465 results about "Micro lens array" patented technology

The embodiment of the invention provides an optical detection device which comprises an imaging assembly and a photoelectric detection device, and the imaging assembly is used for forming an image on an image plane of a to-be-detected area of a wafer. And the photoelectric detection device is used for receiving images and is arranged at the image plane. The photoelectric detection device comprises a light beam separation assembly and a sensor assembly, the light beam separation assembly is used for dividing a continuous first light signal in an image into multiple beams of second light signals, and the light beam separation assembly comprises a microlens array. The sensor assembly is used for receiving multiple beams of second optical signals, and each pixel unit of each sensor in the sensor assembly is used for receiving one beam of second optical signal in the multiple beams of second optical signals. The sensor assembly comprises a single-pixel sensor, and the single-pixel sensor corresponds to one micro lens in the micro lens array; and / or, the sensor assembly comprises a multi-pixel sensor, the multi-pixel sensor corresponds to a plurality of microlenses in the microlens array, and spatial segmentation is beneficial to improving the signal-to-noise ratio.

The invention discloses a high-refractive-index nano-composite optical adhesive and a preparation method thereof, and belongs to the technical field of optical transparent adhesives. The optical adhesive is prepared by taking a polyurethane acrylate oligomer with a specific structure as matrix resin, introducing surface-modified barium titanate and zirconium oxide core-shell nanoparticles as a functional filler, and matching with an active diluent, a photoinitiator and a silane coupling agent in a specific proportion. Through the design of the core-shell structure, the core problems that the high-refractive-index nanoparticles are easy to agglomerate in an organic resin matrix, the dispersion stability is poor and the bonding force with a matrix interface is weak are effectively solved. The prepared optical adhesive has a refractive index of more than 1.65, a light transmittance of more than 99% and a haze of less than 0.3% after being cured, has excellent bonding strength, weather resistance and long-term use stability, and is especially suitable for precise lamination of high-end display devices (such as OLEDs (Organic Light Emitting Diodes) and micro-lens arrays).

A light source a backplane including drive circuits formed thereon, an array of micro-light emitting diodes (micro-LEDs) bonded to the backplane, and an array of micro-lenses on the array of micro-LEDs. Each micro-LED of the array of micro-LEDs includes a mesa structure that includes a p-doped semiconductor layer, an n-doped semiconductor layer, an active region between the p-doped semiconductor layer and the n-doped semiconductor layer, and a dielectric layer underneath the p-doped semiconductor layer or the n-doped semiconductor layer and surrounding the active region. In some embodiments, the center of the active region of a micro-LED of the array of micro-LEDs is horizontally offset from the center of the mesa structure of the micro-LED and the center of a corresponding micro-lens of the array of micro-lenses.

The invention provides a light field three-dimensional reconstruction method and system based on a microlens array and polarization modulation, and a medium, and the method comprises the steps: carrying out the polarization coding of light rays at different angles at an exposure moment based on a polarization modulator, and obtaining different polarized light information; focusing light to an imaging surface based on an imaging lens, and recording view images of different polarized light information based on a micro-lens array; based on the polarization characteristics of the view angle image, view angle decoding is carried out on the view angle image based on the polarization characteristics, and light field images of multiple view angles are obtained; preprocessing the light field images of the multiple visual angles to obtain preprocessed images of the multiple visual angles; analyzing the light intensity distribution information based on the preprocessed image to obtain light field data, and reconstructing the light field image based on a reflective projection algorithm to obtain a reconstructed image; multi-view image capturing is achieved through multi-state polarization coding, light intensity analysis is conducted on multi-view light field images, three-dimensional reconstruction of a high-speed dynamic scene is achieved, and the image reconstruction precision is improved.

The present application relates to the technical field of optical lenses, and discloses a peripheral defocus control lens and a manufacturing method. The peripheral defocus control lens comprises: a substrate, a microlens array, and a freeform surface. The substrate is a main area of the lens and has a spherical surface shape. The microlens array is arranged on the outer side of the substrate and is used for providing myopic defocus. The freeform surface is distributed on the inner side of the substrate and is used for compensating for or screening out refractive deviations in peripheral refraction of human eyes.

