4541 results about "First light" patented technology

The invention provides an optical system, a control method, a vehicle optical signal device, a vehicle lamp and a vehicle, the optical system comprises at least one first light source assembly and a second light source assembly, and light emitted by the first light source assembly passes through an optical assembly and is emitted from a first light emitting area of a light emitting surface of the optical assembly; light emitted by the second light source assembly passes through the optical assembly and is emitted from a second light-emitting area of the light-emitting surface of the optical assembly, and at least partial area overlapping exists between the first light-emitting area and the second light-emitting area; wherein light emitted by the first light emitting area serves as a first light function, light emitted by the second light emitting area serves as a second light function, the first light function serves as a marker lamp of the driving automation system, and the second light function serves as other light functions with colors different from those of the first light function. Therefore, the structure and function multiplexing of the automatic system marker lamp and other signal lamps is realized, the cost of independently designing and manufacturing the automatic system marker lamp is effectively reduced, and the occupied space of the whole vehicle lamp is effectively reduced.

The invention belongs to the technical field of photo-thermal performance detection of building envelope structures, and particularly relates to a light-transmitting roof photo-thermal performance detection device under various meteorological conditions and a detection method of the light-transmitting roof photo-thermal performance detection device. The invention discloses a light-transmitting roof photo-thermal performance detection device under various meteorological conditions. The device comprises a heat metering device, an air supply and return system, a water supply and return system, a control system and an external environment simulation device, wherein the external environment simulation device comprises an external environment box and an artificial light source; the light-transmitting roof test piece is installed on the lower side wall of the external environment box, and the external environment simulation device and the spraying device are used for simulating the environment conditions of different steady-state meteorological conditions and dynamic meteorological conditions under the spraying condition; the spraying device comprises a nozzle; a first light source radiation intensity sensor, a second light source radiation intensity sensor and a first illuminance sensor are further arranged in the outer environment box. According to the invention, the photo-thermal performance of the light-transmitting roof under the spraying condition can be accurately evaluated.

The invention provides a light spot position detection method, an automatic focusing method, a related system and a storage medium. A first light source is controlled to emit a first light beam to irradiate a to-be-detected sample, and a focusing sensor is controlled to receive the first light beam reflected from the to-be-detected sample; acquiring pixel data generated when the focusing sensor senses a light spot, formed on the focusing sensor, of the first light beam, and determining the center pixel position of the light spot based on the pixel data so as to determine the position of the light spot. According to the invention, the position of the light spot can be determined, so that the automatic focusing system can perform automatic focusing based on the position of the light spot, and the image definition is improved. Besides, in the invention, the light spot position is determined by using the central pixel position in the pixel data sensed by the focusing sensor, and the central pixel position can represent the central position of the light spot, so that the light spot position determination accuracy can be relatively high by determining the light spot position based on the central pixel position; therefore, the accuracy of automatic focusing and the image definition are improved.

The optical module provided by the invention comprises a circuit board, a base, a first light emitting component, a second light emitting component, a first light receiving component and a second light receiving component. The surface of the circuit board is provided with a first notch part and a second notch part, and the base is embedded in the first notch part and the second notch part, so that the base is fixed on the circuit board. The first light emitting component and the second light emitting component are located on the top surface of the base. The first light emitting component and the second light emitting component are respectively located in different gap portions, so that the first light emitting component and the second light emitting component can utilize a circuit board routing space between the first gap portion and the second gap portion to increase the wiring area. The top surface of the base is used for bearing the first light emitting component and the second light emitting component, and the bottom surface of the base is used for bearing a first refraction piece in the first light receiving component and bearing two second refraction pieces at the terminal of the second light receiving component. The top surface and the bottom surface of the base are fully utilized, three-dimensional deployment and integrated deployment are achieved, wiring is better facilitated, and the occupied space of a circuit board is better reduced.

