536 results about "Collimated light" patented technology

The utility model provides a multi-axis shape and position error synchronous measuring device. The multi-axis shape and position error synchronous measuring device comprises a laser module, a light splitting steering system, a two-dimensional position detector A arranged on a sliding block of a first linear guide rail, a two-dimensional position detector B arranged on a sliding block of a second linear guide rail, and a two-dimensional position detector C arranged on a sliding block of a third linear guide rail, initial laser output by the laser module is divided into a first Y-axis collimated light beam, a second Y-axis collimated light beam and a third X-axis collimated light beam through the light splitting steering system, and the first Y-axis collimated light beam, the second Y-axis collimated light beam and the third X-axis collimated light beam enter the two-dimensional position detector A, the two-dimensional position detector B and the two-dimensional position detector C respectively. According to the utility model, multiple form and position errors such as parallelism and verticality between the guide rails can be measured at the same time through one-time measurement, one-by-one measurement is not needed, and the measurement efficiency is greatly improved.

The invention relates to a Mini-LED display submodule and a large-size naked-eye 3D display device. The Mini-LED display submodule comprises a display panel, a first grating layer and a second grating layer which are arranged in sequence. The display panel comprises a plurality of pixel units, the first grating layer comprises a plurality of first lenses, and the first lenses are used for converting emergent light rays emitted by the corresponding pixel units into collimated light rays; the focal points of the multiple first lenses are arranged in a coplanar mode, light rays passing through the first lenses can be converted into collimated light rays with unified parameters, the multiple pixel units and the multiple first lenses are arranged in a one-to-one correspondence mode, independent regulation and control of single emergent light rays can be achieved, and the problem of cross crosstalk of different emergent light rays is greatly solved in combination with collimation processing of the first lenses; by arranging the second grating layer, directional refraction can be carried out on the collimated light rays output by different first grating layers, the collimated light rays after refraction are respectively projected to different viewpoint positions in the space, and naked eye 3D display can be realized.

The invention provides a coupling system for an on-chip light source and a photon chip. The coupling system comprises an input light source, a collimating lens, a focusing lens, a reflecting prism and an on-chip grating which are sequentially arranged in the direction of a light path, and an optical waveguide located on the side face of the on-chip grating. The collimating lens is used for primarily shaping emergent light of an input light source into a collimated light beam, the focusing lens is used for focusing the collimated light beam to the on-chip grating, and the collimating lens and the focusing lens are both aspheric plano-convex lenses. According to the system, non-uniformity caused by a large divergence angle of the semiconductor laser is effectively corrected through the aspheric micro lens, output of approximately parallel light beams is achieved, the light beams are accurately focused to the photon chip grating through the aspheric focusing lens subsequently, the coupling efficiency of light energy is greatly improved, and compared with two cylindrical lenses in the prior art, the coupling efficiency of light energy is greatly improved. The design of the focusing lens and the reflector is added, so that the number of optical elements is reduced, and error accumulation is reduced.

The invention relates to an experimental system and method for photodynamic therapy, photothermal therapy and combined research of photodynamic therapy and photothermal therapy. The experiment system comprises an optical irradiation module which comprises a plurality of laser light sources, each laser light source can output collimated light beams, the collimated light beams are combined to form a coaxial light path, and the coaxial light paths are projected to the surface of an observation object through a light beam adjusting assembly; the light path position adjusting module comprises an electric Z-axis displacement mechanism; the temperature monitoring module comprises an active temperature control substrate, an infrared thermal imager and an optical fiber temperature probe interface; the data acquisition and control module is configured to synchronously acquire laser output power, light spot area, electric Z-axis position, temperature of the active temperature control substrate, temperature sequences of a plurality of different areas and optical fiber temperature probe data, and associatively record the data with a unified timestamp; the power density can be calculated based on the real-time output power of the laser light source and the light spot area; and when the data of any temperature monitoring channel exceeds a preset safety threshold value, the laser light source is automatically controlled to close the output.

