Class / Patent application number | Description | Number of patent applications / Date published |
356222000 | Plural detectors | 19 |
20080218748 | MEASURING APPARATUS COMPRISING A PELTIER-SEEBECK DETECTOR - A measuring apparatus comprises a detector device for detecting a variable to be measured, and a controller operative to control the detector device and generate an output signal indicative of the magnitude of the variable being measured. The detector device comprises a housing on which are mounted two Peltier-Seebeck detectors, the detectors being arranged on the housing such that only the first Peltier-Seebeck detector is exposed, in use, to the variable to be measured. The controller is operative to generate the output signal based on the output of the first Peltier-Seebeck detector and the output of the second Peltier-Seebeck detector so as to account for the effect of the ambient heat on each Peltier-Seebeck detector. | 09-11-2008 |
20090002692 | Method of Measuring the Laser Power of a Forward Multiple Laser Beam in a Multibeam Optical Scanning System - A method for measuring the laser power of a forward multiple beam generated by a laser diode array comprising at least two laser diodes, the method comprising a generation step, comprising generating the forward multiple beam; a separation step, comprising separating at least part of the forward multiple beam into individual beams ( | 01-01-2009 |
20090262338 | TESTING SYSTEM AND TESTING METHOD FOR KEYBOARD LIGHT OF MOBILE PHONE - A testing system includes a computer ( | 10-22-2009 |
20100026995 | MULTI-STREAM SENSOR FOR NONINVASIVE MEASUREMENT OF BLOOD CONSTITUENTS - The present disclosure relates to a sensor having a set of photodetectors that are arranged at various locations to enable the measurement of blood glucose. The photodetectors are arranged across multiple locations. For example, the detector may comprise multiple photodetector arrays that are arranged to have a sufficient difference in mean path length to allow for noise cancellation and noise reduction. Walls may be used in the detector to separate individual photodetectors and prevent mixing of detected optical radiation between the different locations on the measurement site. A window may also be employed to facilitate the passing of optical radiation at various wavelengths for measuring glucose in the tissue. | 02-04-2010 |
20100238432 | Photo-detector filter - Method and systems related to obstructing a first predefined portion of at least one defined wavelength of light incident upon a first photo-detector array; and detecting the at least one defined wavelength of light with a photo-detector in a second photo-detector array. | 09-23-2010 |
20100245809 | DEEP SUBMICRON AND NANO CMOS SINGLE PHOTON PHOTODETECTOR PIXEL WITH EVENT BASED CIRCUITS FOR READOUT DATA-RATE REDUCTION COMMUNICATION SYSTEM - An avalanche photodiode and a sensor array comprising an array of said avalanche photodiodes is disclosed. Then avalanche photodiode comprises a substrate of a first conductivity type; a first well of a second conductivity type formed within the substrate; a second well of the second conductivity type formed substantially overlying and extending into the first well; a heavily doped region of the first conductivity type formed substantially overlying and extending into the first well, the junction between the heavily doped region and the second well forming an avalanche multiplication region; a guard ring formed from a first conductivity material positioned substantially about the periphery of the multiplication region at least partially underlying the heavily doped region; and an outer well ring of the second conductivity type formed about the perimeter of the deep well and the guard ring. The sensor array comprises a plurality of pixel elements, each of the pixel elements being configured to operate on discrete value continuous time (DVCT) basis. Each of the pixel elements can include the avalanche photodiode previously described. | 09-30-2010 |
20100302532 | PHOTODETECTOR HAVING DARK CURRENT CORRECTION - A method for determining the light intensity of a light signal in each of a plurality of spectral bands is disclosed and a method for fabricating a photodetector is also disclosed. | 12-02-2010 |
20100302533 | Local Dosimeter for Measuring the Ambient Equivalent Dose of Photon Radiation, and Reading Method - The invention consists of an area dosimeter for measuring the ambient equivalent dose (H*(10)) of photon radiation with a diffuser, a detector card with at least one pair of detection elements, preferably LiF-chips,
| 12-02-2010 |
20110149274 | Intensity Estimation Using Binary Sensor Array With Spatially Varying Thresholds - An apparatus includes an array containing N sub-diffraction limit light sensors each having an associated light absorption activation threshold for switching from a reset state to an activated state, where the light absorption activation values lie within a range of values. The apparatus further includes a processor connected with a memory including computer program code, where the memory and computer program code are configured to, with the processor, cause the apparatus at least to perform estimating an intensity of light that illuminates the array based on electrical outputs of the array. | 06-23-2011 |
20110273704 | Direct, Diffuse, and Total Radiation Sensor - A solar radiation detector comprises a shading element that casts a shadow over one of a number of sensors disposed about the shading element. The shading element and the sensors are spaced in relation to each other that the shadow cast by the shading element always falls on one of the sensors, completely shading that one sensor, while at the same time leaves at least another one of the sensor completely exposed to direct solar radiation. The completely shaded sensor measures substantially only diffuse solar radiation. | 11-10-2011 |
20110273705 | CHLOROPHYLL AND TURBIDITY SENSOR SYSTEM - A low cost sensing system that can measure both chlorophyll concentration and turbidity is provided. The system is an optical system that utilizes at least three light sensors for measuring side-scattered and forward scattered light, as well as fluorescence. The system is able to take optical density measurements, steady state fluorescence measurements and maximum fluorescence measurements, and can be configured for wireless control and data transmission. The system may also be housed in one or more fluidtight housings so as to make it submersible. | 11-10-2011 |
