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4334 results about "Light detector" patented technology
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Pulse oximetry sensor adaptor
InactiveUS6993371B2Avoid complex processCost of very criticalDiagnostic recording/measuringSensorsAudio power amplifierPulse oximetry
An adapter allows the interconnection of a sensor originating from one manufacturer to be coupled with conventionally incompatible monitors originating from other manufacturers to form a properly functioning pulse oximetry system. The adapter matches a sensor driver in a monitor to the current requirements and light source configuration of a sensor. The adapter also matches a sensor's light detector signal level to the dynamic range requirements of a monitor preamplifier. Further, the adapter provides compatible sensor calibration, sensor type and security information to a monitor. The adapter may have a self-contained power source or it may derive power from the monitor, allowing both passive and active adapter components. The adapter is particular suited as an adapter cable, replacing a conventional patient cable or sensor cable as the interconnection between a sensor to a monitor in a pulse oximetry system.
Owner:JPMORGAN CHASE BANK NA
Analyte monitor
Provided is an analyte monitoring device having a housing, the device comprising: a plurality of needles, each having a tip, a retracted position, a position wherein the tip is extended from the housing a distance adapted to pierce skin; an electrically or spring powered needle pushing apparatus movable to separately engage each of the needles to move each from the retracted position to the extended position; an energy source located within the housing; a plurality of analysis sites comprising an analysis preparation, each adapted to receive liquid from the needles to wet the analysis preparation; one or more light sources adapted to direct light at the analysis sites; one or more light detectors adapted to receive light from the analysis sites; and a processor.
Owner:INTUITY MEDICAL INC
Depth of consciousness monitor including oximeter
Owner:JPMORGAN CHASE BANK NA
User interface improvements for medical devices
ActiveUS20060229557A1Smooth and quick and efficient maneuveringData processing applicationsLocal control/monitoringOperant conditioningUser interface
A method and apparatus is disclosed for operating a medical device with a screen having an improved graphical user interface, which selectively reallocates screen display for both single and multi-channel pumps. Channel indicators associate operation information with a specific delivery channel. Patient or drug order verification is facilitated with a rendering of the patient or the entire drug order / label on the screen. Decimal numbers are presented in vertically offset decimal format. A dual function button cancels the current operation and, after a delay, clears entered parameters. An area sensitive scrollbar cycles through information at various speeds. Screen brightness is adjusted based on an ambient light detector. A screen saver mode activates based on several operating conditions. The screen is incorporated in a removable user interface.
Owner:ICU MEDICAL INC
Subcutaneous analyte sensor
Assembly and method for measuring the concentration of an analyte in a biological matrix. The assembly includes an implantable optical-sensing element that comprises a body, and a membrane mounted on the body in a manner such that the membrane and the body define a cavity. The membrane is permeable to the analyte, but is impermeable to background species in the biological matrix. A refractive element is positioned in the cavity. A light source transmits light of a first intensity onto the refractive element, and a light detector receives light of a second intensity that is reflected from the cavity. A controller device optically coupled to the detector compares the first and second light intensities, and relates the intensities to analyte concentration.
Owner:ROCHE DIABETES CARE INC
Stray light correction method for imaging light and color measurement system
ActiveUS6975775B2Eliminate the effects ofIncrease grayscaleTelevision system detailsImage enhancementGray levelOptoelectronics
A stray light correction method for image light and color measurement system, uses a solid-state light detector array such as a charge-coupled device to record an image, so that a gray level value for each pixel of the solid-state light detector array is obtained. An average gray level value of the solid-state light detector array is calculated based on the gray level value for each pixel. The average gray level value is further multiplied with a stray light factor to obtain a correction value. The gray level value of each pixel is then subtracted with the correction value, such that the stray light effect can be eliminated.
Owner:RADIANT ZEMAX
Photonic touch screen apparatus and method of use
InactiveUS20060227120A1Cathode-ray tube indicatorsInput/output processes for data processingTotal internal reflectionPhotonics
A method and an apparatus are disclosed for determining the position of a stimulus in two axes on a surface. The apparatus includes: a transparent waveguide panel with parallel top and a bottom surfaces and at least one edge that is perpendicular to the top and bottom surfaces; a light source that is directed to the edge of the waveguide to produce light that is contained within the waveguide by Total Internal Reflection and a light detector for producing an electrical signal that is representative of an image of the light emitted by the waveguide. The light detector is positioned to receive light emitted by Frustrated Total Internal Reflection from the transparent wave guide when a physical stimulus is placed in contact with the top surface of the transparent waveguide.
