BE525925A - - Google Patents
Info
- Publication number
- BE525925A BE525925A BE525925DA BE525925A BE 525925 A BE525925 A BE 525925A BE 525925D A BE525925D A BE 525925DA BE 525925 A BE525925 A BE 525925A
- Authority
- BE
- Belgium
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/00028—Bifocal lenses; Multifocal lenses
-
- 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
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (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 |
|---|---|---|---|
| US321034XA | 1953-01-23 | 1953-01-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE525925A true BE525925A (es) |
Family
ID=21863118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE525925D BE525925A (es) | 1953-01-23 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE525925A (es) |
| CH (1) | CH321034A (es) |
| FR (1) | FR1095674A (es) |
| GB (1) | GB739341A (es) |
| NL (2) | NL184568C (es) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3130029A (en) * | 1959-06-23 | 1964-04-21 | Bausch & Lomb | Method for making fused multifocal lenses |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3149948A (en) * | 1957-10-07 | 1964-09-22 | Pittsburgh Plate Glass Co | Method for forming multifocal lens blanks |
| NL247751A (es) * | 1959-01-26 | |||
| US3130028A (en) * | 1959-05-26 | 1964-04-21 | Pittsburgh Plate Glass Co | Glass feeding |
| GB990483A (en) * | 1962-07-04 | 1965-04-28 | Pilkington Brothers Ltd | Improvements in or relating to the pressure moulding of articles |
| DE102006020991B4 (de) * | 2006-05-04 | 2009-09-10 | Carl Zeiss Ag | Verfahren zum Herstellen eines Formkörpers aus Glas oder Glaskeramik |
-
0
- BE BE525925D patent/BE525925A/xx unknown
- NL NL85388D patent/NL85388C/xx active
- NL NLAANVRAGE7606556,A patent/NL184568C/xx active
-
1954
- 1954-01-21 CH CH321034D patent/CH321034A/de unknown
- 1954-01-21 GB GB1821/54A patent/GB739341A/en not_active Expired
- 1954-01-22 FR FR1095674D patent/FR1095674A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3130029A (en) * | 1959-06-23 | 1964-04-21 | Bausch & Lomb | Method for making fused multifocal lenses |
Also Published As
| Publication number | Publication date |
|---|---|
| NL85388C (es) | |
| NL184568C (nl) | |
| FR1095674A (fr) | 1955-06-06 |
| GB739341A (en) | 1955-10-26 |
| CH321034A (de) | 1957-04-30 |