The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 03, 2026
Filed:
May. 16, 2022
University of Pittsburgh—of the Commonwealth System of Higher Education, Pittsburgh, PA (US);
Hongqiang MA, Pittsburgh, PA (US);
Yang Liu, Sewickley, PA (US);
University of Pittsburgh—Of the Commonwealth System of Higher Education, Pittsburgh, PA (US);
Abstract
A method of compensating for focus drift in a microscopy system includes receiving data representing a reference light signal reflected from a sample and received by an image sensor, identifying from the data a peak of the reference light signal, the peak having a maximum intensity value for the reference light signal, extracting a sub-region having a center from the data, the center being located at the peak, calculating a first harmonic of a Fourier transform of the extracted sub-region, estimating a peak position of the reference light signal based on a phase of the first harmonic, and moving the lens system of the microscopy system or the sample in the axial direction using the translation stage based on the estimated position. Also, a system compensating for focus drift in a microscopy system according to the above method.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile