Method, apparatus, and computer program product for focus prediction

US8914255B2 · kind B2 · utility

Assignee

• CellaVision AB · SE

Inventors

• Sven Hedlund · Genarp, SE
• Benny Klein · Bara, SE

Key dates

• Filing date: Apr 29, 2011
• Grant date: Dec 16, 2014
• Expiry date: May 8, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B21/365
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The present invention relates to a method, an analyzer and a computer program product for focus prediction in a sample arranged on a measuring surface of an analyzer. The method comprises row wise scanning sample positions by means of an optical system of said analyzer, said sample positions being positions in a coordinate system for said measuring surface containing said sample, for the first sample position on each row, determining a focus and storing said focus, and for each subsequent sample position: if a stored difference exists, predicting a focus by adding said stored difference to said stored focus, or if no stored difference exists, determining a focus and storing said focus.