6982 results about "First light" patented technology

The present invention relates to a system (101) and method (401) for performing vision inspection on at least one photovoltaic cell or module; said system (101) is capable to detect defects (102) in said photovoltaic cell or module (103) by detecting shadow representation on image captured by at least one detector (119) when said defect (102) obstructs transflected light in said photovoltaic cell or module (103); said light emitted from at least one first light source (115); wherein said system (101) further comprises of at least one second light source (118) to perform photoluminescence inspection on said photovoltaic cell or module (103).

An apparatus may include a platen, a light source system, an ultrasonic receiver system and a control system, the light source system being configured for providing first light and second light having first and second wavelengths to a target object on an outer surface of the platen and including one or more light guides configured to convey light parallel to a surface of the platen. The control system may be configured to: cause the light source system to provide the first light and the second light to the target object at a first time and a second time, respectively; receive first and second ultrasonic receiver signals from the ultrasonic receiver system corresponding to photoacoustic responses of the target object to the first light and the second light, respectively; and estimate one or more blood vessel features based on at least one of the first or the second ultrasonic receiver signals.

The invention relates to a light path system for forming point ring light spots and a laser processing device. The light path system comprises a first light source, a first collimating lens, a first conical lens and a reflecting mirror which are arranged in the first linear direction. The second light source, the second collimating lens, the focusing lens and the second conical lens are arranged in the second linear direction, the reflecting mirror is located between the second collimating lens and the focusing lens, and the center of the reflecting mirror and the center of the second conical lens are each provided with a through hole allowing a second light beam emitted by the second light source to penetrate through; a first light beam emitted by the first light source passes through the first collimating lens and the first conical lens and then is reflected by the reflector, and the reflected first light beam sequentially passes through the focus lens and the second conical lens and then forms an annular light spot at the focus of the focus lens. A second light beam emitted by the second light source sequentially passes through the second collimating lens and the focus lens and then forms a point light spot located in the center of the annular light spot at the focus of the focus lens. The composite light spot of the center point light spot and the outer ring light spot can be formed, the structure is simple, and the manufacturing cost is low.

The invention discloses a polishing device of a hub surface defect detection system, which comprises a front polishing mechanism for polishing when acquiring a front image of a hub, a side polishing mechanism for polishing when acquiring a side image of the hub, and a back polishing mechanism for polishing when acquiring an inner cavity image of the hub, the front lighting mechanism comprises a first light source and a plurality of area light sources, all the area light sources define a containing cavity for containing the first light source and the first camera, the first light source is a strip-shaped combined light source, and the first light source and the first camera are controlled by the robot to move. According to the lighting device of the hub surface defect detection system, the surface light source fixedly installed on the front face provides uniform background lighting, uniform light distribution is ensured, and reflected light and shadows are reduced; the strip-shaped combined light source can adjust the lighting position and posture along with the robot, the lighting requirements of different positions, different angles and different defects can be met, and the hub surface image collection quality and the defect detection accuracy are improved.

A total station includes a telescope and a tracking system for aligning an axis of the total station with a target. The tracking system includes a first emitter that emits first light toward the target and a first sensor that receives the first light reflected off the target. The first emitter and first sensor are horizontally offset from a lens center of the telescope. The tracking system also includes a second emitter that emits second light toward the target and a second sensor that receives the second light reflected off the target. The second emitter and second sensor are vertically offset from a lens center of the telescope. Corrective rotations are computed based on the received first light and the received second light.

A light emitting system includes one or more first light sources operable to illuminate an environment from a first angular range, one or more second light sources operable to illuminate the environment from a second angular range different from the first angular range, a device comprising a sensor, and one or more processors that determine ambient light properties and first light property values for a spatial zone in the environment using the sensor when directing the one or more first light sources to illuminate the environment, determine second light property values in the environment using the sensor when directing the one or more second light sources to illuminate the environment, and adjust the light flux output of the one or more first light sources and the one or more second light sources based at least on the ambient light properties and the first and second light property values.

An apparatus may include a platen, a light source system, an ultrasonic receiver system and a control system, the light source system configured for providing first light of a first wavelength and second light of a second wavelength to a target object on an outer surface of the platen. The control system may be configured to: cause the light source system to provide the first light to the target object at a first time and to provide the second light to the target object at a second time; receive first ultrasonic receiver signals and second ultrasonic receiver signals from the ultrasonic receiver system corresponding to photoacoustic responses of the target object to the first light and the second light, respectively; and estimate one or more blood vessel features based on at least one of the first ultrasonic receiver signals or the second ultrasonic receiver signals.