The invention discloses an optical axis calibration method and device applied to a projection illumination light path, and belongs to the technical field of optics, and the device comprises a laser which is used for transmitting an initial collimated light beam; the forward beam expander is arranged on a light emitting path of the laser and is used for expanding the initial collimated light beam to form large-aperture collimated light; the beam splitter is arranged on an emergent light path of the forward beam expander and is used for splitting the large-aperture collimated light into a reflected light beam and a transmitted light beam; the reflecting mirror is arranged in a transmission light path of the beam splitter and is used for reflecting the transmission light beam back to the beam splitter; and the reverse beam expander is arranged in a reflection light path of the beam splitter and is used for converging the reflection light beams into a point light source. According to the invention, the abstract'optical axis alignment 'problem is converted into visual'light spot superposition' judgment, the principle breakthrough from traditional indirect energy measurement to direct spatial position comparison is realized, and the calibration precision is improved.

The invention provides a laser processing device and system, and relates to the technical field of underwater laser processing. The laser processing device comprises a circular polarizer, a collimation assembly, a phase modulation element and a focusing lens. The circular polarizer, the collimation assembly, the phase modulation element and the focusing lens are sequentially arranged in the transmission direction of the laser beam; the circular polarizer is used for converting a to-be-processed light beam into circularly polarized light; the collimation assembly is used for collimating the circularly polarized light to obtain a collimated light beam; the phase modulation element is used for performing phase modulation on the collimated light beam to obtain a modulated light beam; the focusing lens is used for focusing the modulated light beam to obtain a target light beam, and the target light beam is used for machining an underwater to-be-machined object. In the design, the Rayleigh length of the target light beam is longer, and the target light beam has good water turbulence resistance, so that phase disturbance caused by water turbulence can be effectively reduced, the underwater laser processing quality is ensured, and the underwater laser processing efficiency is improved.

The invention provides a device and method for calibrating the wavelength of a spectrometer, and belongs to the technical field of optics, and the device comprises a light source module which is used for outputting wide-spectrum continuous light; the collimation module is used for outputting collimated light based on the wide-spectrum continuous light; the polarizer is used for generating linearly polarized light based on the collimated light; the rotating platform is used for placing a wave plate; the polarization analyzer is located in the light beam output direction of the wave plate; the focusing module is used for converging the light beams output by the polarization analyzer to the spectrograph; the spectrograph is used for detecting the energy of the input light beam so as to output corresponding optical data; the optical data comprises pixels and light intensity data of the input light beam; and a processor for determining a ratio of maximum response discrete light intensity data to minimum response discrete light intensity data based on the optical data, determining a peak center pixel position based on the ratio, and calibrating the spectrometer wavelength based on the pixel position. According to the invention, the technical problem of low accuracy of the wavelength calibration result of the existing spectrograph wavelength calibration method can be solved.

A light-transmitting substrate is deployed with a first of two major surfaces in facing relation to an eye of a viewer and guides light by internal reflection between the two major surfaces. An optical coupling-out configuration couples image light, that corresponds to a collimated image and that is guided by internal reflection between the two major surfaces, out of the light-transmitting substrate. A first optical coupling configuration collimates light from the eye to produce collimated light, and couples the collimated light into the light-transmitting substrate for guiding by internal reflection. A second optical coupling configuration couples the collimated light out of the light-transmitting substrate toward an optical sensor that senses the coupled-out light. A processing system derives current gaze direction of the eye by processing signals from the optical sensor.

A penta prism collimator having four freeform surfaces that fold the optical path of light received from a microdisplay collimates light for coupling to a waveguide. In some embodiments, the freeform surfaces are toroidal surfaces made from a single injection-molded element, such as a single piece of plastic. The freeform surfaces collimate the light at a variety of distances from an input pupil of a waveguide, allowing for more freedom of placement within a frame of a WHUD.

The invention discloses an array optical fiber collimator which is composed of a plurality of laminates and a plurality of collimators, spherical positioning surfaces are arranged on the laminates and the collimators respectively, the axes of the spherical positioning surfaces are perpendicular to the axis direction of the collimators, and the collimators are attached to the positioning surfaces of the laminates to form a universal joint structure for the collimators to finely adjust the axes of the collimators. According to the technical scheme, each optical fiber collimator can be conveniently and independently dimmed and fixed, so that the light beam pointing consistency of an area array optical fiber collimator product is ensured, and compared with the prior art, the light beam pointing uniformity of the area array optical fiber collimator product is improved, and compared with the prior art, the light beam pointing uniformity of the area array optical fiber collimator product is improved. A large amount of collimator screening and adapting work can be omitted, the technical bottleneck of array optical fiber collimator production is broken through, the production efficiency is high, the percent of pass is high, and the cost is low.

