Camera for visual inspection
US4664520A · kind A · utility
4Cited by
0References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1985 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Sep 17, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/9515
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A camera for visual inspection of defect on an object having a complicated shape is disclosed. This camera is provided with a reflecting mirror having two symmetrical reflecting surfaces to split incident light into two portions and direct them onto two linear image sensing devices mounted on inner surface of the camera body at separate positions. The received lights are converted into electric signals and after processing to obtain a difference signal, a signal indicating presence of a defect is obtained remarkably.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.