1523 results about "Lens array" patented technology

The invention provides a seed packaging bag AI intelligent anti-fake traceability management system and method, and relates to the field of household kitchens. The AI intelligent anti-fake traceability management system for the seed packaging bag comprises an intelligent anti-fake packaging bag which is provided with a natural random physical texture layer, a dynamic optical structure layer covering the natural random physical texture layer and an encrypted identifier storing a digital identity (DID), and the microstructure of the natural random physical texture layer forms a uniqueness feature which cannot be copied. The dynamic optical structure layer generates a variable optical effect during physical interaction. Unique biological fingerprints are formed through microcosmic random textures of a packaging base material, the optical variable effect of a microlens array is overlaid, each packaging bag has the unclonability of the physical level, and in combination with dynamic comparison of a multi-mode AI engine on real-time texture features and block chain anchoring initial values and optical living body frequency analysis, the non-clonability of the packaging bag is improved. And a three-dimensional verification closed loop which is difficult to break by a counterfeiter is realized.

The invention discloses a method for improving the heat dissipation performance of an AlGaInP red light Micro LED chip. The method comprises the following steps: S1, preparing an epitaxial structure: processing a substrate and a buffer layer, growing an etching barrier layer and an ohmic contact layer, and carrying out stacking epitaxy on a functional layer; s2, patterning the silicon-based substrate: preparing a dielectric layer and a metal structure; s3, diamond ohmic contact layer integration: processing a p-type conductive diamond film layer, and carrying out metal reflection and bonding; s4, removing the substrate and forming an n-type structure: stripping the substrate to be in n-type contact; s5, back-end process integration: preparing an electrode and an optical structure; according to the invention, the heat dissipation performance of the chip is significantly improved; the series resistance is reduced by 30%-50%; the resistivity of the p / n type diamond ohmic contact layer is reduced by 1-2 orders of magnitude compared with ITO; gaAs material light absorption and metal shading are avoided, and the red light transmittance is improved from 75% to more than 90% by combining with the micro lens array; the method is compatible with existing MOCVD, CVD and photoetching processes, large-scale production of wafers of 2-12 inches can be achieved, and the manufacturing cost is reduced.

The invention relates to the technical field of optical nondestructive testing equipment for the sealing performance of a blueberry bottle opening, in particular to an optical nondestructive testing device and method for the sealing performance of the blueberry bottle opening. According to the technical scheme, the optical nondestructive testing device for the sealing performance of the blueberry bottle opening comprises an optical testing device, mounting grooves, a lead screw, a mounting support, a mounting ring, a Fresnel lens, a micrometer caliper, a double-color laser line light source and a rotating motor, and the mounting grooves are formed in the two sides of the interior of the optical testing device; compared with a traditional optical nondestructive testing device for the sealing performance of the blueberry bottle opening, a single light source or a simple lens group is mostly adopted, a 360-degree annular area of the bottle opening is difficult to cover, illumination on the edge of the bottle opening or a complex curved surface area is insufficient, and tiny defects are prone to being omitted; according to the optical nondestructive testing device for the sealing performance of the blueberry bottle opening, the double-color laser line light source is matched with the Fresnel lens array, multispectral reflection data are synchronously collected, the surface micro-mark contrast is enhanced by utilizing wavelength difference, and the monochromatic light detection sensitivity is effectively improved.

An optical speckle receiver for receiving a speckle signal from a sample, the optical speckle receiver comprising an optical detector and an aperture and / or lens array. The aperture and array respectively comprise a plurality of apertures or lenses and is located between the sample and the optical detector such that the received speckle pattern is obtained from multiple discrete sample locations.

The invention is suitable for the field of imaging, and discloses a micro lens array zoom module zoom method and an imaging system, and the method comprises the steps: obtaining a mapping relation table between a deviation objective lens working distance and a micro lens array state of a micro lens array zoom module; acquiring a laser spot image formed by irradiating the to-be-measured object with laser, and calculating the position of the to-be-measured object to the focal plane of the objective lens; determining an adjustment reference distance of the micro-lens array zoom module based on the position from the object to be measured to the focal plane of the objective lens, and comparing the adjustment reference distance with the mapping relation table to determine the micro-lens array state of the micro-lens array zoom module; and on the basis of the determined state of the microlens array, a focusing instruction is generated so as to realize automatic zooming of the microlens array zooming module, automatic zooming of the microlens array zooming module is realized, and the method has the advantages of extremely high focusing speed and high precision.

The utility model discloses a micro-fluidic chip imaging positioning device, and belongs to the technical field of micro-fluidic chip positioning. According to the technical scheme, the system comprises a microcosmic illumination module, a microcosmic imaging module, a chip moving and macroscopic illumination module, a macroscopic imaging module and an optical path multiplexing module; the microscopic illumination module comprises a fly's-eye lens assembly, the fly's-eye lens assembly comprises two fly's-eye lenses, the optical axes of the two fly's-eye lenses are parallel to each other, and the focus of each lens array element in one fly's-eye lens coincides with the center of the lens array element at the corresponding position of the other fly's-eye lens. The micro-fluidic chip clamp is applied to the aspect of micro-fluidic chip imaging positioning, overcomes the defects caused by an existing micro-fluidic chip clamp, solves the technical problems of universality, automation and high precision of micro-fluidic chip positioning, and has the characteristics of rapidness, automation, high precision and universality.

The invention discloses a photoresist micro-lens array preparation method and system, and relates to the field of micro-nano optical device manufacturing. The preparation method of the photoresist micro-lens array comprises the following steps: carrying out chemical mechanical polishing treatment on a silicon wafer, spin-coating photoresist on a substrate to form a cylindrical array, and eliminating solvent gradient through pre-drying; forming a fluorocarbon nano film on the surface of the photoresist through plasma deposition so as to reduce the surface energy of the photoresist; realizing hot reflux of the photoresist based on gradient annealing, wherein the gradient annealing comprises a preheating section, a main reflux section and a stable section; on the basis of the preheating section, glass transition stress is avoided, fluorine-containing gas and inert gas are synchronously introduced into the main backflow section to act on a plasma sheath layer, so that the flowing direction of photoresist is regulated and controlled, and the edge coffee ring effect is inhibited; the stable section synchronously performs plasma assistance to lock the shape; and the precision and the consistency of the micro-lens array are improved through segmented temperature regulation and control and a plasma auxiliary technology.

The invention provides an optical cross system based on silicon-based liquid crystal and a control method, and relates to the field of optical elements, and the optical cross system comprises an optical fiber array, a micro lens array, a collimating lens, a polarization conversion module, a dispersion element, a focus lens group and a liquid crystal spatial light modulator. Optical signals are coupled through the micro-lens array, a divergence angle is compressed, and parallel light beams are formed through the double-agglutination collimating lens; the polarization conversion module separates the light beam into P / S polarized light and unifies the polarization state; the dispersion element separates light beams according to wavelength space, and the focus lens group forms an elliptical Gaussian light spot on the liquid crystal spatial light modulator; the liquid crystal spatial light modulator divides a light spot into a plurality of independent control areas in the long-axis direction, and single-wavelength multi-port output, power proportion regulation and control and monitoring signal extraction are achieved by dynamically modulating the reflection phase of each area. The control method comprises the steps of optical path processing, regionalized phase modulation and real-time monitoring feedback. According to the invention, flexible routing, power balance and lossless monitoring of wavelength channels can be realized.

Lens arrays of an image reading device in which lens bodies are arranged in a main scanning direction are connected with a gap therebetween. A plurality of first slit portions and a plurality of second slit portions are provided along the main scanning direction between the lens arrays and an image sensor. The first slit portion includes first light shielding plates that separate optical paths of light passed through the lens bodies. The second slit portion includes the first light shielding plates and a second light shielding plate that restricts an optical path of light passed through a lens body closest to the gap at a gap side. The position of the second light shielding plate in a direction along the optical path at the image sensor side is closer to the lens arrays than the first light shielding plates are.

