# US 2026/0063533 A1 · Optical measuring device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0063533 A1 - Document ID: US20260063533A1 - Status: Published application - Kind: A1 - Application number: 19/385,995 - Filed: 2025-11-11 - Published: 2026-03-05 - Earliest claimed: 2024-02-21 - Assignees: The Wave Talk, Inc. - Applicants: The Wave Talk, Inc. - Inventors: Young Dug KIM - Web page: https://patentgrep.com/patent/US20260063533A1 ## CPC - G01N 15/0211: {Investigating a scatter or diffraction pattern} - G01N 15/1434: Optical arrangements - G01N 15/0205: by optical means - G01N 15/06: Investigating concentration of particle suspensions (by weighing G01N5/00; investigating sedimentation of particle suspensions G01N15/04; investigating individual particles G01N15/10) - G01N 15/075: by optical means - G01N 21/21: Polarisation-affecting properties (G01N21/19 takes precedence) - G01N 21/45: using interferometric methods; using Schlieren methods - G01N 21/47: Scattering, i.e. diffuse reflection (G01N21/25, G01N21/41 take precedence {G01N21/55 takes precedence}) - G01N 21/64: Fluorescence; Phosphorescence - G01N 2015/0053: {in liquids, e.g. trouble} - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract The present disclosure relates to an optical measuring apparatus. An embodiment of the present disclosure provides an optical measuring apparatus including a chamber portion including a first chamber accommodating a sample, and a second chamber providing a space in which light interference with scattered light emitted from the first chamber occurs, a light source portion irradiating input light toward the chamber portion, a sensor portion detecting speckles of output light that is output from the chamber portion, and a controller configured to estimate information about target particles in the sample by using the speckles of the detected output light. ## Claims ### Claim 1 An optical measuring apparatus comprising: a chamber portion including a first chamber accommodating a sample, and a second chamber providing a space in which light interference with scattered light emitted from the first chamber occurs; a light source portion irradiating input light toward the chamber portion; a sensor portion detecting speckles of output light that is output from the chamber portion; and a controller configured to estimate information about target particles in the sample by using the speckles of the detected output light. ### Claim 2 (depends on 1) The optical measuring apparatus of claim 1, wherein the chamber portion further includes a barrier wall portion partitioning inside of the first chamber and inside of the second chamber from each other, and transmitting the scattered light. ### Claim 3 (depends on 1) The optical measuring apparatus of claim 1, wherein the input light irradiated from the light source portion includes first input light irradiated into the first chamber and second input light irradiated into the second chamber, the first input light and the target particles colliding with each other in the first chamber to generate the scattered light, and the sensor portion detects the speckles of the output light that is generated through light interference between the scattered light and the second input light in the second chamber. ### Claim 4 (depends on 3) The optical measuring apparatus of claim 3, further comprising a light distributor that is arranged between the chamber portion and the light source portion and branches the input light irradiated from the light source portion into the first input light and the second input light, wherein the first input light and the second input light branched by the light distributor have wavelengths within a same range. ### Claim 5 (depends on 3) The optical measuring apparatus of claim 3, further comprising an angle adjuster that is arranged between the chamber portion and the light source portion, and is capable of adjusting an incident angle of the first input light or an incident angle of the second input light with respect to the chamber portion. ### Claim 6 (depends on 3) The optical measuring apparatus of claim 3, wherein the sensor portion comprises: a first sensor that is arranged adjacent to the first chamber and detects the scattered light; and a second sensor that is arranged closer to the second chamber than the first sensor and measures the output light, and a light intensity of the output light acquired by the second sensor is relatively greater than a light intensity of the scattered light acquired by the first sensor. ### Claim 7 (depends on 3) The optical measuring apparatus of claim 3, further comprising a polarizer that is arranged on an optical path of the second input light and has a polarization axis set in advance. ### Claim 8 An optical measuring apparatus comprising: a light source portion generating input light; a chamber portion providing a space in which the input light input from the light source portion is multi-reflected or multi-scattered through multiple passages; a sensor portion detecting speckles of scattered light output from the chamber portion; a first polarization unit that is arranged between the chamber portion and the light source portion and arranged on an optical path of the input light; and a second polarization unit that is arranged between the chamber portion and the sensor portion, arranged on an optical path of the scattered light, and has a polarization axis crossing a polarization axis of the first polarization unit. ### Claim 9 (depends on 8) The optical measuring apparatus of claim 8, wherein the polarization axis of the first polarization unit and the polarization axis of the second polarization unit are perpendicular to each other. ### Claim 10 (depends on 8) The optical measuring apparatus of claim 8, further comprising a driver capable of adjusting the polarization axis of the second polarization unit.