2655 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 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.

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.

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 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.

A distance measuring device includes: a light source that emits first single-wavelength laser light with a first wavelength, and second single-wavelength laser light lower in frequency stability than the first single-wavelength laser light, with a second wavelength different from the first wavelength; an optical unit that causes interference between light beams, detects a first light component with the first wavelength among interfering light, and outputs a first signal, and detects a second light component with the second wavelength among the interfering light, and outputs a second signal; and a processing circuit that processes the first and second signals to calculate a first distance in a first range with first accuracy based on the first signal, and a second distance in a second range longer than the first range, with second accuracy lower than the first accuracy based on the first and second signals.

An optical system includes a light-receiving plane, a lens group, a pixel-based diaphragm, and a driving unit. The lens group is configured to direct an incident light to the light receiving plane. The pixel-based diaphragm is at an aperture stop of the lens group. The pixel-based diaphragm includes a first substrate coated with pixelated electrodes; a second substrate coated with an electrode; and an active medium layer between the first substrate and the second substrate. The driving unit is electrically coupled with the pixel-based diaphragm and configured to control the pixel-based diaphragm to have a first light transmitting pattern at a first time duration and a second light transmitting pattern at a second time duration, wherein the first light transmitting pattern is different from the second light transmitting pattern.

The embodiments of the present application provide a signal transmitting method and device, a non-volatile readable storage medium and an electronic device. The method includes: when a first light emitting element has acquired a first electric signal, converting the first electric signal into a first optical signal, inputting the first optical signal into a first light-switching-switch unit, and outputting the first optical signal to an outputting port of the first light-switching-switch unit via a first optical passage, wherein the first electric signal is an electric signal of a first type, and the outputting port is connected to an optical fiber; and when a second light emitting element has acquired a second electric signal, by using the second light emitting element, converting the second electric signal into a second optical signal, inputting the second optical signal into the first light-switching-switch unit, and outputting the second optical signal to the outputting port of the first light-switching-switch unit via a second optical passage in the first light-switching-switch unit, wherein the second electric signal is an electric signal of a second type.

For example, a lighting device capable of FOV switching is provided.The lighting device change a projection range of first light and a projection range of second light by causing a light-emitting unit and an optical member disposed on the optical path of the first light and the second light to act differently on the first light and the second light, the light-emitting unit including a first light-emitting element that emits the first light and a second light-emitting element that emits the second light.

An automatic focusing method, a laser processing apparatus and system, and a non-transitory computer-readable storage medium are provided. The automatic focusing method for a laser processing apparatus includes: controlling the first light output module to emit a first light spot onto a workpiece, and controlling the second light output module to emit a second light spot onto the workpiece; controlling the first light output module to move downward, and acquiring a plurality of images of the workpiece at different distances; and determining, based on the plurality of images, a distance between a processing surface of the workpiece and the first light output module or a thickness of the workpiece.

The optical module provided by the present disclosure comprises a circuit board and a base. The surface of the circuit board is provided with a first notch part and a second notch part. The surface of the base is provided with a first light emitting part and a second light emitting part. The first light emitting part and the second light emitting part are arranged on the same surface of the base, so that the area of the base is larger, which is more conducive to heat dissipation of the device. Since the circuit board is connected between the first notch part and the second notch part, the wiring on the surface of the circuit board between the first notch part and the second notch part can be fully utilized, and the wiring area is increased. The surface of the circuit board is provided with a first light receiving part and a second light receiving part. The first light receiving part comprises a first lens assembly and a first light receiving chip. The first lens assembly covers the surface of the circuit board, and the surface is provided with a first reflecting surface. The first light receiving chip is located on the light path reflected by the first reflecting surface. The first reflecting surface can reflect the optical signal towards the surface of the first light receiving chip, so as to couple the optical signal into the first light receiving chip.

Provided is a ranging device capable of suppressing an electric power loss and a decrease in an SNR at low cost.A ranging device of the present disclosure includes a photonic circuit and an electric circuit on the same semiconductor chip, the photonic circuit including: a light source; a waveguide that guides light from the light source; an optical switch distribution network that distributes first light split from the light; a grating array that outputs the first light distributed by the optical switch distribution network to an external target and receives the first light reflected from the target as reflected light; a first coupler that combines the reflected light with second light split from the light; and a first photodiode that photoelectrically converts light combined by the first coupler into a first electric signal, and the electric circuit including: a power supply that supplies electric power to the light source and the optical switch distribution network; and a controller that controls the power supply.

