703 results about "Light wave" patented technology

The invention relates to the technical field of image processing, and discloses an image correction method and system for binocular diffraction AR intelligent glasses. The method comprises the following steps: calculating a dispersion response parameter of a diffractive optical element in the AR glasses in a visible light wave band; respectively carrying out dispersion distortion detection on the left eye image and the right eye image in the AR glasses to obtain a left eye dispersion distortion feature and a right eye dispersion distortion feature; interpupillary distance change data of a user is obtained, effective aperture offset calculation is carried out on the diffractive optical element, and interpupillary distance compensation parameters are obtained; performing coupling calculation on the left eye dispersion distortion feature, the right eye dispersion distortion feature and the interpupillary distance compensation parameter to obtain a binocular dispersion correction matrix; and performing dispersion compensation on the left eye image and the right eye image to obtain a dispersion correction image, and outputting the dispersion correction image to a display module of the AR glasses. The method can respond to the pupil distance change of the user in real time, automatically adjust dispersion correction parameters, realize accurate and comprehensive dispersion correction, and ensure the stability of dispersion correction performance.

The invention relates to the technical field of chip preparation, and provides a chip based on an annular photonic crystal and a preparation method thereof. The preparation method comprises the following steps: growing a nucleating layer on a substrate; growing a superlattice structure on one side, away from the substrate, of the nucleating layer; sequentially growing an n-type coating layer, an n-type waveguide layer, a quantum well and a p-type electron blocking layer on one side, deviating from the nucleating layer, of the superlattice structure; etching a plurality of annular cavities on the p-type electron barrier layer to form an annular photonic crystal; growing a p-type extension contact layer on one side, deviating from the quantum well, of the p-type electron blocking layer; and carrying out in-situ annealing treatment. According to the preparation method, the directivity of the photonic band gap can be effectively adjusted, uniform light waves in all directions on the side face can be formed, so that leakage of laser from a non-light-emitting area on the side face is restrained, the light emitting efficiency is improved, the annular photonic crystals are periodically distributed, and the light beam quality is effectively guaranteed.

A semiconductor device inspection method includes: selecting, for a semiconductor device including at least one layer, a target layer on which inspection and measurement are to be performed; selecting a material to fill a hole region formed inside the semiconductor device; conducting a simulation for an optical inspection and a measurement for the semiconductor device; selecting, based on the simulation, a wavelength band of light for the optical inspection and the measurement; and detecting, through the light at the selected wavelength, a lower portion of the semiconductor device and a defect of the semiconductor device. A refractive index of the material filling the inside of the hole region is greater than a refractive index of a molding layer surrounding the outside of the hole region.

The invention provides an electro-optical modulator and a modulation method thereof, the electro-optical modulator comprises a substrate, a buried oxide layer and a lithium niobate waveguide layer are sequentially stacked on the substrate, and the lithium niobate waveguide layer comprises a first optical waveguide and a second optical waveguide; the electrode layer comprises a composite traveling wave electrode and a direct-current electrode, and the direct-current electrode is arranged on one side, in the signal transmission direction, of the composite traveling wave electrode; wherein the composite traveling wave electrode comprises a metal electrode and a polymer electrode, the metal electrode is embedded into the buried oxide layer, the polymer electrode is arranged on the surface of the buried oxide layer, and the composite traveling wave electrode is arranged between the first optical waveguide and the second optical waveguide and arranged on the side faces of the first optical waveguide and the second optical waveguide respectively; wherein the direct current electrode is arranged between the first optical waveguide and the second optical waveguide. The electro-optical modulator is high in electro-optical conversion efficiency, the plasma effect caused by light field coupling is effectively avoided, and the light loss of the device is remarkably reduced.

