Method and device for detecting defect of cover lens in laser welding system on automobile production line
US10794838B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2017 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | Feb 17, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/9583
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting a defect of a laser welding cover lens includes a coaxial light source configured to emit collimating detection light, wherein the direction of the detection light is perpendicular to a preset horizontal direction; a half transparent and half reflecting mirror arranged above the coaxial light source to reflect the detection light to a preset position; a reflecting mirror configured to reflect light from the half transparent and half reflecting mirror to the cover lens; an industrial camera parallel to the half transparent and half reflecting mirror and the reflecting mirror and configured to receive incident light from the detection light to obtain a detection image, wherein the incident light is reflected by the cover lens and passes through the reflecting mirror and the half transparent and half reflecting mirror; and a processor configured to determine whether there exists a bad point on the cover lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.