The illumination optical system is disposed at a distal end of a light guide of an endoscope. A first surface that is a surface of the illumination optical system closest to a light guide side includes a plurality of ring-shaped groove portions that are arranged in a concentric circular shape about an optical axis of the illumination optical system. The groove portions have an inclined surface that narrows a groove width from the light guide side toward an irradiation target side. In the first surface, all surfaces that are perpendicular to the optical axis and adjacent to the inclined surfaces of the groove portions are light diffusion surfaces. The light diffusion surfaces include first light diffusion surfaces that are present between the groove portions adjacent to each other. The illumination optical system satisfies a predetermined conditional expression.

The invention discloses a shaving board flatness and surface defect on-line detection device, and belongs to the technical field of shaving board optical detection.The shaving board flatness and surface defect on-line detection device comprises conveying roller equipment used for conveying shaving board bodies, a driving mechanism is erected on the conveying roller equipment, and a light adjusting mechanism is arranged in an outer shell of the driving mechanism; the light adjusting mechanism comprises a mounting frame, U-shaped frames and side frames, each U-shaped frame is provided with a first rotating shaft and a second rotating shaft, the two first rotating shafts are jointly wound with a first light-transmitting belt for adjusting illumination light, and the two second rotating shafts are jointly wound with a second light-transmitting belt for adjusting light colors. The light intensity can be automatically adjusted, shaving boards of different types and different roughness degrees can be adapted, the light intensity is adjusted to resist diffuse reflection or avoid overexposure, meanwhile, light colors are changed according to the defect types of the shaving boards and the color of the board surface, defect characteristics are enhanced, interference of wood dust is isolated, and the recognition precision is improved.

The invention relates to a wafer slotting system and method based on a shaping laser beam of a spatial light modulator. The wafer slotting system comprises a laser, a controller, the spatial light modulator, a light path transmission system, a processing platform and a range finder, the laser transmitter transmits a laser beam and inputs the laser beam to the light path transmission system; the controller controls the spatial light modulator to shape laser beams in the light path transmission system, strip-shaped first light spots and strip-shaped second light spots are sequentially formed on the surface of the wafer, and the surface of the wafer is sequentially slotted according to the same set slotting track. According to the invention, the spatial light modulator is utilized to adjust the spot size, the first spot and the second spot are sequentially formed, and the surface of the wafer is sequentially slotted according to the same set slotting track, so that when the second spot is slotted, residues on the two sides of a groove when the first spot is slotted can be removed, the slotting quality is improved, and the production efficiency is improved. And meanwhile, the structure of the groove can be adjusted by adjusting the energy distribution state of the second light spot, and the advantage of accurately modulating the grooving shape is achieved.

The utility model provides an LED light source which comprises a light source plate and a light-emitting unit arranged on the light source plate. The orientations of the multiple light-emitting units in each row in the first light-emitting area on the light source plate are the same, and the orientations of the multiple light-emitting units in each row in the second light-emitting area are the same, so that the uniformity of light emitted by the first light-emitting area and the second light-emitting area can be ensured; in each row of light-emitting units, the orientation of the light-emitting units in the first light-emitting area is opposite to the orientation of the light-emitting units in the second light-emitting area which is symmetrical about the central axis, so that the color of light in the first light-emitting area and the color of light in the second light-emitting area can be uniformly blended; and the two adjacent rows of light-emitting units in the first light-emitting area are arranged in opposite directions, and the two adjacent rows of light-emitting units in the second light-emitting area are arranged in opposite directions, so that light rays emitted by the adjacent light-emitting units can be uniformly overlapped and interwoven on a propagation path, the light mixing effect is effectively promoted, and the light-emitting uniformity of the LED light source is effectively ensured.