Owner:EIKMAN ADAM
Optical examination of biological tissue using non-contact irradiation and detection
InactiveUS20060058683A1Avoid detectionCancel noiseDiagnostics using lightSensorsLight beamContact position
An optical system for examination of biological tissue includes a light source, a light detector, optics and electronics. The light source generates a light beam, transmitted to the biological tissue, spaced apart from the source. The light detector is located away (i.e., in a non-contact position) from the examined biological tissue and is constructed to detect light that has migrated in the examined tissue. The electronics controls the light source and the light detector, and a system separates the reflected photons (e.g., directly reflected or scattered from the surface or superficial photons) from the photons that have migrated in the examined tissue. The system prevents detection of the “noise” photons by the light detector or, after detection, eliminates the “noise” photons in the detected optical data used for tissue examination.
Owner:NONINVASIVE TECH
Vital signs probe
InactiveUS20050209516A1Improve performanceAccurate calculationEvaluation of blood vesselsSensorsPulse oximetryCore temperature
A combination of a patient core temperature sensor and the dual-wavelength optical sensors in an ear probe or a body surface probe improves performance and allows for accurate computation of various vital signs from the photo-plethysmographic signal, such as arterial blood oxygenation (pulse oximetry), blood pressure, and others. A core body temperature is measured by two sensors, where the first contact sensor positioned on a resilient ear plug and the second sensor is on the external portion of the probe. The ear plug changes it's geometry after being inserted into an ear canal and compress both the first temperature sensor and the optical assembly against ear canal walls. The second temperature sensor provides a reference signal to a heater that is warmed up close to the body core temperature. The heater is connected to a common heat equalizer for the temperature sensor and the pulse oximeter. Temperature of the heat equalizer enhances the tissue perfusion to improve the optical sensors response. A pilot light is conducted to the ear canal via a contact illuminator, while a light transparent ear plug conducts the reflected lights back to the light detector.
Owner:FRADEN JACOB
Detecting, localizing, and targeting internal sites in vivo using optical contrast agents
InactiveUS6246901B1Rapid imaging and localization and positioning and targetingNanoinformaticsDiagnostics using spectroscopyIn vivoOptical contrast
Owner:J FITNESS LLC
Subcutaneous analyte sensor
Owner:ROCHE DIABETES CARE INC
Computer vision-based wireless pointing system
A system comprising at least one light source in a movable hand-held device, at least one light detector that detects light from said light source, and a control unit that receives data from the at least one light detector. The control unit determines the position of the hand-held device in at least two-dimensions from the data from the at least one light detector and translates the position to control a feature on a display.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
Methods and devices for vascular plethysmography via modulation of source intensity
A time-varying modulating signal is used as a plethysmography signal, rather than a time-varying detected optical power. The time-varying detected optical power is used (e.g., in a feedback loop) to adjust the source intensity. Light is transmitted from a light source, wherein an intensity of the transmitted light is based on a light control signal. A portion of the light transmitted from the light source is received at a light detector, the portion having an associated detected light intensity. A feedback signal is produced based the portion of light received at the light detector, the feedback signal indicative of the detected light intensity. The feedback signal is compared to a reference signal to produce a comparison signal. The light control signal is then adjusted based on the comparison signal, wherein at least one of the comparison signal and the light control signal is representative of volume changes in blood vessels.
Owner:PACESETTER INC
Exercise device, sensor and method of determining body parameters during exercise
A noninvasive light sensor for detecting heart beat signals has a circular support member engageable circumferentially with a body part of a person. Light emitters and light detectors are located around a circumference of the circular support member for respectively emitting light signals into different areas of tissue surrounding the body part, and detecting reflected light signals from the different areas of tissue surrounding the body part.
Owner:WELL BEING DIGITAL LTD
Optical excitation/detection device and method for making same using fluidic self-assembly techniques
InactiveUS20040222357A1Solid-state devicesMaterial analysis by optical meansCMOSPhotovoltaic detectors
The disclosure is directed toward an optical excitation / detection device that includes an arrayed plurality of photodetectors and separately formed photoemitters, as well as a method for making such a device. A CMOS fabricated photodetector array including a plurality of individual photoreceptors is selectively etched back between photoreceptor locations to reveal a plurality of recessed regions having a certain geographic profile. A plurality of semiconductor blocks, each having light emitting capability and each having a certain geometric profile that is complementary in size and shape to the certain geometric profile of the recessed regions, are separately fabricated. These blocks are included within a fluid to form a slurry. The slurry is then flowed over the CMOS fabricated photodetector array in accordance with a fluidic self-assembly technique, and the included semiconductor blocks are individually deposited within each of the plurality of recessed regions in the CMOS fabricated photodetector array. The deposited blocks are then attached within the recessed regions to form the optical excitation / detection device from an arrayed plurality of photodetectors and separately formed photoemitters.