The invention relates to the technical field of optical scanning, and discloses an afocal optical system for scanning. Comprising an X-direction scanning galvanometer, a front lens group, a rear lens group and a Y-direction scanning galvanometer, the front lens group and the rear lens group are symmetrically arranged about a light convergence surface, the front lens group is located on the light emitting side of the X-direction scanning galvanometer, the rear lens group is located on the light emitting side of the front lens group, and the Y-direction scanning galvanometer is located on the light emitting side of the rear lens group; the front lens group comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged along the light propagation direction; the rear lens group comprises a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens which are sequentially arranged along the light propagation direction; wherein the focal length value of the afocal optical system is very large, that is, the focal power approaches to 0, so that after incident circular collimated light passes through the X-direction scanning galvanometer, the front lens group, the rear lens group and the Y-direction scanning galvanometer, the emergent light is still circular collimated light.

The present invention provides a method for in-situ measurement of film thickness and a chemical mechanical planarization device, the method comprising: on the basis of a reflection spectrum of a wafer film and an equivalent light source spectrum, generating an actually measured spectrum, the equivalent light source spectrum being data of the correspondence relationship between wavelength and light intensity generated by using reflected light passing through a planarization solution and a dielectric layer between the planarization solution and a collimating light source probe; matching the actually measured spectrum with a reference spectrum library; and obtaining a wafer film thickness corresponding to a reference spectrum matching the actually measured spectrum and using said thickness as a measurement result.

The invention relates to the technical field of medical apparatus and instruments, and discloses an ultra-pulse thulium fiber laser therapy apparatus, which comprises a laser, a coupler, a lithotripsy energy transmission optical fiber, a thulium fiber laser head, an electrical device, a mainboard, an air cooling device and an equipment case, the laser is of an all-fiber structure and outputs 1940-nanometer near-infrared laser, the 1940-nanometer near-infrared laser is transmitted to the thulium fiber laser head through the thulium-doped double-clad fiber, and a collimating lens set is arranged at the light emitting end of the laser head and used for shaping the laser into collimated light beams. An aspheric focusing lens and an optical fiber clamping mechanism are arranged in the coupler, and the coupler is used for focusing the collimated light beam into the lithotripsy energy transmission optical fiber; the lithotripsy energy transmission optical fiber is a multimode quartz optical fiber, the end face is polished and plated with an anti-reflection film, one end is connected with the coupler through an FC / APC interface, and the other end is connected with an external replaceable treatment handle; and the electrical device is electrically connected with the mainboard. According to the invention, efficient and intelligent heat dissipation management is realized, and the energy transmission efficiency and the output stability are improved.

The invention provides a crystal surface parallelism measuring method and device, a crystal is placed on a rotating mechanism, the rotating mechanism comprises a first rotary table and a second rotary table arranged on the first rotary table, and the method comprises the following steps: when X-rays are incident to the crystal at a preset angle and are captured by a detector to meet a Bragg condition, the X-rays are transmitted to the crystal; a diffraction crystal face normal of the crystal; when the second rotary table is driven to drive the crystal to move around the preset plane, the diffraction crystal face of the crystal and the machining cutting crystal face of the crystal have a deviation included angle on the preset plane; obtaining a normal vector of a processing cutting crystal face of the crystal when the emergent direction of the collimated beam is parallel to the direction of the normal of the diffraction crystal face; and determining the parallelism according to the normal vector of the processing cutting crystal face of the crystal, the diffraction crystal face normal of the crystal and a preset deviation threshold. By adopting the scheme, the parallelism between the normal vector of the processed and cut crystal face of the crystal and the normal of the diffraction crystal face of the crystal can be accurately determined.

