GB551474A - Improvements in or relating to protective spectacles - Google Patents
Improvements in or relating to protective spectaclesInfo
- Publication number
- GB551474A GB551474A GB10629/41A GB1062941A GB551474A GB 551474 A GB551474 A GB 551474A GB 10629/41 A GB10629/41 A GB 10629/41A GB 1062941 A GB1062941 A GB 1062941A GB 551474 A GB551474 A GB 551474A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layers
- embodied
- gelatine
- dye
- glass
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
- G02C7/108—Colouring materials
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C2202/00—Generic optical aspects applicable to one or more of the subgroups of G02C7/00
- G02C2202/16—Laminated or compound lenses
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Laminated Bodies (AREA)
- Optical Filters (AREA)
Abstract
551,474. Colour filters. DUFAY-CHROMEX, Ltd., and CLYNE, A. CORNWELL-. Aug. 20, 1941, No. 10629. [Class 97 (i)] Ultra-violet filters, for use in goggles or otherwise, comprise laminated glass embodying, in addition to a normal interlayer, one or more intermediate layers of gelatine in which is incorporated a dye or dyes absorbent of ultraviolet light ; a dye imparting a neutral grey tint to the filter may also be embodied in the same or other gelatine layers, and gelatine layers having dyes as in Specification 551,473 may also be embodied. The ultra-violet absorbing dye may be #-naphtholdisulphonic acid or #-methyl unchalliferone ; the neutral grey may be produced by higrosine K. The dyed gelatin 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 |
---|---|---|---|
GB10629/41A GB551474A (en) | 1941-08-20 | 1941-08-20 | Improvements in or relating to protective spectacles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB10629/41A GB551474A (en) | 1941-08-20 | 1941-08-20 | Improvements in or relating to protective spectacles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB551474A true GB551474A (en) | 1943-02-24 |
Family
ID=9971383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10629/41A Expired GB551474A (en) | 1941-08-20 | 1941-08-20 | Improvements in or relating to protective spectacles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB551474A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2508295A (en) * | 1945-11-08 | 1950-05-16 | Gen Aniline & Film Corp | Photographic filter layer for absorbing ultraviolet radiations |
US4200360A (en) * | 1976-03-05 | 1980-04-29 | Mutzhas Maximilian F | Filter for protection against radiation, especially with regard to direct pigmentation by solar radiation |
-
1941
- 1941-08-20 GB GB10629/41A patent/GB551474A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2508295A (en) * | 1945-11-08 | 1950-05-16 | Gen Aniline & Film Corp | Photographic filter layer for absorbing ultraviolet radiations |
US4200360A (en) * | 1976-03-05 | 1980-04-29 | Mutzhas Maximilian F | Filter for protection against radiation, especially with regard to direct pigmentation by solar radiation |
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