A light emitting module includes: a substrate; a plurality of light sources fixed on the substrate and generating individually controllable outputs; a light shielding member disposed between the light sources; a first lens that is disposed above the light sources and on which the light emitted from each of the light sources becomes incident; and a drive unit capable of rotating the substrate. The light sources include a first light source and a second light source. The angle formed by the axis of rotation of the substrate and the optical axis of first light emitted by the first light source and exiting the first lens differs from the angle formed by the axis of rotation and the optical axis of second light emitted by the second light source and exiting the first lens. The second light can irradiate a first circular track having the axis of rotation as its center.

The invention provides an adjustment method of detection equipment, and the detection equipment sequentially comprises an objective lens, a spectroscope, a barrel lens and a detector from an object space to an image space, and also comprises a Kohler illumination module. The illumination light beam is emitted from the Kohler illumination module and is transmitted to the objective lens through the spectroscope, when the object to be detected is arranged on one side, far away from the spectroscope, of the objective lens, the illumination light beam emitted from the objective lens is reflected to obtain a reflected light beam, and the reflected light beam sequentially passes through the objective lens, the spectroscope and the barrel lens to reach the detector. After an aperture diaphragm is inserted into the Kohler illumination module and an auxiliary lens is arranged between the barrel lens and the detector, obtaining a first light spot position of a light spot formed by the aperture diaphragm at an entrance pupil of the objective lens through the detector; and under the condition that the Kohler illumination module does not provide the illumination light beam and the light source is used as an object to be detected, acquiring a second light spot position of the light spot of the entrance pupil of the objective lens through the detector, adjusting the position of the aperture diaphragm according to the first light spot position and the second light spot position, and aligning the illumination optical axis and the imaging optical axis.

In one embodiment, a system includes a first light source configured to produce a first beam of light at a first frequency and a second light source configured to produce a second beam of light at a second frequency, where the first and second frequencies are offset by a frequency offset Ω. The system also includes one or more optical elements configured to: direct the first and second beams of light to a sample, and collect a Raman signal produced by the sample in response to the first and second beams of light. The system further includes an optical receiver configured to detect the Raman signal. The optical receiver includes a third light source configured to produce a third beam of light at a third frequency, where the third light source includes a wavelength-tunable laser, where the third frequency is adjustable.

The invention discloses an overhead line system cable state real-time monitoring method and sensing system based on distributed optical fiber sensing. The Mach-Zehnder interference and phi-OTDR fusion type distributed optical fiber sensing system comprises a first light source, a second light source, a Mach-Zehnder interferometer, a phi-OTDR and a data acquisition and processing module. Raman amplifiers are arranged at the two ends of the Mach-Zehnder interferometer, so that the sensing distance is prolonged; the optical fiber sensing system extracts an interference optical signal and a backward Rayleigh scattering optical signal corresponding to a fault event after phase modulation when the fault event occurs; then processing the extracted backward Rayleigh scattering light signal to obtain intensity change information of a fault event, and demodulating the position of the fault event; and sending the two-dimensional optical signal into a pre-trained Swin Transform network model to extract a time domain feature, a frequency domain feature and a spatial domain feature, and identifying the type of a fault event through a classifier.

An apparatus may include a platen, a light source system, an ultrasonic receiver system and a control system, the light source system configured for providing first light of a first wavelength and second light of a second wavelength to a target object along a first axis. The control system may be configured to: cause the light source system to provide the first light to the target object at a first time and to provide the second light to the target object at a second time; receive first ultrasonic receiver signals and second ultrasonic receiver signals from the ultrasonic receiver system corresponding to photoacoustic responses of the target object to the first light and the second light, respectively; and estimate one or more blood vessel features based on at least one of the first ultrasonic receiver signals or the second ultrasonic receiver signals.

A light source module includes a light guide plate, a first light source, multiple first optical microstructures, and multiple second optical microstructures. The first light source is disposed on a side of a first light incident surface of the light guide plate. The first and second optical microstructures are disposed on a bottom surface of the light guide plate, and respectively located in a first and a second zone. A first light receiving surface of each first optical microstructure facing the first light source has a first edge connecting the bottom surface, and a perpendicular bisector of the first edge passes through the first light source. The first zone does not overlap the second zone. A second light receiving surface of each second optical microstructure has a second edge connecting the bottom surface, and a perpendicular bisector of the second edge does not pass through the first light source.

