588results about "Optical sensors" patented technology

A chip package includes a housing, one or more electrical connections coupled to an exterior of the housing, a photonic integrated circuit, and a scanning unit. Both the photonic integrated circuit and the scanning unit are disposed within the housing. The photonic integrated circuit has at least one waveguide designed to guide a beam of light. The scanning unit is designed to laterally scan the beam of light across a focal plane outside of the housing. The scanning unit is aligned with the photonic integrated circuit such that the beam of light is coupled between the photonic integrated circuit and the scanning unit.

An optical physiological sensor configured to be secured to a user's nose includes a first prong configured to be positioned proximate an outside portion of the nose, a second prong configured to be positioned proximate an inside portion of the user's nose, a winged portion coupled to the first prong and configured to contact tissue of the user, one or more emitters configured to emit light of one or more wavelengths into the tissue, and one or more detectors configured to detect at least a portion of the light emitted from the one or more emitters after attenuation through at least a portion of the tissue. In some configurations, the winged portion comprises a width that is greater than a width of the second prong. In some configurations, at least a portion of the winged portion is curved toward the second prong.

Embodiments herein relate to an optical chemical sensor system that is wearable and includes a microneedle array. In one embodiment, the invention includes a chemical sensing device having a set of microneedles and sensor elements. The sensor element may include a first low refractive index gel layer, a second low refractive index gel layer, and a chromogenic ionophore sensing film disposed between the first low refractive index gel layer and the second low refractive index gel layer. In one embodiment, a retardation layer may be disposed between the sensor element and a set of microneedles. An optical emitter may be configured to emit light into the sensor element. An optical detector may be configured to receive light from the sensor element. Other embodiments are also included herein.

A biometric wearable device (e.g. finger ring or smart watch) has optical sensors to measure body oxygenation level, hydration level, glucose level, heart rate, heart rate variability, and / or blood pressure. Light from light emitters is transmitted through body tissue and changes in the light are analyzed. The angles and / or vectors along which the light is transmitted through body tissue can be automatically changed by the device in order to scan different tissue regions and / or different tissue depths.

An imaging system is provided comprising an imaging probe and at least one delivery device. The imaging probe comprises an elongate shaft, a rotatable optical core and an optical assembly. The elongate shaft comprises a proximal end, a distal portion, and a lumen extending between the proximal end and the distal portion. The rotatable optical core is positioned within the lumen of the elongate shaft and comprises a proximal end and a distal end. The rotatable optical core is configured to optically and mechanically connect with an interface unit. The optical assembly is positioned in the elongate shaft distal portion and proximate the rotatable optical core distal end. The optical assembly is configured to direct light to tissue and collect reflected light from the tissue. The imaging probe is constructed and arranged to collect image data from a patient site. The at least one delivery device is constructed and arranged to slidingly engage the imaging probe. Methods of introducing the imaging probe and the at least one delivery catheter into a patient are also provided.

Medical-device visualization systems and methods utilize patient-based reference framing to improve shape sensing for elongate medical devices. A medical-device visualization system includes, in some embodiments, a stylet, patient-wearable sensors, and a console. The stylet includes an optical fiber and a field generator. Each of the patient-wearable sensors senses a field generated by the field generator. The console instantiates medical-device visualization processes for visualizing the elongate medical devices by way of at least the stylet. The medical-device visualization processes include a shape-sensing process, a registration process, and a reference-framing process. The shape-sensing process determines a shape of the stylet in real-time from reflected optical signals from the optical fiber. The registration process registers the distal tip of the stylet in real-time at each sensor of the patient-wearable sensors. And the reference-framing process places the stylet with its shape in a patient-based reference frame established by the patient-wearable sensors.

Methods, systems, and devices for operating a wearable device are described. A wearable device may include an optoelectronic-transmitter configured to output an optical signal with a narrow angular spread. The optoelectronic-transmitter may be at least partially covered with a material protrusion that has at least one dimension based on the angular spread. The wearable device may include an aperture within an inner surface of a housing of the wearable device. The aperture may be configured to enable propagation of the optical signal through the housing, and a width of the aperture may be based on the angular spread such that the aperture permits propagation of the optical signal within the angular spread. An optoelectronic-detector configured to receive the optical signal may be disposed at a distance from the optoelectronic-transmitter that is based on the angular spread.

