IN161569B - - Google Patents
Info
- Publication number
- IN161569B IN161569B IN948/DEL/84A IN948DE1984A IN161569B IN 161569 B IN161569 B IN 161569B IN 948DE1984 A IN948DE1984 A IN 948DE1984A IN 161569 B IN161569 B IN 161569B
- Authority
- IN
- India
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
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/587,678 US4573777A (en) | 1984-03-08 | 1984-03-08 | Aspheric spectacle lens blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN161569B true IN161569B (el) | 1987-12-26 |
Family
ID=24350759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN948/DEL/84A IN161569B (el) | 1984-03-08 | 1984-12-19 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4573777A (el) |
| JP (1) | JPS60195516A (el) |
| GB (1) | GB2155653B (el) |
| IN (1) | IN161569B (el) |
| IT (1) | IT1179841B (el) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002122823A (ja) * | 2000-10-17 | 2002-04-26 | Asahi Optical Co Ltd | 非球面眼鏡レンズ、およびその加工方法 |
| CN103885199A (zh) * | 2014-04-08 | 2014-06-25 | 夏恒泉 | 一种学生防治近视镜片 |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB502764A (en) * | 1938-03-04 | 1939-03-24 | Alexander Herman | Improvements in or relating to high speed watercraft driven by propellers |
| GB520764A (en) * | 1938-10-31 | 1940-05-02 | American Optical Corp | Improvements in multifocal or bifocal lenses |
| GB602877A (en) * | 1940-11-28 | 1948-06-04 | Georges Lissac | Improvements in or relating to bi-focal glasses for spectacles or eyeglasses |
| FR972730A (fr) * | 1941-04-04 | 1951-02-02 | Lentilles à foyers multiples et à axes communs et leur procédé de fabrication | |
| GB580242A (en) * | 1941-04-04 | 1946-09-02 | Clave Serge | Improvements in or relating to multiple focus spectacle and like lenses |
| US2518099A (en) * | 1945-04-07 | 1950-08-08 | American Optical Corp | Lenticular cataract lens |
| US2796000A (en) * | 1952-11-08 | 1957-06-18 | Univis Lens Co | Method of making ophthalmic lens |
| US2923201A (en) * | 1952-11-08 | 1960-02-02 | Univis Lens Co | Ophthalmic lens |
| US3169247A (en) * | 1959-12-09 | 1965-02-09 | American Optical Corp | Ophthalmic aspheric lens series |
| FR1299573A (fr) * | 1961-05-30 | 1962-07-27 | Perfectionnements aux lentilles multifocales | |
| GB1165549A (en) * | 1966-01-12 | 1969-10-01 | Univis Inc | Improvements in Multifocal Lens Blank Manufacture. |
| GB1237931A (el) * | 1967-09-05 | 1971-07-07 | ||
| US3781097A (en) * | 1972-05-15 | 1973-12-25 | Itek Corp | Aspheric lens surface |
| US3950082A (en) * | 1973-01-10 | 1976-04-13 | David Volk | Ophthalmic lens for presbyopia and aphakia |
| US3801336A (en) * | 1973-02-20 | 1974-04-02 | American Optical Corp | Lead borosilicate optical glass adaptable to fusion with photochromic glass to produce multifocal lens |
| US4073578A (en) * | 1975-04-21 | 1978-02-14 | Phillip M. Frieder | Spectacle lens for aphakia patients |
| US4185897A (en) * | 1977-09-09 | 1980-01-29 | Frieder Philip M | Prosthetic aspheric spectacle lens for aphakia |
| US4181409A (en) * | 1978-10-16 | 1980-01-01 | American Optical Corporation | Aspheric lens series |
-
1984
- 1984-03-08 US US06/587,678 patent/US4573777A/en not_active Expired - Fee Related
- 1984-10-31 GB GB08427568A patent/GB2155653B/en not_active Expired
- 1984-11-09 JP JP59235333A patent/JPS60195516A/ja active Pending
- 1984-11-30 IT IT68192/84A patent/IT1179841B/it active
- 1984-12-19 IN IN948/DEL/84A patent/IN161569B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US4573777A (en) | 1986-03-04 |
| GB2155653A (en) | 1985-09-25 |
| IT8468192A1 (it) | 1986-05-30 |
| IT1179841B (it) | 1987-09-16 |
| IT8468192A0 (it) | 1984-11-30 |
| GB2155653B (en) | 1987-05-28 |
| JPS60195516A (ja) | 1985-10-04 |
| GB8427568D0 (en) | 1984-12-05 |