GB551473A - Improvements in or relating to light filters for increasing visibility - Google Patents
Improvements in or relating to light filters for increasing visibilityInfo
- Publication number
- GB551473A GB551473A GB1062841A GB1062841A GB551473A GB 551473 A GB551473 A GB 551473A GB 1062841 A GB1062841 A GB 1062841A GB 1062841 A GB1062841 A GB 1062841A GB 551473 A GB551473 A GB 551473A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- interlayer
- transmissions
- relating
- gelatine
- 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
- G02B5/20—Filters
- G02B5/22—Absorbing filters
- G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laminated Bodies (AREA)
- Optical Filters (AREA)
Abstract
551,473. Colour filters. DUFAY-CHROMEX Ltd., and CLYNE, A. CORNWELL-. Aug. 20, 1941, No. 10628. [Class 97 (i)] Colour filters, for use in goggles or otherwise, to increase the visibility of observed objects,- comprises laminated glass embodying, in addition to a normal interlayer, one or more intermediate layers of gelatine in which is incorporated one or more dyes strongly transmitting at two or three separated parts of the visible spectrum. Rose Bengale may be used for two transmissions, or a combination of coomassie violet, quinoline yellow, and uranine for three transmissions. The dyed gelatine may be coated on to one or more glass layers, on to a normal interlayer, or on to both glass and interlayer, or may be made up as a separate sheet or sheets subsequently embodied in the laminated glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1062841A GB551473A (en) | 1941-08-20 | 1941-08-20 | Improvements in or relating to light filters for increasing visibility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1062841A GB551473A (en) | 1941-08-20 | 1941-08-20 | Improvements in or relating to light filters for increasing visibility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB551473A true GB551473A (en) | 1943-02-24 |
Family
ID=9971362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1062841A Expired GB551473A (en) | 1941-08-20 | 1941-08-20 | Improvements in or relating to light filters for increasing visibility |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB551473A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2450746A (en) * | 1948-10-05 | Safelight filter | ||
| EP3130570A4 (en) * | 2014-04-07 | 2017-11-08 | Sekisui Chemical Co., Ltd. | Intermediate film for laminated glass, and laminated glass |
| WO2018029014A1 (en) * | 2016-08-10 | 2018-02-15 | Cambridge Display Technology Limited | Light filter and sensor |
-
1941
- 1941-08-20 GB GB1062841A patent/GB551473A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2450746A (en) * | 1948-10-05 | Safelight filter | ||
| EP3130570A4 (en) * | 2014-04-07 | 2017-11-08 | Sekisui Chemical Co., Ltd. | Intermediate film for laminated glass, and laminated glass |
| US10569509B2 (en) | 2014-04-07 | 2020-02-25 | Sekisui Chemical Co., Ltd. | Intermediate film for laminated glass having coloring matter with specified maximum absorption wavelengths, and laminated glass |
| WO2018029014A1 (en) * | 2016-08-10 | 2018-02-15 | Cambridge Display Technology Limited | Light filter and sensor |
| CN109564162A (en) * | 2016-08-10 | 2019-04-02 | 剑桥显示技术有限公司 | Light filtering body and sensor |
| US20190219750A1 (en) * | 2016-08-10 | 2019-07-18 | Cambridge Display Technology Limited | Light filter and sensor |
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