A measuring device for measuring a position of a pattern includes a wavelength variable unit configured to vary a spectrum of first light in accordance with an incident position at which the first light is incident to allow the first light to pass therethrough, and a moving unit configured to change the incident position by moving the wavelength variable unit. The wavelength variable unit is moved to a position based on wavelength characteristic information and intensity characteristic information, the wavelength characteristic information indicating a relationship between the position of the wavelength variable unit and a wavelength of the first light transmitted through the wavelength variable unit, the intensity characteristic information indicating a relationship between the position of the wavelength variable unit and an intensity of second light from the pattern illuminated with the first light transmitted through the wavelength variable unit.

A light output device according to an embodiment of the present invention comprises: a light source having a long axis in a first direction; a lens group which is arranged on the light source, and which deforms a first light-emitting pattern that is output from the light source into a second light-emitting pattern and outputs same; and a diffusion member arranged on the lens group, wherein: the diffusion member includes a first surface arranged to face the light source, and a second surface that is opposite to the first surface; a plurality of convex patterns are arranged on the first surface; and each of the plurality of convex patterns has a long axis in the direction parallel to the first direction.

Example methods, systems and devices provide a display with a higher resolution than the native resolution of a light modulator used. Optical components direct first light on first light paths from a light source to a light modulator and direct second light on second light paths from the light source to the light modulator. Each of multiple controllable elements of the light modulator modulates the first light to produce first modulated light to exit the light modulator at a first angle, and modulates the second light to produce second modulated light to exit the light modulator at a second, different, angle. Another set of optical components focus the first and second modulated light on a target to display first and second sequences of image frames, respectively, in which corresponding pixels in corresponding image frames are shifted by less than a pixel pitch relative to each other.

The invention relates to a wafer defect detection optical system, which comprises an imaging assembly, a detection assembly and an illumination assembly, the illumination assembly is used for forming bright field illumination and dark field illumination, the bright field illumination respectively forms reflection bright field illumination and transmission bright field illumination under reflection and transmission conditions, the imaging assembly is located on an imaging path of a to-be-detected wafer, and the detection assembly is located on the imaging path of the to-be-detected wafer. The imaging assembly is used for imaging a wafer to be detected, and the detection assembly is used for collecting an imaging picture on the imaging assembly; the lighting assembly comprises a first light source, a second light source and a third light source. The first light source is used for providing a light source during reflection of bright field illumination, the second light source is used for providing a light source during dark field illumination, and the third light source is used for providing a light source during transmission of bright field illumination. According to the wafer defect detection optical system, under the condition of the same detection station, pure bright field detection, phase deflection detection, dark field detection and light transmission detection can be provided; and the process adaptability of detecting different defect types is improved.

A method of locating light includes providing a housing have a plurality of first light sources therein, the housing further including a plurality of second light sources, the housing further having a handle for changing a position of the housing; illuminating an object with light emitting from the housing from the first light sources; grasping the handle of the housing; turning on the second light sources; illuminating the object with light from the second light sources, with the light from each of the second light sources extending along a line; adjusting a position of the housing to have the second light sources form a point at an area of interest on the object; releasing the handle; and turning off the second light sources.

An optical device includes: a second light source configured to emit laser light having a wavelength different from that of measurement light emitted from a first light source; a light splitter; a first mirror configured to add a first modulation signal to the measurement light and add a displacement signal to the laser light; a second mirror configured to reflect a second beam of the measurement light; a first color separator configured to separate the second beam of the measurement light from a second laser light beam based on a difference in wavelength; an optical modulator driven based on a drive signal and configured to add a second modulation signal to the second laser light beam after the separation; a first photodetector configured to receive the measurement light including a sample-derived signal and the first modulation signal; and a second photodetector configured to receive the laser light including the displacement signal and the second modulation signal.

Provided in the present invention are an autofocusing apparatus, a method for determining an out-of-focus distance, and a storage medium. The autofocusing apparatus comprises a multi-channel light source, a first grating mask, a microscope objective lens, a first light splitting element, a second grating mask, a first multi-quadrant detector, a second multi-quadrant detector, and a processor. The multi-channel light source provides a multi-channel illumination beam. The microscope objective lens projects a first pattern generated by the multi-channel illumination beam passing through the first grating mask onto a surface of a sample under test, and collects a reflected beam generated by the surface of the sample. The first light splitting element transmits the reflected beam to a first detection optical path and a second detection optical path, respectively. The second grating mask has a second pattern different from that of the first grating mask. The first multi-quadrant detector collects a first optical signal outputted thereby. The second multi-quadrant detector collects a second optical signal transmitted by the first light splitting element to the second detection optical path. The processor determines an out-of-focus distance of the sample on the basis of the difference between the first optical signal and the second optical signal.

