77results 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.

In one embodiment, an apparatus includes a needle that includes a substantially cylindrical shaft and a lumen, which includes a hollow space located within the shaft. The shaft includes a tip located at an end of the shaft, where the tip includes an opening. The apparatus also includes an optical fiber that includes an end face. The end face and at least a portion of the optical fiber are located within the lumen. The optical fiber is configured to transmit a pump-Stokes beam of light along the optical fiber toward the tip of the needle and to the end face, where the pump-Stokes beam is emitted from the end face and directed to a sample. The apparatus further includes a catheter that includes a catheter connector and a catheter tube having a substantially cylindrical shape, where the catheter tube surrounds at least a portion of the needle shaft.

A wearable device includes an image sensor having a matrix of pixels. Each pixel includes at least one light emitter and at least one photosensor. A first group of pixels of the matrix includes one light emitter configured to emit wavelengths selected among near and short-wave infrared wavelengths. A second group of pixels of the matrix includes a photosensor sensitive to the wavelengths selected among near and short-wave infrared wavelengths.

In one embodiment, an apparatus includes a needle that includes a substantially cylindrical shaft and a lumen. The lumen includes a hollow space located within the shaft, and the shaft includes a tip located at an end of the shaft. The apparatus also includes an optical fiber that includes an end face, where the end face and at least a portion of the optical fiber are located within the lumen. The optical fiber is configured to transmit a pump-Stokes beam of light along the optical fiber toward the tip of the needle and to the end face, where the pump-Stokes beam is emitted from the end face and directed to a sample located in the lumen. The pump-Stokes beam is configured to produce a Raman signal by coherent Raman scattering of the pump-Stokes beam while propagating through the sample.

The application provides a heart rate detection module and an electronic device; wherein the heart rate detection module comprises a light emitting element, a light receiving element and a Fresnel film; the light emitting element and the light receiving element are arranged in optical isolation, the Fresnel film is located on the same side of the light emitting element and the light receiving element, and the light emitting surface of the light emitting element faces the Fresnel film; the Fresnel film has a light absorbing medium therein, and the light absorbing medium is located between the light emitting element and the light receiving element in the direction perpendicular to the Fresnel film. According to the heart rate detection module and the electronic device provided by the application, the crosstalk phenomenon of the detection light emitted by the light emitting element in the Fresnel film can be reduced / attenuated, that is, the light leakage in the Fresnel film can be effectively inhibited to weaken the light noise of the heart rate measurement, and the signal-to-noise ratio of the heart rate detection module can be improved.

The present invention relates to systems, methods and algorithms for determination of heart pump function and their use in livings subject are described.The invention further relates to complementary parts of such systems that work best in combination.Medical catheters, sheaths and shafts are disclosed that carry an arrangement of integrated digital sensor systems-on-chip (SoC) in the portion thereof residing inside the body. These devices combine at their portion that resides inside the body, the complete chain of signal transduction, signal analog-to-digital conversion and digital signal transmission, and allow to acquire single and multiple physical entities in a single setup. In specific instances the devices integrate wireless data transfer functionality, and in specific instances they integrate wireless energy harvesting for battery-free functionality.The present invention further describes complementary monitor systems that are suited for reception, processing and analysis of data acquired by such catheters / sheaths / shafts to yield a robust assessment of cardiac performance.Moreover, the present invention relates to innovations which render such systems applicable to patients with and without cardiac assist devices.

Methods for identifying micron-scale features below a surface of a tissue include emitting from one or more emitters at the surface of the tissue electromagnetic signals capable of penetrating tissue of different densities; obtaining from a sensor positioned at the surface of the tissue electromagnetic signals reflected from or transmitted through tissues of different densities as one or more obtained images; inputting the one or more obtained images into a machine learning model, wherein the machine learning model is trained to: identify scattering of certain electromagnetic signals comprising each of the one or more obtained images; correct for the scattering to create one or more images tissues at one or more subsurface depths; and identify micron-scale features of interest within the one or more images of tissues at the one or more subsurface depths.

