289 results about "Superlens" patented technology

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.

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 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.

The invention belongs to the technical field of micro-nano optics. The invention provides a multi-focus off-axis super lens of a visible light wave band. The multi-focus off-axis super lens comprises a plurality of groups of off-axis single-focus sub super lens assemblies which are circularly arranged, wherein each group of off-axis single-focus sub super lens assemblies comprises a plurality of off-axis single-focus sub super lenses which are concentrically and annularly distributed; wherein the off-axis single-focus sub-super-lens comprises a micro-structure unit and a substrate unit, the micro-structure unit comprises a plurality of micro-structure columns which are uniformly arranged, and one end of each micro-structure column is arranged on the substrate unit. According to the embodiment of the invention, on the basis of a geometric phase modulation principle, through reasonable phase design and microstructure arrangement, the off-axis single-focus sub-super-lens has a designed focus position; through spatial multiplexing of the micro-structures of the multiple off-axis single-focus sub-super-lenses, one super-lens has the phase characteristics of the multiple off-axis single-focus sub-super-lenses, and the functions of the multiple off-axis single-focus sub-super-lenses are achieved on one super-lens.

The invention relates to the technical field of image processing, and discloses an infrared super-lens image quality enhancement method based on fusion of double-path decoding and physical perception prompt, which comprises the following steps: S1, generating a physical parameter prompt, acquiring geometric and optical characteristic parameters of an infrared super-lens, and converting the parameters into textualized prompt vectors; s2, constructing a data set; s3, cross-modal feature coding and fusion are carried out; and S4, carrying out double-path decoding and reconstruction. According to the infrared super-lens image quality enhancement method based on the fusion of the two-way decoding and the physical perception prompt, by introducing physical parameter prompt and cross-modal feature fusion, the imaging physical prior of an infrared super-lens is effectively fused into a network, so that a model can understand a degradation source and imaging constraints; and deep collaboration of visual information and physical attributes is realized in a feature extraction process. The design not only enhances the adaptability of the model to a complex imaging system, but also improves the interpretability and robustness of an enhancement result.

The invention discloses a super-lens element atomic structure reverse design method and electronic equipment, and relates to the field of super-lens element atomic structure design. The method comprises the following steps: extracting modal features of element atom structure images and phase spectrum data through a differential perception fusion module, and generating structure image side information and phase spectrum side information; on the basis, asymmetric association representation is constructed, a prompt factor is generated, and a prompt guide fusion feature is formed; and fusing asymmetric correlation representation, prompting and guiding fusion features, element atom structure images and phase spectrum data, generating cross-modal fusion features, and relieving alignment difficulty caused by modal isomerism. Then, semantic modeling and structure enhancement are carried out through a structure difference perception module, and enhanced fusion representation is obtained; and finally reconstructing the dimension and rearranging the space through a feature rearrangement inversion module, and synchronously outputting a predicted element atom structure image and phase spectrum data thereof, thereby realizing bimodal joint generation.

A display device includes: an image projector including an image forming device and a meta-lens module and configured to output image light formed by the image forming device; and a meta-waveguide configured to transfer the image light output from the image projector, to an observer's field of view, the meta-waveguide including waveguide element configured to totally reflect light inside, an input coupler including a plurality of first nanostructures forming a first phase gradient in a first direction and configured to couple the image light from the image projector to an inside of the waveguide element, and an output coupler including a plurality of second nanostructures forming a second phase gradient in a second direction different from the first direction and configured to output the light coupled to the inside of the waveguide element by the input coupler, to an outside of the waveguide element.

The invention relates to a linear laser device using a super-structure lens, which belongs to the field of lasers and comprises a VCSEL (Vertical Cavity Surface Emitting Laser) light source and the super-structure lens, the super-structure lens comprises a structure area and a protection area arranged around the structure area, the structure area is composed of a plurality of super-structure lens units, and each super-structure lens unit is composed of a substrate and a micro-nano structure layer arranged on the substrate. According to the linear laser device, linear laser emission can be realized without adding a collimating lens behind the divergent light source.

The invention discloses a vector vortex super lens for directional selective edge detection and an imaging system with the vector vortex super lens, and the vector vortex super lens comprises a substrate and a nano-structure unit on the substrate. The nano-structure units are arranged on the substrate according to specific phase distribution to form a nano-structure unit array; x-line polarized light carrying sample information passes through the vector vortex super lens to generate left-handed and right-handed emergent light, the two paths of emergent light are superposed to obtain an edge image carrying polarization information, and a vector edge detection function is realized. The vector vortex super lens provided by the invention has the edge extraction capability of dynamic adjustment as required, and can realize real-time directional edge detection only by rotating the polarization analyzer without other hardware modification or digital post-processing.