The invention provides a metasurface structure design method and a metasurface structure, and the method can comprise the steps: initializing a rotation angle of the metasurface structure; a first light field construction step: constructing a transmission light relation of the current metasurface structure based on the rotation angle; a second light field construction step: constructing a diffracted light relationship of the current metasurface structure based on the transmitted light relationship so as to determine the light intensity distribution of the image plane; an error construction step: calculating an iteration constraint value according to the image plane light intensity distribution and the target light intensity; wherein the target light intensity is a preposed parameter, the target light intensity is the light intensity corresponding to the target metasurface structure, and the target metasurface structure is a design target; if it is judged that the iteration constraint value is larger than the set value, the rotation angle is updated, the updated rotation angle is obtained, the first light field construction step, the second light field construction step and the error construction step are repeatedly executed till the iteration constraint value is not larger than the set value, and the target metasurface structure is determined based on the current rotation angle.

An apparatus includes a first light source for illuminating a chart including an index surface on which an index is provided, an objective lens for guiding index light emitted from the chart to an optical system, a first element for receiving the index light reflected on an optical surface in the optical system, an interferometer configured to include a second light source and a second element, and acquire a wavefront of measurement light, the measurement light being test light reflected on the target surface, and a reduction unit for reducing an intensity of a signal of light reflected on an optical surface other than the target surface, of the test light reflected on the plurality of optical surfaces and received by the second element.

An optical device includes: a first optical system; and a second optical system. The first optical system includes a first light splitting device configured to split measurement light emitted from a first light source into a first measurement light and a second measurement light and then mix the split measurement light, a first mirror configured to add a first modulation signal by being moved in an entering direction of the first measurement light and reflecting the first measurement light, a second mirror configured to reflect the second measurement light, and a first light receiving device configured to receive the measurement light including a sample-derived signal and the first modulation signal and output a first light receiving signal. The second optical system includes a second light source configured to emit laser light, an optical modulator configured to add a second modulation signal to the laser light, and a second light receiving device configured to receive the laser light including a displacement signal generated by reflection on the first mirror and the second modulation signal and output a second light receiving signal.

The invention discloses an optical waveguide and a preparation method thereof, relates to the technical field of optics, and is used for solving the problems of high processing difficulty, low yield and high cost of the existing array optical waveguide. The optical waveguide comprises a turning waveguide which is provided with a light incident surface, a first surface, a second surface and a plurality of first light splitting surfaces, the first surface and the second surface are arranged in parallel, the first light splitting surfaces are arranged in parallel, the included angle between the first light splitting surfaces and the first surface is smaller than 90 degrees, and the first light splitting surfaces enable light entering the turning waveguide from the light incident surface to be partially reflected; the reflected light is transmitted to the coupling-out waveguide; the coupling-out waveguide and the turning waveguide are spliced, so that light entering the coupling-out waveguide from the turning waveguide is emitted out of the coupling-out waveguide. The first beam splitting surface of the turning waveguide is not perpendicular to the first surface of the turning waveguide, compared with an existing array optical waveguide, the situation that the perpendicularity precision of the beam splitting surface and the surface of the optical waveguide needs to be strictly controlled in the machining process can be avoided, and therefore the machining difficulty can be lowered, the yield can be improved, and cost can be reduced.

A light emitting apparatus of the present disclosure includes: a first light emitting unit including: a first crystalline layer provided on a light extraction surface side; a second crystalline layer; and a light emitting layer disposed between the first crystalline layer and the second crystalline layer, at least a portion of a light extraction surface of the first crystalline layer being an optical functional surface, the optical functional surface having a light collecting effect; and an optical unit including at least one optical member having a light collecting effect, the optical unit being opposed to the light extraction surface side of the first light emitting unit.

A projector includes a first light source, a light modulator that modulates visible light output from the first light source to form a projection image, a first relay optical system that forms the projection image at a first position, an enlarging optical system, an invisible image generator that forms an invisible image made of invisible light, and a light combiner that is disposed in the optical path between the enlarging optical system and the light modulator and combines the visible light and the invisible light with each other into combined light. The invisible image is formed at a second position conjugate with the position where the projection image is formed. The enlarging optical system forms an image at the first position and projects the combined light to display the projection image and the invisible image on a single projection surface.

