451 results about "Microlens" patented technology

The utility model discloses a lens for delaying eye axis growth by using a negative defocus technology, particularly relates to the field of optical spectacle lenses, and aims to solve the problems that myopia of children and adolescents in China is severe, low-age and severe, existing common methods include angle molding, defocus and foggy vision (point diffusion), and the prevention and control efficiency is declined due to the large use of the methods. According to the utility model, myopia can be better prevented and controlled, and the prevention and control efficiency is improved. A composite ring belt design is adopted, the defocusing amount of an aspheric micro lens in a composite ring belt structure is negative defocusing, and the range of the defocusing amount of the aspheric micro lens is-5.0 D-(-6.5 D). While clear vision correction is ensured in an optical central area, the defocusing amount of a ring belt outside the central area is in an asymptotically increasing trend, so that continuous defocusing is formed in a peripheral area, and the visual acuity is improved. And personalized compensation is carried out on the defocusing amount of the field angle to form a continuous myopia defocusing state, so that excessive increase of the ocular axis and the diopter is delayed, and the purpose of controlling myopia is achieved.

An image sensor includes a substrate the substrate including a plurality of unit pixels arranged in a direction parallel to a first direction; a first and second photodiode inside of the substrate in each of the plurality of unit pixels and separated from each other in a second direction, perpendicular to the first direction; and a device isolation film between the plurality of unit pixels. A pair of pixels side-by-side in a third direction, perpendicular to the first and second direction, among the plurality of unit pixels, share a microlens, and at least one of the plurality of unit pixels includes a light shielding film on the substrate. Accordingly, in the image sensor, while maintaining the existing photodiode forming process, the autofocusing function in a vertical direction may be supplemented, and further, performance of the image sensor may be improved.

The invention discloses a Shack-Hartmann wavefront detector centroid calculation method and related equipment, and relates to the field of optical measurement, and the method comprises the steps: obtaining a light spot array grayscale image, detecting the local maximum value of each light spot, and dividing sub-aperture image regions corresponding to micro lenses one by one according to the local maximum value; extracting a gray matrix of each sub-aperture image region, respectively determining one-dimensional regions of a light spot main lobe in row and column directions, and intersecting to obtain a main lobe region; a main lobe area is deducted from the sub-aperture image area to form a threshold calculation area, and the maximum gray value of the threshold calculation area is selected as a threshold; and performing threshold reduction on pixels in the sub-aperture image area, setting a negative value to zero, and calculating the position of the mass center of the light spot based on the processed image. According to the method, sub-aperture adaptive threshold and local background removal are realized, weak light spot information loss caused by a unified threshold is avoided, and the precision of centroid calculation and wavefront restoration is improved.

A photodetector according to one embodiment of the present disclosure includes: a semiconductor substrate having a first surface and a second surface opposed to each other, and including a plurality of pixels and a photoelectric converter, the plurality of pixels arranged in a matrix, and the photoelectric converter that is formed for each of the pixels to be embedded in the semiconductor substrate, and generates an electric charge corresponding to an amount of received light by photoelectric conversion; a microlens disposed on side of the first surface to extend over adjacent pixels of the plurality of pixels; and a plurality of scatterers having different indices, the plurality of scatterers stacked in a collection optical path of the microlens.

The invention provides an image sensor pixel unit with a polarization response characteristic light trapping structure and a preparation method of the image sensor pixel unit. The image sensor pixel unit comprises a semiconductor substrate, a multi-layer structure arranged on the substrate and a polarization response unit. The multi-layer structure comprises an anti-reflection layer, a filling and leveling layer and a micro-lens layer. The polarization response unit adopts an all-dielectric sub-wavelength grating based on a backscattering technology, and the polarization response unit and the deep trench isolation structure are synchronously formed by adopting the same process, so that photoelectric isolation between pixels is realized, and a polarization selection function is also realized. The anti-reflection layer is a multi-layer dielectric film stack, and interface reflection is effectively restrained. By optimizing the design of a polarization selection-transmission-convergence cooperative structure, polarization selection and light enhancement functions are integrated, an all-dielectric material system is adopted to be completely compatible with a CMOS (complementary metal oxide semiconductor) process, and quantum efficiency is remarkably improved while high-efficiency polarization detection is realized.