The invention discloses a high-flux zebra fish behavior analysis device and method, and aims to solve the problem of compatibility of plate edge distortion and a multi-type pore plate, a telescopic mechanism is arranged in a shell of the device, an isolation cavity is formed in the shell when the telescopic mechanism is retracted, a micro-lens array and a light filter plate are sequentially arranged in the isolation cavity from top to bottom, and the micro-lens array and the light filter plate are arranged in the shell. A stimulation module is arranged at the bottom of the light filter plate, a pore plate placement area is arranged between the stimulation module and the light filter plate, and a universal adaptive bracket for accommodating a standard pore plate and a non-standard pore plate is arranged in the pore plate placement area; a camera module comprising at least one high-frame-rate camera with a fixed focal length is correspondingly arranged above the porous plate placing area, the camera module is connected with a control and analysis module, distortionless track diagrams, heat diagrams and behavior parameters are output online, and the optical mechanical integrated distortion correction and porous plate combined universal adaptation structure is used for correcting the distortion of the porous plate. When the same set of light path is switched between standard plates and non-standard plates of different models, the distortion of the edge view field is automatically compensated.

The invention provides a micro-lens array multi-point alignment focusing method, a storage medium and electronic equipment, and relates to the technical field of lens array detection. According to the algorithm, three unit lens point positions which are far away from each other on an actual array lens sample piece are selected as reference input points, after reference coordinates and actual coordinates are obtained, a vector length scaling coefficient, xy-direction offset and a rotation angle are calculated in sequence, then a conversion matrix is obtained through plane fitting, and the conversion matrix is calculated. And finally, accurate alignment and focusing of any reference point and an actual product point in the xyz three directions are realized. The method does not need to consider the rotation direction and the deviation angle of sample placement, is high in adjacent point test positioning and movement completion speed, has the characteristics of high precision, simplicity in implementation, low cost and the like, and effectively solves the problems of low lens positioning and focusing efficiency, insufficient precision, complex calculation and the like of a traditional micro lens array unit. The micro-lens array is suitable for various application scenes depending on the micro-lens array, such as optical sensing, 3D imaging and the like.

A sensing system may include an illumination projector, an image sensor, and one or more controllers. The illumination projector may project a partial illumination pattern on a target object. The image sensor may sense the partial illumination pattern projected on the target object and may generate signals representative of the sensed illumination pattern. The one or more controllers may control the illumination projector and process the signals generated by the image sensor. The illumination projector may include a microlens array and an emitter array. A spatial relationship of emitters of the emitter array to microlenses of the microlens array may cause the emitter array and the microlens array to project light upon the target object in the partial illumination pattern.

The invention provides a virtual reality display method and system, a computer and a storage medium. The method comprises the following steps: collecting sight movement data and head movement data of a user; predicting a fixation point area at the next moment based on the historical movement track of the fixation point area; according to the scene depth information, the sight line moving speed and the head motion data of the fixation point area at the next moment, predicting the predicted focal plane depth at the next moment, and dynamically adjusting the configuration of the micro-lens array in the optical assembly to match the predicted focal plane depth. The depth of a focal plane is predicted through fusion data of eye movement tracking and an inertial measurement unit, the configuration of a micro-lens array is dynamically adjusted, meanwhile, a display picture is divided into a fixation point area, a fuzzy display area and an atmosphere rendering area, and based on differentiation rendering processing, the convergence adjustment conflicts of vision are remarkably relieved, the graphic calculation load is reduced, and the display quality is improved. And a self-adaptive high-definition display effect is realized.

The invention, which belongs to the technical field of spectral imaging, discloses an ultra-wide-band ultra-wide-field-of-view high-spectral-resolution real-time imaging spectrometer comprising a first micro-lens array, a plurality of optical fibers, a plurality of second micro-lens arrays and a plurality of assemblies. First micro lenses in each column of the first micro lens array are arranged on a vertical plane arc, and micro lenses in each row are arranged on a horizontal plane straight line, so that incident light of a one-dimensional ultra-wide view field is obtained in real time; through optical fiber coupling, incident light is transmitted to the second micro lens array to be collimated into parallel light beams; according to the components, light of different wavebands is processed through the optical filter, the plane transmission grating and the detector, first-order diffraction light beams of different wavelengths in the different wavebands are received by the detector after diffraction, and space information and spectral information are obtained in real time according to an irradiated target block. The imaging spectrometer provided by the invention has the advantages of ultra-wide wave band, ultra-wide field of view, high spectral resolution, real-time measurement, compact structure and high stability, and is suitable for a remote sensing photoelectric reconnaissance detection system.

