GB487546A - Improvements in ophthalmic lenses - Google Patents
Improvements in ophthalmic lensesInfo
- Publication number
- GB487546A GB487546A GB1665537A GB1665537A GB487546A GB 487546 A GB487546 A GB 487546A GB 1665537 A GB1665537 A GB 1665537A GB 1665537 A GB1665537 A GB 1665537A GB 487546 A GB487546 A GB 487546A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diopters
- refraction
- refracting power
- power
- lens
- 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
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
Abstract
487,546. Spectacle lenses. TENNANT, W. J. (American Optical Co.) June 15, 1937, No. 16655. [Class 97 (i)] The two parts 1, 3 of an achromatic lens of strong positive power, particularly for use with an aphakic eye, are secured together at complemental surfaces 2 intersecting a continuous optical surface 4 and have substantially the same indices of refraction but different dispersive factors. The part 1 may be a flint glass (index of refraction 1À61 and reciprocal relative dispersion 36) with a countersink surface 2 having a refracting power of 19À5 cliopters and a rear surface 5 having a refracting power of minus 3 diopters. The smaller part 3 may be a barium crown glass (index of refraction 1À61 and reciprocal relative dispersion 50) and the common surface 4 may have a refracting power of 14À07 diopters. The resultant power of the lens is plus 14 diopters and the resultant chromatic aberration less than 1/10 diopter. The compound lens may have a toric surface preferably on the ocular side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1665537A GB487546A (en) | 1937-06-15 | 1937-06-15 | Improvements in ophthalmic lenses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1665537A GB487546A (en) | 1937-06-15 | 1937-06-15 | Improvements in ophthalmic lenses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB487546A true GB487546A (en) | 1938-06-22 |
Family
ID=10081224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1665537A Expired GB487546A (en) | 1937-06-15 | 1937-06-15 | Improvements in ophthalmic lenses |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB487546A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012042030A1 (en) * | 2010-09-30 | 2012-04-05 | Carl Zeiss Vision Gmbh | Optical lens, in particular for use as a spectacle lens |
| EP2645154A1 (en) | 2012-03-29 | 2013-10-02 | Carl Zeiss Vision International GmbH | Procedure for designing a spectacle lens and spectacle lens |
| EP3311993A1 (en) | 2016-10-20 | 2018-04-25 | Carl Zeiss Vision International GmbH | Spectacle glass and method for its production |
| IT201900002421A1 (en) * | 2019-02-19 | 2020-08-19 | Caterina Tramontana | VISION DEVICE FOR ALBINI WITH IMPROVED VISUAL ACUITY |
-
1937
- 1937-06-15 GB GB1665537A patent/GB487546A/en not_active Expired
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103380395B (en) * | 2010-09-30 | 2015-02-18 | 卡尔蔡司光学国际有限公司 | Optical lens, in particular for use as a spectacle lens |
| DE102010047846A1 (en) | 2010-09-30 | 2012-04-05 | Carl Zeiss Vision Gmbh | Optical lens, in particular for use as a spectacle lens |
| US9417461B2 (en) | 2010-09-30 | 2016-08-16 | Carl Zeiss Vision International Gmbh | Optical lens, in particular for use as a spectacle lens |
| WO2012042030A1 (en) * | 2010-09-30 | 2012-04-05 | Carl Zeiss Vision Gmbh | Optical lens, in particular for use as a spectacle lens |
| CN103380395A (en) * | 2010-09-30 | 2013-10-30 | 卡尔蔡司光学国际有限公司 | Optical lens, in particular for use as a spectacle lens |
| DE102012102743A1 (en) | 2012-03-29 | 2013-10-02 | Carl Zeiss Vision International Gmbh | Method for laying out a spectacle lens and spectacle lens |
| DE102012102743B4 (en) * | 2012-03-29 | 2014-09-11 | Carl Zeiss Vision International Gmbh | Method for laying out a spectacle lens and spectacle lens |
| US9176329B2 (en) | 2012-03-29 | 2015-11-03 | Carl Zeiss Vision International Gmbh | Method for designing a spectacle lens and spectacle lens |
| EP2645154A1 (en) | 2012-03-29 | 2013-10-02 | Carl Zeiss Vision International GmbH | Procedure for designing a spectacle lens and spectacle lens |
| EP3311993A1 (en) | 2016-10-20 | 2018-04-25 | Carl Zeiss Vision International GmbH | Spectacle glass and method for its production |
| WO2018073295A1 (en) | 2016-10-20 | 2018-04-26 | Carl Zeiss Vision International Gmbh | Spectacle lens and method for producing same |
| US11543680B2 (en) | 2016-10-20 | 2023-01-03 | Carl Zeiss Vision International Gmbh | Spectacle lens and method for producing same |
| IT201900002421A1 (en) * | 2019-02-19 | 2020-08-19 | Caterina Tramontana | VISION DEVICE FOR ALBINI WITH IMPROVED VISUAL ACUITY |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB680400A (en) | Ophthalmic lens for spectacles affording increased field of vision | |
| GB487546A (en) | Improvements in ophthalmic lenses | |
| US2025893A (en) | Telescopic bifocal lens | |
| US2517609A (en) | Multifocal aphakic lens | |
| US2198868A (en) | Contact lens | |
| GB521770A (en) | Telescopic ophthalmic lenses | |
| USRE17435E (en) | A voluntary associa | |
| US1483510A (en) | Achromatic bifocal lens made of two pieces of glass | |
| US2057179A (en) | Ophthalmic lens and method of making same | |
| GB580242A (en) | Improvements in or relating to multiple focus spectacle and like lenses | |
| US2087270A (en) | Ophthalmic lens | |
| GB488828A (en) | Improvements in lenses | |
| GB439302A (en) | Lenses | |
| US1593198A (en) | Ophthalmic lens | |
| GB680044A (en) | Improvements in ophthalmic lenses | |
| GB259502A (en) | Improvements in ophthalmic lenses | |
| GB270906A (en) | Improvements in and relating to ophthalmic lenses | |
| US1397920A (en) | Bifocal lens | |
| GB433384A (en) | Improvements in or relating to eye-protectors | |
| GB412081A (en) | Improvements in eyeglasses for correcting ocular image differences | |
| GB429338A (en) | Ophthalmic lenses | |
| GB226894A (en) | Improvements in or relating to means, such as lenses for spectacles and eye-glasses,for assisting or correcting defective vision | |
| Neumueller | The correction lens | |
| GB500553A (en) | Ophthalmic mountings | |
| GB304074A (en) | Improvements in and relating to unifocal eye protecting lens |