GB1396059A - Method of producing photochromic multifocal spectacle lenses - Google Patents
Method of producing photochromic multifocal spectacle lensesInfo
- Publication number
- GB1396059A GB1396059A GB1817473A GB1817473A GB1396059A GB 1396059 A GB1396059 A GB 1396059A GB 1817473 A GB1817473 A GB 1817473A GB 1817473 A GB1817473 A GB 1817473A GB 1396059 A GB1396059 A GB 1396059A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- segment
- photochromic
- reading
- fusing
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/20—Uniting glass pieces by fusing without substantial reshaping
- C03B23/22—Uniting glass lenses, e.g. forming bifocal lenses
-
- 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
-
- 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
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Ophthalmology & Optometry (AREA)
- Optics & Photonics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Eyeglasses (AREA)
- Glass Compositions (AREA)
- Joining Of Glass To Other Materials (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
1396059 Multifocal glass lenses CARL ZEISS-STIFTUNG [trading as CARL ZEISS] 16 April 1973 [2 May 1972] 18174/73 Heading C1M [Also in Division G2] In the manufacture of a fused multifocal lens of photochromic glass, a reading glass segment 2, Fig. 9 or Fig. 3 and photochromic glass major lens 4 or 7 are brought into position for fusing, heated together to a heat treatment temperature range in which separation areas determining the photochromic properties of the glass are formed, 550 C. to 650 C., thereby fusing the parts together and subsequently cooling the parts rapidly so that the retention time in the heat treatment range is less than about 10 hours, the time sufficient to produce a turbidity in the glass. The reading segment may be of non-photochromic glass and both glasses may be of previous non-heat-treated photochromic glass and the photochromic areas of the glass are fully established by a further heating and cooling cycle. The reading segment 2 with polished surface 3 may be positioned on a support 1 in a metal ring 6 and the lower melting point glass 4 pressed downwardly after the heating step by a ram 2. Alternatively, the glass 7 may be provided with a polished recess 8 and the segment 9 of lower melting point glass positioned thereover by a metal alloy ring 10 which melts at about the temperature of softening of the segment 9 to flow off the convex surface of the glass 7 as the segment 9 sinks into the recess 8.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2221488A DE2221488B2 (en) | 1972-05-02 | 1972-05-02 | Process for the production of photochromic multifocal lenses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1396059A true GB1396059A (en) | 1975-05-29 |
Family
ID=5843868
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4293674A Expired GB1399856A (en) | 1972-05-02 | 1973-04-16 | Method of producing photochromic multifocal spectacle lenses |
| GB1817473A Expired GB1396059A (en) | 1972-05-02 | 1973-04-16 | Method of producing photochromic multifocal spectacle lenses |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4293674A Expired GB1399856A (en) | 1972-05-02 | 1973-04-16 | Method of producing photochromic multifocal spectacle lenses |
Country Status (13)
| Country | Link |
|---|---|
| JP (4) | JPS5312925B2 (en) |
| AT (1) | AT322764B (en) |
| BE (1) | BE798940A (en) |
| CA (1) | CA1011111A (en) |
| CH (2) | CH547504A (en) |
| DE (1) | DE2221488B2 (en) |
| DK (1) | DK144968C (en) |
| ES (1) | ES414198A1 (en) |
| FR (1) | FR2183138B1 (en) |
| GB (2) | GB1399856A (en) |
| IT (1) | IT983040B (en) |
| NL (1) | NL153834B (en) |
| SE (2) | SE394995B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2221488B2 (en) * | 1972-05-02 | 1975-06-19 | Fa. Carl Zeiss, 7920 Heidenheim | Process for the production of photochromic multifocal lenses |
| DE2609469C2 (en) * | 1976-03-08 | 1983-05-11 | Corning Glass Works, 14830 Corning, N.Y. | Process for the production of photochromic, ophthalmic multifocall lenses |
| JPS52114341A (en) * | 1976-03-22 | 1977-09-26 | Corning Glass Works | Method of manufacturing photochromic multiifocus spectacle lens |