The utility model provides a laser ablation device which comprises a first laser light source used for emitting treatment laser; the optical splitter is arranged at the output end of the first laser light source and is used for splitting the treatment laser into multiple paths of split laser; wherein the branch lasers are arranged in rows and columns; the optical modulator is arranged at the output end of the optical splitter and is used for performing independent power regulation and control on each branch laser; the optical fiber coupler is arranged at the output end of the optical modulator and is used for coupling the branch lasers into the optical fiber branches of the optical fiber array one by one; the optical fiber array is connected between the optical fiber coupler and the focusing micro-lens array, and each optical fiber branch corresponds to one focusing micro-lens of the focusing micro-lens array; and the focusing microlens array is used for focusing the split laser onto the diseased tissue in space through focusing microlenses for ablation treatment. The technical scheme can be used for ablation treatment of various irregular pathological tissues, and damage to surrounding healthy tissues is avoided.

The invention relates to an LD area array beam shaping and homogenizing system based on a microlens array and a use method thereof. The system comprises an LD area array light source, a fast axis pre-correction unit, a two-dimensional shaping and homogenizing unit, a relay lens group and an output coupling unit which are sequentially arranged along a light path, the fast axis pre-correction unit is a single-row micro-cylindrical lens array composed of a plurality of micro-cylindrical lenses; the two-dimensional shaping and homogenizing unit comprises a first microlens array and a second microlens array which are sequentially arranged along the optical axis, and the first microlens array and the second microlens array are both positive spherical microlens arrays arranged in an N * N matrix. According to the LD area array light beam shaping and homogenizing system, light beam segmentation and superposition are achieved, eventually homogenization of output light spots is achieved, and the light spot uniformity reaches 90% or above.

The invention belongs to the technical field of semiconductor packaging and optical communication, and particularly relates to a photoelectric co-packaging glass substrate, a processing technology of the photoelectric co-packaging glass substrate and a photoelectric co-packaging module. A photoelectric co-packaging glass substrate comprises: a glass substrate; at least one electrical interconnection via penetrating the glass substrate; the at least one rewiring layer is arranged on the surface of the glass substrate and is electrically connected with the electrical interconnection through hole, and the electrical interconnection through hole and the rewiring layer form an electrical interconnection structure for vertical transmission and horizontal wiring of electrical signals; the at least one optical waveguide channel is embedded in the glass substrate; the optical path steering groove structure is arranged in the glass substrate and is connected with the optical waveguide channel; the micro-lens array is arranged on the upper surface of the glass substrate, each micro-lens corresponds to one optical signal port of the optical waveguide channel in the spatial position, and the micro-lens array is configured to couple divergent beams perpendicular to the surface of the glass substrate to the optical waveguide channel.

An image sensor includes a sensor substrate including a plurality of pixels for sensing incident light, and a nano-photonic microlens array arranged to face a light incident surface of the sensor substrate, and including a plurality of nano-photonic microlenses for condensing incident light. Each of the plurality of pixels includes a plurality of photosensitive cells that are two-dimensionally arranged in a first direction and a second direction perpendicular to the first direction and are configured to independently sense the incident light, and an isolation for electrically isolating the plurality of photosensitive cells, each of the nano-photonic microlenses includes a plurality of nano-structures that are arranged such that the light transmitting each of the nano-photonic microlenses has a convex phase profile, and the plurality of nano-structures are arranged in the form of a two-dimensional array in a diagonal direction between the first direction and the second direction.

