261 results about "Light sensitivity" patented technology

The invention relates to alkali-soluble light-cured resin and a preparation method thereof, a light-cured resin composition, a photosensitive dry film and a semiconductor device. The structural formula of the alkali-soluble light-cured resin is shown as a formula (I) or a formula (II), wherein in the formula (I), R1 is selected from one of a single bond, an oxygen atom, a sulfonyl group and an organic group with 1-30 carbon atoms; in the formula (I) and the formula (II), n is a natural number greater than or equal to 0; r2 is selected from organic groups with 1-50 carbon atoms; r3 is selected from an aromatic organic group or an aliphatic organic group; r4 is selected from organic groups containing unsaturated carbon-carbon double bonds; and R5 is selected from carboxyl-containing organic groups. A molecular chain of the alkali-soluble light-cured resin contains a photosensitive group, an imide structure and an alkali-soluble group, on one hand, the thermal mechanical property of the alkali-soluble light-cured resin can be enhanced, and on the other hand, the alkali-soluble light-cured resin can form a uniform and stable resin glue solution in a solvent, so that the comprehensive performance of the alkali-soluble light-cured resin is improved.

The invention discloses a method for detecting acrylamide in coffee based on colorimetric and photo-thermal dual modes of MXene / MOFs nano-enzyme, and belongs to the technical field of chemical analysis and detection.According to the method, LiF and HCl are used for etching Ti3AlC2 to obtain Mxene, a solvothermal method is adopted for synthesizing Mn / Fe-MIL-NH2, Mxene coated Mn / Fe-MIL-NH2 nano-enzyme is obtained in a self-assembly mode, the Mxene coated Mn / Fe-MIL-NH2 nano-enzyme has peroxidase-like activity and photo-thermal performance, and the Mxene coated Mn / Fe-MIL-NH2 nano-enzyme can be used for detecting acrylamide in coffee in the colorimetric and photo-thermal dual modes. Under irradiation of near-infrared light 808 nm, peroxidase-like activity of the Mxene-coated Mn / Fe-MIL-NH2 nano-enzyme is improved, due to addition of acrylamide, the speed of oxidizing a substrate TMB by the Mxene-coated Mn / Fe-MIL-NH2 nano-enzyme is increased, meanwhile, the temperature of the oxidized TMB with photosensitive performance is also increased, and the method has the advantages of being high in sensitivity, high in specificity, easy to operate, rapid and the like.

The invention relates to the technical field of machine vision detection, particularly discloses a mechanical part surface defect vision detection system, and aims to solve the problems of blind areas, environment light sensitivity, insufficient tiny defect detection capability and the like in the detection of complex curved surface high-reflection parts. Comprising an optical imaging module, a geometrical morphology sensing module, a dynamic polarization regulation and control module, an image fusion and enhancement module and a defect identification and decision module. The three-dimensional morphology of the surface of the part is sensed in real time, the imaging polarization state is dynamically regulated and controlled according to the three-dimensional morphology, multi-frame polarization image fusion and digital diffraction enhancement processing are combined, full-coverage and high-contrast detection of the complex curved surface part is achieved, motion blur is effectively restrained, and the detection capacity of sub-pixel-level tiny defects and the system environment adaptability are improved.

The invention provides an image processing method and device, electronic equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: performing light sensation parameter prediction processing on an input image to obtain a light sensation parameter of the input image; determining an expected color temperature corresponding to the light sensation parameter from a corresponding relationship between the candidate light sensation parameter and the candidate expected color temperature; determining the current color temperature of the input image, and determining the color temperature error rate of the input image based on the expected color temperature and the current color temperature; updating the light sensation parameter based on the color temperature error rate to obtain an updated light sensation parameter; and adjusting the input image through the updated light sensing parameter to obtain an adjusted input image. According to the invention, the accuracy of the image color temperature can be improved.

The invention discloses a photosensitive metal-organic coordination nanocage material as well as preparation and application thereof. The photosensitive metal-organic coordination nanocage material comprises a photosensitive ligand, metal ions and counter anions. According to the metal-organic coordination nanocage material, pure water can be decomposed into hydrogen and hydrogen peroxide only through ultrasound and illumination under the condition that a sacrificial agent is not added, and the metal-organic coordination nanocage material has efficient piezoelectric electro-catalytic performance.

The invention discloses an image facial feature extraction and fusion method and system and a memory, and the method comprises the steps: carrying out the feature extraction of a source role facial image, and generating a basic feature map and an identity feature vector; performing decoupling processing on the basic feature map by taking the identity feature vector as a control condition, and separating an expression feature channel and an illumination feature channel; inputting the decoupled expression feature channel and illumination feature channel into a scene perception gating network, and generating an adaptive fusion feature map in combination with the target scene image; executing Poisson fusion and generative adversarial refinement on the adaptive fusion feature map, and outputting an optimized fusion image; through a decoupling mechanism guided by an identity feature vector, texture distortion and illumination sensitivity are avoided, a scene perception gating network dynamically adjusts a feature fusion weight, cross-scene adaptability is remarkably improved, poisson-generative adversarial two-stage fusion introduces antagonism refinement on the basis of gradient domain optimization, boundary splicing traces are eliminated, and the fusion precision is improved. And high-fidelity and cross-scene facial feature fusion is realized.