The invention discloses a dynamic tunable zero-level electro-optical wave plate system, a device and a preparation method, and belongs to the technical field of optical devices. The invention provides a dynamic tunable zero-order electro-optical wave plate system, and the system comprises a zero-order electro-optical wave plate device which comprises a wave plate substrate made of an electro-optical crystal of a non-centrosymmetric structure, and an electrode disposed on the wave plate substrate; the output end of the adjustable voltage source is electrically connected with the electrode; wherein the adjustable voltage source is configured to be capable of outputting a half-wave working voltage corresponding to a target working wavelength, so that the zero-order electro-optical wave plate device works at the target working wavelength as a half-wave plate. According to the invention, self-adaptive matching of a single device to a plurality of working wavelengths is realized, the problem that the working wavelength of the device is single due to material dispersion is solved, and meanwhile, the processing difficulty of an ultrathin structure required by a specific wave band is avoided.

The invention belongs to the technical field of photovoltaic modules, and relates to a photovoltaic module, a preparation method thereof and a photovoltaic system, and the photovoltaic module comprises a battery piece layer which comprises a plurality of battery pieces which are connected with one another; the back surface of the battery piece layer comprises a coating layer, a grid line, a first adhesive film layer and a first cover plate which are stacked in sequence; a hollow reflective material layer is also arranged between the coating layer and the first adhesive film layer, the average reflectivity of the reflective material layer in a visible light wave band is greater than or equal to 30%, and the coverage area of the reflective material layer in the back surface of the battery piece layer is less than or equal to 70%. The reflective material layer is additionally arranged on the back of the photovoltaic module, so that the double-sided power generation capability is considered while the back color difference is effectively eliminated, and the photovoltaic module is particularly suitable for distributed application scenes.

The invention relates to a high-resolution wavefront measurement method and device for a complex light field, electronic equipment and a storage medium, and the method comprises the steps: obtaining an observation image representing the to-be-measured wavefront intensity distribution based on to-be-measured light waves passing through a scattering sheet; obtaining initial complex amplitude space distribution corresponding to the wavefront to be measured based on the observation image; and inputting the initial complex amplitude space distribution and the observation image into a target function, taking the complex amplitude space distribution under the condition that the numerical value of the target function is minimum as the complex amplitude space distribution corresponding to the wavefront to be measured, and performing wavefront inversion by minimizing the target function to obtain the wavefront to be measured. The objective function comprises a data fidelity term, a spatial smoothness constraint term and a spatial spectrum bandwidth constraint term of the wavefront to be measured. And for a complex light field with strong aberration, turbulent flow or high-order singular points, the high-resolution wavefront is quickly reconstructed. Object information recording and imaging can be supported under the defocus condition, and the method is further suitable for application requirements of rapid and high-throughput detection and the like.

Polarization BRDF characteristic measuring device and method, belong to optical measurement technical field, the present application is to solve the existing BRDF or polarization BRDF measurement slow, low efficiency problem of measurement.The scheme of the present application: the laser light source at the second focal point emits laser light vertically through the circularly polarized light generating system and the polarizing system, the circularly polarized light generating system converts the laser light emitted by the laser light source into circularly polarized light, the polarizing system quantitatively changes the polarization state of the circularly polarized light to form the measuring incident light, the incident light is transmitted through the transmission light of the half mirror, and is reflected by the ellipsoidal mirror to the surface of the sample to be measured at the first focal point, the reflected light wave of the surface of the sample to be measured is reflected again by the inner surface of the ellipsoidal mirror, and is transmitted to the second focal point direction and is reflected by the half mirror, and the reflected light wave is converged to the third focal point of the measuring system through the polarizing system, the polarizing system is adjusted with the polarizing system, and the polarization BRDF characteristic of the sample to be measured is measured.

Provided is an optical control element capable of arranging an input portion and an output portion of an optical waveguide on the same side of a substrate in which the optical waveguide is formed, and capable of reducing differences in the configuration of each branch waveguide while minimizing optical path differences between branch waveguides. The optical control element has a substrate (1) having an electro-optic effect, an optical waveguide (2) formed in the substrate, and a control electrode that controls an optical wave propagating in the optical waveguide, characterized in that an input portion (incident light (L1)) and an output portion (emitted light (L2)) of the optical waveguide are formed on the same side of the substrate, the optical waveguide has at least one Mach-Zehnder type optical waveguide portion (MZ) having two branch waveguides (21, 22) branched from one optical waveguide and recombining the two branch waveguides to form one optical waveguide, and the branch waveguides have an even number of return portions (A1, A2).