The invention discloses a distributed optical fiber sensing positioning system and positioning method based on asymmetric double Mach-Zehnder. The distributed optical fiber sensing positioning system comprises an asymmetric double Mach-Zehnder distributed optical fiber sensing module and a disturbance positioning module. The optical fiber sensing module comprises a first light source, a second light source, an asymmetric double Mach-Zehnder interferometer, a data acquisition card and an industrial personal computer; two beams of light emitted by the first light source and the second light source are respectively propagated clockwise and anticlockwise in a sensing loop, and interfere in couplers at opposite ends in the interferometer to form two paths of interference signals, and the data acquisition card acquires the two paths of interference signals, converts the two paths of interference signals into electric signals, and sends the electric signals to the industrial personal computer for signal processing; the disturbance positioning module is used for obtaining a positioning result, a double-endpoint detection method based on median filtering is adopted in the aspect of endpoint detection, iterative variational mode decomposition is used in the aspect of time-frequency change feature extraction, and envelope extraction and generalized secondary cross-correlation time delay estimation algorithms are used in the aspect of time delay estimation positioning.

The invention discloses a method for detecting residual stress of a birefringent crystal, which is characterized by comprising the following steps of: fixing a sample to be detected on a sample loading table; the imaging lens is used for acquiring light rays which sequentially penetrate through the polarizer module, a sample to be detected on the sample loading table, the analyzer module and the camera module in four states in three states that polarization axes of the polarizer module and the analyzer module are mutually orthogonal and a polarization angle is gradually increased by 30 degrees, and in a state that the polarizer module and the analyzer module are in parallel, and the imaging lens is used for acquiring the light rays which sequentially penetrate through the polarizer module, the sample to be detected on the sample loading table, the analyzer module and the camera module in the four states; collecting a light intensity matrix set through a camera module; acquiring a reference light intensity matrix through normalized linear superposition, and performing pixel-by-pixel operation with the reference light intensity matrix on the basis of the first light intensity matrix, the second light intensity matrix and the third light intensity matrix to acquire corresponding phase delay matrixes; eliminating natural birefringence and updating a phase delay matrix by deducting respective overall average phase delay amount pixel by pixel; through pixel-by-pixel weighted stacking, isogradient lines are eliminated, and distribution information of residual stress is obtained.

A spectroscopic apparatus including an analysis optical system, a length measuring optical system, and a calculation apparatus and performing spectroscopic analysis of a sample, the analysis optical system including a moving mirror having a first reflection surface and a second reflection surface, the moving mirror configured to be translated, a gas cell configured to encapsulate a gas and add a light absorption signal to the analysis light, and a first light receiver configured to receive the analysis light containing a sample derived signal, a first modulation signal, and the light absorption signal, the length measuring optical system including a length measuring optical system configured to acquire a displacement signal corresponding to the position of the moving mirror from laser light reflected off the second reflection surface, the calculation apparatus including a moving mirror position calculator, a light intensity calculator, a Fourier transformer, and a moving mirror position correction section.

The embodiment of the invention provides a detection module and wearable equipment. The detection module comprises a cover plate, a coherent light source and an image sensor, the cover plate is used for being arranged on the side wall of a shell of the wearable equipment, the cover plate is provided with an outer surface and an inner surface opposite to the outer surface, and the outer surface is exposed out of the side wall; the cover plate is provided with a first light-transmitting area and a second light-transmitting area; the coherent light source is arranged on one side of the inner surface of the cover plate and used for emitting coherent light penetrating through the first light-transmitting area. The image sensor is arranged on one side of the inner surface of the cover plate, and the image sensor is used for imaging the light penetrating through the second light-transmitting area. According to the embodiment of the invention, more functions can be integrated in a small-size product, namely the wearable equipment.

The invention discloses a height measurement method, a marking method and system, a storage medium and a program product, and relates to the technical field of laser marking, and the method comprises the steps: transmitting first laser through a laser, and projecting a preset first number of first light spots to the surface of a measured object; shooting the first light spot through a monocular camera to obtain a first pixel coordinate of the center of the first light spot in a camera coordinate system; a preset second number of standard scale points on a target laser light path and the height of each standard scale point are determined, the standard scale points are projected to the camera coordinate system, second pixel coordinates of the standard scale points in the camera coordinate system are obtained, and the target laser light path is the light path of the first laser; and calculating the distance between the first pixel coordinate and the second pixel coordinate, determining a target standard scale point with the minimum distance, and taking the height of the target standard scale point as the height of the measured object. According to the invention, the height measurement cost is reduced.

