17results about "Photometry using multiple detectors" patented technology

A tilt and orientation sensing device is provided. [Solution] The tilt and orientation sensing device includes a dome structure including a spherical surface, and a ductile circuit board configured to surround at least a portion of the spherical surface, the ductile circuit board including a plurality of optical sensors configured to measure the amount of sunlight, and is characterized in that when the ductile circuit board is positioned on the spherical surface, the plurality of optical sensors face different directions from each other.

An ambient light sensor comprising at least three main channel sensing units and at least one cooperative channel sensing unit. Each main channel sensing unit includes a filter and a photosensitive element, with the filter positioned on the light receiving path of the photosensitive element, wherein the filter of at least one main channel sensing unit is an absorptive filter. Each cooperative channel sensing unit includes a filter and a photosensitive element, with the filter positioned on the light receiving path of the photosensitive element, wherein the filter of at least one cooperative channel sensing unit is an interference filter. This configuration effectively controls the error range of spectral reproduction results in ambient light sensor products affected by process variations, thereby improving product yield.

A photodetector for receiving a beam spot. The photodetector has a plurality of independent inner quadrant sections, each having a first anode, and a plurality of independent radial wedge sections each having a second anode. A separate first lead connects the first anode of each of the inner quadrant sections to a corresponding first anode bond pad. A separate second lead connects the second anode of each of the radial wedge sections to a corresponding second anode bond pad. The photodetector also has a single shared and common cathode located on the side of the photodetector opposite the first and second anodes. In some embodiments, the photodetector may include an individual third anode associated with each radial wedge section. Further provided is an optical detector system including the photodetector.

The invention relates to a wavelength detection system that enables the detection of wavelength from light / laser sources using at least two different characteristic photodiodes.

The various embodiments described herein include methods, devices, and systems for detecting photons. In one aspect, a superconducting circuit includes an optical waveguide and a plurality of superconducting photon detectors optically coupled to the optical waveguide. The superconducting circuit further includes a readout circuit thermally coupled to the plurality of superconducting photon detectors, the readout circuit comprising respective readout components for the plurality of superconducting photon detectors, each respective readout component having a corresponding reset component.

Embodiments of the present application disclose a light intensity difference sensing device, a wearable device and a display screen brightness adjusting method. The light intensity difference sensing device comprises a support structure, an ASIC chip and first and second sensing members. The support structure is provided with a light passage. The ASIC chip is arranged on the support structure. The first and second sensing members are respectively arranged on opposite sides of the ASIC chip, and the second sensing member is located in the light passage. The first sensing member is used for receiving ambient light of an environment in which the light intensity difference sensing device is located and generating a first photoelectric signal to obtain an external light intensity measurement value. The second sensing member is used for receiving imaging light emitted by a display screen and generating a second photoelectric signal to obtain an internal light intensity measurement value. The ASIC chip is used for obtaining a light intensity difference value according to a difference between the external light intensity measurement value and the internal light intensity measurement value.

Optical Pulse Detection Device and Method The present invention relates to an optical pulse detection device (10), the detection device (10) comprising: a single detector (12) comprising N independent detection surfaces (20) of the same dimensions, N being an integer greater than or equal to two, the N detection surfaces (20) being suitable for receiving an optical pulse of identical power surface density on all the detection surfaces (20), M signal processing chain(s) (14) for the output signals of the N detection surfaces (20), M being an integer between 1 and N, each processing chain (14) comprising an amplification unit (22) having an amplification gain and a filtering unit (24),each processing chain (14) being connected to one or more detection surfaces (20) distinct from any other possible processing chains (14) such that each detection surface (20) is connected to one or more of the M processing chains (14). Figure for the abbreviation: 2,

Methods of sensor readout and calibration and circuits for performing the methods are disclosed. In some embodiments, the methods include driving an active sensor at a voltage. In some embodiments, the methods include use of a calibration sensor, and the circuits include the calibration sensor. In some embodiments, the methods include use of a calibration current source and circuits include the calibration current source. In some embodiments, a sensor circuit includes a Sigma-Delta ADC. In some embodiments, a column of sensors is readout using first and second readout circuits during a same row time.

