Laser beam calibration and beam quality measurement in laser surgery systems
US10667949B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2016 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | May 3, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2009/00855
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A laser eye surgery system includes a computer which scans a focused laser beam in a trajectory over a reticle or target and determines beam quality via laser light reflected from the target. The target may have a grid pattern of lines, with the diameter of the focused laser beam determined based on a time interval for the scanned beam to move onto a line of the grid pattern. Methods for measuring beam quality in a laser eye surgery system provide a direct, quantitative quality measurement of the focused laser beam, and may be performed quickly and automatically. Using scanning mirror position information together with signals resulting from laser light reflected from the target, the laser eye surgery system may also be calibrated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.