Method for evaluating suitability of lighting conditions for detecting an analyte in a sample using a camera of a mobile device

US12360104B2 · kind B2 · utility

Assignee

• Roche Diabetes Care, Inc. · US

Inventors

• Max Berg · Mannheim, DE
• Fredrik Hailer · Kohlhof, DE
• Timo Klein · Altdorf, DE
• Bernhard Limburg · Sörgenloch, DE
• Christian Melchinger · Mannheim, DE
• Volker Tuerck · Berlin, DE

Key dates

• Filing date: Oct 19, 2023
• Grant date: Jul 15, 2025
• Expiry date: Oct 19, 2043

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2021/7759
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method of evaluating suitability of lighting conditions for detecting an analyte in a sample using a mobile device camera. A test strip is provided for detecting the analyte. A first image of the test strip is captured while an illumination source of the mobile device is turned off and a second image of the test strip is captured while the illumination source is turned on. A sample is applied to the test strip and the first and second images are compared to thereby determine the difference in lighting conditions between the first image and the second image. The comparison is used to derive information on suitability of the lighting conditions for analyte detection. The lighting conditions are indicated as suitable when a predetermined threshold amount of light intensity used for illumination of the test strip originates from the illumination source.