20120081700 | OPTICAL MEASUREMENT SYSTEM - An optical measurement system includes a holder, a bracket, a plurality of optical sensors, a motor and a processing unit. The holder is provided for holding a test light source at the origin of a spherical coordinate system. The optical sensors are located on the bracket at different elevation angles with respect to the origin. Moreover, the optical sensors are spaced the same radial distance apart from the origin to aim at the test light source. The motor is configured to drive either the holder or the bracket to rotate such that the test light source at the origin is able to relatively rotate with respect to the optical sensors about a zenith axis of the spherical coordinate system. The processing unit is coupled to the optical sensors for processing of data captured from the optical sensors. | 04-05-2012 |
20120147362 | Transferring Optical Energy - For transferring optical energy, a first multimode wave guide transmits radiant energy with a homogenized beam to a first plurality of optical sensors of an array of optical sensors. The array measures the homogenized radiant energy. Each optical sensor of the first plurality of optical sensors measures a pixelized portion of the homogenized radiant energy. A method and system also perform the functions of the apparatus. | 06-14-2012 |
20120229800 | PULSE OXIMETER TEST INSTRUMENTS AND METHODS - Generally described, one or more embodiments of the present disclosure are directed to pulse oximeter test instruments and methods for testing pulse oximeters. The pulse oximeter test instruments may be configured to sense light at different wavelengths simultaneously. In some embodiments, light pulses having a wavelength above a particular threshold may be detected and used to test measurements made by a pulse oximeter. In that regard, the pulse oximeter test instruments disclosed herein are able to provide improved accuracy and more reliable test results over prior art pulse oximeter test instruments. | 09-13-2012 |
20130301039 | LUMINOUS INTENSITY TEST DEVICE - A luminous intensity test device includes an optical frequency converter, a display, and a processor. The optical frequency converter selectively converts at least a portion of light emitted by a light source into a digital signal. The display displays a color selection interface. The processor processes the digital signal and obtains the luminous intensity. When a tester inputs a color parameter into the color selection interface via an input device, the optical frequency converter converts a kind of light to the digital signal and then the processor processes the digital signal to obtain a luminous intensity and display the luminous intensity on the display. | 11-14-2013 |
20140293276 | DISTRIBUTING LIGHT INTENSITY READINGS IN A WIRELESS MESH - A method for controlling a light source associated with an environment includes: receiving, over a wireless mesh network and by a control node corresponding to the light source, a first light intensity value for the environment from a first sensor node; calculating, by the control node, a resulting light intensity (RLI) value based on the first intensity value; determining, by the control node, that the RLI value exceeds a light intensity threshold; and modifying, by the control node and in response to determining the RLI value exceeds the light intensity threshold, an output of the first light source. | 10-02-2014 |
20150036126 | SEMICONDUCTOR INTEGRATED CIRCUIT FOR OPTICAL SENSOR - There is provided a semiconductor integrated circuit for an optical sensor for receiving environmental light through a cover member that attenuates visible light and transmits infrared light and a collecting lens, performing luminosity factor correction based on an amount of received light, and detecting an illuminance, wherein the semiconductor integrated circuit includes a first light receiving element having a first spectral property; a second light receiving element having a second spectral property; and a luminosity factor correction unit configured to perform the luminosity factor correction according to output of the first light receiving element and output of the second light receiving element, wherein the luminosity factor correction unit includes an AD conversion unit performed by time division on the output of the first light receiving element and the output of the second light receiving element, and a calculating unit subtracting digital signals obtained by the conversion. | 02-05-2015 |
20150146197 | Mobile Apparatus for Checking Airport Marker Lights - A mobile apparatus is provided for measuring photometric characteristics of airport marker lights. The mobile apparatus includes a measuring rod configured to be moved above the marker lights to be checked, in light beams emitted by these marker lights, and a device for measuring the distance between the measuring rod and the marker lights to be checked. The measuring rod carries at least one photometric sensor and includes a device for acquiring and processing the signals emitted by the photometric sensor or sensors during its movement, as a function of the distance measured between the measuring rod and the marker lights to be checked. The device for acquisition and processing is configured to generate a set of data representing photometric characteristics of each marker light checked. | 05-28-2015 |
20160123803 | VECTOR LIGHT SENSOR AND ARRAY THEREOF - A vector light sensor (VLS) includes a substrate and a sensor structure. The substrate includes a major surface. The sensor structure includes a pyramid structure, light-sensitive areas, and electrical contacts. The pyramid structure forms at least a portion of a body of the sensor structure and has predefined angles between the major surface of the substrate and a plurality of sidewalls of the pyramid. The light-sensitive areas are formed on two or more of the plurality of sidewalls of the pyramid structure. The electrical contacts are electrically coupled to the light-sensitive areas. Information about the intensity and direction of an incident light beam can be extracted by comparing signals from two or more of the light-sensitive areas. One or two dimensional arrays of VLS may be fabricated and used, for example, as an image sensor. | 05-05-2016 |