Measurement system having a camera with a lens and a separate sensor
US6671397B1 · kind B1 · utility
23Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1999 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Dec 23, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/95684
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measurement system (1) has a camera with a lens (12) and a separate sensor (10) mounted so that their planes (13,11) intersect at an object plane (3) according to the Scheimpflug principle. A reference camera(4) is normal and provides a 2D normal image which is used by an image processor (25) to determine a calibration image. This allows the image processor to determine height of the object (2). A single image capture provides an image of the full object, such as a ball grid array (BGA).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.