The multi-view imaging detection light source comprises a shell, a plurality of first reflectors, a plurality of second reflectors and a first light source assembly, the shell is provided with a light path channel, an input end and an output end, and the input end and the output end are communicated with the two ends of the light path channel; the first reflectors are arranged at intervals along the inner peripheral wall of the light path channel, the first reflectors are arranged close to the input end, and the mirror surfaces of the first reflectors are obliquely arranged in the extending direction of the light path channel towards the inner peripheral wall deviating from the light path channel; the second reflectors are arranged at intervals along the inner peripheral wall of the light path channel, the second reflectors are arranged close to the output end, and the mirror surfaces of the second reflectors are obliquely arranged close to the inner peripheral wall of the light path channel in the extending direction of the light path channel; a detected object used for detection is located at the output end, and an image of the detected object can be reflected into the input end through the second reflectors and the first reflectors in sequence; in this way, the detection camera located at the input end can shoot images of the detected object at multiple visual angles in one-time image taking, and the image taking efficiency is improved.

The utility model discloses a shooting device for fiber component analysis. The shooting device comprises a supporting base, an X-axis and Y-axis moving table, a Z-axis driving assembly, a carrying plate connected to the X-axis and Y-axis moving table and a microscopic imaging assembly connected to the Z-axis driving assembly and located above the carrying plate. A slide is arranged on the loading plate, and a first light source capable of irradiating to the slide is arranged in the microscopic imaging assembly. Wherein a first groove is formed in the upper surface of the carrying plate, a through light guide hole is formed in the first groove, and the slide covers the first groove; the lower surface of the carrying plate is connected with the XY-axis moving table through a connecting block, a second groove is formed in the position, corresponding to the light guide hole, of the connecting block, and a second light source is arranged in the second groove; a double-sided mirror is assembled at the bottom of the first groove and covers the light guide hole. According to the shooting device, the definition of the fiber sample image can be improved, the stereoscopic impression of the fiber sample image is also improved, and the loss of detail structures in the fiber sample image is also reduced.

The utility model provides a laser radar optical machine and a laser radar. The laser radar ray machine comprises a transmitter, a transmitting optical module, a transmitting lens cone, a receiver, a receiving optical module and a receiving lens cone, and the transmitter is configured to emit a detection light beam; the transmitting optical module is arranged in the transmitting lens cone and is located on a light path of the detection light beam emitted by the transmitter; the receiver is configured to receive echoes formed by reflecting the detection light beams by an object; the receiving optical module is arranged in the receiving lens cone and is positioned on the light path of the echo; a first light leakage hole is formed in the barrel wall of the transmitting lens barrel, and / or a second light leakage hole is formed in the barrel wall of the receiving lens barrel. The first light leakage hole is formed in the barrel wall of the transmitting lens barrel, and / or the second light leakage hole is formed in the barrel wall of the receiving lens barrel, so that stray light can be emitted from the first light leakage hole / the second light leakage hole, and interference of the stray light to the laser radar is reduced.

The invention provides a gas leakage detection method and device, equipment, a storage medium and a program product. The method comprises the following steps: obtaining first light intensity attenuation data of a target area, and carrying out inversion reconstruction processing on the first light intensity attenuation data to obtain a laser concentration field; acquiring traffic data in a low peak period in the target area, and determining traffic abnormal data in the traffic data through an anomaly detection model; obtaining discrete pressure sensor data in the target area, and determining pressure topology low point data based on the discrete pressure sensor data; and then fusion processing is performed on the laser concentration field, the flow abnormal data and the pressure topology low point data to obtain a leakage confidence coefficient, an alarm notification and a leakage point position are output when the leakage confidence coefficient exceeds a preset threshold value, and the method is used for achieving the effects of reducing a gas detection blind area and improving the accuracy of a gas leakage detection result.

The invention discloses a material quality detection system, method, medium and equipment, the material quality detection system comprises a feeding module, a conveying module, a spectrum detection module, a visual detection module, a sorting module and an information management module, the spectrum detection module is arranged at the downstream of the conveying module; comprising a camera obscura, a visible near-infrared spectrometer, a plurality of optical fiber probes, a plurality of first light sources, a plurality of second light sources, a laser distance measuring sensor and an adjustable rack, and the adjustable rack is arranged on the inner wall of the camera obscura and located above a conveying module. The information management module controls the adjustable rack to move so as to drive the multiple optical fiber probes, the multiple first light sources and the laser distance measuring sensor on the adjustable rack to move, and the multiple second light sources are arranged in the camera obscura and located below the conveying module. By arranging the spectrum detection module with the adjustable rack, optical signals of materials can be received from multiple angles, and multi-mode detection such as diffuse reflection, slow transmission and transmission is achieved.