The invention provides a large-view-field continuous zooming super lens system and a design method thereof.The super lens system comprises an adjustable aperture, a first super lens, a second super lens and a driving mechanism which are sequentially arranged in the optical axis direction, and the rear surface of the first super lens is provided with a first super surface; the front surface of the second super-lens is correspondingly provided with a second super-surface facing the first super-surface, the adjustable aperture is configured to be capable of moving along the optical axis direction and adjustable in clear aperture, and the first super-lens and / or the second super-lens are / is configured to be capable of rotating around the optical axis. The distance between the adjustable aperture and the first super lens in the optical axis direction changes along with the change of the focal length, and the driving mechanism drives the adjustable aperture to move, adjusts the clear aperture of the adjustable aperture and drives the first super lens and / or the second super lens to rotate. According to the super-lens system, near-diffraction-limit imaging performance is achieved in the full-focus section, the edge imaging quality is high, and high-quality imaging is achieved.

The invention relates to the technical field of optical instruments, and provides a dimple telescope system based on a double-phase regulation and control super lens and a design method thereof, and the dimple telescope system comprises an objective lens, an eyepiece, a first super lens and a second super lens. The first super lens is arranged at the imaging plane position of the objective lens, is a local phase modulation type super lens and is used for implementing local phase modulation on an imaging area; and the second super lens is arranged at the pupil entrance plane position of the eyepiece, is a continuous phase type super lens, and is used for performing phase compensation and wavefront matching on the wavefront passing through the eyepiece. According to the invention, the double-phase collaborative design of the image plane local phase modulation superlens and the entrance pupil plane continuous phase compensation superlens is introduced into the Galileo telescope system, so that the unification of local high-resolution fovea imaging in the view field and the stability of the full-view-field image quality is realized on the premise of not changing the original optical path structure; and the aberration interference problem caused by local modulation of a single super lens is avoided.

An integrated semiconductor photodetector and its fabrication method are disclosed, relating to the field of integrated photodetector technology. This invention addresses the problems of existing detectors, such as limited functionality, insufficient responsivity, low integration, and difficulty in achieving synergistic miniaturization and high performance improvement. The method involves depositing a Cr conductive layer on the front side of a superlens substrate, uniformly coating the conductive layer surface with photoresist, pre-baking to prepare a dot-matrix mask pattern, developing and fixing followed by Ni deposition, and then stripping to obtain the Ni dot-matrix mask. ICP etching is used to remove the surface conductive layer, and a nanopillar array superlens structure is then fabricated. A photodetector layer is transferred to the back side of the substrate. Positive photoresist is spin-coated onto the substrate surface, pre-baking to prepare a source / drain electrode pattern, developing and fixing followed by sequential deposition of an adhesion layer metal and an electrode body metal layer. The metal layer in the non-electrode region is then stripped to obtain the metal electrode in contact with the photodetector layer, completing the detector fabrication. This invention can be applied to polarization imaging, space remote sensing, airborne detection, and optical communication.

The utility model relates to a Micro-LED collimation system based on a metasurface, and belongs to the field of optical elements, the Micro-LED collimation system based on the metasurface comprises a Micro-LED and the metasurface, the metasurface is composed of a medium optical filter and a collimation super lens, the collimation super lens is arranged at the downstream of the medium optical filter, and the collimation super lens is composed of a substrate, a microstructure and a protection layer. According to the invention, crosstalk between the Micro-LED adjacent arrays is reduced through the angle optical filter, light with a small angle is collected into the super lens, and stray light forming crosstalk can be filtered at the same time. And the light with a smaller angle can be further collimated through the super lens, so that a better result can be obtained.

The invention discloses an infrared super lens with a moth eye imitating anti-reflection nano structure. The moth-eye anti-reflection metasurface, the metasurface lens and the substrate are all made of silicon materials, and the moth-eye anti-reflection metasurface and the metasurface lens are micro-nano-scale arrays and are located on the two sides of the same substrate respectively. According to the invention, the metasurface is fully utilized to finely and efficiently modulate the phase, amplitude and other characteristics of light waves, the moth-eye metasurface changes the effective refractive index of the surface and reduces the reflectivity of incident light on the silicon surface, the metasurface lens enables the phase distribution to meet the spherical wavefront contour, efficient focusing of emergent beams is realized, and the light quality is improved. All micro-nano structures have the advantage of good thermal stability based on the same substrate material, and anti-reflection and focusing effects are achieved in an extremely thin scale.

