Optical evaluation of lenses and lens molds
US9599534B2 · kind B2 · utility
0Cited by
3References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2015 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Aug 13, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D11/0048
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining information about an object including a curved portion and a planar portion, the curved portion having a first curved surface having an apex and defining an axis of the object, includes: directing measurement light to the object; detecting measurement light reflected from the first curved surface of the curved portion; detecting measurement light reflected from at least one other surface of the object; and determining, based on the detected light, information about the apex of the first curved surface of the curved portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.