An optical sensor, a calibration method, and an apparatus for estimating biological information are disclosed. According to one embodiment, a method of calibrating an optical sensor can include acquiring a first characteristic of an external light source by a detector of the optical sensor when an internal light source of the optical sensor is turned off, driving the internal light source, acquiring a second characteristic of the internal light source and the external light source by the detector, and acquiring a reference characteristic of the internal light source for calculating absorbance of an object based on the first characteristic and the second characteristic.

A noninvasive physiological sensor can include a first body portion and a second body portion coupled to each other and configured to at least partially enclose a user's finger. The sensor can further include a first probe coupled to one or more emitters and a second probe coupled to a detector. The first probe can direct light emitted from the one or more emitters toward tissue of the user's finger and the second probe can direct light attenuated through the tissue to the detector. The first and second probes can be coupled to the first and second body portions such that when the first and second body portions are rotated with respect to one another, ends of the first and second probes can be moved in a direction towards one another to compress the tissue of the user's finger.

A wearable display device includes a housing formed in a ring or cylindrical shape, a display panel that detects a first light-sensing signal by emitting and receiving light in a first direction and detects a second light-sensing signal by emitting and receiving light in a second direction and is disposed inside the housing in a ring or cylindrical shape, and a main driver circuit that detects a pulse wave signal of a user and measure a biometric information of the user using the first light-sensing signal, and senses a movement of a touch by a part of the user's body using the second light-sensing signal. The first direction is an inward direction toward a center of the ring or cylindrical shape, and the second direction is an outward direction of the housing.

A PPG sensor, an electronic device, and a wearable device are provided. The PPG sensor includes: a first light-emitting unit, configured to emit a first optical signal; a second light-emitting unit, configured to at least emit another first optical signal; and a plurality of photoelectric sensors, wherein the first light-emitting unit and M photoelectric sensors of the plurality of photoelectric sensors form a first measurement channel, the M photoelectric sensors are connected in parallel, and a first photocurrent signal is obtained based on the first measurement channel; the second light-emitting unit and N photoelectric sensors of the plurality of photoelectric sensors form a second measurement channel, the N photoelectric sensors are connected in parallel, and a second photocurrent signal is obtained based on the second measurement channel; wherein N is greater than M, and both M and N are natural numbers.

An optical module for Raman spectroscopy includes a laser source mounted on a substrate and configured to emit electromagnetic radiation at a target. The optical module also includes a plurality of sensors mounted on the substrate and configured to detect electromagnetic radiation scattered from the target. The optical module further includes a first filter disposed over one or more of the plurality of sensors. The first filter is substantially transparent to a first wavelength band corresponding to a Raman scattering wavelength of a first molecule of the target and opaque to wavelengths outside the first wavelength band.

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.

The method for operating a medical image processing device using augmented reality according to the present disclosure includes the steps of: acquiring a first image including vascular information and bone tissue information obtained by tomography from a first external device; acquiring a second image including facial structures and facial curvature obtained by 3D photography from a second external device; extracting facial feature points from facial specific information including the vascular information, the bone tissue information, the facial structures, and the facial curvature; aligning the first image to the second image based on the facial feature points; generating a composite image by 3D modeling the first image aligned with the second image; projecting the composite image onto a patient's face; and displaying a first layer corresponding to the vascular information and a second layer including the bone tissue information on the projected image.

In one embodiment, an apparatus includes a needle that includes a substantially cylindrical shaft that includes a tip located at a distal end of the shaft, where the tip includes an opening. The apparatus also includes an optical waveguide located within the shaft of the needle. The optical waveguide is configured to (i) receive a pump-Stokes beam of light emitted from an end face of an optical fiber, where the optical-fiber end face is located at a proximal end of the shaft opposite the distal end and (ii) convey the pump-Stokes beam along the optical waveguide to the tip of the needle, where the pump-Stokes beam is emitted from the optical waveguide and directed through the opening of the needle to a sample.