The invention relates to a refraction-super hybrid long-focus day and night confocal lens and an image acquisition device, and belongs to the field of optical lenses. The long-focus day and night confocal lens has focus consistency in a visible light band and an infrared band; comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are sequentially arranged from an object plane to an image plane along an optical axis; at least one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens is a metasurface lens, and the other lenses are spherical lenses. By adopting the technical scheme of folding and super mixing, large-target-surface day and night common-focal-length imaging is realized, the use of glued lenses is reduced, the complexity of the system is reduced, the assembly difficulty is reduced, and the risk that a structural member generates stray light is reduced.

To provide a distance measuring device having high resistance to contamination in a path of light or electromagnetic waves for distance measurement, and to provide a distance measuring device capable of maintaining distance measurement accuracy even when an obstacle exists on the path of light or electromagnetic waves for distance measurement.SOLUTION: A light emitting unit that emits emission light, a light receiving unit that receives reflected light reflected by a distance measurement target, and an opening that houses the light emitting unit and the light receiving unit and is provided on an optical path of the emission light, A housing having an opening end portion that is formed along an inner surface of the light transmitting member of the moving body and has a shape along the inner surface of the light transmitting member, and a deflection plate that covers an opening at the opening end portion and includes a deflection unit that deflects emission light, in which the light emission unit emits first emission light in a first direction and emits second emission light in a second direction, the deflector includes a first deflector configured to deflect the first outgoing light, and a first irradiation region irradiated with the first outgoing light deflected by the first deflector and a second irradiation region irradiated with the second outgoing light deflected by the first deflector at least partially overlap each other.SELECTED DRAWING: Figure 1

The invention discloses a bismuth oxyiodide modified oxygen-vacancy-enriched titanium dioxide nanotube array and a preparation method and application thereof, which realize wide-range and efficient light response efficiency: BiOI (forbidden bandwidth is approximately equal to 1.8 eV) is used as an excellent visible-light-driven photocatalyst and forms a semiconductor heterojunction with TNAs after being loaded, the spectral response range of the material is widened to a visible light wave band, and the visible-light-driven visible-light-driven photocatalyst can be used for preparing a visible-light-driven photocatalyst. And the construction of interface oxygen vacancies also improves the transmission efficiency of photon-generated carriers, so that the photocatalytic efficiency and the visible light utilization rate of the material are greatly improved. The material prepared by the invention can be used for a long time after being fixed in a reactor, and after the material is recycled for 20 times, the degradation rate of typical refractory organic matters in single 60 minutes can still be kept above 90%.

The invention provides a dry-mixed mortar crack risk early warning method and system. The method comprises the following steps: acquiring reflection spectrum differences of dry-mixed mortar aggregates in ultraviolet and visible light wave bands, and quantifying distribution uniformity difference characteristics of coarse and fine aggregates; dynamically adjusting the intensity of a near-infrared light source of the multi-band imaging device based on the characteristics, and constructing a mortar space thermodynamic diagram; identifying the position of a stress concentration area in the thermodynamic diagram, and constructing a stress mapping network taking aggregate particles as topological nodes and stress transfer strength among particles as topological edges; measuring the stress transfer strength change of the topological edge, and calculating the probability distribution value of the crack initiation position; and comparing the probability value with a preset risk threshold value, and generating an aggregate proportion adjustment instruction. According to the method, millisecond-level visual early warning of the aggregate stress transfer risk is realized, the crack initiation prediction accuracy is improved, and the service life of the structure is prolonged.

