Method for detecting parfocality of zoom-stereo microscope
US9019487B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2013 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Sep 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/241
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for detecting a parfocality of a zoom-stereo microscope includes: acquiring four highest definitions corresponding to a plurality of images with a cooperation of four definition judging functions, acquiring a relatively clearest position according to the four highest definitions, comparing a definition in the relatively clearest position with a definition in a parfocal position to judge whether the relatively clearest position is the parfocal position, then adjusting a magnification of the zoom-stereo microscope to acquire the parfocal positions at a finite number of the discrete magnifications, and finally fitting a parfocal curve at the continuous magnifications. The method according to the present invention implements a parfocality detection of the stereo microscope automatically and effectively and increases a productivity, and has a high detecting precision. In addition, the method according to the present invention has a good robustness, so that users needn't intervene and adjust frequently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.