An optical measurement device (100) for obtaining optical measurements from a tissue region (110), is provided. The optical measurement device includes an optical source (120); an optical detector (130); a first optical waveguide (140); and a second optical waveguide (150). In one option, i) a proximal end portion (140Pep) of the first optical waveguide adjoining the proximal end (140') of the first optical waveguide, and at least a portion of the optical source (120), are in direct contact with a first material (160) having a refractive index (n1) that is less than a refractive index (n3) of the first optical waveguide (140), and also less than a refractive index (nS) of the optical source (120), for containing the optical radiation within the first optical waveguide (140) and / or within the optical source (120), respectively. In another option, ii) a proximal end portion (150Pep) of the second optical waveguide adjoining the proximal end (150') of the second optical waveguide, and at least a portion of the optical detector (130), are in direct contact with a first material (160) having a refractive index (n1) that is less than a refractive index (n3) of the second optical waveguide (150), and also less than a refractive index (nD) of the optical detector (130), for containing the optical radiation within the second optical waveguide (150) and / or within the optical detector (130), respectively.

A height compensation system for a patient table, including: a light reflection block, which is disposed on a gantry side of a medical device, and is configured to reflect a received optical signal; a photoelectric detector, which is disposed on the patient table opposite to the light reflection block, and is configured to emit an optical signal outward and detect a reflected signal of the optical signal; and a controller, which is communicably connected to the photoelectric detector, and configured to control, when the photoelectric detector detects a reflected signal reflected by the light reflection block, the patient table to move upward in a vertical direction until the photoelectric detector does not detect the reflected signal reflected by the light reflection block.

Near Infrared Spectroscopy (NIS) is employed to non-invasively detect health-related conditions, such as blood glucose concentrations, and accounting for non-linear interference from human tissues, the differences among individuals, and multiple interfering compounds within blood. A multi-layered artificial neural network can be used to assess these relationships and accurately estimate blood glucose levels. Diffuse reflectance spectrum at six different wavelengths are analyzed with a neural network, resulting in a correlation coefficient as high as 0.9216 when compared to a standard electrochemical glucose analysis test.

An apparatus for estimating bio-information according to an embodiment of the present disclosure includes a processor configured to obtain spectra from an object, obtain a component produced based on a change in pressure applied to the object, correct the spectra based on the obtained component produced based on the change in pressure, and estimate bio-information of the object based on the corrected spectra.

In an image forming apparatus (1), an excitation light source (10) irradiates an object with excitation light for a first fluorescence substance and excitation light for a second fluorescence substance, a notch filter (20) transmits fluorescence in a wavelength range specific to each fluorescence substance among return light from the object, an imaging unit (30) separately captures images of the fluorescence in respective wavelength ranges, and an image processing unit (40) superimposes these images.

A wearable device (1), comprising a plurality of emitters (2) arranged on a carrier (4), and an object intake (5) is provided. Each emitter (2) is configured to emit electromagnetic radiation towards the object intake (5), the emitters (2) are distributed around the object intake (5) and the carrier (4) is arranged on the side of the emitters (2) facing away from the object intake (5). The wearable device (1) is configured to perform detection of a movement of an object (10) arranged in the object intake (5) and / or tactile sensing. At least one emitter can be a micro-LED. Furthermore, a method for operating a wearable device is provided.

A system and method for measuring phase relationships comprises a controller, a display, a first light source, a second light source and at least two optical detectors. The light sources and detectors are contained in a sensor patch that is part of a patient wearable headset, wherein when the headset is placed on the patient's head and the sensor patch is held in place over the scalp of the patient's forehead. Light signals transmitted by the light sources into the brain of the patient are detected by the optical detectors, analyzed and processed by the controller, and displayed in the form of a calculated phase value result.

In one embodiment, an apparatus includes a needle that includes a substantially cylindrical shaft and a lumen. The lumen includes a hollow space located within the shaft, and the shaft includes a tip located at an end of the shaft, where the tip includes an opening. The apparatus also includes an optical fiber that includes an end face, where the end face and at least a portion of the optical fiber are located within the lumen. The optical fiber is configured to transmit a pump-Stokes beam of light along the optical fiber toward the tip of the needle and to the end face, where the pump-Stokes beam is emitted from the end face and directed through the opening of the needle to a sample.

