48 results about "Optical refraction" patented technology

The invention relates to the technical field of image data processing, in particular to a water-soluble fertilizer dissolution rate visual measurement method and system, and the method comprises the steps: obtaining a sequence image of a dissolution process; performing multi-scale frequency domain analysis on the image, and calculating a scale convergence index by using the deviation between a local phase and a weighted average phase; a spectral sharpness factor is calculated according to the ratio of the high-frequency energy response to the low-frequency energy response; fusing the scale convergence index and the spectral sharpness factor to obtain a solid boundary probability; segmenting the particle region based on the probability and converting the particle region into physical mass, and differentiating a mass change sequence to obtain a dissolution rate. By fusing the phase consistency and the frequency domain energy distribution characteristics, the physical entity edge and the optical refraction halo are effectively distinguished, the refraction interference problem during high-concentration dissolution is solved, and the dissolution rate measurement accuracy is improved.

A camera module is provided. The camera module includes a lens assembly including at least one lens, an optical refractive member disposed at a path of light passing through at least a part of the at least one lens, an image sensor for converting the light received through the at least one lens and the optical refractive member into an electrical signal, a housing for accommodating the optical refractive member and the image sensor, a first driving unit for moving the image sensor within an internal space formed by the housing along a first direction in which a distance between the optical refractive member and the image sensor is changed, and a second driving unit for moving the image sensor along at least one of a second direction or a third direction which is different from the second direction with respect to the housing. The first driving unit may include a first carrier for transporting at least a part of the second driving unit which accommodates the image sensor along the first direction, and at least one first sphere interposed between the first carrier and the housing and disposed to move the first carrier along the first direction with respect to the housing.

The present invention relates to a windshield (10) for a display system, comprising: an outer pane (1) having an exterior surface (I) and an interior surface (II); and an inner pane (2) having an exterior surface (III) and an interior surface (IV), wherein the interior surface (II) of the outer pane (1) and the exterior surface (III) of the inner pane (2) are connected to one another by a thermoplastic intermediate layer (3) which has at least one display region (A, B) and which is provided with a reflective coating (20) at least in the display region (A, B), the reflective coating being disposed on the interior surface (IV) of the inner pane (2), and wherein the reflective coating (20) comprises, in the indicated order proceeding from the inner pane (2): - a first dielectric high-optical-refraction layer (21) having a refractive index of greater than or equal to 1.9, - a first dielectric low-optical-refraction layer (22) having a refractive index of less than or equal to 1.6 and an optical thickness of 5 nm to 40 nm, - a second dielectric high-optical-refraction layer (23) having a refractive index of greater than or equal to 2.2, an optical thickness of 45 nm to 100 nm and a geometric thickness of at most 35 nm, - a reflection-increasing layer (24) which is based on a metal or semiconductor and which can optionally be partially or completely oxidized, - a second low-optical-refraction layer (25) having a refractive index of less than or equal to 1.6.

A rare-earth doped optical fiber (active optical fiber) is presented that exhibits a thermal coefficient of optical refraction (dn / dT) of the core region that is reduced relative to the thermal coefficient of optical refraction (dn / dT) of the surrounding cladding. The reduction of the dn / dT of the core region has been found to reduce the impact of transverse mode instability (TMI) in the presence of high levels of pump power (or other conditions that can also increase the thermal load present in the core region). Specifically, it has been found that reducing the dn / dT of the core region relative to the dn / dT of the cladding by at least 10% is sufficient to extend the temperature range in which the active optical fiber is maintained in single mode operation. The reduction of the dn / dT can be provided by modifying the dopants introduced into the core region, where, for example, it is known to introduce boron into ytterbium doped optical fibers to reduce the dn / dT of the core region.

This invention provides a display panel and a display device. The display panel includes a first optical refractive layer and a second optical refractive layer. The first optical refractive layer includes multiple openings, and the second optical refractive layer fills the multiple openings. The refractive index of the second optical refractive layer is greater than that of the first optical refractive layer. Nanoparticles are also disposed within the second optical refractive layer. When light passes through, the first and second optical refractive layers effectively increase the light transmittance. Simultaneously, the nanoparticles further act on the light, thereby effectively improving the light extraction rate of the display panel and enhancing its display effect.

The invention relates to a lighting device (4) having a lighting beam path, comprising: a cylindrical lens (1); first, second, third and fourth optical elements (5.1 to 6.4) for shaping the illumination radiation in each case in a direction orthogonal to the optical axis (oA); and at least a first optical lens (7) and a second optical lens (8), each having a fixed focal length. The cylindrical lens (1) has an optical refractive effect (effective direction aR) in exactly one direction, whereby the illumination radiation is shaped in one direction perpendicular to the effective direction. Each optical element either has an optical refractive effect or influences the wavefront of the illumination radiation in exactly one direction (effective direction aR), whereby the illumination radiation is shaped in one direction perpendicular to the effective direction. The four optical elements are arranged behind the cylindrical lens, wherein the effective direction of the cylindrical lens and the effective direction of the successive optical elements are oriented orthogonally to each other. The invention also relates to a corresponding method.

This application discloses an underwater vehicle positioning method, apparatus, system, and underwater vehicle. The method includes: acquiring a target event stream collected by an event camera; determining an event point cloud whose event trigger frequencies match the target frequency based on the target event stream, and determining sub-pixel-level center coordinates based on the pixel coordinates corresponding to the event point cloud, wherein the target frequency is the flashing frequency of the guide light source set on the docking target corresponding to the underwater vehicle; mapping the sub-pixel-level center coordinates to a three-dimensional line-of-sight vector by performing refraction distortion correction processing on the sub-pixel-level center coordinates; and determining the target pose of the underwater vehicle based on the three-dimensional line-of-sight vector and the preset spatial coordinates corresponding to the guide light source on the docking target. This application solves the technical problem of low visual positioning accuracy caused by motion blur, overexposure, and optical refraction distortion in traditional frame cameras under underwater dynamic interference environments in related technologies.

The invention discloses a controllable visual stimulation system for a magnetic resonance environment. The system comprises a controllable stimulation source module, a magnetic compatible display module, a magnetic resonance imaging module and a data processing module, the controllable stimulation source module generates dynamic visual stimulation patterns through the computer control system and the projector, the dynamic visual stimulation patterns are projected to the display screen made of non-magnetic materials, and then various visual stimulation modes including plane images, stereo images and unshielded binocular independent visual stimulation are achieved through the cylindrical lens grating by means of optical refraction and parallax principles. The magnetic resonance imaging module is used for synchronously collecting brain imaging data in the experiment process, and the visual stimulation signals and the imaging data are stored and analyzed in real time through the data processing module. According to the invention, the binocular vision principle of the cylindrical lens grating is utilized, accurate vision input in a complex vision stimulation scene is realized, meanwhile, the problem of magnetic field interference of traditional display equipment in a magnetic resonance environment is avoided, and the imaging quality and the experiment safety are ensured.

An apparatus for monitoring a plasma process may include an electro-optical (EO) sensor module and an optical guide, the EO sensor module may be arranged in a plasma chamber configured to perform a semiconductor process for processing a substrate using plasma, the EO sensor module may include a non-conductive material having an optical refractive index changed by an electric field formed in the plasma chamber, the optical guide may form at least one internal path of a light, which may have an optical characteristic changed by the changed optical refractive index, between the EO sensor module and the plasma chamber.

The application discloses a one-dimensional photonic crystal refractive index sensor and a refractive index detection method. The one-dimensional photonic crystal refractive index sensor comprises a vertical coupling incident grating, a plurality of micro resonant cavities and a vertical coupling output grating. The micro resonant cavities are realized based on a strip waveguide, an air slit structure and a silicon-based triangular synapse. The vertical coupling incident grating, the plurality of micro resonant cavities and the vertical coupling output grating jointly constitute a one-dimensional photonic crystal. After an input optical signal passes through a beam splitter, the input optical signal passes through a specially designed one-dimensional photonic crystal, interacts with a liquid substance to be detected in the one-dimensional photonic crystal, and is then output. The application realizes an optical refractive index sensor with a one-dimensional photonic crystal, a slit waveguide and a synapse structure, and has the advantages of small size, low preparation cost and large-scale integration. The optical refractive index sensor is a basic element of an optical sensing chip, a bio-lab-on-chip and the like, and has a wide market prospect.