The invention relates to a laser package comprising a base element having a mounting surface on which at least one semiconductor laser element is arranged to emit light along a first optical axis that runs substantially parallel to the mounting surface. The laser package also comprises an integrally formed deflecting element arranged in the beam path of the at least one semiconductor laser element on the mounting surface and configured to couple the light emitted along the first optical axis and coupled in via a light entry surface of the deflecting element to a second optical axis via a light exit surface of the deflecting element, which is offset substantially parallel to the first optical axis.Furthermore, the laser package comprises an optical arrangement which is arranged downstream of the deflecting element in the beam path of the at least one semiconductor laser element on the arrangement surface. The optical arrangement is configured to collimate light emitted by the at least one semiconductor laser element along at least one direction and / or is configured to homogenize light emitted by the at least one semiconductor laser element along at least one direction.

An optical system for a vehicle headlamp is provided, and includes at least one light source, at least one collimator positioned to receive light from the light source, a cylindrical lens array (CLA) positioned to receive collimated light from at least one collimator, and an irregular freeform cylindrical lens array (IFCLA) positioned to receive light from the CLA. The IFCLA includes an entry lens with numerous entry facets of irregular sizes and an exit lens with numerous exit facets. The irregularly sized entry facets on the entry lens focus light onto the middles of the respective exit facets on the exit lens.

The invention discloses a light deflection device, a transmitting module, a laser radar system and electronic equipment. The light deflection device comprises a collimating device configured to collimate an incident light beam in a first direction and a second direction respectively; the length of the incident light beam in the first direction is smaller than the length of the incident light beam in the second direction, and the collimation degree of the collimation device on the incident light beam in the first direction is higher than the collimation degree of the collimation device on the incident light beam in the second direction; the first light deflection device is configured to deflect the collimated light beam by a plurality of preset first deflection angles in the first direction and project the deflected light beam to the second light deflection device; and a second light deflection device configured to deflect the deflected light beam by a preset second deflection angle. The detection requirements of long distance and large view field range can be met at the same time, and the detection effect is improved at the same time.

The application discloses a kind of physical defect detection devices and methods of spectacle optical lens. Including collimating light source, two-dimensional light point scanning system, power compensation optical system and integrating sphere arranged in sequence on light path, photovoltaic sensor on the reflecting surface of integrating sphere, data processing board connected with photovoltaic sensor, overflow port for light beam passing is opened on integrating sphere.The application solves the comprehensive detection technical problem of detecting the defects such as bubble, scratch and pitting of the lens with optical power, and establishes the industry standard accordingly.The application is simple in structure, low in cost and high in sensitivity, and the 100% detection rate makes the operator only need to recheck the lenses that are misdetected as defects due to removable dirt on the surface.Usually, these lenses that need to be rechecked are about 3%.Thus, the application greatly reduces the intensity of workers and improves the efficiency, and also avoids unnecessary waste.

The present invention relates to an inspection apparatus and an inspection method which selectively adjust a numerical aperture of illuminating light in the form of collimated light when inspecting a target object, such as a wafer or the like, using a spectrum, thereby preventing a diffraction phenomenon caused by the illuminating light. The inspection apparatus may include: a camera unit disposed above a target object; an illumination unit configured to illuminate the target object with illuminating light; and a light detection unit configured to detect reflection light of the target object illuminated with the illuminating light, wherein the illumination unit comprises a numerical aperture adjustment device which has a first optical member having a first numerical aperture that is replaceable with a second optical member having a second numerical aperture different from the first numerical aperture so as to reduce a diffraction phenomenon caused by the illuminating light.

The invention discloses a light source device and laser lighting equipment. The light source device comprises a laser module, a collimation module and a guide module. The collimation module is arranged on a light path where the first light beam and the second light beam generated by the laser module are located and used for generating a first collimated light beam and a second collimated light beam, and the included angle between the second collimated light beam and the first collimated light beam is larger than 0 degree. The guiding module is arranged on the light path where at least one of the first collimated light beam and the second collimated light beam is located and used for changing the propagation direction of the collimated light beams entering the guiding module so that the first collimated light beam and the second collimated light beam can be propagated in the same direction. Due to the existence of the guiding module, the two collimated light beams can be almost parallel to each other or coincide with each other, two light spots corresponding to the two collimated light beams can be smoothly combined into one light spot, and the light source device can be smoothly applied to laser lighting equipment.