The invention discloses a high-precision multi-layer sliding shaft clamp based on a wedge-shaped guide rail structure, and relates to the field of micro-lens array manufacturing and other ultra-precision machining. The problem that in the ultra-precision machining process, when a machine tool is not provided with a guide rail in the vertical direction, centering cannot be efficiently achieved is solved, and the problems that in a traditional centering mode, operation is tedious, the installation and adjustment time is long, the production cost is high, and the machining efficiency is low are solved. A second-stage bottom plate relatively sliding in the ascending direction is arranged above a first-stage bottom plate, and a servo motor transmits power to a transmission mechanism to achieve horizontal linear motion of the second-stage bottom plate relative to the first-stage bottom plate; a third-level bottom plate which relatively slides in the ascending direction is arranged above the second-level bottom plate, a main shaft holding clamp which relatively slides in the direction perpendicular to the ascending direction is arranged above the third-level bottom plate, and the first-level bottom plate and the second-level bottom plate, the second-level bottom plate and the third-level bottom plate and the third-level bottom plate and the main shaft holding clamp are detachably connected through locking pieces. The device is used for achieving vertical centering work of the machine tool spindle.

The invention provides a near-eye light field display method, system and device, a medium and a program product. The method comprises the following steps: determining a target lens in a lens array according to the sight line direction of a target object; based on the sight line direction of the target object and the target lens, simulation light is determined, and the simulation light is consistent with the sight line direction, penetrates through the target lens and then is projected to the display device; determining a target area of the display device based on the intersection point of the simulation light and the display device; and displaying an image watched by the target object in the target area. According to the method, the matching degree between the image displayed by the near-eye light field display equipment and the visual field of the user is improved, and the fidelity of the image watched by the target object can be improved.

The invention relates to the field of light field imaging, in particular to a light field camera calibration method based on original light field image line feature detection, which comprises the following steps: acquiring a white background original light field image set of a light field camera under different shooting conditions, and processing to obtain projection center grid data of a microlens array; obtaining a checkerboard original light field image set of the light field camera under different shooting conditions, and loading projection center grid data of the micro-lens array on each checkerboard original light field image; calculating a gradient value of each pixel in each checkerboard original light field image, queuing the gradient values of the pixels, and performing region diffusion and model fitting according to a gradient angle similar direction to obtain line features in each checkerboard original light field image so as to calculate angular point coordinates of each checkerboard original light field image; and constructing a light field camera projection model, and calibrating parameters of the light field camera in combination with the angular point coordinates. According to the method, introduced errors are reduced while time is saved.

The invention relates to the technical field of target distance detection and 3D scanning reconstruction, and discloses a coaxial scanning type ultra-long distance detection laser radar system, which comprises a laser light source module, which adopts a 1550nm optical fiber laser to output high-power laser, and ensures sufficient laser energy and human eye safety; according to the invention, by adopting the high-power 1550nm fiber laser, the ultra-long distance detection is realized on the premise of ensuring the safety of human eyes, and the detection range of more than 10km can be reached, so that the limitation that the detection distance of the traditional laser radar is only 500m is broken; according to the invention, by selecting the 1550nm laser device which is safer to human eyes and greatly improving the laser power to kilowatt and even myriawatt levels, stronger echo signals are realized, so that the detection signal-to-noise ratio is remarkably improved; the micro-lens array is adopted to replace a traditional DOE diffractive optical element, efficient beam shaping of a one-dimensional or two-dimensional dot matrix is achieved through flexible regulation and control of the curvature radius and the distance of the micro-lenses, meanwhile, the manufacturing cost is reduced, and the design freedom degree is expanded.

A low-beam headlight includes a light source arrangement for generating a light cone consisting of light that is less divergent in a first transverse direction than in a second transverse direction perpendicular to the first transverse direction. The low-beam headlight includes beamforming optics for generating, on the basis of light, a light / dark distribution comprising a light / dark edge extending obliquely at least in portions with respect to the first transverse direction and the second transverse direction, wherein the beamforming optics comprises a condenser lens array for receiving incident light, and a projection lens array with a multitude of projection lenses for outputting light received by the condenser lens array. Compared to a second projection lens assigned to a second condenser lens of the first column, a first projection lens assigned to a first condenser lens of the first column of the matrix is decentered differently with respect to the assigned condenser lens along the second transverse direction.

The invention discloses a Micro-LED light extraction structure, which relates to the field of photoelectricity and comprises first glass for bearing the light extraction structure, a photoresist curing film layer which is arranged on the first surface of the first glass structure and is imprinted and cured by a PDMS template, and a micro lens array arranged on the second surface of the first glass structure, and the surface of the micro-lens array is matched with the PDMS template to be subjected to surface roughening through a nanoimprint process. Meanwhile, the invention further discloses a preparation method of the Micro-LED light extraction structure. According to the invention, a set of PDMS template is adopted to respectively carry out roughening treatment on the glass surface and impressing transfer roughening treatment on the lens surface, so that the light emitting rate is improved, and the light extraction rate of the whole Micro-LED is effectively improved.

A camera module includes an imaging lens assembly module and an image sensor. The image sensor is disposed on an image surface of the imaging lens assembly module and includes a photoelectric converting layer, a micro lens arrays layer, a light filtering layer and an anti-reflecting layer. The photoelectric converting layer is for converting a light signal to an electric signal. The micro lens arrays layer is for converging an energy of the imaging light into the photoelectric converting layer. The light filtering layer is for absorbing a light at a certain wavelength region of the imaging light. The anti-reflecting layer is disposed on a surface of at least one of the light filtering layer and the micro lens arrays layer and includes an irregular nano-crystallite structure layer and an optical connecting layer. The optical connecting layer is connected to the irregular nano-crystallite structure layer.

A thickness-distribution measurement device includes a light source; a light detector; and a control device. The light source irradiates a region of an object being conveyed with light, the region extending in a width direction. The light detector detects emitted light that has transmitted through the object. The control device obtains information on a distribution of a relative thickness of the object in the width direction based on a detection result in the light detector. The light detector includes an image sensor and a lens array. The image sensor includes a plurality of pixels arranged in the width direction, and detects an intensity of the emitted light for each pixel. The lens array includes a plurality of lenses having an equal magnification and arranged along the width direction, and collects the emitted light and forms an image of the emitted light on the image sensor.

An image sensor including a substrate having first and second surfaces, the second surface opposite the first surface; a first deep trench isolation layer in the substrate and defining pixel region groups, each pixel region group having a pair of pixel regions; a second deep trench isolation layer between the pair of pixel regions of each pixel region group; photoelectric conversion areas in each pixel region; and a lens array on the second surface and composed of two-dimensionally arranged microlenses. Each microlens having a shape, in plan view, with a long axis and a short axis, the short axis being substantially perpendicular to the long axis and shorter than the long axis. The microlenses covering each pixel region group, and a width of at least a first portion of the second deep trench isolation layer being smaller than a width of the first deep trench isolation layer.

The invention discloses a Micro-LED chip array integrated with a homogeneous micro-lens array and a preparation method thereof, and the method comprises the steps: carrying out the wafer-level precise bonding of a Micro-LED light-emitting pixel array and a CMOS drive circuit substrate, removing a substrate, integrating a homogeneous pixel-level GaN micro-lens array on a GaN-based pixel array through the photoetching, hot melting backflow and dry etching technologies, and carrying out the precise bonding of the micro-LED light-emitting pixel array and the CMOS drive circuit substrate. And finally, realizing the full-pixel common cathode conduction of the Micro-LED chip by adopting a metal interconnection process. According to the method, the Micro-LED pixel array and the micro-lens array are homogeneously integrated, are made of the same material and have no refractive index difference, so that no Fresnel loss exists on an interface, and the light extraction efficiency of a chip is improved. In addition, the method is simple in manufacturing process, low in cost, good in chip structure reliability, high in stability and suitable for being applied to industrial chip manufacturing.

The invention relates to the technical field of precision and ultra-precision machining, and discloses a CO2 full-laser machining device and method for a fused quartz micro convex lens array. The three-axis motion platform is arranged on the supporting platform; the pulse CO2 laser is used for generating a processing laser beam; the light beam transmission system sequentially comprises a light beam combining module, a light beam adjusting module, a light splitting module, a light beam guiding module, a scanning galvanometer and a focusing field lens along a laser beam path; the main light beam is guided to the scanning galvanometer through the light beam guiding module and is emitted to a fused quartz workpiece after being focused through the focusing field lens; the contour detection unit is used for taking morphology data of the micro-lens array in situ; the temperature monitoring unit is used for measuring the temperature of the processing area; the control unit is connected with the three-axis motion platform, the contour detection unit, the temperature monitoring unit and the pulse CO2 laser, and is used for adjusting the laser power and the displacement of the three-axis motion platform according to detection data; the device has the characteristics of high efficiency, high precision, non-contact processing and small heat influence.