The invention discloses low-radiation anti-reflection coated glass for an automobile skylight and a preparation method of the low-radiation anti-reflection coated glass, and belongs to the technical field of vacuum magnetron sputtering coated glass. The coated glass comprises a glass substrate layer and five coating layers sequentially deposited on the surface of the glass substrate layer through a vacuum magnetron sputtering method, wherein the five coating layers sequentially comprise a first silicon nitride film layer, a second silicon oxide film layer, a third indium tin oxide film layer, a fourth silicon oxide film layer and a fifth zirconium oxide film layer from inside to outside; wherein the outer surface of the coating layer is in a 25 [mu] m < 2 > measurement area, the surface average roughness Ra is greater than 1.5 nm, and the root-mean-square roughness Rq is greater than 1.5 nm. The high-hardness and high-toughness zirconium oxide film layer is combined with the compact and stable silicon oxide film layer, and the optical refractive index of each film layer material is optimized, so that the reflection and transmission characteristics of visible light are effectively regulated and controlled, the wear resistance and chemical stability of the film layers are improved, and meanwhile, low radiation, low reflection and good temperable performance are considered.

The invention provides a method and a system for compositely manufacturing a micro-fluidic chip based on embedded direct writing and volume printing. The method comprises the following steps: preparing a photosensitive resin matrix with shear thinning characteristic and sacrificial ink; carrying out embedded direct-writing forming to construct a three-dimensional flow channel framework; calculating and modulating a light field, and generating the light field by adopting different algorithms according to the optical refractive index difference between the ink and the resin; performing photocuring on the chromatography volume to form a chip entity; and removing the sacrificial layer to obtain the micro-fluidic chip. The system integrates direct writing and volume printing modules and is coordinated by a control unit. According to the method, flow channel blockage is avoided through sacrificial ink, the inner wall smoothness is guaranteed through volume printing, multiple material systems are compatible through light field calculation, and the manufacturing quality efficiency is improved; the system realizes composite manufacturing and provides support for large-scale production and application of micro-fluidic chips.

A display device includes a substrate having a light emission area, a light emitting element layer including a light emitting element on the light emission area, and an sensing layer on the light emitting element layer and including a sensing electrode having a first opening overlapping the light emission area, a first refraction layer directly on the sensing electrode and having a second opening overlapping the light emission area, and a second refraction layer on the light emitting element layer and the first refraction layer, a first optical refractive index of the first refraction layer being less than a second optical refraction index of the second refraction layer.

The invention discloses a urea solution concentration automatic adjustment and control system, and the system comprises a multi-mode concentration detection module which detects the concentration of a urea solution in real time, and comprises an ultrasonic phase difference detection sub-module, an optical refraction detection sub-module, and a multi-mode information fusion and processing unit which is used for carrying out the fusion processing of the detection results of the ultrasonic phase difference detection sub-module and the optical refraction detection sub-module; the dynamic proportioning execution module is used for accurately preparing a urea solution according to the control instruction; the intelligent control unit is in signal connection with the multi-mode concentration detection module and the dynamic proportioning execution module; and a man-machine interaction and remote monitoring module. Through the multi-mode concentration detection module, two detection technologies of ultrasonic phase difference and optical refractive index are fused, and confidence evaluation and an adaptive weighted fusion algorithm are combined, so that the measurement deviation of a single sensor under a complex working condition is effectively overcome, and full-range, fuzzy-free and high-reliability concentration detection is realized.

An imaging lens assembly module includes a lens barrel, a catadioptric lens assembly, an imaging lens assembly, a first fixing element and a second fixing element. The lens barrel has a first relying surface and a second relying surface, which face towards an object side of the imaging lens assembly module. The catadioptric lens assembly relies on the first relying surface. The imaging lens assembly is disposed on an image side of the catadioptric lens assembly, and relies on the second relying surface. The first fixing element is for fixing the catadioptric lens assembly to the lens barrel. The second fixing element is for fixing the imaging lens assembly to the lens barrel. The catadioptric lens assembly is for processing at least twice internal reflections of an image light in the imaging lens assembly module, and for providing optical refractive power.