The application relates to an optical receiving end, a light-emitting side of a Z-block assembly is coupled with a concave mirror fixed therewith, an array detector is arranged below the concave mirror, the interval between two adjacent channels in the array detector is 0.25 mm, the concave mirror is provided with a first reflecting concave surface, a second reflecting concave surface, a third reflecting concave surface and a fourth reflecting concave surface which are distributed in a tilt manner and are coupled with four light-emitting ports of the Z-block assembly one by one, the first reflecting concave surface, the second reflecting concave surface, the third reflecting concave surface and the fourth reflecting concave surface respectively turn the four horizontal collimated lights with an interval of 0.5 mm emitted from the Z-block assembly in the vertical direction and the horizontal direction and converge on the light-sensitive surfaces of four channels of the array detector. A 1.6T 2xFR4 light engine comprises two optical receiving ends. The beneficial effects are as follows: the cost is effectively reduced, the size of the optical receiving end is small, and the packaging difficulty is reduced.

The invention provides a radiation generating system comprising a radiation unit, wherein the radiation unit comprises a light source, a first collimator, and an optical arrangement, wherein: (a) the light source is configured to generate light source radiation having a first spectral power distribution having an intensity I1,1 at a first wavelength λ1 and an intensity I1,2 at a second wavelength λ2; (b) the first collimator is configured in a light receiving relationship with the light source, wherein the first collimator is configured to collimate the light source radiation into collimated light source radiation; (c) the optical arrangement is configured downstream of the first collimator and is configured to convert the collimated light source radiation into arrangement radiation; wherein the arrangement radiation is collimated relative to the collimated light source radiation; wherein the optical arrangement comprises a second collimator and an optical filter, wherein: (i) the second collimator is configured downstream or upstream of the optical filter; (ii) the optical filter has a higher transmission for the first wavelength λ1 than for the second wavelength λ2 when irradiated under a predefined angle; (iii) the first wavelength λ1 is selected from the range of 190-230 nm and the second wavelength λ2 is selected from the range of 100-190 nm or 230-280 nm; and (iv) the second collimator is at least partly defined by a plurality of light radiation transmissive channels, wherein the radiation transmissive channels are defined by channel walls which comprise a light absorbing material, wherein the light absorbing material is configured to absorb at least part of the collimated light source radiation received by the light absorbing material.

An optical system including a self-emitting display and an optical element is provided. The self-emitting display emits a collimated light from a surface. The optical element is disposed on a moving path of the collimated light. A head-up display is further provided.

The utility model provides a beam expanding magnification detection device of a beam expander. The beam expanding magnification detection device comprises a laser, a collimating lens group, a detection assembly and the beam expander, the laser is used for emitting laser beams; the collimating lens group is used for collimating laser beams emitted by the laser; the detection assembly is used for detecting the collimation degree of the laser beam passing through the collimating lens group and detecting the size of a first light spot of the laser beam passing through the collimating lens group; the beam expander is used for expanding the laser beam collimated by the collimator group; the detection assembly is further used for detecting the collimation degree of the laser beam passing through the beam expander and detecting the size of a second light spot of the laser beam passing through the beam expander. When the beam expanding multiplying power detection device of the beam expanding lens is used, the divergence angle of the laser is adjusted through the collimating lens set, so that the laser beam before entering the beam expanding lens is collimated light, after the collimation degree of the laser beam is measured, the incident light spot and the emergent light spot of the beam expanding lens are measured, and the beam expanding multiplying power of the beam expanding lens is obtained.

The application provides a high-precision auxiliary alignment device and an alignment method for an optoelectronic autocollimator, and aims at solving the problem of low aiming accuracy in the existing laser coarse aiming auxiliary alignment method. The auxiliary alignment device comprises a rhombic prism, a corner cube mirror, a laser, a first light splitting prism and a second light splitting prism. The auxiliary alignment method is as follows: the translational position alignment of the optoelectronic autocollimator to be aligned to the aiming target is realized; the collimated light is divided into first reflected light and first transmitted light; the first reflected light is reflected by the corner cube mirror and then returns to the rhombic prism to form a reference image point; the first transmitted light is transmitted by the first light splitting prism to the surface of the aiming target, is reflected by the surface of the aiming target, and then is reflected by the second light splitting prism, and finally is reflected by the rhombic prism to form a measurement image point. The azimuth angle of the optoelectronic autocollimator to be aligned is adjusted until the measurement image point coincides with the reference image point, and the alignment is completed.

