Lens and method for producing the same
US5227917A · kind A · utility
11Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | May 22, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/808
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A lens is manufactured by preparing a glass material, preparing a molding apparatus for pressmolding the glass material into a lens shape, preheating the glass material or heating the glass material in the molding apparatus to soften the glass material and molding the glass material into the lens shape by the molding apparatus. An engagement portion of the molded lens to a member on which the lens is to be mounted is molded in the molding process simultaneously with the molding of an optically function portion of the lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.