Lens inspection system
US6154274A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1998 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Jun 22, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/0278
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for inspecting ophthalmic lenses and including transport, illumination, imaging and image processing subsystems. The transport system moves a multitude of ophthalmic lenses along a predetermined path to move each of those lenses, one at a time, into a lens inspection position, and the illumination subsystem generates a series of light pulses and directs a respective one light pulse through each ophthalmic lens. The imaging subsystem generates a set of signals representing selected portions of the light pulses transmitted through the ophthalmic lenses, and the image processing subsystem receives those signals from the imaging subsystem and processes those signals according to a predetermined program to identify at least one condition of each of the lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.