The embodiment of the invention provides a head-up display system, and belongs to the technical field of display. The head-up display system comprises an image generation unit, the image generation unit comprises a light source module, a collimation module, a micro-lens array module and a display panel which are parallel and sequentially arranged in the optical axis direction, light emitted by the light source module is adjusted to be parallel light through the collimation module, the micro-lens array module is used for deflecting the parallel light, and the display panel is used for displaying the light emitted by the light source module. A preset included angle is formed between the deflected light and the normal of the display panel; the reflector assembly is used for receiving external environment light and reflecting the received external environment light to the display panel, and the display panel is used for reflecting the external environment light to the direction deviating from the reflector assembly so as to eliminate stray light in the head-up display system. The head-up display system provided by the embodiment of the invention can effectively eliminate internal stray light, and is provided with the small-size image generation unit, so that the overall occupied space of the HUD is reduced.

The invention provides an illumination system and projection equipment. The lighting system comprises a light source module, a wavelength conversion device, a first light guide assembly, a second light guide assembly and a micro-lens array module. The light source module is used for providing a plurality of green and blue laser beams. The wavelength conversion device is used for generating fluorescent light beams. The first light guiding assembly and the second light guiding assembly are used for guiding a fluorescent light beam and a green laser light beam respectively. The fluorescent light beams form fluorescent light spots on the first area of the first side face of the micro-lens array module. The plurality of green laser beams form a plurality of green light spots on a second area of the first side surface of the micro-lens array module. The first region is adjacent to the second region. The illumination system and the projection equipment provided by the invention avoid energy loss and have good light uniformity.

The invention is suitable for the technical field of diffractive optics, and provides a self-adaptive chromatography grating dispersion correction method and system based on deep learning, and the method comprises the following steps: enabling an incident light beam to be diffracted through a chromatography grating, and obtaining a multi-stage chromatography diffraction light beam; dispersion angle compensation is carried out on the multi-stage diffraction beams through the plane straight stripe blazed grating; collimating the corrected light beam by using a double-barrel lens group and forming an image space telecentric light path to obtain an image space telecentric light beam; performing spectral beam splitting and aberration pre-correction on an image space telecentric beam through a micro-lens array, and then performing image acquisition to obtain a pre-corrected multi-spectral image; and based on a deep learning algorithm, carrying out real-time fusion processing on the pre-corrected multispectral image, dynamically adjusting the deflection angle of the microlens array, and outputting a chromatic dispersion corrected tomographic microscopic image. According to the method, the axial color difference and the transverse color difference of the chromatography system can be remarkably reduced, and the method is particularly suitable for application scenes needing wide spectrum coverage and high signal-to-noise ratio.

An illumination system 700 having a first and second telescope each comprising a respective array of micro-lenses 604, 606 and 704, 706 which are optically coupled to form respective arrays of micro-l

A CMOS image sensor includes a unit pixel array including a photodiode array, a color filter array, a micro-lens array, and a grid isolation structure laterally separating adjacent color filters. The grid isolation structure includes a first low-n grid, a second low-n grid underlying the first low-n grid, and a metal grid within the second low-n grid, the first low-n grid being narrower than the second low-n grid. The color filter array includes color filter matrixes, all color filter matrixes have the same arrangement pattern. Sizes of color filters in each color filter matrix vary depending on locations of the color filters in the color filter matrix. In an edge portion, a distance between a center of a color filter matrix and a center of a corresponding unit pixel matrix in plan view varies depending on a location of the unit pixel matrix in the CMOS image sensor.

The invention belongs to the technical field of femtosecond laser processing, and particularly relates to a femtosecond laser-based surface bulging out-of-focus lens processing method, which is used for processing a micro-lens array with the out-of-focus amount continuously changing from the eye side to the temporal side based on a plurality of bulging units. The cavity structure is machined below the bulging unit based on multiple laser control, the cavity structure provides a preset transformation foundation for subsequent secondary machining, the bulging unit is conveniently converted into a micropore structure, and after conversion is completed, the light transmittance does not obviously change. Under the condition that the light transmittance meets the requirement, the vision correction defocus lens which better meets the requirement for the real defocus amount of the retina and can prolong the service cycle after secondary processing is achieved.