The invention relates to the field of eye protection table lamps, in particular to a 3D stereoscopic optical refraction eye protection table lamp structure which comprises a base, a bendable support is fixedly connected to the top end of the base, a polygonal lampshade is fixedly connected to the top end of the support, the front portion of the polygonal lampshade is wide, the rear portion of the polygonal lampshade is narrow, and a lamp body is arranged in the lampshade. The number of the trapezoid reflectors is matched with that of the edges of the polygonal lampshade, the trapezoid reflectors are parallel to the corresponding edges of the polygonal lampshade, and the ends of the trapezoid reflectors are rotationally connected to the inner side wall of the polygonal lampshade. A distance sensor and a plurality of trapezoidal reflectors are arranged, the distance parameters between the polygonal lampshade and an irradiation area are measured through the laser distance sensor, the overturning driving assembly drives the trapezoidal reflectors to overturn according to the distance parameters measured by the laser distance sensor, and the refraction angles of the trapezoidal reflectors are adjusted; light beams are prevented from being excessively concentrated or dispersed, so that eye fatigue can be reduced.

Optical structure with: Light sensors (630) arranged on a front side of a semiconductor substrate (510); an optical refractive layer (734) arranged on a back side of the semiconductor substrate (510), having a first refractive index and having planar distal surface parts and non-planar distal surface parts with random protrusions; a lattice structure (740) arranged on and in contact with the planar distal surface parts and having openings arranged over the non-planar distal surface parts; an optically transparent layer (770) extending vertically through the openings in the lattice structure (740), contacting the non-planar distal surface parts and having a second refractive index different from the first, thereby providing a refractive interface with the non-planar distal surface parts that refracts incident light in random directions; and an arrangement of masking structures (750) which are arranged outside of areas of the non-planar distal surface parts of the optical refractive layer (734) and have sidewalls which are arranged over and contact a respective part of a top surface of the grating structure (740), wherein the optically transparent layer (770) is arranged over the arrangement of masking structures (750).

A display panel and a display device are provided. The display panel includes a first optical refraction layer and a second optical refraction layer. The first optical refraction layer includes a plurality of openings. The second refraction layer is filled in the plurality of openings. A refractive index of the second optical refraction layer is greater than a refractive index of the first optical refraction layer. Furthermore, nanoparticles are further disposed in the second optical refraction layer. When light passes through, the first optical refraction layer and the second optical refraction layer can effectively improve transmittance rates of the light. Meanwhile, the nanoparticles can further act on the light, thereby effectively increasing a light extraction rate of the display panel and improving display effect of the display panel.

The invention relates to a depolarization compensator (1) for at least partially compensating for position-dependent variations in polarization (6) of a laser beam (4), comprising: a first compensation member (2) made of a birefringent material, the invention relates to a laser device (1) comprising a first compensation component (2) having a preferably planar beam entry surface (2a) for the entry of a laser beam (4) and a beam exit surface (2b) for the exit of the laser beam (4), the thickness (D (X, Y)) of the first compensation component (2) being varied in position between the beam entry surface (2a) and the beam exit surface (2b), and the thickness (D (X, Y)) of the first compensation component (2) being varied in position between the beam entry surface (2a) and the beam exit surface (2b). To at least partially compensate for a position-dependent change in the polarization (6) of the laser beam (4); and a second compensation member (3) that compensates for the light refraction effect of the first compensation member (2) on the laser beam (4) and does not have a birefringence effect on the laser beam (4). The invention also relates to an optical system having at least one such depolarization compensator (1).

This invention relates to the field of optical materials technology, providing an optical matching adhesive, a grating device, and a preparation method. By mass, it comprises the following components: 1-5 parts of UV initiator, 1-5 parts of thermosetting initiator, 15-30 parts of a first monomer, 25-35 parts of a second monomer, 25-40 parts of a third monomer, 1-3 parts of a coupling agent, 5-8 parts of a tackifier, and 1-2 parts of a leveling agent. The first monomer is a monofunctional acrylate monomer, the second monomer is a difunctional acrylate monomer, and the third monomer is a polyfunctional acrylate monomer. Advantages: Through the synergistic effect of material compatibility design, optical refractive index matching, rapid curing kinetics control, and interfacial chemical bonding, an optical matching adhesive layer is formed in the non-grating region. This layer is optically equivalent to glass, compatible and immiscible with H-PDLC materials, cures faster than the diffusion rate of H-PDLC materials, and exhibits reliable adhesion.