Owner:SANOFI AVENTIS DEUT GMBH
Method and device for pulse rate detection
InactiveUS7018338B2Accurately monitoring and detecting heart rateFully removedCatheterSensorsHuman bodyNoise reduction algorithm
Portable pulse rate detecting device for contact with human body tissue, including a light-emitting source for emitting radiant energy directed at through human body tissue; at least first and second light detectors for detecting intensity of radiant energy after propagation through human body tissue and for providing first and second input signals as a function of such propagation, a detecting device for providing a motion reference signal, and processing means for removing motion-related contributions from the first and second input signals and subtracting a calculated model based on the motion reference signal from each of the first and second input signals, wherein the processing means is also for removing measurement noise and residual non-modeled contributions from the first and second enhanced signals using a noise reduction algorithm.
Owner:MENDEL BIOTECHNOLOGY INC +1
System and method for scanning a surface and computer program implementing the method
ActiveUS20150378023A1Improve spatial resolutionSpace is sacrificedOptical rangefindersElectromagnetic wave reradiationLight beamComputer science
A system and method for scanning a surface and a computer program implementing the method. The method is suitable for performing the functions carried out by the system of the invention. The computer program implements the method of the invention. The systemmeans for illuminating illuminates different sub-areas (Si) of a surface (S) with a light beam (Be) in an alternating manner, andreceives and detects the portions of reflected light (Br) reflected on same, including:one or more light detectors (D); andlight redirection means including a determined spatial distribution model (Qr) of the light redirection elements (GM), which receive the portions of reflected light (Br) and sequentially redirect them towards the light detector or detectors (D).
Owner:UNIV POLITECNICA DE CATALUNYA
Imaging system and method for providing extended depth of focus, range extraction and super resolved imaging
InactiveUS7646549B2Improving geometrical resolutionIncrease depth of focusSemiconductor/solid-state device manufacturingDiffraction gratingsImaging lensField of view
Owner:BRIEN HOLDEN VISION INST (AU)
Optical imaging of induced signals in vivo under ambient light conditions
InactiveUS6748259B1Rapid detection and imaging and localization and targetingHigh sensitivityInterferometric spectrometryNanoinformaticsImaging processingTarget signal
Owner:J FITNESS LLC
Apparatus for measurement of blood analytes
There is described a device for the non-invasive measurement of one or more analytes in blood in a patient's body part which comprises a light transmitter comprising a plurality of transmitting fibres positioned to transmit light to the body part and a light detector comprising a plurality of light detector fibres position to detect light transmitted through or reflected from the body part. The device especially utilises the non-pulsatile element of a patient's blood. There is also described a method of measuring blood glucose levels and a device programmed so as to calculate one or more of the haemoglobin index, the oxygen index and the blood oxygen saturation.
Owner:WHITLAND RES
User interface improvements for medical devices
ActiveUS7945452B2Smooth and quick and efficient maneuveringData processing applicationsLocal control/monitoringGraphicsGraphical user interface
Owner:ICU MEDICAL INC
Touch-sensing display apparatus and electronic device therewith
InactiveUS20130021300A1Reduce thicknessInput/output processes for data processingTotal internal reflectionTouch Senses
A touch-sensing display apparatus comprises a display unit with integrated elements, and a planar light guide located in front of the display unit so as to define a touch surface. At least one light emitter is arranged to emit light into the light guide for propagation by total internal reflection inside the light guide, and at least one light detector is arranged to receive at least part of the light propagating inside the light guide. The integrated elements are designed as image-forming elements and touch-sensor elements, wherein the touch-sensor elements comprise the emitter(s) and / or the detector(s) and are arranged along a periphery region of the display unit. The image-forming elements and the touch-sensor elements may be integrated in one and the same composite substrate within the display unit.