The utility model discloses a prism structure, a visual angle expanding film, a backlight module and a display device, and relates to the technical field of optical films. The prism structure comprises a plurality of first prism parts and a plurality of second prism parts, the top of the second prism part is connected with the bottoms of the first prism parts; wherein the cross sections of the first prism parts are isosceles right triangles, the cross sections of the second prism parts are isosceles trapezoids, and the top width of the second prism parts is the total bottom width of the first prism parts. According to the utility model, the problems that the 1 / 2 light intensity range in the horizontal direction of a general display is within + / -50 degrees, and the 1 / 2 light intensity range in the vertical direction of the general display is within + / -35 degrees due to a single prism sheet, or a diffusion film and prism sheet bonding (DOP) / micro lens film and prism sheet bonding (MOP) and other structures with single prism layers in the current brightness enhancement film technology are solved; if a double-layer prism framework optical film scheme is used, the 1 / 2 light intensity range in the horizontal direction and the 1 / 2 light intensity range in the vertical direction are both lower than + / -35 degrees.

The utility model discloses bionic compound eye type mine displacement monitoring special equipment, which relates to the technical field of mine safety monitoring, and comprises a shell, the shell is composed of a plurality of groups of sensing surfaces and a plurality of groups of supporting nodes, a three-ring optical system is integrated on each sensing surface, and the bottom of the shell is provided with a tenon-and-mortise quick-release interface matched with the sensing surfaces for use. The shell is in the shape of a truncated icosahedron hemisphere, the sensing face is in the shape of a regular hexagon, and the supporting nodes are in the shape of a regular pentagon. According to the utility model, the horizontal field of view is expanded to 270 degrees and the vertical field of view reaches 120 degrees through the eccentric prisms, the 4 * 4 microprism aberration correction array dynamically compensates wide-angle distortion, the microlenses employ gradient refraction design to correct spherical aberration and field curvature, light is focused into 1.2 [mu] m light spots which are matched with the photonic crystal waveguide mode field diameter, and the adjacent microlens fields of view overlap 40%. The FPGA is fused with multi-channel data, so that the signal-to-noise ratio is increased to 40dB +, accurate acquisition and processing of light are ensured, high-precision three-dimensional deformation monitoring is realized, and fine change conditions of mine rock strata can be captured.

A spectacle lens design includes an aperture and at least two ring-shaped focusing structures surrounding the aperture. The aperture has a dioptric power, and the ring-shaped focusing structures surrounding the aperture provide an additional power relative to the dioptric power of the aperture. A ring-shaped diffuser is arranged between neighboring ring-shaped focusing structures. Neighboring ring-shaped focusing structures can adjoin each other with a ring-shaped contact line between them forming the ring-shaped diffuser. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures provides a ring shaped focal line. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures consists of lenslets that adjoin each other so as to form a ring of lenslets and provides a plurality of foci along a ring shaped line.

The invention discloses a super-resolution micro lens and a preparation method thereof. The lens comprises a photoresist spherical micro lens and a mixed substrate plane lens which are sequentially arranged from top to bottom. The specific preparation method comprises the following steps: S1, preparing a photoresist cylinder on a quartz substrate; s2, reflowing the photoresist cylinder into a micron lens by using a photoresist reflowing process; s3, preparing a mixed substrate plane lens on the surface of the to-be-detected sample; and S4, transferring the micron lens to the surface of the mixed substrate plane lens. By changing the thickness of the mixed substrate plane lens, adjustment of the amplification coefficient and the numerical aperture can be realized, and compared with a micro lens without a mixed substrate, the micro lens has higher imaging resolution. The method has a wide prospect in the technical field of optical imaging.

An image sensor includes a substrate the substrate including a plurality of unit pixels arranged in a direction parallel to a first direction; a first and second photodiode inside of the substrate in each of the plurality of unit pixels and separated from each other in a second direction, perpendicular to the first direction; and a device isolation film between the plurality of unit pixels. A pair of pixels side-by-side in a third direction, perpendicular to the first and second direction, among the plurality of unit pixels, share a microlens, and at least one of the plurality of unit pixels includes a light shielding film on the substrate. Accordingly, in the image sensor, while maintaining the existing photodiode forming process, the autofocusing function in a vertical direction may be supplemented, and further, performance of the image sensor may be improved.

An image sensor includes a substrate including a first region and a second region disposed in a periphery of the first region. The first region includes a plurality of unit pixels and a color filter structure, and the second region includes a dummy structure including a second color filter and a plurality of dummy lenses on the second color filter. The color filter structure includes a first extension portion extending in a first direction and a second extension portion extending in a second direction, and the dummy structure includes a third extension portion extending in the first direction and a fourth extension portion extending in the second direction. A first micro-lens, a second micro-lens, and a third micro-lens are in a first corner portion, and a first dummy lens, a second dummy lens, and a third dummy lens are in the second corner portion.

