Process for determining a dimension of an object
US4227813A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 1978 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | Mar 7, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To determine a dimension of an object, two emitted beams whose axes define a known angle are directed by means of a deflector onto points of the object related to the dimension to be determined so that when one beam falls on the first of two points defining the dimension the other beam falls on the second point. Light rays reflected by the two points are received as two beams by means of a receiver. The angle of incidence of the emitted beam is measured with respect to a direction. The angles made respectively by the axes of the two received beams with the axes of the emitted beams are measured. The dimension is calculated from the angles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.