# US 10,307,063 B2 · Optical measuring device and electronic device including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,307,063 B2 - Document ID: US10307063B2 - Status: Granted - Kind: B2 - Application number: 15/237,812 - Filed: 2016-08-16 - Published: 2017-05-25 - Granted: 2019-06-04 - Earliest claimed: 2015-11-20 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Seung Jun Lee; Dong Ho Kim; Jung Mok Bae; Eui Seok Shin; Woo Chang Lee - Web page: https://patentgrep.com/patent/US10307063B2 ## CPC - A61B 5/0059: {using light, e.g. diagnosis by transillumination, diascopy, fluorescence (photoacoustic A61B5/0093; optical measurement of heart rate A61B5/02416; optical measurement of blood flow A61B5/0261; optical measurement of analytes A61B5/1455)} - A61B 5/14532: {for measuring glucose, e.g. by tissue impedance measurement} - A61B 5/1455: using optical sensors, e.g. spectral photometrical oximeters - A61B 5/443: {Evaluating skin constituents, e.g. elastin, melanin, water} - A61B 5/6803: {Head-worn items, e.g. helmets, masks, headphones or goggles} - A61B 5/681: {Wristwatch-type devices} - A61B 5/7278: {Artificial waveform generation or derivation, e.g. synthesizing signals from measured signals} - A61B 5/74: {Details of notification to user or communication with user or patient; User input means} - G01N 33/49: Blood {(chemical methods for determining blood cell populations G01N33/5094; chemical analysis of blood groups or blood types G01N33/80)} - A61B 2562/0242: for varying or adjusting the optical path length in the tissue - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - 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 An optical measuring device including a light source, a light beam path adjuster, a light detector and a controller is provided. The light source may emit light toward an object in a predetermined progress direction. The light beam path adjuster may be disposed between the light source and the object and may change a progress path of the light emitted from the light source. The light detector may receive the light that is reflected from the object after passing through the light beam path adjuster. The controller may compare a first effective beam path length of the reflected light that the light detector receives with a predetermined target beam path length and control a refractive angle of the light beam path adjuster based on a beam path length difference between the first effective beam path length and the predetermined target beam path length. ## Claims ### Claim 1 An optical measuring device comprising: a light source configured to emit light toward an object in a predetermined progress direction; a light beam path adjuster that is configured to be disposed between the light source and the object and change a progress path of the light emitted from the light source; a light detector configured to receive the light that is emitted to and reflected from the object after passing through the light beam path adjuster; and a controller configured to compare a first effective beam path length of the light that the light detector receives with a predetermined target beam path length and control a refractive angle of the light beam path adjuster based on a beam path length difference between the first effective beam path length and the predetermined target beam path length. ### Claim 2 (depends on 1) The optical measuring device of claim 1, wherein the controller is further configured to control the refractive angle of the light beam path adjuster according to a beam path adjusting value determined based on the beam path length difference, so that a second effective beam path length of light, which is subsequently emitted from the light source and is received by the light detector, is within a predetermined range of the predetermined target beam path length. ### Claim 3 (depends on 2) The optical measuring device of claim 2, wherein the controller is further configured to determine the beam path adjusting value from the beam path length difference using a predetermined algorithm. ### Claim 4 (depends on 2) The optical measuring device of claim 2, wherein the controller is further configured to determine the beam path adjusting value using a database in which the beam path adjusting value corresponding to the beam path length difference is determined. ### Claim 5 (depends on 2) The optical measuring device of claim 2, wherein the controller is further configured to control the refractive angle of the light beam path adjuster only when the beam path length difference or the beam path adjusting value is less than a predetermined threshold. ### Claim 6 (depends on 5) The optical measuring device of claim 5, wherein the controller is further configured to output an immeasurability notice message indicating that measurement is impossible in response to the beam path length difference or the beam path adjusting value being greater than the predetermined threshold. ### Claim 7 (depends on 1) The optical measuring device of claim 1, wherein the light beam path adjuster is further configured to change the progress path using two immiscible liquids to form a continuous refractive interface. ### Claim 8 (depends on 7) The optical measuring device of claim 7, wherein the light beam path adjuster comprises: two immiscible fluids which are accommodated in one container to form a boundary surface; and a refractive angle adjuster configured to adjust the refractive angle by changing an incline angle of the boundary surface to which the light is incident. ### Claim 9 (depends on 8) The optical measuring device of claim 8, wherein the two immiscible fluids respectively correspond to a conductive fluid and an insulating fluid, and the refractive angle adjuster comprises a plurality of electrodes generating a predetermined size of electric field in the container so that the incline angle of the boundary surface is changed according to an electro-wetting property of the conductive fluid. ### Claim 10 (depends on 1) The optical measuring device of claim 1, wherein the predetermined progress direction of the light emitted from the light source is constant, and the light detector is disposed apart from the light source by a predetermined distance.