The invention provides a preparation method and a structure of a waveguide side micro lens. The preparation method comprises the following steps: providing an optical waveguide block; forming an optical lens groove in the optical waveguide block; forming an anti-reflection layer to cover the optical waveguide block and the optical lens groove; forming an optical lens material above the optical waveguide block and filling the optical lens groove; removing a portion of the anti-reflection layer and the optical lens material to define a micro-lens preliminary structure; and performing a reflow process on the micro-lens preliminary structure to form a micro-lens.

The present application relates to the technical field of defect detection, in particular to a polypropylene film defect detection method, device and system. A polypropylene film multi-row pixel point fringe image is obtained and stored in a row-level buffer, and is processed by frequency domain and signal analysis to obtain a refractive phase diagram, a fringe density diagram and a transmittance diagram; a crystal point defect forms an optical micro-lens effect, and has a high-frequency local frequency mutation on the fringe image; the fringe density diagram is filtered and compared to obtain a micro-lens distortion diagram, thereby improving the sensitivity of the defect detection; a dynamic gain coefficient is calculated by using a low-frequency density diagram and a refractive phase diagram data dynamic response relationship, and an anti-shake phase diagram is corrected by modifying the refractive phase diagram; a target row phase curvature diagram is calculated by analyzing the difference between different row anti-shake phase diagrams, thereby revealing the bending condition of the film surface; finally, the target row transmittance diagram, the phase curvature diagram and the micro-lens distortion diagram are fused to detect defects, thereby improving the detection accuracy and comprehensiveness.

The HMD comprises a head-mountable frame and an optical projection assembly supported by the frame. The optical projection assembly comprises a microdisplay supported by the frame. The microdisplay has a two-dimensional array of pixels. Each pixel contains a group of emitters configured to emit image light. The microdisplay further comprises a projection optical system configured to receive image light from each group of emitters in the array of pixels at the entrance pupil and project the focused image light from the exit pupil. The microdisplay further comprises a two-dimensional array of optical collimators positioned between the microdisplay and the projection optical system. The steerable optical collimators are further configured to redirect the emission profiles of the corresponding groups of emitters toward the center of the entrance pupil of the projection optical system.

The application provides an image sensor and a manufacturing method thereof. The image sensor comprises a substrate, a color layer, a glue layer and a lens structure which are sequentially stacked. The color layer comprises a plurality of color structures. The image sensor comprises a barrier structure which at least penetrates the glue layer. The barrier structure is spaced apart from the plurality of color structures. That is, by arranging the barrier structure which at least penetrates the glue layer and is spaced apart from the plurality of color structures, the light is only propagated in each color structure and the corresponding microlens. The material of the barrier structure comprises a low refractive index material and / or a metal material. The low refractive index material or the metal material can block the light from entering the adjacent microlens, reduce the light crosstalk between the plurality of microlenses, improve the performance of the image sensor, and finally improve the imaging quality.

The application relates to an improved cage type light field imaging system and a debugging method, and belongs to the technical field of light field imaging. The system comprises a main lens for collecting light spots on an object plane and imaging light emitted by the light spots onto a microlens; the microlens is used for separating the light collected by the main lens into light beams in different directions and imaging the light beams onto a virtual image plane; a relay lens is used for twice imaging the light beams in different directions onto different pixels of a CCD detector of a camera; the relay lens comprises a first lens and a second lens, the focal lengths of the first lens and the second lens are both positive, the focal length of the first lens is smaller than that of the second lens, and the magnification of the relay lens is greater than 1:1. During the debugging process of the system, parallel light beams are arranged in front of the microlens, and the parallel light beams are vertically injected into the microlens to determine the position of the microlens. The system is not affected by the vignetting and distortion generated by the relay lens, and the debugging method improves the positioning accuracy of the microlens.

The utility model relates to the technical field of lenses, in particular to a spherical lens and cylindrical lens double-control fusion lens, which comprises a lens body and is characterized in that the lens body comprises a base layer I, and an anti-reflection layer, an ultraviolet-proof layer, an impact-resistant layer, a photochromic layer and a stain-resistant layer are arranged on the surface of the lens body. An anti-reflection layer is fixedly adhered to one side of the base layer I through a resin adhesive, and an ultraviolet-proof layer is adhered to the other side of the anti-reflection layer through the resin adhesive. According to the scheme, the functionality is remarkably improved through the multi-layer composite structure design (the anti-reflection layer, the ultraviolet-proof layer, the anti-impact layer and the like), in addition, the micro lenses of the first base layer and the second base layer are distributed in a staggered mode by rotating by 30 degrees, the one-person two-mirror alternate wearing mechanism (alternating every 2-4 weeks) is combined, fatigue of retina cells caused by fixed stimulation is avoided through dynamic out-of-focus stimulation, and the anti-fatigue performance of the retina cells is improved. Meanwhile, alternate recovery is promoted, so that myopia development is intervened more scientifically.