Owner:FLATFROG LAB
Touch-sensing display panel
InactiveUS20130127790A1Reduce thicknessNon-linear opticsInput/output processes for data processingTotal internal reflectionTouch Senses
A touch-sensing display panel, comprising a plurality of image-forming pixel elements; a planar light guide with a first refractive index, having a front surface forming a touch-sensing region and an opposite rear surface facing the pixel elements; a plurality of light emitters arranged at a peripheral region of the panel to emit light into the light guide for propagation therein through total internal reflection; a plurality of light detectors disposed at the peripheral region for receiving light from the light guide; and an optical layer disposed at the rear surface of the light guide to cover a plurality of the image-forming pixel elements in at least a central region of the panel, wherein said optical layer is configured to reflect at least a part of the light from the emitters impinging thereon from within the light guide.
Owner:FLATFROG LAB
Imaging of biological samples using electronic light detector
A system and method using an electronic light detector array, e.g., a CCD or a CMOS-based detector array, is used to acquire a visual image of a biological sample that includes biological material associated with a biological material holding structure (e.g., a DNA spot array on a DNA chip, protein bands in a 2-D gel, etc.). For example, fluorescence from a biological sample may be detected.
Owner:RGT UNIV OF MINNESOTA
Multi-axis joystick and transducer means therefore
InactiveUS20050162389A1Reduce noiseLow costProgramme controlManual control with multiple controlled membersJoystickTransducer
The invention relates to improved multi-axis joysticks and associated multi-axis optical displacement measurement means. The displacement measuring means may include one or more light emitters and one or more light detectors, preferably mounted in a planar hexagonal array. The relative position of an adjacent movable reflector assembly can be measured in six degrees of freedom by variations in detected light amplitude. Various ergonomic configurations of six axis joystick embodiments which may be facilitated by the compact design of the transducer means are disclosed. Means for dynamically adjusting coordinate transformations for construction machinery control are also disclosed.
Owner:OBERMEYER HENRY K +1
Subcutaneous analyte sensor
Assembly and method for measuring the concentration of an analyte in a biological matrix. The assembly includes an implantable optical-sensing element that comprises a body, and a membrane mounted on the body in a manner such that the membrane and the body define a cavity. The membrane is permeable to the analyte, but is impermeable to background species in the biological matrix. A refractive, element is positioned in the cavity. A light source transmits light of a first intensity onto the refractive element, and a light detector receives light of a second intensity that is reflected from the cavity. A controller device optically coupled to the detector compares the first and second light intensities, and relates the intensities to analyte concentration.
Owner:ROCHE DIABETES CARE INC
Photoplethysmography (PPG) device and the method thereof
ActiveUS7336982B2Improve performanceReduce Motion ArtifactsCatheterDiagnostic recording/measuringAcquired characteristicCovariance
A method of measuring Photoplethysmography (PPG) signals may comprise detecting dual wavelength illumination from a light detector so as to provide detected signals, converting the detected signals into digital signals so as to provide digital signals, reducing noises from the digital signals and increasing independency between the digital signals so as to provide preprocessed signals, subtracting the average value from the preprocessed signals so as to provide adjusted signals, obtaining whitening matrix based on covariance, eigen value, and eigen matrix obtained from the adjusted signals, and restoring data using the whitening matrix.
Owner:SILICON MITUS
Fetal oximetry system and sensor
InactiveUS20050283059A1Improve accuracyUsable signal timeSensorsBlood characterising devicesFetal monitoringLength wave
Owner:RIC INVESTMENTS LLC
Structured plane illumination microscopy
An apparatus includes a light source configured for generating a coherent light beam having a wavelength, λ, a light detector, and beam-forming optics configured for receiving the generated light beam and for generating a plurality of substantially parallel Bessel-like beams directed into a sample in a first direction. Each of the Bessel-like beams has a fixed phase relative to the other Bessel-like beams. Imaging optics are configured for receiving light from a position within the sample that is illuminated by the Bessel-like beams and for imaging the received light onto the detector. The imaging optics include a detection objective having an axis oriented in a second direction that is non-parallel to the first direction, where the detector is configured for detecting light received by the imaging optics. A processor configured to generate an image of the sample based on the detected light.
Owner:HOWARD HUGHES MEDICAL INST
Optical touch screen systems using reflected light
InactiveUS20100238138A1Low costCostInput/output processes for data processingOptoelectronicsElectronic component
A touch screen system, including a near-infrared transparent screen including a plurality of reflective elements embedded therein, a circuit board including circuitry for controlled selective activation of electronic components connected thereto, at least one light source connected to the circuit board, for emitting light, and at least one light detector connected to the circuit board, for detecting light emitted by the at least one light source and reflected by the reflective elements.
Owner:NEONODE
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