The invention discloses a light source intensity adjusting method and system for surface defect detection, and the method comprises the steps: setting a first light source intensity and a second light source intensity, and obtaining a to-be-detected region image under the corresponding light source intensity, the first light source intensity being smaller than the second light source intensity; the corresponding illumination instability degree is calculated according to the to-be-detected area image under the first light source intensity and the second light source intensity, the optimal light source intensity is determined by continuously reducing the range between the first light source intensity and the second light source intensity to search the light intensity mean value of the first light source intensity and the second light source intensity or by means of step-by-step light intensity adjustment, and the light intensity of the to-be-detected area is determined according to the optimal light source intensity. And carrying out surface defect detection and measurement work on the to-be-detected area. According to the invention, the optimal illumination light source intensity suitable for the current detection environment can be rapidly adjusted.

The invention provides a wafer defect detection system and method. The detection system comprises a first light source channel, a second light source channel, a reflection detection channel, a vertical detection channel, a scattering detection channel and a motion platform. According to the wafer defect detection system provided by the invention, large-size surface topography is measured through the reflection detection channel, and small height difference and small-diameter defects can be measured through bright field detection of the vertical detection channel; the five scattering measurement channels can simultaneously detect near-infrared, visible light, inclined incident light source, near-ultraviolet and vertical incident light source wave band energy of the wafer, and can accurately detect various defects of the wafer. Defects are identified and accurately classified, sources and evolution processes of the defects are traced, and corresponding data support is provided for improvement of a wafer manufacturing process.

Some disclosed methods may involve providing first light of a first wavelength to a target object at a first time, receiving first ultrasonic receiver signals from an ultrasonic receiver system corresponding to photoacoustic responses of the target object to the first light, providing second light of a second wavelength to the target object at a second time, receiving second ultrasonic receiver signals from the ultrasonic receiver system corresponding to photoacoustic responses of the target object to the second light and differentiating a desired signal from one or more background signals based, at least in part, on the first ultrasonic receiver signals and the second ultrasonic receiver signals. The desired signal may correspond to at least a portion of a blood vessel within the target object. A light source system may be configured for providing the first light and the second light to the target object along the same axis.

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.

There is provided a robot including a first light source, a second light source, an image sensor and a processor. The processor is used to calculate an image quality of an image frame captured by the image sensor when the second light source is being turned on. The processor then determines whether to switch the second light source back to the first light source according to the image quality to accordingly identify the material of an operation surface.

An object of the present invention is to provide a lamp unit for a vehicular headlamp and a vehicular headlamp, by which it is possible to diffuse left and right ends of a high-beam light distribution pattern further to the left and right. An inner reflecting surface reflects light from a first light-emitting element as reflected light onto a lens. The lens emits the reflected light in a diffused light distribution pattern toward a front of a vehicle. An edge of a diffused light distribution pattern on an outer side of the vehicle is located further to an outer side of the vehicle than an edge of a first partial light distribution pattern on the outer side of the vehicle. As a result, left and right ends of an overall high-beam light distribution pattern can be diffused further to the left and right.

A metrology system including a heterodyne light source is provided. The heterodyne light source includes a first light source, an acousto-optic modulator and a source optical arrangement. The acousto-optic modulator receives at least one wavelength laser beam from the first light source and generates at least one corresponding frequency shifted laser beam (e.g., with orthogonal polarization). The source optical arrangement includes a receiving optical element portion and a birefringent optical element portion. The receiving optical element portion receives the wavelength laser beam(s) and the corresponding frequency shifted laser beam(s) and directs the beams along an optical path toward the birefringent optical element portion. The birefringent optical element portion combines the beams to output a combined beam (e.g., which may be utilized as part of a measurement process to determine at least one measurement distance to at least one surface point on a workpiece, etc.).

The invention relates to a double-light-source laser processing device. The device comprises a machine table, the machine table is provided with a first light source and a second light source, and the first light source and the second light source project first laser and second laser outwards respectively; the machine table is further provided with a planar two-dimensional moving mechanism, and the planar two-dimensional moving mechanism is connected with a laser machining head assembly and drives the laser machining head assembly to move transversely or / and longitudinally. The planar two-dimensional moving mechanism is provided with a reflector assembly, and the reflector assembly is used for reflecting the received laser to the laser processing head assembly; the machine table is further provided with a first laser light path and a second laser light path. The first laser light path is provided with a first reflecting mirror; the second laser light path is provided with a second reflecting mirror; the second reflecting mirror is located on the track of the first laser light path; the machine table is provided with a position adjuster and a controller; and the controller is electrically connected with the position adjuster. Two laser light sources are adopted to work, coordination is carried out through the position adjuster, operation is convenient, and cost is relatively low.