A quantum-dot light conversion film, a preparation method and an application thereof and an anti-ultraviolet blue-free yellow light for chip manufacturing are provided. The preparation method includes: (1) mixing a quantum-dot concentrate with an acrylic monomer, then adding high polymer for secondary mixing, to obtain a polymer; (2) after mixing the polymer and nanoparticles, adding additives for dispersion to obtain a light conversion liquid resin; and (3) coating and curing the light conversion liquid resin to obtain a quantum-dot light conversion film. The light conversion film has high light conversion efficiency, adjustable emission peak position and narrow half peak width. Its surface forms a tightly arranged high refractive index microlens structure. When the light reaches the microlens array, as the light output surface is a lens structure and the refractive index is improved, more light is emitted in the positive direction, thereby effectively improving the light output rate.

Disclosed herein are techniques for micro-light emitting diodes (micro-LEDs). According to certain embodiments, a micro-LED device includes a micro-LED comprising a semiconductor mesa structure configured to emit light, a spacer layer on the micro-LED, and a micro-lens on the spacer layer and configured to extract and collimate the light emitted by the micro-LED, where a thickness of the spacer layer is selected such that a focal point of the micro-lens is at a front surface of the semiconductor mesa structure.

A display device according to an embodiment of the present specification may include: a substrate having a notch and including a display area including a plurality of sub-pixels and a non-display area around the display area; a plurality of transistors disposed on the substrate and including a gate electrode, a source electrode, and a drain electrode; a display panel including a light emitting portion disposed on the plurality of transistors and including an anode electrode, a cathode electrode, and a light emitting layer between the anode electrode and the cathode electrode; and a microlens disposed on the light emitting area of the sub-pixel, in which a pad portion and a link portion may be disposed in the non-display area, and a plurality of data lines may be alternately disposed in the link portion, in which some of the data lines are formed on different layers between which an insulating layer is disposed.

To solve various technical problems in a display panel.SOLUTION: According to an exemplary embodiment of the present specification, a display device includes a substrate including a display area including a plurality of pixels and a transmissive area between adjacent pixels and a non-display area around the display area, a thin film transistor disposed on the substrate, a first protective layer on the thin film transistor, a connection electrode electrically connected to the thin film transistor on the first protective layer, a second protective layer on the connection electrode, a light emitting part on the second protective layer, and a first microlens on the light emitting part, wherein the first microlens is disposed in the transmissive area.SELECTED DRAWING: Figure 1

A method of forming a semiconductor package is provided. The method includes forming a micro lens recessed from the top surface of a substrate. A concave area is formed between the surface of the micro lens and the top surface of the substrate. The method includes depositing a first dielectric material that fills a portion of the concave area using a spin coating process. The method includes depositing a second dielectric material that fills the remainder of the concave area and covers the top surface of the substrate using a chemical vapor deposition process. The method includes planarizing the second dielectric material. The method includes forming a bonding layer on the planarized second dielectric material and over the top surface of the substrate. The method includes bonding a semiconductor wafer to the substrate via the bonding layer.

The invention relates to a shimmering powder film and a manufacturing method thereof and an acrylic product, the shimmering powder film comprises a micro-optical functional layer, a reflecting layer, a protective layer, an adhesive layer and a release film, the micro-optical functional layer comprises a base material layer and a microstructure layer connected with the base material layer, and the microstructure layer is formed by imprinting a plurality of micro-lenses on UV light-cured resin; the reflecting layer comprises a resin carrier layer and a plurality of shimmering powder particles, the resin carrier layer is connected with the side, away from the base material layer, of the microstructure layer, and the shimmering powder particles are directionally arranged on the resin carrier layer; the protective layer is connected with one side, away from the microstructure layer, of the substrate layer; one side of the adhesive layer is connected with one side, far away from the substrate layer, of the reflecting layer, and the other side is connected with the release film; according to the shimmering powder film, ambient light is converged to the surfaces of the shimmering powder particles through the micro lenses, reflected light passes through the micro lenses twice from the surfaces of the shimmering powder particles to be amplified and scattered, strong flash beam-shaped scattering is formed, the brightness is remarkably improved, the relatively strong flickering feeling is achieved, and the visual attraction is improved; the manufacturing method of the shimmering powder film is simple and easy to control.

