Methods and apparatus providing calibration of background illumination for sample and/or sample container characterization

US12253533B2 · kind B2 · utility

Assignee

• Siemens Healthcare Diagnostics Inc. · US

Inventors

• Yao-Jen Chang
• Patrick Wissmann · Munich, DE
• Ludwig Listl · Munich, DE
• Benjamin S. Pollack · Budd Lake, US
• Ramkrishna Jangale · Pune, IN
• Rayal Raj Prasad Nalam Venkat · Princeton, US
• Venkatesh NarasimhaMurthy
• Ankur Kapoor · Plainsboro, US

Key dates

• Filing date: Oct 22, 2020
• Grant date: Mar 18, 2025
• Expiry date: Oct 22, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G06V10/56
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A calibration method is provided including identifying the imaging area on each light panel with respect to each imaging device. A center position of the imaging area of each light panel for each imaging device is determined. An optimal optical center of the imaging apparatus using the center position of the imaging area of each imaging device is determined. A tube calibration tool is installed in a carrier on a track, and the carrier is moved on the track so that a center of the tube calibration tool is located at a closest location to the optimal optical center of the imaging apparatus. The center of the tube calibration tool is used to determine a center of a region of interest (ROI) for backlight calibration. Methods for health checking the calibration and apparatus used to carry out the calibration are provided as well as other aspects.