Optical component molding apparatus for following the differential shrinkage of molded synthetic material
US4573903A · kind A · utility
12Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1983 |
| Grant date | Mar 4, 1986 |
| Priority date | — |
| Expiry date | Jul 15, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/808
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A device suitable for molding ophthalmic lenses comprises two spaced mold parts in face-to-face relationship inside a cylindrical sleeve. One or both parts comprise a rigid supporting base, a molding die of an elastically deformable material and an intermediate pad of an incompressible elastic material disposed between the base and the die and completely covering their respective surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.