An organic light emitting diode display device includes a substrate having a plurality of subpixels. The device includes an overcoat layer on the substrate. The device includes a light emitting diode in each of the plurality of on the overcoat layer. In some embodiments, a top surface of the overcoat layer in adjacent two of the plurality of subpixels includes a plurality of microlenses having different rotation angles. The top surface of the overcoat layer between the adjacent two of the plurality of subpixels includes a slit pattern corresponding to the rotation angles of the plurality of microlenses.

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.

To provide a photosensitive resin composition capable of forming a cured product which hardly becomes cloudy even in a high-temperature and high-humidity environment and can maintain high transmittance, a cured product obtained by curing the photosensitive resin composition, a cured film or a microlens composed of the cured product, and an image display device including the cured product or the microlens.SOLUTION: The photosensitive resin composition contains (A) an alkali-soluble resin, (B) a photopolymerizable compound and (C) a photopolymerization initiator, wherein the alkali-soluble resin (A) is a reaction product of a bisarene fluorene compound (A1), an ethylenically unsaturated group-containing monomer (A2) and an acid anhydride (A3), and the acid anhydride (A3) contains two or more compounds selected from compounds represented by the following general formulae (A3-1) to (A3-3).SELECTED DRAWING: None

The utility model relates to the technical field of micro-lens coupling, in particular to a micro-lens coupling device which comprises an adjusting table, a turnover coupling mechanism is arranged at the top of the adjusting table and comprises a clamping table arranged on the surface of the adjusting table, a hidden groove is formed in the left side of the clamping table, and a turnover plate is hinged to the inner side wall of the hidden groove. A fixing plate is fixedly connected to the inner side wall of the overturning plate, a sliding seat is slidably connected to the interior of the fixing plate, an arc-shaped groove is formed in the inner side of the sliding seat, the outer side wall of the sliding seat is sleeved with a buffer spring, the buffer spring is fixedly connected to the back side of the fixing plate, and an electric telescopic rod is fixedly connected to the back side of the fixing plate; according to the utility model, the sliding seat is accommodated through the hidden groove, so that parts such as the sliding seat are prevented from influencing light path focusing, the pressure is dispersed more uniformly by utilizing the matching of the extrusion block and the fixed plate during coupling, and the pressure of the electric telescopic rod is buffered, so that the damage of the optical fiber and the micro lens caused by overlarge pressure is avoided.

The application discloses a PIN type back incidence germanium-silicon photodiode based on inductance peaking, and the photodiode structure sequentially comprises a back incidence area, an absorption area and a collection area from top to bottom; the back incidence area comprises a silicon substrate and silicon microlenses formed by etching on the back surface of the silicon substrate; the absorption area comprises a doped area and a germanium absorption layer, the built-in electric field is formed by P-type and N-type doping of the doped area, and the germanium absorption layer is used for absorbing incident photons and generating photo-generated carriers; the collection area comprises a self-alignment resistance layer, an interlayer dielectric layer, a coplanar waveguide electrode and a metal bump, and the geometric parameters of the coplanar waveguide electrode are optimized to introduce a compensation inductance L p The inductance peaking is realized, so that the bandwidth of the photodiode is optimized; the metal bump is arranged on the surface of the coplanar waveguide electrode to realize flip-chip bonding of the photodiode and an external circuit. p The bandwidth of the device can be significantly improved under the premise of ensuring high responsivity and low dark current.

The embodiment of the invention provides a solid-state imaging device with improved characteristics. A solid-state imaging device according to an embodiment of the present invention is provided with: a plurality of pixels provided on a substrate and arranged in a first direction and a second direction parallel to the surface of the substrate and intersecting each other; and a plurality of microlenses provided above the plurality of pixels, each of the plurality of microlenses having a semi-cylindrical or semi-elliptic cylindrical structure extending in the first direction.

The present document discloses an optofluidic device for receiving a liquid and measuring a light signal comprising: at least one optical fiber; and a capillary tube for receiving a portion of the at least one optical fiber, and wherein the at least one optical fiber is inserted via a borehole in a wall of the capillary tube. A method of fabrication of the optofluidic device is also disclosed comprising the steps of: generating femtosecond laser pulses; focusing said laser pulses onto a predetermined capillary tube wall depth; controlling the position and intensity of said femtosecond laser pulses to induce a localized pattern on capillary tube wall; placing the capillary tube under wet-etching to create a borehole across the capillary tube wall and in the modified location; arranging the at least one lensed optical fiber in the borehole. Alternatively, a refractive microlens is laser-machined inside the capillary wall of the optofluidic device to focus light from the optical fiber inside the capillary. It is also disclosed a method of measuring light signals from a liquid using the optofluidic device.