The invention relates to the field of medical instruments, in particular to a disposable light-transmitting and sound-transmitting pressure bra suitable for an operation. Comprising a brassiere body with both sound transmission and light transmission, the brassiere body is of a cuttable structure, soluble micro-channels distributed along a preset path are embedded in the brassiere body, the soluble micro-channels guide crack propagation during cutting, and the material strength recovery of the brassiere body within 30 minutes after cutting is larger than or equal to 80%; a latticed positioning mark is integrated on the surface of the bra main body, the latticed positioning mark is made of a material which is visible in ultrasonic imaging and does not generate artifacts, and the difference between the optical refractive index of the latticed positioning mark and the optical refractive index of a medical grade silica gel material is smaller than or equal to 0.01; and a humidity-responsive adhesive layer provided on the inner surface of the bra body. The fixing device solves the technical problems that a traditional fixing device cannot meet the requirements of sound transmission and light transmission at the same time, the problem of displacement in the breast surgery is solved, and a brand new intraoperative supporting platform is provided for the precise breast minimally invasive surgery.

The invention relates to a lighting device (4) with an illumination beam path comprising a cylindrical lens (1), a first, second, third, and fourth optical element (5.1 to 6.4) for shaping an illumination beam in a direction orthogonal to the optical axis (oA), and at least one first optical lens (7) and a second optical lens (8), each with a fixed focal length. The cylindrical lens (1) acts as an optical refractive element in exactly one direction (active direction aR), thereby shaping the illumination beam in a direction perpendicular to the active direction (aR). Each of the optical elements (5.1 to 6.4) acts as an optical refractive element in exactly one direction (active direction aR) or influences a wavefront of the illumination beam, thereby shaping the illumination beam in a direction perpendicular to the active direction (aR). The four optical elements (5.1 to 6.4) are arranged downstream of the cylindrical lens (1).4) arranged, wherein the active directions (aR) of the cylindrical lens (1) and the successive optical elements (5.1 to 6.4) are each orthogonal to each other. The illumination radiation is directed after the fourth optical element (6.4) by means of the first optical lens (7) onto the second optical lens (8). By action of the second optical lens (8), the illumination radiation is directed into a common focus (F). The usable length (RL) and width (B) of a light sheet generated by means of a lighting lens (3) can be adjusted independently of each other. The invention also relates to a corresponding method.

The application discloses a robot follow-up demonstration anti-interference system and method for a high-paint-mist environment, relates to the technical field of industrial automation control and robot demonstration, and comprises a multi-source heterogeneous data sensing module, a pneumatic-optical coupling frequency domain prediction module, a self-adaptive frequency domain decoupling control module and a robot execution module. The application synchronously collects spatial kinematics data sequences and spraying fluid mechanics process data sequences of a demonstration site in real time through the sensing module; the prediction module is used for forward calculation of an optical refraction distortion base frequency caused by a pneumatic vortex at the front end of a spray gun; then the decoupling control module is used for self-adaptive directional peeling of the spatial kinematics data in the frequency domain dimension in combination with the distortion base frequency, so as to generate a pure and clean reproduced track and hand over the track to the execution module to drive the robot to reproduce. The application accurately eliminates optical illusion noise caused by high paint mist, and meanwhile, retains the process micro-motion characteristics of an operator.

This invention discloses an optical antireflective film, a car window glass, and a vehicle. The optical antireflective film includes an antireflective dielectric film and a moth-eye film; the antireflective dielectric film includes n high-refractive-index layers and n-1 low-refractive-index layers, the high-refractive-index layers and low-refractive-index layers are staggered and stacked, and the two outermost layers are both high-refractive-index layers; the moth-eye film is disposed on the outer surface of one of the outermost high-refractive-index layers. This invention combines the antireflective dielectric film and the moth-eye film, and uses the structural support layer of the moth-eye film as the outermost low-refractive-index layer of the dielectric antireflective film for a unified optical refractive index design, which not only ensures the antireflective effect of the dielectric antireflective film, but also gives its outer surface anti-fogging, hydrophobic, and fingerprint-resistant effects.