One aspect of the present disclosure provides a non-invasive intracranial pressure detection device comprising an interferometric near-infrared spectroscopy (iNIRS) system, the iNIRS system comprising a light source configured to emit light, a sample delivery channel coupled to the light source and arranged to be coupled to the subject's scalp for directing light from the light source towards the subject's brain tissue, a reference channel coupled to the light source for receiving light from the light source, an emitting device comprising the reference channel, and a light detection device configured to couple the subject's scalp to the emitting device, the light detection device comprising an interferometric photodetector configured to receive (i) reference light from the reference channel and (ii) sample light from the subject's brain, the sample light including light emitted from the light source, the interferometric photodetector being arranged to couple the sample light and the reference light to provide a combined optical signal including one or more components of the beat frequency between the sample light and the reference light, the light detection device comprising a control device configured to process data indicative of the combined optical signal to determine an indication of the intracranial blood pressure of the subject based on at least one characteristic of the pulsatile waveform of one or more identified pulses of blood flow through the subject's brain.

Offset illumination using multiple emitters in a fluorescence imaging system is described. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The emitter comprises a first emitter and a second emitter for emitting different wavelengths of electromagnetic radiation. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises one or more of a hyperspectral emission, a fluorescence emission, and / or a laser mapping pattern.

Methods, systems, and devices for optical coatings for glass sheets in wearable devices are described. The wearable device ring may include a housing and one or more light sources and one or more detectors at least partially disposed within the housing. The wearable ring device may include a layer of glass at least partially coupled to the housing and positioned to receive at least a first portion of light emitted from the one or more light sources. In some cases, the wearable ring device may include one or more reflective surfaces coupled to the layer of glass and positioned to reflect at least a portion of the first portion of light.

Disclosed are methods and apparatuses for microvascular system imaging. In some embodiments, an apparatus for microvascular system imaging is a probe including at least one high-resolution image sensor module, at least one lens set, one or more optical filters, an illumination source, and a housing. In some embodiments, the lens set may be a miniature lens set. In some embodiments, the housing may be a tube structure. In some embodiments, the tube may be covered with a protective and / or sterile cover. The cover may be optically non-distorting. The imaging probe may additionally include a removable cap.

An optical sensor for detecting an analyte. The optical sensor may include a hydrogel film, and one or more cholesteric liquid crystal (CLC) droplets mixed with the hydrogel film. Each of the one or more cholesteric liquid crystal droplets may include a plurality of liquid crystal molecules. The optical sensor may also include modification molecules attached to the one or more cholesteric liquid crystal droplets. The one or more cholesteric liquid crystal droplets may be doped with a photoluminescent dye, may be configured to generate an emission beam in response to a pump laser beam incident onto the one or more cholesteric liquid crystals droplets, and may be configured as whispering gallery mode (WGM) resonators such that a wavelength of the emission beam is shifted in response to the modification molecules coming in contact with a chemical derived from the analyte, thereby detecting the analyte.

This invention discloses an apparatus for measuring oxygen saturation. The apparatus includes a circuit system configured to: measure a first diode voltage at a light-emitting diode (LED) when a first current is applied through the LED; measure a second diode voltage at the LED when a second current is applied through the LED; and measure a third diode voltage at the LED when a third current is applied through the LED. The circuit system is further configured to: determine a series resistance based on the first, second, and third diode voltages; and determine the intensity of a received photon signal corresponding to an output photon signal generated using the LED. The circuit system is further configured to determine the oxygen saturation level based on the intensity of the received photon signal and the series resistance.

The present disclosure provides a physiological monitoring system that can include a hardware processor. The hardware processor can access first optical data corresponding to a water-dependent radiation wavelength that is attenuated through a medium and detected by a detector. The hardware processor can access second optical data corresponding to a water-independent radiation wavelength that is attenuated through the medium and detected by the detector. The hardware processor can determine a hydration index of the medium based on the first and second optical data.