System for checking centration of lens surfaces of aspheric lens
US7656513B2 · kind B2 · utility
4Cited by
12References
6Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Dec 14, 2007 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Jan 27, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/0221
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for checking centration of lens surfaces of an aspheric lens includes a light-emitting device, a lens holder and an image processing device. The light-emitting device emits a light. The lens holder positions the aspheric lens in a light path of the light emitted from the light-emitting device. The image processing device receives the light which is emitted from the light-emitting device and has passed through the aspheric lens, and produces an image and shows the image. A quality of the image shown by the image processing device determines a tilt degree of the aspheric lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.