An electronic interface device is configured for use with associated optics for employing coded light for illuminating a liquid, gaseous, or other analyte or target, such as for measuring or determining a composition or other property of the analyte or target. The arrangement can help enable a far higher level of performance, such as for spectral analysis, imaging, or both. A shared common clock on both the illumination and receive sides of the system can be included, such as together with one or more of reference detection, per-channel wavelength-dependent modulation, multiple concurrent feedback loops at different levels, orthogonal and circulant codes, phase-scrambling to better utilize ADC dynamic range, oversampling, and other signal processing can be provided. Modulation codes can optionally employ a clock divider, such as which can be configured to satisfy one or more specified constraints.

A non-invasive diagnostic system assesses the optimal timing for aortic valve replacement (AVR) by quantifying left-ventricular Frank-Starling reserve before irreversible myocardial damage occurs. The system (i) acquires left-ventricular ejection time (LVET) and other systolic-time intervals from optical or vibrational sensors positioned on the patient, (ii) induces a reversible preload change—e.g., passive leg raise or posture transition—to create a controlled venous-return increment, (iii) processes the paired baseline and post-maneuver waveforms to extract systolic time interval metrics, and (iv) analyzes the ΔLVET / Δpreload relationship against historical or population references. A diminished LVET response signals loss of contractile reserve, enabling timely AVR while myocardial changes remain reversible. The platform integrates measurement hardware, a data-processing engine, a data-analysis module, and a reporting interface, and may be configured as a wrist, ring, chest, or ear sensor. The method can be implemented at point-of-care without operator-dependent imaging or invasive monitoring.

Methods, systems, and devices for a wearable ring device are described. In some cases, a printed circuit board (PCB) of a wearable ring device may include a first wing extruding from the PCB in a first direction and in accordance with a first angle between a bottom face of the first wing and a top face of the PCB, and a second wing extruding from the PCB in a second direction and in accordance with a second angle between a bottom face of the second wing and the top face of the PCB. In such cases, a light emitting component may be positioned on the first wing and a light detecting component may be positioned on the second wing, such that a first optical path may be defined between the first light emitting component and the first light detecting component based on the first angle and the second angle.

According to various embodiments, a sensing device for measuring oxygen concentration cycles in breath is disclosed. The sensing device includes a laser configured to emit light at an A-band of oxygen, a lens configured to collimate the light, and a multi-pass cell configured to contain a replaceable sample cell. The light passes through the multi-pass cell and is attenuated by oxygen in the sample cell. The sensing device further includes a photodetector configurated to convert the attenuated light into an electrical signal, and a lock-in amplifier or an equivalent processing circuit configured to determine oxygen concentration from the electrical signal.

Aspects relate to mechanisms to control the effective optical path length through skin tissue for non-invasive optical spectroscopy measurements. An apparatus can include a path length control part configured to control the effective optical path length of diffusely scattered light transmitted through skin tissue to produce a target effective optical path length. The apparatus may further include a spectral sensor, a detector, and a light source configured to produce input light directed towards the path length control part or the spectral sensor. The detector is configured to obtain a spectrum of an analyte under test based on the diffusely scattered light. The spectral sensor is configured to either receive the input light, produce modulated light based on the input light, and direct the modulated light to the skin tissue, or to receive the diffusely scattered light from the skin tissue and obtain the spectrum using the detector.

An illustrative optical measurement system may include a module comprising a light source configured to emit light directed at a target, a plurality of detectors configured to detect target photon arrival times of target photons of the light after the light is scattered by the target, and a reference detector configured to detect reference photon arrival times of reference photons of the light after the light is reflected within the module. The system may further include a controller configured to determine, based on an output from the reference detector, an instrument response function (IRF) of the module.

