amber-coloured celluloid. The angle between the faces 2, 3 of each element is between 42 and 45‹. The screen may be formed from a pile of slabs of transparent material interleaved with thin sheets of coloured material, by cutting the pile at an angle of 45<0> into slices having a thickness 1À414 times that of each slab. When used in connection with a vehicle windscreen the required effect is obtained by movement of the driver's head or by rotating the antidazzle screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1689535A GB458509A (en) | 1935-06-12 | 1935-06-12 | Improvements in or relating to anti-dazzle screens and transparencies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1689535A GB458509A (en) | 1935-06-12 | 1935-06-12 | Improvements in or relating to anti-dazzle screens and transparencies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB458509A true GB458509A (en) | 1936-12-14 |
Family
ID=10085624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1689535A Expired GB458509A (en) | 1935-06-12 | 1935-06-12 | Improvements in or relating to anti-dazzle screens and transparencies |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB458509A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2722862A (en) * | 1949-09-12 | 1955-11-08 | Otto G Schwede | Angular discriminating optical device |
| US2731872A (en) * | 1956-01-24 | schwede | ||
| US2749794A (en) * | 1953-04-24 | 1956-06-12 | Corning Glass Works | Illuminating glassware and method of making it |
| US2837006A (en) * | 1955-12-30 | 1958-06-03 | Otto G Schwede | Angular discriminating optical viewing device |
| US2931269A (en) * | 1954-12-17 | 1960-04-05 | Anne Henri Jacques De La Genie | Projection screen with reflex light-transmission |
| US2976759A (en) * | 1958-07-30 | 1961-03-28 | Keith T Bleuer | Anti-glare device for vehicles |
| US3254556A (en) * | 1961-05-29 | 1966-06-07 | Coleman Instr Corp | Composite optical prism unit |
-
1935
- 1935-06-12 GB GB1689535A patent/GB458509A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2731872A (en) * | 1956-01-24 | schwede | ||
| US2722862A (en) * | 1949-09-12 | 1955-11-08 | Otto G Schwede | Angular discriminating optical device |
| US2749794A (en) * | 1953-04-24 | 1956-06-12 | Corning Glass Works | Illuminating glassware and method of making it |
| US2931269A (en) * | 1954-12-17 | 1960-04-05 | Anne Henri Jacques De La Genie | Projection screen with reflex light-transmission |
| US2837006A (en) * | 1955-12-30 | 1958-06-03 | Otto G Schwede | Angular discriminating optical viewing device |
| US2976759A (en) * | 1958-07-30 | 1961-03-28 | Keith T Bleuer | Anti-glare device for vehicles |
| US3254556A (en) * | 1961-05-29 | 1966-06-07 | Coleman Instr Corp | Composite optical prism unit |
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