This application provides a lightweight imaging probe and imaging device using a superlens, relating to the field of nonlinear optical imaging. By employing a split structure, a miniaturized imaging probe is achieved. During imaging, the imaging probe can be fixedly connected to the object being imaged. Excitation light is used to induce nonlinear optical effects within the object, thereby acquiring optical signals reflecting the internal structure of the object. Specifically, this application ensures that the laser is precisely focused on a specific position within the object corresponding to the scanning angle through a coordinated optical path design of the scanning galvanometer, scanning lens, and objective lens. This effectively triggers nonlinear optical effects while ensuring efficient acquisition of optical signals, thus providing a reliable technical foundation for high-resolution internal imaging. Furthermore, this application uses a superlens structure to construct the objective lens, avoiding the weight and weight associated with traditional optical objectives, thereby achieving a lightweight imaging probe, reducing the impact on the object being imaged, and obtaining more accurate images.

The application provides an orbital angular momentum and wavelength dual multiplexing polarization sensitive zooming super lens based on an orbital angular momentum and wavelength dual multiplexing polarization sensitive zooming super lens, characterized in that the super lens is composed of a silicon dioxide substrate layer and a silicon elliptical nanometer column medium layer. Through an orbital angular momentum topological charge number orthogonality and wavelength selectivity dual multiplexing mechanism, combined with a polarization sensitive design, a geometric phase regulation mechanism, the silicon elliptical nanometer column array is optimized through size and rotation angle, 0-2pi full phase coverage is realized, different orbital angular momentum modes, different wavelengths and left-handed / right-handed circularly polarized incident light are precisely demultiplexed in a 400-700nm visible light band, multi-channel independent zooming can be realized, and the focusing efficiency is greater than or equal to 65%. The application solves the defects of single zooming function, limited channel capacity and poor polarization compatibility of the traditional super lens, has compact structure and high integration, and can be widely applied to the fields of miniature imaging systems, optical communication, holographic display and the like.

The invention discloses a multilayer composite super-structure lens based on optical admittance theory optimization. The multilayer composite super-structure lens comprises a substrate, a transition film layer and a nanometer unit array. The substrate, the transition film layer and the nano unit array are sequentially arranged to form a multi-layer composite super-structure lens; the nanometer unit array is composed of a plurality of nanometer units. According to the multi-layer film structure enhanced transmission type super-structure lens, a nanometer unit is of an Al2O3 (medium refractive index), TiO2 (high refractive index) and MgF2 (low refractive index) laminated structure, a substrate is made of SiO2, and the double faces of the substrate are plated with MgF2 and H4 (titanium-lanthanum mixture) alternating film layers. The result shows that the transmissivity at the designed wavelength of 600nm reaches 89.31%, the transmissivity at the waveband of 500-700nm is higher than 74%, and the average transmissivity reaches 82.01%.

The invention discloses a high-performance infrared focal plane detector based on a super-structure lens effect, and belongs to the technical field of photoelectric detection. The core of the invention lies in providing a novel detector architecture which carries out integrated collaborative design on metal microcavity resonance and a super-structure lens condensation effect at a pixel level. Multi-physical field collaborative optimization is carried out on a quantum well material, a metal microcavity structure and an array period, so that periodically arranged detector pixels simultaneously have dual functions of microcavity resonance frequency selection and microlens wavefront regulation and control. On one hand, incident infrared light is converged through a super-structure lens effect induced by an array period, and the energy density of a light field is enhanced; on the other hand, incident light coupled into the metal microcavity can excite a resonance mode in the microcavity, and the active area light field is further locally strengthened. According to the invention, additional optical elements are not needed, the process is completely compatible with the existing focal plane technology, and a brand new technical approach is provided for high-performance narrow-band infrared detection.

This application provides a superlens-based optical communication system, comprising: a superlens; an optical communication element; and a distance between the superlens and the optical communication element along the optical path propagation direction greater than or equal to one focal length of the superlens; the superlens is used to modulate the received light beam and output the modulated light beam. This application enables the coupling operation of the light beam in an optical communication system using a single superlens, improving the coupling efficiency of the light beam, increasing the light energy utilization rate, and reducing the production cost and size of the optical communication system.

A camera including a lens with N ≥ 4 lens elements Li where the lens elements are divided into two groups G1 and G2, the camera having an effective focal length EFL, where a first lens element L1 faces an object side of the camera, an optical path folding element OPFE for folding a first optical path (OP1) to a second optical path (OP2), and an image sensor, wherein the camera is included in a camera module having a height (HM) measured along OP 1, G1 is located at an object side of the OPFE, a height of G1 is measured along OP1, G2 is located at an image side of the O-OPFE, 8mm<EFL<50mm, the camera is a folded camera, one of the lens elements is a metalens, the other lens elements are refractive, and the metalens element is in G1 thereby reducing HM. Related apparatus and methods are also described.