The invention discloses a preparation method of engineered bacteria for releasing CO gas under initiation of ultrasonic waves to kill tumor cells, and relates to a preparation method of CO carrier engineered bacteria. The invention aims to solve the problems that the existing CO carrier material is low in delivery efficiency, the CO is difficult to release efficiently and controllably in space and time at the same time, and the existing metal CO carrier material is high in toxicity. Meanwhile, the problems that the penetrating power of light waves to biological tissues is limited, and the CO release efficiency is limited due to a tumor hypoxic microenvironment are solved. The preparation method comprises the following steps: 1, modifying the surface of escherichia coli with 3-hydroxyflavone-D-alanine; and 2, continuously modifying the surface of the escherichia coli with CaO2 (at) polymyxin B. The method is used for preparing the engineered bacteria for releasing the CO gas through ultrasonic initiation to kill the tumor cells.

This invention belongs to the field of optical experimental technology, and particularly relates to a physical experimental device and method integrating multiple fiber optic technologies. In use, the light source component emits light waves, which are reflected by the fiber Bragg grating component and split into two parts. One part of the light wave enters the filtering experimental component and then the signal processing module, which processes the signal and displays the results. The other part of the light wave enters the Mach-Zehnder interferometer experimental component and is split into a first light wave and a second light wave. The first light wave passes through the Young's modulus measurement experimental mechanism, and the second light wave passes through the fiber optic temperature sensor experimental mechanism. After exiting the Young's modulus measurement experimental mechanism and the fiber optic temperature sensor experimental mechanism, the first and second light waves couple into the signal processing module, which processes the signal and displays the results. This invention has good integration and can simultaneously measure minute displacements, mechanical parameters, and temperature.

The invention discloses a large-view-field space detection optical lens. The large-view-field space detection optical lens comprises a front lens group, a diaphragm, a rear lens group and an image surface which are sequentially arranged from an object side surface to an image side surface, the front lens group filters incident light waves and forms an intermediate image; the diaphragm controls the luminous flux by adjusting the relative aperture of the diaphragm; the rear lens group amplifies the intermediate image, corrects aberration and performs optical imaging through an image surface; the front lens group comprises a first optical filter, a first negative meniscus lens, a first biconvex lens and a second biconvex lens which are sequentially arranged from a position far away from the diaphragm to a position close to the diaphragm; and the rear lens group comprises a first biconcave lens, a third biconvex lens, a fourth biconvex lens, a first positive meniscus lens, a second negative meniscus lens, a second positive meniscus lens, a third negative meniscus lens and a second optical filter which are sequentially arranged from the diaphragm to the image plane. The optical lens provided by the invention has the characteristics of circular light spot, large view field, low chromatic aberration, low distortion, high resolution and small form deviation of light spots in each view field.

An apparatus for detecting optical waves comprises one or more closed-loop waveguiding structures (CWSs) formed from a core material, each CWS configured to guide optical waves along a closed-loop path. A coupling waveguiding structure is formed from the core material comprising: a first optical coupling portion configured to optically couple at least a portion of an optical wave propagating through the coupling waveguiding structure into the first CWS, and a second optical coupling portion configured to optically couple at least a portion of an optical wave propagating through the coupling waveguiding structure into the first CWS. A first absorbing structure is in optical communication with the first CWS. Circuitry is configured to detect optical waves at least partially absorbed by the first absorbing structure. The coupling waveguiding structure is configured to guide optical waves along a path outside the one or more CWSs.

The embodiment of the present application provides a grating structure, an optical waveguide device and a display device, and belongs to the technical field of display, the grating structure is arranged on the optical waveguide plate, the light in the optical waveguide plate is incident on the grating structure, the grating structure is used for changing the propagation direction of incident light or coupling out the incident light from the optical waveguide plate, the grating structure comprises: a plurality of sub-gratings arranged along a first direction and different in position;Wherein, the light-out angle range of at least two sub-gratings is different, the light-out angle range is the angle range of the light emitted by the sub-grating, and the angle range is the included angle range between the emitted light and the normal direction of the sub-grating. Through the grating structure, the optical waveguide device and the display device provided by the embodiment of the present application, the light efficiency waste caused by the grating structure can be reduced, and the light efficiency of the optical waveguide device is improved.

