Method and measuring device for contactless measurement of angles or angle changes on objects
US7298468B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 20, 2005 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Jan 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/0221
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method for the contactless measurement of angles or angle modifications, distances or lateral displacements in objects. According to said method, an aperture is transilluminated by means of a ray bundle and after being reflected by a distant reflective element, which generates or is subjected to the angles, angle modifications or lateral displacements that are to be measured, is projected onto a detector surface by an optical system. The image of the aperture on the detector surface is captured, the position of the aperture image is determined in relation to a reference point on the detector surface and the measured value of the angle modification or lateral displacement is calculated using the distance of the centre of the image from the reference point. The invention also relates to an angle or height measuring device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.