The invention relates to the field of optical devices, and discloses an optical phase shifter and an optical communication terminal, which have the characteristics of integration, simple structure, small size and the like. Wherein the optical phase shifter comprises a coaxial packaging tube shell, a piezoelectric element, a micro reflecting mirror and an optical fiber collimator; the piezoelectric element, the micro reflector and the optical fiber collimator are packaged in the coaxial packaging tube shell along the axis direction of the coaxial packaging tube shell; the piezoelectric element comprises a plurality of stacked piezoelectric material layers; the micro-reflector is fixedly arranged on the piezoelectric element, and the optical fiber collimator is located on the side, away from the piezoelectric element, of the micro-reflector and used for collimating light reflected by the micro-reflector; the piezoelectric element drives the micro-mirror to act relative to the optical fiber collimator so as to adjust the phase shift amount between the reflected light and the incident light of the micro-mirror.

A method for aligning two surveying instruments in a common space in a process that uses an autocollimation of a collimated light beam transmitted by a first surveying instrument and reflected by a second surveying instrument. In the alignment process, the first surveying instrument may emit a collimated light beam towards the second the surveying instrument and receive a reflection of the collimated light beam from the second surveying instrument in an autocollimator. The reflection may be generated for example by a mirror at the second surveying instrument. When the light beam is reflected such that autocollimation of the collimated light beam is achieved at the first surveying instrument, the first and second surveying instruments are in a predetermined positional relation with respect to one another. With a known predetermined positional relation between the reflecting mirror and the line of sight of the second surveying instrument, measurements by both surveying instruments can be made in a common coordinate system.

The invention relates to a naked-eye 3D display system based on a multi-layer phase modulation composite grating, belongs to the technical field of stereoscopic display, and aims to overcome the technical bottlenecks of low brightness of an existing parallax barrier grating, large crosstalk caused by large thickness of a cylindrical lens and serious dispersion of a diffraction element. The system comprises a two-dimensional display panel and a composite diffraction grating, pixel units of the display panel are composed of red, green and blue sub-pixel matrixes and are coded according to viewpoints. The composite diffraction grating is attached to the light emitting side of the panel, is made of an optical anisotropic material and is of a multi-layer structure, and a first micro-nano structure layer and a second micro-nano structure layer are sequentially arranged along a light path; the first layer is an aspherical focusing array, and the phase delay of the aspherical focusing array meets a quadric surface function so as to collimate light waves; the second layer is a dispersion compensation type deflection array, and the grating period of the second layer is accurately matched with the central wavelength of the sub-pixels, so that light of different colors is projected at the same deflection angle. According to the invention, full-color dispersion-free display is realized, the thickness of the device is less than 50 microns, and crosstalk is obviously reduced.

The utility model discloses a kind of non-contact optical coherence elastic imaging endoscope devices, comprising: non-contact ultrasonic excitation and optical detection integrated probe and high-speed sweep frequency laser, the integrated probe includes air-coupled ultrasonic transducer, collimating optical fiber, off-axis parabolic mirror and polymer resin packaging shell, air-coupled ultrasonic transducer diameter is not greater than 2.5 mm, center frequency is not less than 250 kHz, collimating optical fiber is single-mode fiber and emission end integrated collimator is used to produce collimating beam, off-axis parabolic mirror focal length is greater than 7 mm, the polymer resin packaging shell is used to integrally package integrated probe, the polymer resin packaging shell is designed using 3D printing, and it is windowed at the exit end of the off-axis parabolic mirror;The scanning speed of this high-speed sweep frequency laser is 100 kHz, center wavelength 1310 nm, bandwidth 100 nm, synchronous output trigger clock and sampling clock.

The present disclosure describes a single aperture laser range finder (SALRF). In an implementation, the single aperture laser range finder includes a beam extender including an aperture and an input aperture lens. A matching lens collimates light emitted from an emitter element associated with a single aperture optical circulator and received by the beam extender, respectively. A single aperture optical circulator has an emitter channel associated with the emitter element and a detector channel associated with a detector element. The emitter channel and the detector channel merge together at an input / output aperture. A light gating mechanism is configured to permit received light to enter the detector channel and to prevent the received light from entering the emitter channel. The SALRF has an electronics end cap.