Systems and methods are disclosed for r monitoring a subject by coupling a wearable device with one or more noninvasive health sensors including an optical sensor and at least one electrical sensor to the subject, the optical sensor comprising one or more light emitting diodes at different wavelengths and one or more detectors; using the optical sensor, driving the one or more light emitting diodes at different wavelengths toward the skin of the subject and detecting the emergent light with the one or more detectors; calibrating data from the one or more noninvasive health sensors with clinical grade health data to track the subject's medical data during one or more subject activity conditions; capturing current additional subject data or current activity condition; and estimating the subject's current medical data with the one or more noninvasive health sensors and the current additional subject data or activity condition.

Methods, systems, and devices for adaptive sensors are described. A system may acquire physiological data from a user via multiple optical channels of a wearable device, where each optical channel includes a light-emitting component and a photodetector. The system may determine respective measurement quality metrics and respective power consumption metrics associated with each optical channel based on the physiological data. Additionally, the system may select one or more optical channels of the multiple optical channels of the wearable device based on a comparison of the respective measurement quality metrics and the respective power consumption metrics associated with each optical channel. The system may acquire additional physiological data using the one or more optical channels based on the selecting.

Disclosed herein is a near-infrared imaging system for identifying a target feature in an object. The system comprises a near-infrared transmitter receiver array for transmitting near-infrared radiation into the object and receiving corresponding near-infrared radiation emitted from the object and a data processing system (215) configured to process near-infrared radiation received via the near-infrared transmitter receiver array in accordance with a near- infrared imaging model (216). The system further comprises signal transmitting means (205) arranged to transmit one or more further signals into the object; and signal receiving means (206) arranged to receive the one or more further signals from the object. The data processing system (215) is further configured to process one or more characteristics of the one or more further signals received by the signal receiving means (206) to generate one or more constraints (218) to apply to the near-infrared imaging model (216).

A pressure measurement system includes a pressure pod with two chambers separated by a diaphragm such that a deformation / movement of the diaphragm is indicative of a difference between the pressures of the two chambers. Such deformation / movement is detected by a device that has no physical contact with the diaphragm, for example, by an optical detector that detects a change in the shape of the diaphragm or a movement of a protrusion on the diaphragm.

Skin torsionometers, methods and systems for using such skin torsionometers, and systems including a skin torsionometer, computing device configured to capture images, and an application (app) for determining the tautness of skin are described herein.

An illumination device and an imaging device. The illumination device is applied to an imaging section for imaging an object, characterized by comprising: a first objective cover composed of a light-transmissive member, disposed to direct light from the object to the imaging section in order for the imaging section to image the object, an area of a face substantially orthogonal to an optical axis of the imaging section being set to a prescribed first area; a second objective cover, an area of a face substantially orthogonal to the optical axis of the imaging section being set to a prescribed second area smaller than the first area; a first light source for illuminating the object via the first objective cover; and a second light source for illuminating the object via the second objective cover.

Disclosed is a method for characterising tinnitus in a subject using functional near-infrared spectroscopy (fNIRS). The method comprises receiving data comprising fNIRS signals indicative of cortical activity in one or more regions of the subject's brain at a processing device. The received data is processed using the processor device by inputting one or more feature values into a model, where the feature values include one or more features of the received data. The model is configured to provide one or more classification results based on the one or more feature values, the classification results being indicative of at least one characteristic of tinnitus in the subject. Also disclosed is a system for applying the disclosed method.

A living body information measuring apparatus includes: an enclosure having an enclosure surface that comes into contact with an object under inspection in a measurement state in which living body information on the object under inspection is measured; a light measurement portion disposed in the enclosure and configured to radiate measurement light to the object under inspection and receive reflected light; and a light transmissive member configured to transmit the measurement light and the reflected light, having a contact surface that comes into contact with the object under inspection in the measurement state, and including at least one protrusion and a recess at least a part of which is surrounded by the at least one protrusion, the at least one protrusion and the recess being located at the contact surface.

An imaging system for a patient is provided. The system includes an imaging probe having an elongate shaft with a proximal end, a distal portion, and a lumen extending between the proximal end and the distal portion. A rotatable optical core is positioned within the lumen of the elongate shaft. An optical assembly is positioned proximate the distal end of the rotatable optical core and is configured to direct light to tissue and collect reflected light from the tissue. An imaging assembly is constructed and arranged to optically couple to the imaging probe and the imaging assembly is configured to emit light into the imaging probe and receive the reflected light collected by the optical assembly.