The invention relates to a structure for improving the light extraction efficiency of a Micro-LED and a manufacturing method, and the structure comprises a basic function layer, a micro-lens optical regulation and control layer and a micro-nano secondary structure which are sequentially arranged from bottom to top, and the micro-lens optical regulation and control layer and the micro-nano secondary structure form a core optical function unit; the micro-lens optical regulation and control layer is a tightly-arranged hemispherical micro-lens array, the bottom face of each micro-lens is a circular plane completely attached to the top end of the basic function layer, the micro-nano secondary structure is located on the outer spherical face of the micro-lens optical regulation and control layer, and the micro-nano secondary structure and the hemispherical curved face of the micro-lens optical regulation and control layer form a sawtooth-shaped protruding array. The height direction of the sawtooth-shaped protrusions always extends in the spherical surface normal direction of the position where the sawtooth-shaped protrusions are located, a micro lens and a micro-nano secondary structure are designed on the Micro-LED device in an integrated mode, Micro-LED emergent light beams are shaped, the proportion of front emergent light beams is increased, the divergence angle is reduced, meanwhile, the light extraction efficiency can be improved, and the performance limit of the Micro-LED device is broken through.

The invention discloses a laser system output stability detection and analysis device and method. The device comprises an optical property detection unit and an optical property analysis unit which are in light path connection. The optical characteristic detection unit comprises a spectroscope (20), a beam shrinking mirror (21), a position sensitive detector (22), a focusing lens array (23) and a CCD camera (24) which are sequentially connected through an optical path; the optical characteristic analysis unit comprises a processor (30) and a controller (31), the controller (31) receives a processing result of the processor (30), and when the processing result of the processor (30) exceeds a set requirement of the laser system, the controller (31) sends alarm information to the laser system (10). According to the invention, the information of the laser beam position, the laser beam pointing direction and the light beam wavefront change of the laser system is measured at the same time, the influence of the light beam wavefront change on the measurement of the laser beam position and the laser beam pointing direction is eliminated, and the measurement precision of the laser beam position and the laser beam pointing direction is improved.

A system for evaluating a display device includes a display device including a display panel outputting images for a plurality of viewpoints and a lens array refracting the images; and a viewing angle meter disposed on a measuring point of the display device and extracting a viewing angle for each of the plurality of viewpoints. The viewing angle meter determines an optimal viewing coordinates of refracted images corresponding to each of the plurality of viewpoints based on the viewing angle.

A hyperspectral imaging system is characterized by comprising an imaging unit, an optical fiber scanning device, an optical fiber spectrometer, a data processing unit and a control unit, the imaging unit comprises an imaging lens and a micro-lens array, the imaging lens images a target object onto the micro-lens array, the optical fiber scanning device scans an optical signal processed by the imaging unit, and the optical fiber spectrometer performs spectrum separation on light with different wavelengths in the scanned optical signal to form spectrum data; and the data processing unit processes the spectral data and reconstructs a hyperspectral image of the target object by using the spectral data. And only an important area is scanned point by point in an optical fiber scanning mode, and hyperspectral data acquisition of a local interested target is concerned, so that unnecessary overhead of full-frame data acquisition is greatly reduced. For an application scene needing quick or real-time monitoring, the directional scanning mode greatly shortens the required integral acquisition time, and reduces the overall time delay of the system.

An assembly for coupling optical fibers to photonic ports on a surface of a photonic integrated circuits includes optical components for directing optical signals between a fiber array unit and the PIC, the optical components including a pair of lens arrays and a polarizing beam splitter. Non-polarization maintaining fibers may be used with the assembly.

The invention discloses an out-of-focus remote image read-write device, and the device comprises a remote image light path which comprises a plane spectroscope and a first reflector; wherein the plane spectroscope is obliquely arranged, and the first reflector is horizontally or vertically arranged; the out-of-focus light path comprises the plane spectroscope, a lens array and a second reflecting mirror; wherein the second reflector is vertically or horizontally arranged, the second reflector and the first reflector are respectively arranged at two sides of the plane spectroscope and are perpendicular to each other in a use state, the lens array is arranged between the plane spectroscope and the second reflector, and the lens array comprises a plurality of out-of-focus lenses which are discretely distributed in a non-central area of the substrate. Areas among the defocus lenses are light-proof. According to the out-of-focus remote image read-write device, a plurality of out-of-focus images which are discretely distributed in the peripheral area of the view can be formed while a desktop image is normally imaged, and the out-of-focus amounts corresponding to the plurality of out-of-focus images can be the same or different, so that personalized out-of-focus stimulation is formed.