The invention discloses a composite lens display device and system capable of resisting ambient light interference. The device is sequentially provided with a first lens, a light absorption layer and a second lens along a light path, a light through hole matched with an effective light wave band of a display system is formed in the light absorption layer, the aperture size of the light through hole is accurately set according to the divergence angle of the effective light, the wave band of the light through hole is matched with the aperture, and only the effective light of the display system is allowed to pass through. Compared with an existing film coating scheme, the anti-reflection film is not limited by the narrow effective wave band of the anti-reflection film, wider environment light spectrums can be covered, and the problem that environment light inhibition is not comprehensive is solved. And meanwhile, the light through hole is only opened for effective light rays, so that the effective light rays cannot be attenuated, and the display brightness is prevented from being lost. In addition, the processing technology of the light through hole is simple, the processing difficulty and the energy consumption in the production process are reduced, and the overall production cost is further controlled.

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.

A method to form a light wave-guide optical element is disclosed. First, a flat organic optical layer is formed on an optically transparent substrate before using a template to transfer a pattern onto the flat organic optical layer to obtain a patterned organic optical layer. Then the patterned organic optical layer is cured in the presence of the template to obtain an organic optical material disposed on the optically transparent substrate before removing the template from the organic optical material. Later an anti-reflection stack is formed to conformally cover the organic optical material before applying an organic optical cover layer on the anti-reflection stack to cover the anti-reflection stack.

This invention discloses an intelligent identification and positioning device for tension wire laying pulley skipping grooves, relating to the field of optical wave positioning technology for wire laying pulleys. It includes a pulley frame with a lifting frame fixedly installed at its top, and the pulley frame is connected to a lifting device via the lifting frame. In this intelligent identification and positioning device for tension wire laying pulley skipping grooves, all actions—guiding alignment, position locking, wire guiding, and wire clamping—are achieved by the pressure-driven spindle rotation of the traction plate. After the traction plate contacts the guide wheel, the guide wheel deflection, spindle rotation, position locking, wire guiding, and wire clamping are triggered synchronously, with no time difference or action lag between each stage, forming a closed-loop linkage of trigger-response-locking. It has no electrical control module and is unaffected by strong electromagnetic interference, high dust, or humid environments. It is particularly suitable for the complex working conditions of power transmission line construction—strong electromagnetic fields, high vibration, and no power supply—significantly improving the device's reliability.

The invention relates to a naked-eye 3D display system based on a multi-layer phase modulation composite grating, belongs to the technical field of stereoscopic display, and aims to overcome the technical bottlenecks of low brightness of an existing parallax barrier grating, large crosstalk caused by large thickness of a cylindrical lens and serious dispersion of a diffraction element. The system comprises a two-dimensional display panel and a composite diffraction grating, pixel units of the display panel are composed of red, green and blue sub-pixel matrixes and are coded according to viewpoints. The composite diffraction grating is attached to the light emitting side of the panel, is made of an optical anisotropic material and is of a multi-layer structure, and a first micro-nano structure layer and a second micro-nano structure layer are sequentially arranged along a light path; the first layer is an aspherical focusing array, and the phase delay of the aspherical focusing array meets a quadric surface function so as to collimate light waves; the second layer is a dispersion compensation type deflection array, and the grating period of the second layer is accurately matched with the central wavelength of the sub-pixels, so that light of different colors is projected at the same deflection angle. According to the invention, full-color dispersion-free display is realized, the thickness of the device is less than 50 microns, and crosstalk is obviously reduced.

According to the laser generating device and the laser system, the image transmission device is introduced, the object image surface of the image transmission device is accurately overlapped with the two cavity reflectors of the resonant cavity, the important beneficial effects are achieved, the effective transmission distance of light waves between the two cavity reflectors is equivalently eliminated optically, and the laser generating device and the laser system have the advantages of being simple in structure and convenient to use. Therefore, the inherent diffraction effect and the mode selection capability of the resonant cavity are thoroughly inhibited; the direct result is that a large number of laser transverse modes with different orders are allowed to simultaneously meet oscillation conditions and start oscillation in a cavity, and light fields of the multiple transverse modes are combined into a large-mode-field output light beam with the spot size equivalent to the aperture of a gain medium after incoherent superposition. Moreover, the near-field energy distribution is converted from the conventional Gaussian distribution to super Gaussian distribution with a flat top and a steep edge.