An image processing apparatus includes, among other things, a control unit that adjusts luminance of a first image and luminance of a second image by adjusting a first control parameter for controlling at least one of a first light source, a first imaging unit, or a first image processing unit and a second control parameter for controlling at least one of a second light source, a second imaging unit, or a second image processing unit on the basis of luminance information of the superimposed image.

The invention discloses a device for generating Mach-Zehnder interference, a photo-thermal spectrum gas sensing device based on the device and a detection method, and belongs to the technical field of laser spectrum gas sensing. The interference device sequentially comprises an optical frequency comb and a first light beam splitter on a light transmission path; a movable arm reflector group is arranged on the light path of one light beam B in the two light beams split by the first light beam splitter, the path of the light beam B is changed through the movable arm reflector group, the light beam B intersects with the light path of the other light beam C, and a beam combiner is arranged at the intersection; the movable arm reflector group is connected with a driving mechanism, the driving mechanism is used for driving the movable arm reflector group to do linear motion, and the track of the linear motion is parallel to the straight line where the light beam B is located. The interference device does not need to use a local oscillator optical comb and a signal optical comb to carry out multi-heterodyne interference, can directly use the moving speed of a movable arm reflector group in a Mach-Zehnder interference structure to calculate a down-conversion factor, and maps each longitudinal mode of the signal optical comb in an optical frequency to a radio frequency component one by one.

The invention discloses a double-optical-path long-optical-path gas absorption cell which comprises a first light source, a second light source, two sets of spherical reflectors, two sets of plane reflectors, a roof prism, a triangular reflector, two sets of narrow-band optical filters and two sets of detectors. All the components are arranged perpendicular to the XZ plane, the light source is located above the first spherical reflector and arranged on the two sides of the sphere center, the concave faces of the spherical mirrors are relatively parallel, the plane mirrors are obliquely parallel, and the prism is correspondingly matched with the optical filter and the detector. The double light paths can adopt the same light source to split beams (improve the detection sensitivity) or light sources with different wavelengths (synchronously detect various gases), the light beams are anticlockwise reflected for multiple times in the cavity to form a long light path, and light spots are distributed in a semi-ellipse manner. According to the invention, the spherical mirror does not need to be punched, the processing and coating difficulty is reduced, the debugging error-tolerant rate is improved, the long optical path and miniaturization are both considered, and the method is suitable for related gas detection scenes of the TDLAS technology.

The invention discloses an AOI angle adjustable condensation light source assembly which comprises a lamp box frame, a first light source, a second light source, a third light source, a first condensation piece, a second condensation piece, a first light diffusion plate and a semi-reflecting and semi-transmitting lens. At least the second light source, the third light source and the lamp box frame can rotate relatively to adjust the angle; the second light source and the third light source are arranged on the two sides of a camera connecting line of the visual camera and a detected product respectively, the first light source and the second light source or the third light source are arranged on the same side, the semi-reflecting and semi-transmitting lens is installed on the path of the camera connecting line, and the light emitting end of the first light source faces the reflecting face of the semi-reflecting and semi-transmitting lens; the first light condensing part and the second light condensing part are respectively arranged at the light emitting ends of the second light source and the third light source and are used for guiding direct illumination rays to a detected product; and the first light scattering plate is arranged at the light emitting end of the first light source and is used for guiding direct illumination rays to a detected product through the semi-reflecting and semi-transmitting lens.

An anti-peep light source module and an anti-peep display device having an anti-peep function and good image quality are provided. The anti-peep light source module includes a light guide plate, a first light emitting element, a second light emitting element, a plurality of optical microstructures and a first surface. The light guide plate has a first light incident surface and a second light incident surface. Each of the optical microstructures has a first optical surface facing the first light incident surface and a second optical surface facing the second light incident surface. A magnitude of a first included angle between the first optical surface and the first surface and a magnitude of a second included angle between the second optical surface and the first surface gradually change as getting farther away from the first surface.