Optical correction of a laser beam
US7440090B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2006 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Nov 3, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C9/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A laser beam transmitter and a method of calibrating such a transmitter result in a beam of laser light that is projected in a desired direction with respect to a transmitter body. The transmitter and a beam target are positioned such that a properly calibrated beam will illuminate a desired point on the target, such as for example the target center. The transmitter is activated and the offset of the point illuminated on the target from the target center measured. A plurality of optical wedge correction elements having varying wedge angles is provided, and the appropriate one of these optical wedge correction elements that will correct for the measured offset is selected. The selected optical wedge correction element is positioned in the transmitter body in the path of the beam. The optical wedge correction element is rotated until the beam is substantially aligned to illuminate the target center. The optical wedge element is then affixed in place in the transmitter body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.