This invention relates to the field of optical refractive index sensing technology, and discloses a biatomic lattice metasurface and a method for fabricating a refractive index sensor. Two cubic lattices are nested together to form a biatomic lattice. Symmetry breaking is achieved by applying a micro-perturbation in the y-direction to one sublattice, creating a resonant structure. This structure is then placed on a silicon-on-insulator substrate to form a biatomic lattice metasurface. The metasurface is then transferred from the silicon-on-insulator substrate to a target substrate with a refractive index matching that of the solution being measured using a water-floating method. This creates a symmetrical dielectric environment, suppressing the leakage of electric field energy to the high-refractive-index substrate, increasing the proportion of electric field energy in the environmental medium, and thus improving the refractive index sensing sensitivity.

An illumination device includes an illumination beam path having a cylindrical lens and four optical elements for shaping an illumination radiation in each case in a direction orthogonal to the optical axis, and first and second optical lenses, each having a fixed focal length. The cylindrical lens has an optically refractive effect in exactly one direction, which shapes the illumination radiation in a direction transversely to the active direction. Each of the optical elements, in exactly one direction, has an optically refractive effect or influences a wavefront of the illumination radiation that shapes the illumination radiation in a direction transversely to the active direction. The four optical elements are disposed downstream of the cylindrical lens, and the active directions of the cylindrical lens and of the successive optical elements are directed orthogonally to one another. The illumination radiation downstream of the fourth optical element is directed onto the second optical lens by the first optical lens and the second optical lens directs the illumination radiation into a common focus. A usable length and a width of a light sheet generated with the aid of an illumination objective can be set independently of one another.

Disclosed is an actuator for an optical refraction type camera module having a reflector, and an optical refraction type camera module including the same. The optical refraction type camera module actuator according to the present invention includes: a movable portion on which a lens barrel is mounted, a magnet attached to a side surface of the lens barrel; a fixed portion that houses the movable portion in a manner that allows translational movement in the optical axis direction, and a coil and a yoke disposed on a side surface in a manner that faces the magnet; and a ball rolling portion that guides translational movement of the movable portion with respect to the fixed portion in the optical axis direction between the movable portion and the fixed portion, the ball rolling portion being disposed in two regions opposite each other in a diagonal direction with respect to the center of the optical axis direction of the lens barrel, the center of the magnet and the center of the yoke being formed at different heights in a manner that an attractive force acts in the other diagonal direction in which the ball rolling portion is not disposed.

The invention relates to a fluid refractive index measuring device and a fluid refractive index measuring method, in particular to a compact fluid refractive index measuring system and a fluid refractive index measuring method, and solves the technical problems that the sensing sensitivity and the comprehensive performance evaluation index of an existing optical refractive index sensor are low, and the high-precision measurement requirement of the fluid refractive index is difficult to meet. According to the compact fluid refractive index measuring system provided by the invention, the refractive index is converted into spectral information by utilizing the high-Q-value metasurface based on the double-layer metasurface, and the interaction strength between the measuring light beam and the fluid to be measured is improved by virtue of the narrow linewidth and near-field enhancement characteristics, so that the measuring precision can be improved; by combining a miniaturized spectrometer, spectral information is converted into visual light intensity information, and the refractive index of the fluid to be measured is quickly obtained by analyzing and processing the light intensity information, so that the measurement process can be simplified, and the measurement efficiency can be improved. According to the fluid refractive index measurement method provided by the invention, an error term is introduced into spectral inversion, and accurate inversion of spectral information can be realized.

The application discloses a temperature gradient control forming method for thick-wall PEKK chromatographic column pipes and relates to the technical field of control forming methods, and comprises the following steps: S1, melt forming; S2, temperature gradient control; S3, crystallization behavior regulation; and S4, obtaining a target structure. Through non-contact buffering and weak cold setting, the cooling curves (temperature drop rates) of the inner, middle and outer three layers of the thick-wall pipe are highly coincident, the optical refraction boundary caused by the inner and outer crystallinity faults is avoided, the traditional cloud pattern or atomization phenomenon is significantly reduced or even completely eliminated, the pipe has excellent light transmittance under visible light, the crystal morphology and size of the material are uniform on the whole radial section through the gradient-controlled crystallization process, and the residual internal stress caused by the inconsistent shrinkage of the inner and outer layers is eliminated. When used as a chromatographic column pipe, the pipe can withstand extremely high fluid pressure without creep or radial deformation, and the yield of the product is greatly improved.