| FR2346296A1 (en) * | 1976-03-31 | 1977-10-28 | Corning Glass Works | Multifocal glass lens mfr. - using photochromic glass fused to another glass and heat treated |
| JPS58158318U (en) * | 1982-04-17 | 1983-10-22 | 株式会社トーキン | Laminated displacement element |
| JPS5937993U (en) * | 1982-08-30 | 1984-03-10 | 日立冷熱株式会社 | Heat exchange plate for cooling tower |
| JPS60177316A (en) * | 1984-02-24 | 1985-09-11 | Ngk Spark Plug Co Ltd | Optical deflecting device |
| JPS61134726A (en) * | 1984-12-06 | 1986-06-21 | Ngk Spark Plug Co Ltd | Optical deflector |
| JPS61132919A (en) * | 1984-12-01 | 1986-06-20 | Ngk Spark Plug Co Ltd | Optical deflecting device |
| JP2006327844A (en) * | 2005-05-23 | 2006-12-07 | Olympus Corp | Manufacturing method of optical element and its manufacturing apparatus |
| JP2008285377A (en) * | 2007-05-18 | 2008-11-27 | Panasonic Corp | Joined optical element |
| JP2017048095A (en) * | 2015-09-04 | 2017-03-09 | 旭硝子株式会社 | Production method of glass |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR584639A (en) * | 1924-08-14 | 1925-02-10 | Optique Telegic Soc D | Improvements in the manufacture of multiple focus lenses used in eyewear |
| DE514983C (en) * | 1927-10-25 | 1930-12-20 | Emil Busch Akt Ges Optische In | Process for the production of a multi-thickness glass |
| US2026606A (en) * | 1933-03-31 | 1936-01-07 | Bausch & Lomb | Means for making ophthalmic lenses |
| US3328182A (en) * | 1963-06-24 | 1967-06-27 | Corning Glass Works | Phototropic glass article and method |
| DE2221488B2 (en) * | 1972-05-02 | 1975-06-19 | Fa. Carl Zeiss, 7920 Heidenheim | Process for the production of photochromic multifocal lenses |
| JPS5853274B2 (en) * | 1976-07-21 | 1983-11-28 | 石川島播磨重工業株式会社 | rotary kiln |
| JPS5313207A (en) * | 1976-07-23 | 1978-02-06 | Hitachi Ltd | Pumping apparatus |
-
1972
- 1972-05-02 DE DE2221488A patent/DE2221488B2/en not_active Ceased
-
1973
- 1973-04-02 AT AT287273A patent/AT322764B/en not_active IP Right Cessation
- 1973-04-16 GB GB4293674A patent/GB1399856A/en not_active Expired
- 1973-04-16 GB GB1817473A patent/GB1396059A/en not_active Expired
- 1973-04-18 CH CH553073A patent/CH547504A/en not_active IP Right Cessation
- 1973-04-18 CH CH552973A patent/CH548615A/en not_active IP Right Cessation
- 1973-04-27 SE SE7305978A patent/SE394995B/en unknown
- 1973-04-28 ES ES414198A patent/ES414198A1/en not_active Expired
- 1973-04-30 IT IT49730/73A patent/IT983040B/en active
- 1973-04-30 BE BE130607A patent/BE798940A/en unknown
- 1973-05-01 CA CA170,140A patent/CA1011111A/en not_active Expired
- 1973-05-01 DK DK236473A patent/DK144968C/en active
- 1973-05-01 JP JP4901073A patent/JPS5312925B2/ja not_active Expired
- 1973-05-02 NL NL737306111A patent/NL153834B/en not_active IP Right Cessation
- 1973-05-02 FR FR7315676A patent/FR2183138B1/fr not_active Expired
- 1973-08-01 JP JP8671773A patent/JPS5313207B2/ja not_active Expired
-
1975
- 1975-11-03 SE SE7512290A patent/SE414025B/en unknown
-
1977
- 1977-09-09 JP JP10869877A patent/JPS5340544A/en active Granted
- 1977-09-09 JP JP10869777A patent/JPS5340543A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DK144968B (en) | 1982-07-19 |
| JPS4962152A (en) | 1974-06-17 |
| JPS5313207B2 (en) | 1978-05-09 |
| AT322764B (en) | 1975-06-10 |
| FR2183138B1 (en) | 1976-06-11 |
| SE7512290L (en) | 1975-11-03 |
| GB1399856A (en) | 1975-07-02 |
| NL7306111A (en) | 1973-11-06 |
| JPS5340543A (en) | 1978-04-13 |
| SE394995B (en) | 1977-07-25 |
| CA1011111A (en) | 1977-05-31 |
| FR2183138A1 (en) | 1973-12-14 |
| BE798940A (en) | 1973-08-16 |
| IT983040B (en) | 1974-10-31 |
| DE2221488A1 (en) | 1973-11-22 |
| JPS5724893B2 (en) | 1982-05-26 |
| DE2221488B2 (en) | 1975-06-19 |
| SE414025B (en) | 1980-07-07 |
| JPS50105706A (en) | 1975-08-20 |
| CH547504A (en) | 1974-03-29 |
| JPS5312925B2 (en) | 1978-05-06 |
| DK144968C (en) | 1982-12-06 |
| CH548615A (en) | 1974-04-30 |
| JPS5340544A (en) | 1978-04-13 |
| ES414198A1 (en) | 1976-03-01 |
| NL153834B (en) | 1977-07-15 |
| JPS5724894B2 (en) | 1982-05-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |