694 results about "Superlens" patented technology

A metalens for focusing light is described. The metalens includes a library of elements for varying the propagating phase of the focusing light over at least a 2π radians range, where the library of elements is arranged in a sub-wavelength pattern that defines spacings between the elements. Each spacing exhibiting temperature-dependent spacing changes within a temperature range and each element in the library of elements includes: a refractive index exhibiting a temperature-dependency within the temperature range, a shape exhibiting a temperature-dependency within the temperature range, and a size exhibiting a temperature-dependency within the temperature range. The metalens also includes a phase profile defined by a combination of the refractive index, shape, and size of each element in the library, and the sub-wavelength pattern of the library of elements. The metalens also includes a focal length defined by the phase profile, the focal length exhibiting a temperature-dependency within the temperature range.

The invention discloses a titanium dioxide super-lens large-view-field achromatic imaging method and device, and the method comprises the steps: building a simulation model through a time domain finite difference method, and obtaining the phase amplitude corresponding relation of TiO2 nano-column units under different sizes; and according to a first target function preset by single-wavelength super-diffraction focusing, reversely designing and iteratively optimizing the surface phase of the TiO2 super-lens by using a genetic algorithm to obtain the single-wavelength super-diffraction super-lens. And then, optimizing the genetic algorithm, and reversely designing and optimizing the phase of the single-wavelength super-diffraction super-lens again in combination with a Rayleigh-Sommerfeld diffraction formula and a second target function preset by broadband achromatism to obtain the broadband achromatism super-diffraction super-lens. And finally, point spread functions with different off-axis degrees are optimized by means of an exhaustion algorithm and an angular spectrum theory, and large-view-field achromatic super-diffraction imaging is realized. The invention effectively solves the problems of large aberration, obvious chromatic aberration, limited resolution, difficulty in parameter regulation and control and poor off-axis imaging performance of the traditional optical lens and the existing super lens in large-view-field imaging.

The invention relates to the field of integrated optical fiber microscopic endoscopy, in particular to an all-optical-fiber light beam modulation and collection system based on double super lenses and a design method of the all-optical-fiber light beam modulation and collection system. The system comprises a single-mode optical fiber, a coreless optical fiber for beam expansion and two super lenses (a super lens 1 and a super lens 2) with different functions. The super lens 1 is arranged on the end face of the fiber core of the single-mode optical fiber and focuses output exciting light to form extremely small waist spots, and the divergence angle of light beams is increased. The super lens 2 is arranged on the end face of the coreless optical fiber beam expanding area and used for refocusing the exciting light and focusing the collected fluorescence to the focus position of the super lens 1 at the same time, and the fluorescence is incident to the fiber core in parallel through the super lens 1. According to the invention, a double-super-lens system based on a high numerical aperture (NA) is fully utilized, wavefront modulation is carried out, the length of a beam expanding area is adjusted, and the loss of fluorescence in the beam expanding area is reduced, so that the collection efficiency of the fluorescence is remarkably improved, and an innovative solution is provided for the design of a super-lens-based optical fiber optical system.

The invention provides a super lens and a femtosecond laser manufacturing real-time monitoring system applying the super lens, the super lens comprises a substrate and a nano column array on the substrate, nano columns at different positions in the nano column array independently regulate and control a first wavelength light wave and a second wavelength light wave, so that the first wavelength light wave satisfies first phase distribution, and the second wavelength light wave satisfies second phase distribution. The second wavelength light wave meets the second phase distribution, so that the super lens not only can focus the first wavelength light wave and the second wavelength light wave on the same plane, but also can control the focal depth of the first wavelength light wave to be greater than the focal depth of the second wavelength light wave, so that the requirement of a femtosecond laser manufacturing real-time monitoring system is met; not only can the anti-interference capability in the machining process be improved, but also the axial position monitoring precision can be improved.

The invention relates to the technical field of semiconductor devices, in particular to an infrared photoelectric detector based on a super lens and a manufacturing method of the infrared photoelectric detector. The infrared photoelectric detector based on the super lens comprises a tube socket, a metal tube cap and a detector chip, the metal tube cap and the tube socket are fixedly connected and form a totally-enclosed packaging structure, the detector chip is packaged between the tube socket and the metal tube cap, a chip electrode of the detector chip is welded with a pin of the tube socket, the super lens is arranged at the top of the metal tube cap, and the super lens is arranged on the top of the metal tube cap. The side wall is a metal tube shell, and the super lens comprises a super lens substrate and super lens units periodically arranged above the super lens substrate. According to the infrared photoelectric detector based on the super lens, the super lens units periodically arranged on the super lens can be utilized, the transmittance of incident light can be improved, the interference effect of reflected light can be restrained, and then the detection rate of the infrared photoelectric detector is improved.

The invention discloses a reflection-transmission mixed extreme ultraviolet collimation illumination system, and relates to the technical field of extreme ultraviolet optics. The system comprises a discharge plasma EUV light source, a multilayer film ellipsoid reflector and a collimating super lens. Wherein the discharge plasma EUV light source is used for generating radiation light in an extreme ultraviolet band; the multi-layer film ellipsoid reflector adopts an ellipsoid design, is plated with a high-reflectivity multi-layer film, is arranged on a transmission line of the discharge plasma EUV light source, and is used for focusing light beams of the light source; and the collimating super lens is arranged behind the focal position of the multi-layer film ellipsoid reflector and is used for collimating the focused light beams to form parallel light beams for Talbot photoetching illumination. The extreme ultraviolet illumination system is compact in structure, high in light beam energy and high in collimation, and the exposure quality in an application scene needing high-collimation extreme ultraviolet light beams is effectively improved.

A near-to-eye display system (1) and AR glasses (3). The near-to-eye display system (1) comprises an optical waveguide module (10), an optical engine module (20) and a metalens assembly (22). A first in-coupling grating region (111) and a first out-coupling grating region (112) are formed in the optical waveguide module (10). The optical engine module (20) comprises a light source assembly (21), which is arranged opposite the first in-coupling grating region (111), and the metalens assembly (22), which is arranged between the light source assembly (21) and the optical waveguide module (10), wherein the light source assembly (21) is used for outputting image optical signals to the metalens assembly (22), the image optical signals comprising at least two types of optical signals of different attributes, and the attributes comprising at least one of a wavelength, an emission angle and an emission position. The metalens assembly (22) comprises a substrate (221) and a metasurface structure (222) on the substrate (221), wherein the metasurface structure (222) is configured to receive the image optical signals and diffract the optical signals to the first in-coupling grating region (111). The optical signals which have the same emission position have the same diffraction angle. Thus, the volume and weight of a lens of the optical engine module (20) are reduced, and the design requirements for high image quality and a large field of view are also met.

The invention discloses a super-lens image restoration method based on fuzzy prior and semantic segmentation. The method comprises the following steps: eliminating an image visual angle displacement error by adopting a feature point automatic registration algorithm; the method comprises the following steps: designing a parallel multi-scale convolution adapter on the basis of an encoder optimized by a pre-trained visual Transform model, and generating encoding features adaptive to the degradation characteristics of a super lens; splicing the degraded image and the semantic segmentation mask into a joint tensor along a channel dimension, and obtaining a prior feature based on a fuzzy prior extraction network; performing spatial feature enhancement on the semantic segmentation mask based on a semantic segmentation graph convolutional network to obtain graph features aligned with the coding features; splicing the coding features, the prior features and the image features along channel dimensions to generate fusion features, and finally outputting a preliminary recovery image; and optimizing the whole model by adopting a staged training strategy, and finally outputting a high-quality recovery graph. According to the method, the physical rationality and detail fidelity of the recovery quality are improved.

An optical emission module, an emission device, a detection device and a terminal are applied to the technical field of detection. The optical emission module comprises M light sources and a super lens, wherein M is an integer greater than 1. The super lens is used for processing the first light beams from the M light sources to obtain second light beams. On one hand, the light-emitting area formed by the multiple light sources can improve the energy density of the second light beam, and meanwhile, the energy distribution of the second light beam is more uniform. On the other hand, the super lens is used for processing the light beam emitted by the light source, the overall size of the emitting device can be remarkably reduced while light field regulation and control are achieved, and the device integration degree is improved. When the optical emission module is applied to the detection device, miniaturization of the detection device is facilitated.

Reversible phase-change materials (PCMs) can be added to or incorporated into meta-lenses, wave plates, waveguides, gratings, and other optical components to form active optical devices with controllable and adjustable optical characteristics. Local heating can be used to induce solid-state phase changes and large refractive index changes in the PCMs. The phase and index changes can provide large changes in the device's optical characteristics. Optical devices with PCM can be used for imaging applications, orbital angular momentum control, photonic integrated circuits and optical communication systems, beam steering, and other application.

The invention relates to a high-efficiency super lens based on refractive index matching and a design method thereof. The super lens comprises a super atom structure layer and a bonding substrate layer on any surface, the difference value between the refractive index of any substrate layer and the average effective refractive index of the super-atomic structure layer is smaller than a preset value; when the super lens is designed, the relation among the average effective refractive index, the impedance and the S parameter of the super-atom structure layer is constructed, the structure parameter of the super-atom structure layer is determined based on the requirement parameter of the super lens, the preset S parameter of the super-atom structure layer is obtained based on electromagnetic simulation, and the average effective refractive index of the super-atom structure layer is calculated. And the substrate layer is used as an expected refractive index matching material and is bonded on one surface or two surfaces of the super-atomic structure layer. According to the invention, the high-efficiency super lens is obtained by using the principle of refractive index matching and processing methods such as large-area bonding, the focusing efficiency of the super lens is greatly improved, the application of the super lens is promoted, and the leap-type upgrading of optical devices in the dimensions of light weight and high performance is realized.

The invention provides a super-lens reverse design method based on a selective dual-channel perception fusion network, and the method comprises the steps: obtaining a picture-phase spectrum data set through obtaining K pairs of original images and corresponding original phase spectrums; inputting the data to an adaptive difference frequency feature extraction network ADFFNet; inputting a selective non-common feature interaction network SFIFNet to respectively obtain image frequency features and spectral frequency features; the fusion reconstruction features of the image and the fusion reconstruction features of the spectrum are obtained; obtaining a picture generation result and a spectrum generation result; according to the method, the non-common frequency characteristics between the image and the corresponding spectrum can be deeply mined and deeply fused, the mapping accuracy between the image and the corresponding spectrum response can be improved, and the generation accuracy and efficiency of the image and the spectrum can be improved.

The invention provides a super lens, a super lens structure parameter determination method, device and equipment, optical imaging equipment, a storage medium and a program product. The super lens comprises a plurality of areas. Any region comprises a plurality of nano fins; wherein at least part of the area is used for focusing incident light with different wavelengths. The super lens is divided into a plurality of areas, and each area can form a super lens for focusing incident light with different wavelengths, so that wavelength division multiplexing is realized, and compared with a conventional geometrical optical lens for realizing wavelength division multiplexing, the super lens disclosed by the invention has the advantages of small volume and high integration level.

The invention discloses a multi-focus vector superlens, a design method and an optical system, and the design method comprises the steps: obtaining the Jones matrix information of a current object plane and the Jones matrix information of a target image plane, and determining a target function according to the difference between the Jones matrix information of the current object plane and the Jones matrix information of the target image plane; optimizing the current object plane Jones matrix information based on an iterative Fourier algorithm until the objective function converges, and fixing final object plane Jones matrix information; and according to the final object plane Jones matrix information, calculating final design information of the multi-focus vector super lens. According to the design method, the physical concept of polarization state regulation and control can be introduced, the requirement for the holographic function of the vector super-lens is met, and the design scheme can be rapidly determined.

The invention discloses a geometric phase-based long-wave infrared arsenic selenide superlens and a design method thereof, the superlens is composed of a substrate and an optical metasurface arranged on the substrate, and the optical metasurface is composed of a plurality of elliptic cylinders which rotate by an angle alpha and are arranged periodically. The method comprises the following steps: determining structural parameters of a microstructure unit; rotating the microstructure units by an angle alpha; according to the relation between the geometric phase and the alpha angle; adjusting the rotation angle alpha of the microstructure unit to enable the angle alpha to meet the geometric phase distribution of the microstructure unit, and determining the angle alpha of the microstructure unit; and forming a metasurface array according to the alpha angles of the microstructure units and preset periodic arrangement, and arranging the metasurface array on the upper surface of the substrate to obtain the super lens. According to the invention, high-efficiency and high-resolution imaging can be realized under long-wave infrared. The long-wave infrared arsenic selenide super lens based on the geometric phase and the design method thereof can be widely applied to the technical field of super lens design.

The invention discloses a design and implementation method of a near-infrared light-splitting super lens, and relates to the technical field of super lenses. The super lens is composed of a rotational symmetric structure, so that polarization insensitivity is achieved, incident broadband light can be dispersed to different positions of the same focal plane according to different wavelengths through ingenious optical design, an effective light splitting effect is achieved, and the polarization insensitivity of the super lens is improved by adjusting geometric parameters and shapes of the super lens nano structure units. The positions of light with different wavelengths on a focal plane can be accurately controlled; in the optimization process, a particle swarm optimization algorithm is adopted to reduce errors, and performance attenuation and optical distortion caused by dispersion can be effectively reduced by adjusting dispersion characteristics and geometric parameters of the nano-structure units, so that the precision and reliability of light splitting are improved, and the light splitting precision is improved. The identification capability of the laser detection system is greatly improved, and integration and miniaturization are realized.

The invention relates to an optical super lens suitable for an extreme environment and a preparation method thereof, and the optical super lens comprises a super lens structure layer located at the center, and moth-eye membrane structure layers, an optical substrate and an optical composite membrane which are symmetrically disposed at two sides of the super lens structure layer. The super-lens structure layer, the moth-eye membrane structure layer and the optical substrate are respectively and independently made of wide-band-gap semi-conductive materials with the thermal conductivity of 50 W / m.K or above, and at least one structure parameter of the moth-eye membrane structure layer in the thickness direction of the optical substrate is modulated so as to complete refractive index transition from the super-lens structure layer to the optical substrate. According to the invention, the problem of efficiency reduction caused by refractive index mismatch is solved, and the optical super lens can work normally under extreme conditions such as high temperature or high power.

The invention relates to full-dielectric adjustable optical tweezers based on a composite phase superlens, and belongs to the technical field of optical tweezers. Two regulation modes of geometric phase and transmission phase are integrated into a dielectric metasurface periodic structure, and a circular lens surface is combined according to a specific mapping and arrangement mode. The super lens can excite two different output electric fields under the input of linearly polarized light due to the regulation and control of a composite phase, and the two electric fields can independently exist under the input of circularly polarized light with opposite chirality. Therefore, by adjusting the polarization type of the incident light source of the super lens, free switching of multiple optical capturing modes of particles in a field can be realized. Compared with the existing optical tweezers, the control mode can be flexibly adjusted on the premise that the structure of the device is not changed, and more diversified particle capturing requirements can be met. The high-flexibility and easy-to-integrate micro-nano structure can provide powerful guarantee for the performance of a compact composite optical capturing device.

The utility model provides an anti-reflection film and a super lens, and the anti-reflection film comprises anti-reflection structures which are arranged in an array, and the anti-reflection structures are sub-wavelength structures; the filling structure is arranged between the anti-reflection structures; the antireflection film is used for the super lens, and the super lens comprises a substrate and micro-nano structures which are arranged on the substrate in an array mode. The antireflection film is arranged on a target interface; the media on the two sides of the target interface at least comprise the micro-nano structure or the substrate. According to the antireflection film provided by the invention, the light transmittance of the super lens is more ideal.

The invention discloses a data-driven ultra-wideband achromatic lens hybrid reverse design method, which is characterized in that a data-driven reverse dispersion method is adopted, a reverse dispersion project is executed in a plurality of sub-bands divided by a working band, and spatial multiplexing and global optimization are performed on all unit structures, so that the data-driven ultra-wideband achromatic lens hybrid reverse design is realized. And the ultra-lens overall structure with optimal performance and ultra-wide band continuous achromatism is obtained. Compared with the prior art, the ultra-wideband achromatic lens has end-to-end efficient design capability, can realize excellent ultra-wideband achromatic lens working performance, effectively avoids the dependence of a traditional dispersion engineering method on the dispersion regulation and control capability of the integrated resonance unit, multiplies the working bandwidth on the premise of not sacrificing the performance of the ultra-lens, and improves the working efficiency of the ultra-wideband achromatic lens. And the design precision and efficiency are remarkably improved through a data driving method, a new solution is provided for broadband design of an achromatic device, and the method has good application scenes and prospects.

The invention relates to the technical field of information processing, in particular to the technical field of optical detection, and particularly relates to a two-dimensional material layer number identification method and equipment. A photoelectron chip composed of a semiconductor light source, a 2 * 2 waveguide beam splitter, a grating coupler, an on-chip spectrometer, a super lens and an optical detector is compact in structure and low in cost; a semiconductor light source emits an optical signal, the optical signal sequentially passes through a 2 * 2 waveguide beam splitter, a grating coupler and a super lens and then irradiates a two-dimensional material sample, a displacement table is used for carrying out accurate Z-axis focusing and XY plane scanning, reflection spectrum signals are collected in real time, spectrum characteristics are analyzed through an upper computer to determine layer number information, and finally a layer number distribution diagram is generated. According to the method, rapid, automatic and high-precision identification of the number of layers of the two-dimensional material is realized, and large-range scanning detection is facilitated.

The invention provides a polarization adjustable spin decoupling metasurface based on a perovskite material. The metasurface is characterized in that the metasurface is of a three-layer structure, namely a perovskite and metal pattern layer (1), an intermediate dielectric layer (2) and a reflection bottom layer (3) from top to bottom in sequence. When the perovskite is in a metal state, the designed metasurface can independently adjust left-handed and right-handed circularly polarized light; when the perovskite is in an insulated state, the designed metasurface can independently adjust x and y linear polarized light; by switching the state of the perovskite, the phases of the circularly polarized light and the linearly polarized light can be regulated and controlled at the same time, so that different functions are realized. The optical metasurface designed by the invention has huge potential in a terahertz frequency band, and can be widely applied to beam shaping, holographic imaging, information encryption, super lenses and the like.

The utility model discloses a visible light optical system and a visible light optical lens. The visible light optical system comprises a first aspheric lens, a second aspheric lens, a super lens, a third aspheric lens, a fourth aspheric lens, a fifth aspheric lens and a sixth aspheric lens. The focal powers of the first aspheric lens, the super lens and the fifth aspheric lens are positive; the object side surface and the image side surface of the first aspheric lens are convex towards the object side; the object side surface and the image side surface of the second aspheric lens are convex towards the object side; the super lens comprises a substrate and a micro-nano structure, wherein the micro-nano structure is arranged on the object side surface and / or the image side surface of the substrate; the focal power of the fourth aspheric lens and the sixth aspheric lens is negative; the image side surface of the fifth aspheric lens protrudes towards the image side; wherein the sixth aspheric lens has the maximum focal power among the lenses with negative focal power. The visible light optical system provided by the utility model is relatively excellent in imaging quality, and the visible light optical system is relatively small in size.

The invention relates to an optical super lens with high focusing efficiency and a preparation method thereof. The optical super lens comprises a pair of optical substrates, antireflection films arranged on the surfaces of one sides of the optical substrates, moth-eye films arranged on the surfaces of the other sides of the optical substrates in a protruding mode, and a plurality of nano dielectric cylinders arranged between the pair of moth-eye films and made of high-refractive-index materials. At least one structural parameter of the plurality of nano dielectric cylinders in the length direction of the optical substrate is modulated to meet phase distribution of 2 pi, and at least one structural parameter of the moth eye mask in the thickness direction of the optical substrate is modulated to complete refractive index transition from the plurality of nano dielectric cylinders to the optical substrate. According to the invention, the problem of transmittance reduction caused by refractive index mismatch in a traditional optical super lens is solved, and the focusing efficiency of the optical super lens is effectively improved on the basis of not influencing the original phase distribution.

A flexural digital camera for mobile devices such as smartphones includes a lens having N > = 4 lens elements, an effective focal length (EFL), and f number f / #, an optical path flexing element (OPFE), and an image sensor having a sensor diagonal length SD. Some of the lenses may be super lenses or include super lens elements. In some cameras, a lens is located on the object side of the OPFE, 8 mmlt; eFLlt, EFLlt; 50 mm, SD / EFLgt; 0.4, f / # lt; and 2.75%. In some cameras, M is greater than or equal to 1 of the lens elements, the lens elements are super-lens elements, and O is equal to N-M of the lens elements, the lens elements are refractive lenses, 8 mmlt; eFLlt, EFLlt; 40 mm, SD / EFLgt; and 0.3.