An apparatus for monitoring an oxygen saturation level of a wearer of the apparatus includes a processor, a memory operably coupled to the processor, a first housing portion, a second housing portion, and a connection member. The first housing portion includes at least one light-emitting diode (LED), and the second housing portion includes a photodetector. The connection member is mechanically coupled to each of the first housing portion and the second housing portion. The apparatus is sized and shaped to be worn about a portion of an ear of a wearer of the apparatus. During operation, the at least one LED emits light in a direction toward the photodetector. A portion of the emitted light passes through the portion of the ear prior to arriving at the photodetector. The photodetector detects a signal in response to the portion of the emitted light, and the memory stores instructions to cause the processor to calculate an oxygen saturation level of the wearer based on the detected signal.

The present application is directed to a device for inspecting a keratinous surface of a user, preferably a hair sample, comprising a housing in which an image sensor is arranged to receive measurement light emitted from a measuring area configured to accommodate the keratinous surface, through a measurement window in a front wall of the housing, over a corresponding imaging light path, the device being further equipped with an illumination ring arranged in the housing rear of the measurement window around the imaging light path, said illumination ring having two opposed partially peripheral illumination portions separated by two opposed complementary partially peripheral non-illuminating portions, the illuminating portions being further configured to illuminate the measuring area through the measurement window over a illumination light path, said illumination light path having an angle of incidence comprised between 30 to 60°, preferably about 45°.

A processor of an ear-worn device such as an earbud may receive acceleration data from an accelerometer of the earbud. The processor may determine a position of a body wearing the earbud based on the acceleration data. The processor may determine a pathology of the body. The processor may generate, based on the position of the body and the pathology, a therapy recommendation. The processor may output an indication of the therapy recommendation via the earbud or one or more other devices.

A system and method for measuring pulse wave velocity. In some embodiments, a system includes: a pulse timing sensor, including: a first wearable speckleplethysmography sensor; and a second wearable speckleplethysmography sensor, the first wearable speckleplethysmography sensor being configured to measure a blood flow velocity at a first point, on a first artery, and the second wearable speckleplethysmography sensor being configured to measure a blood flow velocity at a second point on a second artery.

An ear-worn device may include an accelerometer and / or an electroencephalography (EEG) sensor to provide recommendations based on user activity and / or physiological responses. The ear-worn device may use the accelerometer to capture acceleration data to assess the wearer's movement rate, and detect changes. Using data from the EEG sensor, the processor may detect eyelid blinks and other signals of fatigue. The processor may generate a treatment recommendation based on any combination of the movement rate, changes, eyelid blinks, and / or signals of fatigue.

A system for measuring cardiovascular data includes an elongate member having a channel, a first expandable member carried by the elongate member and movable between a collapsed state and an expanded state by adjustment initiated externally of a subject, a first sensor disposed on a surface of the elongate member, second and third sensors disposed on a surface of the first expandable, a first optical sensor located at a first location in relation to the distal end of the elongate member and configured for obtaining photoplethysmographic data, and wherein the first expandable member in its expanded state is configured to interface with the subject's larynx for delivery of at least oxygen gas into the respiratory system of the subject, and the second and third sensors are configured to contact tissue in proximity to the larynx when the first expandable member is in its expanded state.

An apparatus for intraoperative nerve identification and / or visualization of a target of interest of a living subject comprises a light source; an imaging head configured to acquire a polarized diffuse reflectance spectral image from the illuminated target of interest; and a controller configured to control the imaging head and to process the acquired polarized diffuse reflectance spectral image.

Offset illumination using multiple emitters in a fluorescence imaging system is described. The system includes an emitter to emit pulses of electromagnetic radiation and an image sensor including an array of pixels to sense reflected electromagnetic radiation. The emitter includes a first emitter and a second emitter to emit electromagnetic radiation of different wavelengths. The system causes at least a portion of the pulses of electromagnetic radiation emitted by the emitter to include one or more of a hyperspectral emission, a fluorescence emission, or a laser mapping mode.