Device (1.1-1.m) for homogenizing laser light (2.1-2.m), comprising - a first microlens array (3) with a plurality of microlenses (30.1-30.n) arranged side by side in a first direction, - a second microlens array (4) with a plurality of microlenses (40.1-40.n) arranged side by side in the first direction, wherein the second microlens array (4) is arranged at a distance from the first microlens array (3) in the direction of propagation of the laser light (2.1-2.m) and the plane (41) of the lens vertex of the second microlens array (4) is angled at an angle |α| to the plane (31) of the lens vertex of the first microlens array (3). is inclined and wherein the microlens arrays (3, 4) are configured such that the focal lengths of the microlenses (30.1-30.n, 40.1-40.n) arranged next to each other in the first direction change from the first microlens (30.1, 40.1) to the nth microlens (30n, 40n), characterized in that an optical wedge (5) is arranged behind the second microlens array (4) in the direction of beam propagation and the focal lengths of the microlenses (30.1-30.n, 40.1-40.n) of the microlens arrays (3, 4) are selected such that a focal plane (6) of the device (1.1-1.m) lies in an air gap (7) between the second microlens array (4) and the optical wedge (5).

An optical component (1) comprises a diffraction grating and a microlens array that are hexagonal and angularly offset from each other by 10° to 50°. Such an optical component is particularly well-suited for use in a wavefront analyzer. The wavefront analyzer can alternatively have two configurations, in which the distance between the optical component and an image sensor is close to f / 2 or 3·f / 2, where f is the focal length of the microlenses (11). Such a wavefront analyzer can be compact, easy to use, and compatible with a wide range of wavelength values ​​for the electromagnetic radiation to be analyzed. (Shorthand figure: Figure 1)

A near-eye display device includes a first light transmission substrate, a plurality of arrays of display units, a second light transmission substrate, and a plurality of arrays of optical elements. The arrays of display units are configured on the first light transmission substrate. An interval between two adjacent display units is a light transmission region. The second light transmission substrate is configured in a different layer from the first light transmission substrate in a stacking direction. The arrays of optical elements are configured on the second light transmission substrate. An interval between two adjacent optical elements is a light transmission region. Each display unit has a one-to-one correspondence with the optical element in the stacking direction.

The utility model provides a laser diagnosis device comprising a first laser light source used for emitting diagnosis laser; the light deflector is connected with the output end of the first laser light source and is used for carrying out light beam deflection at a specific angle on the diagnosis laser; the optical fiber coupler is arranged at the output end of the optical deflector and is used for coupling the diagnosis laser with the deflected light beam into one optical fiber branch of the optical fiber array; the optical fiber array is connected with the optical fiber coupler and is used for transmitting the diagnosis laser coupled by the optical fiber coupler to a focusing microlens of the focusing microlens array; wherein the optical fiber branches in the optical fiber array are mutually independent; the focusing micro-lens array is connected with the optical fiber array and is used for focusing the diagnosis laser on the diseased tissue through a focusing micro-lens to generate a laser signal with tissue characteristic information; wherein each focusing microlens in the focusing microlens array is correspondingly connected with one optical fiber branch of the optical fiber array; the device is compact in structure, easy and convenient to operate and capable of conducting refined diagnosis on diseased tissue.

This invention provides a photomask-based light projector, depth camera, and item picking system, comprising: a light source for projecting a linear laser array; a microlens array disposed on the light-emitting side of the light source for receiving the linear laser array and homogenizing it into a surface light; and a photomask, including a pre-set pattern structure disposed on the light-emitting side of the microlens array for receiving the surface light and projecting a structured light pattern according to the pattern structure. In this invention, a rotating mirror drives the rotation of multiple light-reflecting surfaces to reflect the linear laser projected by the light source onto the microlens array to form a linear laser array. The microlens array then homogenizes the linear laser array into a surface light, which is then projected into a structured light pattern through the photomask. This not only significantly improves the light projection power compared to VCSEL-based structured light technology but also provides a significantly denser light spot compared to galvanometer scanning devices, thereby improving the resolution of the depth camera.

