Single block mounting system for surfacing and edging of a lens blank and method therefor
US5341604A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1992 |
| Grant date | Aug 30, 1994 |
| Priority date | — |
| Expiry date | Dec 30, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B13/005
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and related system and article provides a lens blank and block assembly capable of being mounted in any of a surface generating machine, a finishing apparatus and an edging machine without requiring re-blocking of the lens in order to compensate for axis shifts. The method and associated system utilizes a controller which takes data inputted to it in the form of prescription information and a frame opening shape and converts it into two sets of machine operating data together used by a computer to allow the surface to be generated on the blank so as to be readily shaped edgewise according to a selected frame pattern by simply the mounting blank and block assembly in the edging machine thereafter. The blank is separated from the block assembly and readily inserted into a selected glass frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.