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:
Sep. 15, 2026
Filed:
Dec. 07, 2022
Dyson Technology Limited, Malmesbury, GB;
David James Graham, Swindon, GB;
Michele Benetti, Bristol, GB;
Sanjeeb Tripathy, Cambridge, GB;
Christopher John Bateman, Swindon, GB;
Alexander Michael Kember, Woking, GB;
Dyson Technology Limited, Malmesbury, GB;
Abstract
A self-mixing interferometer configured to monitor particulate material within a monitored region of space comprising a laser cavity assembly (A) and an optical assembly (B) configured to bathe the monitored region with laser light of the interferometer possessing wavefronts having different directions at different respective locations within the monitored region. A laser monitoring unit (C) is configured to acquire an interferometric signal generated by the interferometer in response to light returned to the laser cavity assembly from said wavefronts by said particulate material. A processing module (D) is configured to determine a property of the particulate material within the monitored region according to changes in the frequency of a waveform within at least a part of the interferometric signal.