High speed laser triangulation measurements of shape and thickness
US6466305B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 2000 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | May 23, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/2545
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This application is concerned with laser triangulation sensors for object dimension and position determination, and in particular, more effective measurement of object shapes and/or thickness using laser triangulation sensors having multiple projected laser beams and at least two linear or matrix array cameras to view the images of light reflected from the object due to the beams impinging on the object surface. Besides disclosure of the basic operation of “multi-point” sensors of this type, novel methods and apparatus are also disclosed to assure function of the device even with objects, such as lumber, having pronounced protrusions and depressions in their surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.