The invention discloses a wafer overturning detection device. The wafer overturning detection device comprises a grabbing mechanism, an overturning mechanism and a detection mechanism. The grabbing mechanism comprises two mechanical arms. The turnover mechanism comprises a turnover platform and a turnover motor. The overturning platform is fixedly connected to an output shaft of the overturning motor, and the output shaft of the overturning motor extends in the first direction. The detection mechanism comprises a camera, a bearing assembly, a first light source assembly, a second light source assembly and a moving assembly; the detection mechanism is located on one side of the turnover mechanism in the second direction. The bearing assembly comprises a mounting plate and a plurality of bearing blocks; a through hole is formed in the mounting plate, and the multiple bearing blocks are arranged in the circumferential direction of the through hole at intervals; when the bearing block is located at the extending position, the minimum distance from the bearing block to the center of the through hole is smaller than the radius of the wafer to be detected; when one bearing block is located at the retraction position, at least three bearing blocks are located at the extension position; the moving assembly is connected with the mounting plate. According to the wafer overturning detection device, non-shielding detection can be realized, the detection efficiency can be improved, and over-high cost can be avoided.

The invention provides a display screen and electronic equipment, the display screen comprises a cover plate, a light source assembly and at least one light processing structure, the cover plate is provided with a first side and a second side which are opposite to each other, the cover plate can transmit light, and an anti-dazzle structure is formed on the second side; the light source assembly is arranged on the first side of the cover plate and used for emitting first light to the direction of the cover plate. The light processing structure is arranged between the light source assembly and the anti-dazzle structure and used for changing the propagation direction of part of the first light. According to the display screen, the light intensity of the first light used for displaying the picture is reduced by arranging the light processing structure, so that the intensity of the formed flash point is reduced, the flash point can be visually shown to be not obvious, optimization of the flash point is achieved, eye fatigue is reduced, and user experience is improved.

The invention discloses a double-path laser interferometer, a grating measurement method and an optical detection system, and relates to the technical field of optical detection.The double-path laser interferometer comprises a laser light source for providing a laser beam, the light splitting module is used for splitting the laser beam into a first light beam and a second light beam, and the first light path module is used for enabling the first light beam to enter a measured grating and receiving first diffraction light emitted by the measured grating to form a first interferogram; the second light path module is used for enabling the second light beam to enter the measured grating and receiving second diffraction light emitted by the measured grating to form a second interferogram; the imaging acquisition modules are arranged on the light emitting sides of the first light path module and the second light path module respectively, and the imaging acquisition modules are set to determine the measurement result of the measured grating according to the first interference pattern and the second interference pattern, so that the measurement efficiency of the uniformity of the grating is improved on the premise that the measurement precision is not sacrificed.

The invention provides a volume holographic grating exposure parameter determination method and a two-dimensional pupil expansion volume holographic optical waveguide, and the method comprises the steps: carrying out the multiple rotation of a vector of a first light beam, a vector of a second light beam and a holographic photosensitive material when the wavelengths of the first light beam and the second light beam are first recording wavelengths, the rotated vectors of the first light beam and the second light beam and the rotated material position of the holographic photosensitive material are obtained; converting the wavelengths of the first light beam and the second light beam into a second recording wavelength, and rotating the rotated vectors of the first light beam and the second light beam at least once to obtain in-material vectors of the first light beam and the second light beam; determining the in-air vectors of the first light beam and the second light beam according to the in-material vectors of the first light beam and the second light beam; and determining incident angles of the first light beam and the second light beam according to the in-air vectors of the first light beam and the second light beam. According to the method, the manufacturing efficiency of the two-dimensional pupil-expanding body holographic optical waveguide comprising the coupling-in, turning and coupling-out body holographic grating can be improved.