The invention discloses a device and a method for synchronously detecting the focal length and the surface topography of a micro-lens array, which can realize synchronous detection on the focal length and the surface topography of the micro-lens array through a set of system, realize mutual matching between two parts of results and greatly shorten the detection time. The device comprises a first monochromatic laser light source (1), a first collimating lens (2), an attenuation sheet (3), a reflector (4), a microlens array sample (5), a microscope objective (6), a barrel lens (7), a first quarter-wave plate (8), an area array detector (9), a first monochromatic optical filter (10), a second monochromatic laser light source (11), a second collimating lens (12), a linear polarizer (13), a beam splitter prism (14), a polarization beam splitter prism (15), a second quarter-wave plate (16) and a reference lens (17). A third quarter-wave plate (18), a second monochromatic optical filter (19) and a polarization camera (20).

The invention provides an ultra-short and ultra-strong laser pulse measuring device and an optical time-space coupling distortion measuring and data processing method based on the device. The device comprises an ultra-short and ultra-strong pulse laser system to be measured, an attenuation module, a beam splitter, a spectral phase measurement unit, a reflector, a micro-lens array, a binary intensity coding plate, a lens, a precision displacement platform, a dispersion element, an imaging lens and a CCD (Charge Coupled Device). The device and the method can be applied to quantitative measurement of ultrashort pulse light space-time coupling distortion.

The invention provides a diffusion screen and a display device. The diffusion screen and the display device can be applied to a vehicle-mounted system and a vehicle. When the diffusion screen provided by the invention is applied to the display device, the quality of a display image can be improved, so that the user experience is improved. Specifically, the diffusion screen comprises a first surface, a plurality of first main areas are distributed on the first surface, and each first main area comprises N1 first secondary areas. Each first area in the N1 first areas is a micro-lens array, meanwhile, the period of each first area is one of M periods included in the diffusion screen, and the M periods are used for matching diffraction angles of red light, green light and blue light in incident wavelengths. Specifically, the period of each first area is the distance between the centers of any two adjacent microlenses in the corresponding microlens array. Wherein N1 is an integer greater than or equal to 3, M is an integer greater than or equal to 3, and M is less than or equal to N1.

The invention relates to the technical field of ultra-precision optical manufacturing, in particular to a fast tool planing method for a micro-lens array, a medium and equipment. The method comprises the steps that a non-interference feasible planing tool is determined according to surface shape data of a micro lens array to be machined; building a parameter physical model of planing fundamental frequency, surface roughness and single unit machining duration based on micro lens unit parameters, cutter parameters and machining parameters; by taking a parameter limiting condition as a nonlinear constraint and the total processing duration as a target function, optimizing and solving fs, Rt, DL and fx to obtain the shortest processing duration; and finishing machining by adopting optimized parameters. According to the method, a multi-physical parameter model is innovatively constructed, collaborative optimization of optical performance (surface shape), process capability (roughness and dynamic characteristics) and manufacturing efficiency (processing time) is realized, nanoscale roughness and dynamic stability are ensured, a large-scale array processing period is remarkably shortened, and an efficient path is provided for batch manufacturing of ultra-precise optical elements.

The present disclosure relates to an intraoral scanning system configured to determine a three-dimensional surface model and a plurality of focus images. The intraoral scanning system comprises: a projector unit configured to emit light onto a dental object, wherein the emitted light comprises an infrared wavelength and a structured light, the structured light comprising a first visible wavelength; a first image sensor unit comprising: a first image sensor configured to acquire first reflected light from the dental object, wherein the first reflected light comprises the infrared wavelength, and wherein the first image sensor comprises a pixel array, a microlens array arranged in front of the pixel array and configured to transmit the first reflected light to the pixel array, wherein one or more microlenses of the microlens array direct the first reflected light to one or more pixels of the pixel array; a second image sensor unit comprising: a second image sensor configured to acquire second reflected light from the dental object, wherein the second reflected light comprises the structured light; a processor unit configured to: determine three-dimensional (3D) data of the dental object based on the second reflected light, determine a three-dimensional (3D) surface model of the dental object by merging the 3D data, and determine a plurality of focus images at different focus depths into the dental object by selecting a set of pixels from the pixel array associated with each microlens of the microlens array, and wherein the processor unit is configured to align a position of each focus image of the plurality of focus images to a position in the 3D surface model based on the 3D data.