CA2145098A1 - Method and apparatus for masking removable optical lens markings during lens grinding - Google Patents
Method and apparatus for masking removable optical lens markings during lens grindingInfo
- Publication number
- CA2145098A1 CA2145098A1 CA002145098A CA2145098A CA2145098A1 CA 2145098 A1 CA2145098 A1 CA 2145098A1 CA 002145098 A CA002145098 A CA 002145098A CA 2145098 A CA2145098 A CA 2145098A CA 2145098 A1 CA2145098 A1 CA 2145098A1
- Authority
- CA
- Canada
- Prior art keywords
- mask
- lens
- markings
- masking
- optical lens
- 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.)
- Granted
Links
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
A method and apparatus for protecting removable markings (12) on an optical lens (10) during grinding thereof to a desired prescription. A mask (18) is placed over the markings prior to application of an adhesive tape (20), to which a low temperature alloy block (24) is bonded for holding of the lens during grinding. The mask preferably covers only the markings, and is transparent to allow alignment thereof. Preferably the mask is held in place on the lens surface without the use of an adhesive, although a low tack adhesive may be used which does not remove the markings when the mask is peeled away from the lens. A
preferred material for the mask is a static cling vinyl.
preferred material for the mask is a static cling vinyl.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/947,706 US5343657A (en) | 1992-09-18 | 1992-09-18 | Method and apparatus for masking removable optical lens markings during lens grinding |
US07/947,706 | 1992-09-18 | ||
PCT/US1993/008738 WO1994006598A1 (en) | 1992-09-18 | 1993-09-14 | Method and apparatus for masking removable optical lens markings during lens grinding |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2145098A1 true CA2145098A1 (en) | 1994-03-31 |
CA2145098C CA2145098C (en) | 2005-12-06 |
Family
ID=35519626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002145098A Expired - Lifetime CA2145098C (en) | 1992-09-18 | 1993-09-14 | Method and apparatus for masking removable optical lens markings during lens grinding |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2145098C (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9545765B2 (en) * | 2011-12-15 | 2017-01-17 | Essilor International (Compagnie Generale D'optique) | Method of blocking an optical lens |
-
1993
- 1993-09-14 CA CA002145098A patent/CA2145098C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2145098C (en) | 2005-12-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request |