Disclosed is an optical detector device comprising a housing with a projecting neck that is closed towards the outside by a light-permeable disk, underneath which at least one optical waveguide is arranged that tapers in the direction of an optical sensor, further comprising an optical waveguide assembly (18) having a plurality of optical waveguides which are retained in the neck (8) by a holding mechanism (25).

A sensor apparatus for mounting on a motor vehicle window for determining the position of the sun includes at least one lens body and at least one detector with photosensitive regions, wherein the lens body has a radiation entry side and a radiation exit side which faces the detector. The sensor apparatus is wherein an opaque structure is arranged inside the lens body, at least four lens sections of the lens body are defined by the opaque structure, a photosensitive region of the detector is assigned to each lens section, and each lens section has at least one convex lens contour on the radiation exit side of the lens body.

The application discloses a kind of balanced detector of chip integration, including optical input module, optical processing chip, photoelectric conversion module and external circuit module.Wherein, two input optical fibers respectively input local oscillator light and signal light;The optical processing chip includes optical input port, 1: n (n≥1) 2×2 coupler and optical output port, optical input port is transmitted to 2×2 coupler with local oscillator light and signal light, 1: n end input light, wherein, 1 end input local oscillator light, n end input signal light, after being coupled, a group of differential optical signals with substantially consistent optical intensity and 180° phase difference are obtained, and are output to photoelectric conversion module through two optical output ports;Photoelectric conversion module realizes the electrical connection between optical detector chip and external circuit processing module.The application uses chipized optical coupler to realize the coherent mixing of local oscillator light and signal light, and gets rid of the use of optical fiber beam splitter, reduces the integration difficulty of coherent detection system.

A wearable module for use in an optical measurement system includes a housing and a plurality of light-receiving members. The housing includes a target-side surface configured to face a surface of a body of a user when the wearable module is worn by the user. The plurality of light-receiving members protrude from the target-side surface of the housing and are configured to receive photons scattered by a target within the body of the user and guide the received photons toward a photodetector. An extent to which each of the plurality of light-receiving members protrudes from the target-side surface is adjustable such that, when the wearable module is worn by the user, each of the plurality of light-receiving members is in physical contact with the surface of the body.

The various embodiments described herein include methods, devices, and systems for detecting photons. In one aspect, a superconducting circuit includes an optical waveguide and a plurality of superconducting photon detectors optically coupled to the optical waveguide. The superconducting circuit further includes a readout circuit thermally coupled to the plurality of superconducting photon detectors, the readout circuit comprising respective readout components for the plurality of superconducting photon detectors, each respective readout component having a corresponding reset component.

The invention relates to Device for quantum generation of random numbers comprising a light source (100) with fixed polarization and a polarization splitting element (110) optically connected thereto, having a first output (111) corresponding to vertical polarization and a second output (112) corresponding to horizontal polarization, and a first detector (131) optically connected to the first output (111) of the polarization splitting element (110) and a second detector (132) optically connected to the second output (112) of the polarization splitting element (110), a generating module (140) having a first input (141) connected to the output of the first detector (131) and a second input (142) connected to the output of the second detector (132), and a two-state output (143), the generating module (140) configured to generate on the two-state output (143) bits having a value of 1 upon receiving a signal on the first input (141) and bits having a value of 0 upon receiving a signal on the second input (142), characterized in that the light source (100) is connected to the polarization splitting element (110) via a multi-state polarization modulator (150) controlled by a digital or analog signal generated by a control electronics (160) connected to the multi-state polarization modulator (150). The invention comprises also a method for verification of privacy of random bit sequences generated by means of such a device.

To provide a non-interferometric, non-iterative complex amplitude reading method and apparatus that can detect complex amplitude information, including amplitude and phase, from a single diffraction image based on intensity images.SOLUTION: The non-interferometric, non-iterative complex amplitude reading method includes: diffracting a light beam including amplitude information and phase information to obtain a diffraction pattern of an intensity distribution; and constructing a diffraction intensity-complex amplitude model and training it based on a correlation among the diffraction pattern and the amplitude information and the phase information, and applying the trained model directly to new diffraction images to obtain amplitude information and phase information. The method can achieve detection of complex amplitude information, including amplitude and phase, from a single diffraction image, improve stability and accuracy of phase reading results, increase calculation speed, and simplify an optical system, and the method is suitable for applications in holographic storage, biomedical image processing, and microscopic imaging.SELECTED DRAWING: Figure 11