# US 2026/0076601 A1 · Biometric measurement device and biometric measurement system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0076601 A1 - Document ID: US20260076601A1 - Status: Published application - Kind: A1 - Application number: 19/401,499 - Filed: 2025-11-26 - Published: 2026-03-19 - Earliest claimed: 2023-06-13 - Assignees: Panasonic Intellectual Property Management Co., Ltd. - Applicants: Panasonic Intellectual Property Management Co., Ltd. - Inventors: TAKAMASA ANDO; SHUNSUKE IMAI - Web page: https://patentgrep.com/patent/US20260076601A1 ## CPC - A61B 5/18: for vehicle drivers {or machine operators} - A61B 5/0075: {by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy (A61B5/0071 takes precedence)} - A61B 5/0077: {Devices for viewing the surface of the body, e.g. camera, magnifying lens} - A61B 5/0245: by using sensing means generating electric signals, {i.e. ECG signals} - A61B 5/16: Devices for psychotechnics (using teaching or educational appliances G09B1/00 - G09B7/00); Testing reaction times {; Devices for evaluating the psychological state} - A61B 5/165: {Evaluating the state of mind, e.g. depression, anxiety} - A61B 5/6893: {Cars} - A61B 5/725: {using specific filters therefor, e.g. Kalman or adaptive filters (specific diagnostics methods using using bioelectric or biomagnetic signals A61B5/316)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A biometric measurement device includes a bandpass filter, an optical detection device, and a processing circuit, the optical detection device includes a first filter configured to transmit red light, a second filter configured to transmit one of green light and blue light, a first optical detection element detecting light from a living body through the first filter, and a second optical detection element detecting the light through the second filter, the processing circuit generates biological information of the living body based on first light detected by the first optical detection element and second light detected by the second optical detection element, and the bandpass filter suppresses transmission of at least a part of light in a wavelength range greater than or equal to 550 nm and less than or equal to 600 nm included in light from the living body incident on the first optical detection element. ## Claims ### Claim 1 A biometric measurement device comprising: a bandpass filter; an optical detection device; and a processing circuit, wherein the optical detection device includes a first filter configured to transmit red light, a second filter configured to transmit one of green light and blue light, a first optical detection element that detects light from a living body through the first filter, and a second optical detection element that detects light from the living body through the second filter, the processing circuit generates biological information of the living body on a basis of first light detected by the first optical detection element and second light detected by the second optical detection element, and the bandpass filter suppresses transmission of at least a part of light in a wavelength range greater than or equal to 550 nm and less than or equal to 600 nm that is included in light from the living body incident on the first optical detection element. ### Claim 2 (depends on 1) The biometric measurement device according to claim 1, wherein spectral characteristics of the first filter have a peak in a wavelength range greater than or equal to 550 nm and less than or equal to 800 nm. ### Claim 3 (depends on 1) The biometric measurement device according to claim 1, wherein spectral characteristics of the first filter have spectral transmittance greater than or equal to 30% in at least a part of the wavelength range greater than or equal to 550 nm and less than or equal to 600 nm. ### Claim 4 (depends on 1) The biometric measurement device according to claim 1, wherein the first optical detection element outputs a first signal based on the first light, the second optical detection element outputs a second signal based on the second light, and the processing circuit generates the biological information on a basis of a difference between a temporal change of an intensity of the first signal and a temporal change of an intensity of the second signal. ### Claim 5 (depends on 1) The biometric measurement device according to claim 1, wherein the optical detection device further includes a third filter configured to transmit an other one of the green light and the blue light and a third optical detection element that detects light from the living body through the third filter, and the processing circuit generates hue information of the living body on a basis of third light detected by the third optical detection element in addition to the first light and the second light. ### Claim 6 (depends on 5) The biometric measurement device according to claim 5, wherein the optical detection device includes first filters including the first filter, second filters including the second filter, third filters including the third filter, first optical detection elements including the first optical detection element, second optical detection elements including the second optical detection element, and third optical detection elements including the third optical detection element, and the processing circuit generates the hue information on a basis of light detected by the first optical detection elements, light detected by the second optical detection elements, and light detected by the third optical detection elements, and determines a first optical detection element, a second optical detection element, and a third optical detection element that correspond to a position of a face of the living body among the first optical detection elements, the second optical detection elements, and the third optical detection elements on a basis of the hue information. ### Claim 7 (depends on 1) The biometric measurement device according to claim 1, wherein maximum spectral transmittance of the bandpass filter in one of green and blue wavelength ranges is lower than maximum spectral transmittance of the bandpass filter in a red wavelength range. ### Claim 8 (depends on 1) The biometric measurement device according to claim 1, further comprising a light source that emits the red light and the one of the green light and the blue light for irradiating the living body. ### Claim 9 (depends on 8) The biometric measurement device according to claim 8, wherein a peak intensity of the one of the green light and the blue light is lower than a peak intensity of the red light. ### Claim 10 A biometric measurement device comprising: an optical detection device; and a processing circuit, wherein the optical detection device includes a first filter configured to transmit red light, a second filter configured to transmit one of green light and blue light, a first optical detection element that detects light from a living body through the first filter, and a second optical detection element that detects light from the living body through the second filter, the processing circuit generates biological information of the living body on a basis of first light detected by the first optical detection element and second light detected by the second optical detection element, and the first filter is an interference filter including a dielectric multi-layer and suppresses transmission of at least a part of light in a wavelength range greater than or equal to 550 nm and less than or equal to 600 nm. ### Claim 11 A biometric measurement system comprising: a light source that is installed on a mobile object and emits blue light for irradiating an occupant of the mobile object; an optical detection device that is installed on the mobile object and detects reflected light from the occupant generated by the blue light; and a processing circuit, wherein the optical detection device includes a first filter configured to transmit red light, a second filter configured to transmit the blue light, a first optical detection element that detects light from the occupant through the first filter, and a second optical detection element that detects the reflected light from the occupant through the second filter, and the processing circuit generates biological information of the occupant on a basis of light detected by the first optical detection element and light detected by the second optical detection element. ### Claim 12 (depends on 11) The biometric measurement system according to claim 11, wherein the blue light includes light having a wavelength of 470 nm. ### Claim 13 (depends on 11) The biometric measurement system according to claim 11, wherein the processing circuit determines a psychological state of the occupant on a basis of the biological information and causes the light source to control output of the blue light on a basis of the psychological state. ### Claim 14 (depends on 13) The biometric measurement system according to claim 13, wherein the processing circuit determines whether or not a level of stress or excitement of the occupant is high on a basis of the biological information, and in a case where the processing circuit determines that the level of stress or excitement is high, the processing circuit causes the light source to increase an intensity of the blue light. ### Claim 15 (depends on 11) The biometric measurement system according to claim 11, wherein the light source is installed near a seat on which the occupant sits. ### Claim 16 (depends on 11) The biometric measurement system according to claim 11, wherein the mobile object is an automobile, the light source and the optical detection device are installed on a center pillar or a rear pillar of the automobile, and the optical detection device detects reflected light from a cheek of the occupant. ### Claim 17 (depends on 11) The biometric measurement system according to claim 11, wherein the mobile object is an automobile, and the optical detection device is installed on a steering wheel or a glove compartment of the automobile.