The optical module provided by the invention comprises a circuit board and a base. The circuit board surface is provided with a first gap part and a second gap part. A first light emitting component and a second light emitting component are arranged on the surface of the base. The first light emitting component and the second light emitting component are arranged on the same surface of the base, so that the area of the base is larger, and heat dissipation of the device is facilitated. As the circuit board is connected between the first gap part and the second gap part, the surface wiring of the circuit board between the first gap part and the second gap part can be fully utilized, and the wiring area is increased. And the first modulation driving chip is in routing connection with the surface of the circuit board between the first gap part and the second gap part. The surface of the circuit board is provided with a first light receiving part and a second light receiving part. The first light receiving component comprises a first refraction piece and a first light receiving chip. The first refraction piece and the first light receiving chip are respectively fixed on the surface of the first substrate with a small thermal expansion coefficient, so that the thermal deformation of the first substrate is small, and the stability of a light path can be 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.

A system for multimodal detection is provided. The system comprises a light collection and distribution device configured to perform at least one of collecting light signals from a field-of-view (FOV) and distributing the light signals to a plurality of detectors. The light signals have a plurality of wavelengths comprising at least a first wavelength and a second wavelength. The system further comprises a multimodal sensor comprising the plurality of detectors. The plurality of detectors comprises at least a light detector of a first type and a light detector of a second type. The light detector of the first type is configured to detect light signals having a first light characteristic. The light detector of the first type is configured to perform distance measuring based on light signals having the first wavelength. The light detector of the second type is configured to detect light signals having a second light characteristic.

The invention discloses a wafer front and back surface detection system and method, and the system comprises a first scanning system which comprises a first light source module and a first camera module, and a second scanning system which comprises a second light source module and a second camera module. Light spot positions formed on the front surface and the back surface of the wafer by the first light source module and the second light source module are mutually staggered along projection positions on the front surface or the back surface of the wafer, or the projection directions of illumination light emitted by the first light source module and illumination light emitted by the second light source module are different; the first camera module and the second camera module respectively collect front or back images of the wafer to obtain a scanning result, and the analysis module analyzes the scanning result to obtain a detection result. The illumination light spots on the front and back surfaces of the wafer are staggered or the projection directions of the illumination light are different, so that the problem of mutual interference of light beams generated in the synchronous detection process of the front and back surfaces of the wafer is avoided, and the accuracy of the detection result of the front and back surfaces of the wafer is improved.

The invention provides an optical device, an optical module and an optical communication system. The optical device provided by the invention comprises a tube body, and a first receiving packaging structure, a second receiving packaging structure and a first transmitting packaging structure which are mounted on the tube body. A first light receiving chip used for receiving light of a first wave band is packaged in the first receiving packaging structure. A second light receiving chip used for receiving light of a second wave band and a third light receiving chip used for receiving light of a third wave band are packaged in the second receiving packaging structure. A first light emitting chip used for emitting light of a fourth wave band and a second light emitting chip used for emitting light of a fifth wave band are packaged in the first emitting packaging structure. The optical device provided by the invention can integrate three receiving optical paths and three transmitting optical paths at the same time, and can realize compatibility of three generations of network services so as to realize smooth upgrading of different generations of network services, so that the compatibility of an optical module and an optical communication system applying the optical device to different generations of network services can be improved.

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.

The embodiment of the invention provides a detection device and electronic equipment, relates to the technical field of health data detection, and is used for solving the problem of relatively low health detection data precision caused by complex organization structure of a to-be-detected part of a user. In the detection device, a first photoelectric converter is arranged between every two adjacent first light sources, and a second light source is located in a detection area defined by the multiple first light sources and the multiple first photoelectric converters. A first distance H1 and a second distance H2 are respectively arranged between the first light source and at least two of the first photoelectric converters. A third distance H3 and a fourth distance H4 are respectively arranged between the second light source and at least two of the first photoelectric converters. A first light source, a second light source and a first photoelectric converter are distributed in the distribution area of the detection device. A PPG module can be formed between each light source and the corresponding photoelectric converter, the distances between the light sources and the photoelectric converters are different, and the effective depth of the detected skin can be different.