Provided is an image sensor including a pixel array including a plurality of imaging pixels and a plurality of autofocusing pixels, and a lens array including a plurality of micro lenses facing the plurality of imaging pixels, respectively, and one or more super lenses facing the plurality of autofocusing pixels, wherein each imaging pixel of the plurality of imaging pixels includes a first red meta-photodiode configured to selectively absorb light of a red wavelength band, a first green meta-photodiode configured to selectively absorb light of a green wavelength band, and a first blue meta-photodiode configured to selectively absorb light of a blue wavelength band.

The invention discloses a large-view-field polarization detection super lens based on an instrument matrix, and relates to the technical field of micro-nano optics and polarization detection. Comprising four sub-lens structures. A secondary phase distribution and global optimal phase screening strategy is adopted in the structural design, and a calibration method based on an instrument matrix is provided. According to the structure, different polarization components are spatially separated and focused, and polarization response of a system at different incident angles is accurately calibrated by using an instrument matrix, so that polarization detection in a large view field range of 120 degrees is realized. The invention has the characteristics of super compactness and high precision, and can be used for designing polarization detection, polarization imaging and the like in a large view field range.

This invention discloses a method for fabricating superlenses by electrochemical nanoimprinting on semiconductors. Based on a target phase distribution, structural design data for the superlens is generated. Using this design data, a metallized nanopillar array mold is fabricated. Then, in an electrolyte environment containing an oxidant, the mold is brought into contact with a semiconductor substrate and pressure is applied. The contact potential generated by the difference in work functions between the two substrates drives a localized electrochemical oxidation-dissolution reaction at the interface, thereby transferring the mold pattern to the surface of the semiconductor substrate with high fidelity, forming a superlens structure composed of a nanocavity array. This invention achieves short-process, reproducible structure transfer while meeting the requirements of superlens structural consistency and nanoscale processing accuracy, providing a feasible solution for the mass production of high-performance planar optical devices for imaging and communication applications.

A metalens and an optical system having the metalens. The metalens includes: a substrate capable of transmitting light in different wavelength bands; and a plurality of unit cells on the same surface of the substrate. The multiple unit cells are arranged in an array, the unit cells are regular hexagons and / or squares. A center position of each unit cell or each of the center position and vertex positions of each unit cell is provided with a nanostructure. The nanostructures are symmetrically arranged with respect to a first axis and a second axis respectively, and partial nanostructures obtained by dividing the nanostructures on the metalens along the first axis and the second axis are identical to each other. The first axis is perpendicular to the second axis, and both the first axis and the second axis are perpendicular to a height direction of the nanostructures.

The invention provides a manufacturing method of a mother board for preparing a titanium dioxide super lens through nanoimprinting, the mother board and a method for preparing the titanium dioxide super lens, and belongs to the technical field of micro-nano optical manufacturing. A titanium dioxide layer is prepared on the surface of a super lens substrate, a tackifying layer is prepared on the surface of the titanium dioxide layer, and N periodic marks for specifying the positions of N periodic elements are etched; a thermal nanoimprint method is adopted, an IPS working mold is obtained according to a mother board used for nanoimprint preparation of the titanium dioxide super lens, an anti-sticking layer is prepared on the surface of the IPS working mold, and then a chromium layer is prepared on the anti-sticking layer; and aligning the N periodic marks of the treated IPS working mold with the N periodic marks on the treated super lens substrate, and carrying out ultraviolet nano-imprinting to obtain the titanium dioxide super lens. The method mainly depends on the nanoimprint lithography technology with relatively low cost, so that the equipment investment and the processing cost are remarkably reduced.

An optical system (L0) includes at least one lens (G1-G5), and a meta-lens (G6, ML) having a lens surface (MLS) that generates a phase change in a wavefront of light passing through the meta-lens. A p

The invention discloses a high signal-to-noise ratio detection system and method based on superlens array aperture synthesis, the system comprises a superlens array and a registration module, the superlens array comprises a substrate and N sub-superlenses integrated on the substrate, and the N sub-superlenses are used for forming N sub-images on a camera target surface for the same target; and the registration module is used for registering the N sub-images, and superposing the registered N sub-images frame by frame to obtain an image after aperture synthesis. According to the detection system, the signal-to-noise ratio of a target can be improved, high-resolution detection is realized, and miniaturization and integration can also be realized.

The invention provides a refraction and super hybrid lens and a design method thereof, and the refraction and super hybrid lens comprises a refraction lens, a diaphragm and a refraction and super lens which are sequentially arranged from an object plane to an image plane along an optical axis. Both the refraction lens and the refraction and super lens bear positive focal power; the object side surface of the super-refractive lens comprises a super-transparent surface, the image side surface of the super-refractive lens comprises an aspheric surface, and the image side surface of the super-refractive lens protrudes towards the image surface. The embodiment of the invention provides a folding and super hybrid lens and a design method thereof so as to realize miniaturization and low cost.