The invention relates to a wind measurement laser radar system, which comprises a first light source assembly for emitting first signal light and a second light source for emitting multimode pump laser, the acousto-optic device is used for performing pulse and frequency shift modulation on the first signal light to obtain second signal light; the first optical fiber is a double-cladding erbium-ytterbium co-doped optical fiber and is used for amplifying the second signal light to obtain third signal light; the polarization reflection device filters amplified spontaneous emission light in the third signal light to obtain fourth signal light; the first optical fiber further amplifies the fourth signal light again to obtain fifth signal light; the acousto-optic device performs pulse and frequency shift modulation on the fifth signal light again to obtain sixth signal light; the time division switching device controls the deflection module to deflect the sixth signal light, so that the sixth signal light is split by the beam splitting module at different time to obtain seventh signal light, the seventh signal light is emitted through different ports, the power of the two-way amplifier can be further improved, and the detection distance of the wind measurement radar is increased.

To provide a high efficiency light guide element.SOLUTION: A light guide element has a first light guide portion that propagates a light beam incident thereon while reflecting the light beam therein, and a second light guide portion that emits the light beam from the first light guide portion part by part while reflecting the light beam therein. A first optical film 10-i is provided on the first light guide portion, and a second optical film 11-i different in characteristics from the first optical film is provided on the second light guide portion to be adjacent to the first optical film. A first light guide member 1-i constituting the first light guide portion and a second light guide member 1-ii constituting the second light guide portion are closely adhered or joined to each other.SELECTED DRAWING: Figure 1

A forage harvester with a camera system. The camera system is configured to detect and evaluate a harvested material flow processed by working units of the forage harvester. The harvested material flow comprises whole grains, and comminuted grains as grain components and non-grain components. The camera system comprising an image sensor and an objective arranged or positioned upstream from the image sensor. The image sensor, arranged or positioned opposite the viewing window, is positioned in a housing which is arranged or positioned on a discharge chute of the forage harvester and in which a transparent viewing window is arranged or positioned, past which the harvested material flow flows. Light beams from a first light source are directed onto the harvested material flow. Further, an image analysis apparatus receives images from the image sensor of the harvested material flow for evaluation.

The embodiment of the invention provides a flip chip offset measurement system and method, the measurement system comprises a first light source and a second light source which are different in emergent light beam wavelength, an imaging assembly and a processing assembly, and the first light source is controlled to emit a first light beam which penetrates through a flip chip and irradiates a first target in a deep layer; obtaining a first image containing the first target from the first detector; controlling a second light source to emit a second light beam to irradiate a second target on the surface of the flip chip, acquiring a second image containing the second target from a second detector, and finally acquiring a first offset and a second offset of the flip chip relative to the substrate based on the first image and the second image by a processing assembly, and obtaining the bonding offset of the flip chip according to the first offset and the second offset. According to the invention, the dual-wavelength light source is adopted to cooperatively irradiate the flip chip in a time-sharing / wave-band-sharing manner, so that the penetrability-reflectivity contradiction of single-wavelength detection is broken through, and the accuracy and reliability of lamination offset detection are improved.

The present invention discloses a multi-component gas concentration detection system, which relates to the field of gas concentration detection, and comprises: a light source, which is used for emitting detection light covering the absorption wave band of a target gas; the light splitting assembly is used for dispersing the detection light and at least splitting the detection light into a first light beam and a second light beam; the air chamber is provided with an optical signal detection module and an acoustic signal detection module; the first light modulator is used for carrying out wavelength selection and modulation on the second light beam; wherein the first light beam is received by the light signal detection module to form an absorption spectrum detection light path; the second light beam is absorbed by the gas to be detected and then excites a sound wave signal through a photoacoustic effect, and the sound wave signal is received by the sound signal detection module to form a photoacoustic spectrum detection light path. By adopting the scheme, synchronous detection of multi-component gas, compactness of a detection structure and high-sensitivity detection of low-concentration gas can be considered.

A light source module including a light guide plate, a first light source and a plurality of optical microstructures is provided. The light guide plate has a first light incident surface, a first side surface and a first surface. The first light incident surface and the first side surface connect the first surface. The first surface has a first area and a second area. The second area is located between the first area and one of the first light incident surface and the first side surface. A first light source is disposed on one side of the first light incident surface of the light guide plate. A plurality of optical microstructures are disposed on the first surface. A distribution density of the plurality of optical microstructures in the first area is less than a distribution density of the plurality of optical microstructures in the second area.