Method and apparatus for determining the position of a feature of an object
US4744664A · kind A · utility
15Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1986 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Jun 3, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/89
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for locating a feature of an object disposed in a frame includes a spot projector for projecting a spot in the general vicinity of the feature and an imaging device with a limited field of view. The spot projector is a precision device which projects the spot towards a preselected location on the frame. When the spot and the feature are in the field of view of the imaging device, the absolute location of the feature is determined from its selective distance to the spot. Provisions are also made for determining depth or relief information about the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.