IE50992B1 - Progressive power ophthalmic lenses - Google Patents
Progressive power ophthalmic lensesInfo
- Publication number
- IE50992B1 IE50992B1 IE553/81A IE55381A IE50992B1 IE 50992 B1 IE50992 B1 IE 50992B1 IE 553/81 A IE553/81 A IE 553/81A IE 55381 A IE55381 A IE 55381A IE 50992 B1 IE50992 B1 IE 50992B1
- Authority
- IE
- Ireland
- Prior art keywords
- progressive
- lens
- curvature
- meridian
- distance
- Prior art date
Links
- 230000000750 progressive effect Effects 0.000 title claims abstract description 68
- 230000004075 alteration Effects 0.000 claims abstract description 22
- 208000001491 myopia Diseases 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 9
- 238000009827 uniform distribution Methods 0.000 abstract description 4
- 238000012937 correction Methods 0.000 abstract description 3
- 201000010041 presbyopia Diseases 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 201000009310 astigmatism Diseases 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004424 eye movement Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229940023490 ophthalmic product Drugs 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
- G02C7/061—Spectacle lenses with progressively varying focal power
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (AREA)
- Prostheses (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23275581A | 1981-02-09 | 1981-02-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE810553L IE810553L (en) | 1982-08-09 |
| IE50992B1 true IE50992B1 (en) | 1986-09-03 |
Family
ID=22874431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE553/81A IE50992B1 (en) | 1981-02-09 | 1981-03-13 | Progressive power ophthalmic lenses |
Country Status (12)
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59151128A (ja) * | 1983-02-17 | 1984-08-29 | Hoya Corp | 累進多焦点眼鏡レンズ |
| US4676610A (en) * | 1983-07-22 | 1987-06-30 | Sola International Holdings Ltd. | Method of making progressive lens surface and resulting article |
| US4861153A (en) * | 1986-12-19 | 1989-08-29 | American Optical Corporation | Progressive addition spectacle lens |
| US5123725A (en) * | 1986-12-19 | 1992-06-23 | American Optical Corporation | Progressive addition spectacle lens |
| US4838675A (en) * | 1987-06-19 | 1989-06-13 | Sola International Holdings, Ltd. | Method for improving progressive lens designs and resulting article |
| FR2617989B1 (fr) * | 1987-07-07 | 1989-10-27 | Essilor Int | Lentille ophtalmique multifocale |
| JP2756670B2 (ja) * | 1987-11-30 | 1998-05-25 | 旭光学工業株式会社 | 累進多焦点眼鏡レンズ |
| US5285222A (en) * | 1992-11-20 | 1994-02-08 | Gentex Optics, Inc. | Progressive lens series |
| FR2704327B1 (fr) * | 1993-04-23 | 1995-06-23 | Essilor Int | Paire de lentilles ophtalmiques multifocales progressives. |
| US5812237A (en) * | 1995-11-27 | 1998-09-22 | Roddy; Kenneth C. | Ophthalmic no-line progressive addition lenses |
| EP2372435B1 (en) * | 2002-05-31 | 2016-12-14 | Crossbows Optical Limited | Progressive addition power lens |
| JP4973027B2 (ja) | 2005-08-22 | 2012-07-11 | セイコーエプソン株式会社 | 累進屈折力レンズ |
| JP2011070234A (ja) * | 2005-08-22 | 2011-04-07 | Seiko Epson Corp | 累進屈折力レンズ |
| JP4559515B2 (ja) * | 2008-12-03 | 2010-10-06 | クロスボウズ オプティカル リミテッド | 累進屈折力レンズ |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA583087A (en) * | 1955-06-04 | 1959-09-15 | J. Davenport Lawrence | Variable power lens |
| BE755907A (fr) * | 1969-09-11 | 1971-02-15 | Lunetiers | Lentilles a puissance focale progressive |
| NL7107504A (enrdf_load_stackoverflow) * | 1971-06-01 | 1972-12-05 | ||
| US4056311A (en) * | 1973-08-16 | 1977-11-01 | American Optical Corporation | Progressive power ophthalmic lens having a plurality of viewing zones with non-discontinuous variations therebetween |
| DE2814916C3 (de) * | 1978-04-06 | 1982-01-07 | Optische Werke G. Rodenstock, 8000 München | Brillenglas mit einem zwischen Fernteil und Nahteil liegenden Progressionsbereich |
-
1981
- 1981-03-04 FR FR8104300A patent/FR2499725B1/fr not_active Expired
- 1981-03-04 GB GB8106861A patent/GB2092772B/en not_active Expired
- 1981-03-05 CA CA000372360A patent/CA1153228A/en not_active Expired
- 1981-03-06 SE SE8101437A patent/SE451772B/sv not_active IP Right Cessation
- 1981-03-06 CH CH154881A patent/CH641572A5/fr not_active IP Right Cessation
- 1981-03-13 IE IE553/81A patent/IE50992B1/en not_active IP Right Cessation
- 1981-03-18 NL NLAANVRAGE8101311,A patent/NL189879C/xx not_active IP Right Cessation
- 1981-03-19 AU AU68551/81A patent/AU532218B2/en not_active Ceased
- 1981-03-23 MX MX186497A patent/MX153400A/es unknown
- 1981-03-30 JP JP56045669A patent/JPS57139718A/ja active Granted
- 1981-03-30 IT IT8148143A patent/IT8148143A0/it unknown
- 1981-03-31 BR BR8101927A patent/BR8101927A/pt not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB2092772A (en) | 1982-08-18 |
| FR2499725B1 (fr) | 1985-07-05 |
| AU6855181A (en) | 1982-08-26 |
| SE8101437L (sv) | 1982-08-10 |
| BR8101927A (pt) | 1983-06-07 |
| MX153400A (es) | 1986-10-07 |
| FR2499725A1 (fr) | 1982-08-13 |
| JPH0147767B2 (enrdf_load_stackoverflow) | 1989-10-16 |
| CH641572A5 (fr) | 1984-02-29 |
| CA1153228A (en) | 1983-09-06 |
| NL8101311A (nl) | 1982-09-01 |
| AU532218B2 (en) | 1983-09-22 |
| NL189879C (nl) | 1993-08-16 |
| IE810553L (en) | 1982-08-09 |
| JPS57139718A (en) | 1982-08-28 |
| NL189879B (nl) | 1993-03-16 |
| SE451772B (sv) | 1987-10-26 |
| IT8148143A0 (it) | 1981-03-30 |
| GB2092772B (en) | 1985-06-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK9A | Patent expired |