The utility model discloses an 84-bead operation illuminating lamp, relates to the technical field of medical instruments, and solves the problems that an existing operation illuminating lamp usually only generates one kind of white light during use, and can cause visual fatigue of medical staff and reduce the concentration ratio of vision during long-term use, and the 84-bead operation illuminating lamp comprises a first mechanical wall connected with a cantilever, one end of the first mechanical wall is rotationally connected with a second mechanical wall; during use, the distribution state of the yellow bulbs and the white bulbs can improve the adjustment of color temperature, the green light compensation function of the green bulbs can relieve the visual fatigue of medical staff in a long-time operation, the stimulation of green light waves to eyes is relatively small, the attention and the working efficiency of the medical staff can be kept, and the medical staff can be prevented from being damaged. According to the function, a green operation environment is created, visual fatigue can be relieved, and medical workers can keep good visual comfort and concentration degree in the long-time operation process.

The utility model belongs to infrared radiation health care technical field, concretely relates to a kind of infrared radiation light wave bathroom.It includes bathroom, is provided with automatic sterilization purification module on the bathroom, and the automatic sterilization purification module includes ozone sterilization system and ozone degradation discharge system;First infrared radiation plate is respectively installed on the left side wall board, right side wall board, rear side wall board and door body inner side of the bathroom, the inner bottom of the bathroom is installed with two second infrared radiation plate and third infrared radiation plate being separately arranged, infrared physiotherapy stool is placed on the second infrared radiation plate, and footrest is placed on the third infrared radiation plate.In the utility model, the linkage design of ozone sterilization system and degradation discharge module constructs complete disinfection closed loop;Three-dimensional radiation network formed by first infrared radiation plate, second infrared radiation plate and third infrared radiation plate can also realize differentiated heat therapy.

The invention provides a deep and far sea self-sustaining fishing light wave complementary comprehensive power generation system, and belongs to the technical field of comprehensive power generation systems, and the deep and far sea self-sustaining fishing light wave complementary comprehensive power generation system comprises a sea light energy power generation system which is installed at the top of a floating platform; the wave energy power generation device is installed between the supporting stand columns of the floating type platform, and the wave energy power generation device comprises an oscillating floater, a power output system and an adjustable balance weight structure; the gravity type culture net cage system is fixed below the floating type platform, the shape of a net cage is kept through a counterweight system and an anchorage system, and the intelligent culture function is achieved through electric energy generated by a wave energy power generation device; a buoyancy structure of the floating platform and a buoyancy structure of the gravity type aquaculture net cage are shared, and the technical problems that due to independent development of offshore photovoltaic power generation, wave energy power generation and mariculture in the deep and far sea environment, the space utilization rate is low, energy supply is difficult, and collaborative optimization capacity is lacked are solved.

This invention relates to the field of optical technology, specifically to a multi-mode FP-anapole-exciton system that achieves multiple strongly coupled Rabi splits. The system comprises basic units arranged in a two-dimensional periodic pattern, with a square period. Each basic unit includes, from bottom to top, a first dielectric layer, a first metal layer, a composite layer, a second metal layer, and a second dielectric layer. The composite layer includes a transparent dielectric and a heterogeneous disk embedded within it. The heterogeneous disk includes, from top to bottom, a first dielectric disk, a semiconductor disk, and a second dielectric disk. This invention utilizes incident light waves to induce excitation of multiple FP-cavity modes, anapoles, and excitons. Through precise structural design and parameter adjustment, it achieves strong coupling between these multiple FP-cavity modes, anapoles, and excitons, expanding the number of Rabi splits, enhancing the strength of the three-mode coupling, and obtaining multiple large Rabi splitting energies. It has broad application prospects in ultrafast optical switches, Bose-Einstein condensates, and low-threshold lasers.