SE7604520L - PHOTOCHROME LENSES - Google Patents
PHOTOCHROME LENSESInfo
- Publication number
- SE7604520L SE7604520L SE7604520A SE7604520A SE7604520L SE 7604520 L SE7604520 L SE 7604520L SE 7604520 A SE7604520 A SE 7604520A SE 7604520 A SE7604520 A SE 7604520A SE 7604520 L SE7604520 L SE 7604520L
- Authority
- SE
- Sweden
- Prior art keywords
- lens
- photochromic
- lenses
- phototropic
- strain point
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/04—Compositions for glass with special properties for photosensitive glass
- C03C4/06—Compositions for glass with special properties for photosensitive glass for phototropic or photochromic glass
-
- 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
- G02C7/102—Photochromic filters
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
- Eyeglasses (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Surface Treatment Of Glass (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
PHOTOCHROMIC GRADIENT LENSES The invention achieves local variation, or a continuous gradation, in photochromic or phototropic properties across the face of glass lenses and lens blanks, especially those of ophthalmic quality. The lenses and lens blanks contain all those ingredients required to produce photochromic o? phototropic behavior. They are exposed to a locally variable temperature field or environment, in such manner as to, in at least one portion of the lens or lens blank cause the temperature therein to exceed the strain point but not the softening point of the glass. In other portions of the lens or lens blank the temperature is below the strain point, thus causing development of phototropic or photochromic behavior only in those portions of the lens or lens blank exposed to the temperatures above the strain point.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62468875A | 1975-10-22 | 1975-10-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7604520L true SE7604520L (en) | 1977-04-23 |
| SE425032B SE425032B (en) | 1982-08-23 |
Family
ID=24502936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7604520A SE425032B (en) | 1975-10-22 | 1976-04-20 | PROCEDURE FOR PREPARING PHOTOCROMA LENSES |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS595538B2 (en) |
| BE (1) | BE841167A (en) |
| BR (1) | BR7604007A (en) |
| CA (1) | CA1061618A (en) |
| DE (1) | DE2617665A1 (en) |
| ES (1) | ES450600A1 (en) |
| FR (1) | FR2328668A1 (en) |
| GB (1) | GB1548744A (en) |
| IT (1) | IT1058165B (en) |
| MX (1) | MX143311A (en) |
| NL (1) | NL182395C (en) |
| SE (1) | SE425032B (en) |
| ZA (1) | ZA762173B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4160655A (en) * | 1977-12-19 | 1979-07-10 | Corning Glass Works | Process for making gradient photochromic glass articles |
| JPH041837U (en) * | 1990-04-17 | 1992-01-09 | ||
| JP2003231413A (en) * | 2002-07-22 | 2003-08-19 | Akiyoshi Sugimoto | Car |
| FR2923917B1 (en) * | 2007-11-16 | 2010-11-26 | Christian Dalloz Sunoptics | NOVEL TRANSPARENT OPTICAL SUBSTRATE, ITS OBTAINING METHOD AND ITS APPLICATION AS EYE |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2770922A (en) * | 1952-05-19 | 1956-11-20 | Pittsburgh Plate Glass Co | Radiation colorable chromium glass |
| US3419370A (en) * | 1965-11-22 | 1968-12-31 | Corning Glass Works | Method of producing a photochromic glass and resulting article |
-
1976
- 1976-04-12 ZA ZA762173A patent/ZA762173B/en unknown
- 1976-04-20 SE SE7604520A patent/SE425032B/en not_active IP Right Cessation
- 1976-04-20 IT IT49092/76A patent/IT1058165B/en active
- 1976-04-22 DE DE19762617665 patent/DE2617665A1/en active Granted
- 1976-04-26 CA CA251,044A patent/CA1061618A/en not_active Expired
- 1976-04-27 BE BE166487A patent/BE841167A/en not_active IP Right Cessation
- 1976-04-28 GB GB17372/76A patent/GB1548744A/en not_active Expired
- 1976-04-28 JP JP51047928A patent/JPS595538B2/en not_active Expired
- 1976-05-03 MX MX164537A patent/MX143311A/en unknown
- 1976-05-04 FR FR7613214A patent/FR2328668A1/en active Granted
- 1976-05-20 NL NLAANVRAGE7605399,A patent/NL182395C/en not_active IP Right Cessation
- 1976-06-22 BR BR7604007A patent/BR7604007A/en unknown
- 1976-08-10 ES ES450600A patent/ES450600A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2617665A1 (en) | 1977-04-28 |
| CA1061618A (en) | 1979-09-04 |
| DE2617665C2 (en) | 1987-01-22 |
| FR2328668A1 (en) | 1977-05-20 |
| IT1058165B (en) | 1982-04-10 |
| FR2328668B1 (en) | 1979-04-20 |
| JPS595538B2 (en) | 1984-02-06 |
| NL182395B (en) | 1987-10-01 |
| GB1548744A (en) | 1979-07-18 |
| JPS5251412A (en) | 1977-04-25 |
| BE841167A (en) | 1976-08-16 |
| SE425032B (en) | 1982-08-23 |
| NL182395C (en) | 1988-03-01 |
| MX143311A (en) | 1981-04-14 |
| ZA762173B (en) | 1977-04-27 |
| BR7604007A (en) | 1977-06-28 |
| NL7605399A (en) | 1977-04-26 |
| ES450600A1 (en) | 1978-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
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