The invention relates to the technical field of super-lens packaging, in particular to a super-lens LED packaging structure, a super-lens LED lamp panel and a backlight system. According to the technical scheme, the LED lamp comprises an LED support, an LED wafer and a super lens, a metal electrical connection frame is arranged in the LED support, and a mounting step is arranged on the top of the LED support; the LED wafer is fixed in the LED bracket; and the super lens is fixed on the mounting step through packaging glue. According to the invention, the ultra-thin design is realized by integrally packaging the super lens and the LED wafer, the light is accurately regulated and controlled by using the microstructure on the surface of the super lens, the light spot uniformity is improved, the LED consumption and the dependence on the optical film are obviously reduced, the system adaptability is enhanced by the flexible layout of the driving chip, and the reliability is improved and the service life is prolonged by the closed packaging structure. The ultrathin performance, the optical performance, the cost and the reliability are comprehensively optimized, and an innovative solution is provided for a backlight system with high cost performance and high performance.

The invention discloses a super-lens design method based on etching uniformity compensation and an optimization system thereof. The super-lens design method specifically comprises the following steps: S1, etching a wafer and establishing an etching rate space distribution model; S2, designing layout partitions and distributing compensation coefficients; s3, pre-compensating the size of the nano structure; s4, generating a final mask and executing etching; according to the method, the space size pre-compensation of the nano structure is actively performed in the mask design stage, and the phase deviation caused by non-uniform etching depth is counteracted by using the change of the effective refractive index of the nano unit, so that the high-performance super lens is obtained under the non-ideal process condition, and the limitation of the process physical limit is broken through.

The utility model relates to the technical field of super-structure lenses, and particularly discloses a fully-integrated polarization imaging device based on a polarization beam splitting super-lens. The fully-integrated polarization imaging device based on the polarization beam splitting superlens comprises a nanopillar array, a transparent medium substrate and an image sensor, a nanorod array is arranged on one side surface of the transparent medium substrate; the image sensor is arranged on the other side, far away from the nanorod array, of the transparent medium substrate; the image sensor is provided with at least two pixel areas; the light beams output from the nano-pillar array pass through the transparent medium substrate and then are split and focused to the pixel area. According to the utility model, the nanorod array, the transparent medium substrate and the image sensor are integrated together, so that the interference of an external light path is reduced, the imaging stability and reliability are improved, the structure is compact, and the size is small. The nanorod array can accurately control polarization and phase of light, high-resolution imaging is achieved, and the problems that an existing polarization system is low in integration degree, large in size and low in resolution are solved.

A lens system having reduced physical size. The lens system includes multiple metalenses, lenses with metasurfaces, that integrate the lens and the free space and compress them into multiple layers of metasurfaces, significantly reducing the overall volume and weight of the imaging system while increasing its efficiency. The lens system also provides for tools that can accurately model 3D multilayer metasurfaces, carry out inverse design to find the optimal and fault-tolerant structure, fabricate the metasurfaces with multi-project wafer service, assemble them with a 3D-printed holder, and characterize the performance of the resulting ultra-compact imaging system.

The utility model provides a super lens, a super lens array, a dodging system and a display module. The super lens provided by the utility model is used for receiving emitted light of a light source; the light source is a light-emitting diode (LED); the super lens comprises a first area located in the center and a second area located on the periphery. The first area is used for modulating a received light beam in a transmission mode; the second area is used for modulating the received light beam in a reflection mode; the light beam received by the second area is reflected back and forth for at least one time between the second area and a reflecting surface arranged for the second area, and finally the light beam reflected by the second area penetrates through the plane where the super lens is located from the outside of the effective area of the super lens; the light beam projected by the first area and the light beam reflected by the second area jointly form the light beam output by the super lens. According to the super lens, the illumination coverage angle of the super lens for light beams output by light sources such as LEDs can be enlarged, and meanwhile the light energy utilization rate can be increased.