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US Patent 10451537 Diffusing wave spectroscopy with heterodyne detection

Patent 10451537 was granted and assigned to Canon U.S.A. on October, 2019 by the United States Patent and Trademark Office.

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Patent
Patent

Patent attributes

Patent Applicant
Canon U.S.A.
Canon U.S.A.
Current Assignee
Canon U.S.A.
Canon U.S.A.
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
10451537
Date of Patent
October 22, 2019
Patent Application Number
15424581
Date Filed
February 3, 2017
Patent Citations Received
‌
US Patent 11766216 Optical sensing module
Patent Primary Examiner
‌
Violeta A Prieto
Patent abstract

Exemplary apparatus and methods are provided for analyzing a medium. The apparatus, which may be a diffusing wave spectroscopy apparatus, comprises a first beam splitter for splitting a light from the laser light source into an excitation light and a reference light. The excitation light is directed on to a first portion of the medium and then multiply scattered light is collected at a second portion of the medium, the second portion being different from the first portion. The reference light, which has been attenuated, is combined with the multiply scattered light and either a power spectrum or an autocorrelation function is calculated.

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