GB837727A - Method and apparatus for forming lens blanks - Google Patents
Method and apparatus for forming lens blanksInfo
- Publication number
- GB837727A GB837727A GB28120/58A GB2812058A GB837727A GB 837727 A GB837727 A GB 837727A GB 28120/58 A GB28120/58 A GB 28120/58A GB 2812058 A GB2812058 A GB 2812058A GB 837727 A GB837727 A GB 837727A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mass
- minor segment
- blank
- molten glass
- segment
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US837727XA | 1957-10-07 | 1957-10-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB837727A true GB837727A (en) | 1960-06-15 |
Family
ID=22180599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB28120/58A Expired GB837727A (en) | 1957-10-07 | 1958-09-02 | Method and apparatus for forming lens blanks |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE571668A (sv) |
GB (1) | GB837727A (sv) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3178274A (en) * | 1958-05-13 | 1965-04-13 | Pittsburgh Plate Glass Co | Ophthalmic glass |
-
0
- BE BE571668D patent/BE571668A/xx unknown
-
1958
- 1958-09-02 GB GB28120/58A patent/GB837727A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3178274A (en) * | 1958-05-13 | 1965-04-13 | Pittsburgh Plate Glass Co | Ophthalmic glass |
Also Published As
Publication number | Publication date |
---|---|
BE571668A (sv) |
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