The invention discloses a 3D printing auxiliary arc-shaped mirror wall forming method for a flexible optical lens array. The method comprises the steps that an ideal optical model of the flexible optical lens array is established, and physical parameters of a forming material are obtained; performing multi-physical field coupling simulation on the whole forming process to predict and quantify an initial deviation field generated by physical deformation; according to the deviation field, a pre-distortion mold three-dimensional model capable of actively compensating deformation is generated through iterative calculation of a reverse topological optimization algorithm; printing a high-precision physical mold according to the model by using additive manufacturing equipment; injecting a liquid flexible material into the physical mold for curing and molding, and demolding to obtain a flexible optical lens array; according to the invention, active and high-precision control of forming deviation is realized, the product precision and research and development efficiency are improved, the manufacturing cost is reduced, and a set of standardized and intelligent solution is provided for precision manufacturing of complex flexible optical elements.

The invention provides 2D / 3D fusion display equipment, a 2D / 3D fusion display method and a 2D / 3D fusion display device, and relates to the technical field of display. The 2D / 3D fusion display equipment comprises a first display panel, a second display panel, a third display panel and a fourth display panel, the first display panel is composed of a self-luminous display device, and the self-luminous display device comprises a MicroLED; the second display panel is located on the light emitting side of the first display panel and is composed of a liquid crystal display device; the micro-lens array layer is coupled to the first surface of the light emitting side of the first display panel and is formed by arranging a plurality of micro-lenses; wherein the first display panel is divided into a plurality of control subareas, each control subarea comprises a preset number of self-luminous display devices, and each control subarea is covered by a corresponding micro lens in the micro lens array layer. According to the invention, accurate and continuous two-dimensional and three-dimensional fusion display can be realized while high resolution of two-dimensional display and space information and display brightness of three-dimensional display are maintained.

A display substrate and a manufacturing method therefor, and a display device, relating to the technical filed of display. The display substrate comprises: a light-emitting substrate (11), comprising a light-emitting area (AA), the light-emitting area comprising a plurality of sub-light-emitting areas (EA); a packaging layer (12), arranged on the light exit side of the light-emitting substrate, the surface of the packaging layer facing away from the light-emitting substrate comprising a plurality of recessed areas (AX), the recessed areas being recessed towards the side close to the light-emitting substrate, the packaging layer comprising a plurality of sub-packaging layers (14) that are stacked, and the recessed areas comprising openings of the plurality of sub-packaging layers; and a micro-lens array (13), located on the side of the packing layer facing away from the light-emitting substrate, the micro-lens array comprising a plurality of micro-lenses (ML), the micro-lenses being located in the recessed areas, and the orthographic projections of the micro-lenses on the light-emitting substrate at least partially overlapping the sub-light-emitting areas so as to change the propagation direction of at least part of emitted light of the sub-light-emitting areas.

The invention provides a long-depth-of-field integrated imaging display, a long-depth-of-field integrated imaging method and a long-depth-of-field integrated imaging system. The long-depth-of-field integrated imaging display comprises an image processor, a display, a microlens array and a quartic phase mask, the pupil position of each micro lens of the micro lens array is correspondingly integrated with a quartic phase mask; the image processor is used for acquiring a to-be-displayed image and constructing an element image array; performing inverse convolution processing on each element image in the element image array based on a preset phase mask function, and constructing a preprocessed element image array matrix; performing negative value processing on the preprocessed element image array matrix to obtain a preprocessed element image array; and the display is used for displaying the preprocessed element image array, so that the preprocessed element image array generates a long depth-of-field image through the micro-lens array and the quartic phase mask. According to the invention, defocus blurring is effectively suppressed without introducing an extra complex optical structure, a long depth-of-field image is generated on the premise of ensuring the image contrast, and the integrated imaging display quality is improved.