The invention discloses an accurate view field distortionless scanning high-resolution microscopic imaging method and device based on position feedback. The piezoelectric deflection mirror system is used for replacing a traditional scanning system, a position feedback signal of the deflection mirror is utilized, clock signals of light source switching and signal detection are obtained, the light source is controlled to be turned on when the deflection mirror is located at a target view field and turned off when the deflection mirror is located at other positions, and therefore the view field is accurately controlled, and the scanning precision is improved. The photosensitive sample can be protected on the hardware level, so that the utilization rate of the sample is improved; position feedback signals of the deflection mirror under different voltage amplitudes and different scanning frequencies are processed, a linear section proportion which can be considered to be in distortionless scanning imaging in a scanning stroke is extracted, the variable is deduced, a more accurate fitting relational expression is provided, and the linear section proportion is calculated. A correct voltage amplitude capable of enabling a target view field to be in a linear section in a scanning stroke is applied to the deflection mirror, so that distortionless target view field scanning is realized. The method and the device have a wide application range.

The invention provides a light generating system (1000) comprising one or more light generating devices (100), wherein each of the one or more light generating devices (100) are configured to generate device light (101), wherein the light generating system (1000) is configured to generate system light (1001) comprising the device light (101) of at least one light generating device (100), wherein the light generating system (1000) is configured to provide (in an operational mode) system light (1001) according to the following characteristics: (A) during a first time period t1 the system light (1001) is white light having a radiant flux Φ11 in a first wavelength range and a radiant flux Φ12 in a second wavelength range; (B) during a second time period t2 the system light (1001) is light having a radiant flux Φ21 in the first wavelength range and a radiant flux Φ22 in the second wavelength range; (C) during a third time period t3 the system light (1001) is light having a radiant flux Φ31 in the first wavelength range and a radiant flux Φ32 in the second wavelength range; (D) Φ21<Φ11 and Φ31<Φ11; (E) Φ22>Φ12, and Φ32<Φ12; (F) t2 is selected from the range of 1 second-30 minutes; and t1>t2; and (G) the first wavelength range is 380 nm-λ1 and the second wavelength range is λ1-780 nm, wherein λ1 is selected from the range of 485-550 nm.

The present invention provides an organic electric element including a metal patterning layer formed on the outside of a metal electrode and an electronic device thereof, and by forming a patterning auxiliary photosensitive layer made of a material with excellent photosensitivity under the metal patterning layer, it is possible to easily measure the thickness of the metal patterning layer.

2.1. To increase the resolution of quasi-confocal line scanning microscopes with a main beam splitter for coupling the illumination and detection beam paths, the "re-scan" method involves descanning the sample light in the detection beam path by the illuminating beam deflection unit. After descanning, the sample light is scanned again in the detection beam path by moving it across the sensor behind the confocal aperture by a second beam deflection unit in a direction transverse to the linear focus. To increase resolution in the longitudinal direction, the illumination line can be structured. This optical arrangement has the disadvantage of significant light losses due to the large number of optical interfaces that must be passed through. 2.2. A microscope in which the illuminating beam deflection unit is optically positioned between the light source and the main beam splitter, allowing the sample light to reach the sensor away from the illuminating beam deflection unit (non-descanned), is more light-sensitive and flexible. A control unit, in one operating mode, moves the sample light beam across the sensor using only the second beam deflection unit. Depending on the operating mode, synchronization with the first beam deflection unit may be provided. 2.3. Due to its high light sensitivity, the microscope is particularly suitable for fluorescence microscopy.

The invention provides a novel light-sensitive channel protein VR2.0 and application thereof. The photosensitive channel protein VR2.0 series provided by the invention has an obvious treatment effect in treatment of retina photoreceptor cell degenerative diseases. The novel light-sensitive channel protein has higher light sensitivity, fast dynamics and low side effect; under the same light stimulation condition, the response frequency is fast, and stable current signals can be kept under high frequency response. The application provides a better choice for developing photogenetic therapy for retina photoreceptor cell degenerative diseases, and has important application and popularization values.

A system for calibrating the light sensitivity of a camera includes a light emitter for emitting a light pulse, a fiber splitter for receiving the light pulse via an input port and providing first and second portions of the light pulse to respective first and second output ports, and a light collector for receiving the first portion from the first output port and converting the first portion to a first signal representative of a light characteristic of the first portion. A first fiber optic cable connects the light emitter and the input port, a second fiber optic cable connects the first output port and the light collector, and a third fiber optic cable has a first cable end connected with the second output port and a second cable end for emitting the second portion of the light pulse for capture by the camera. A related method is also provided.

The invention belongs to the field of exhibition light control, and particularly relates to an exhibition space light environment parameter optimization regulation and control method and system based on illumination perception, and the method comprises the steps: firstly building a three-dimensional model through obtaining exhibition semantic information and spatial constraints, extracting an exhibit light sensitivity level and spatial fluctuation information, and dividing an illumination control region sequence according to the exhibit light sensitivity level and the spatial fluctuation information; fusing the photosensitive damage rate and the importance degree of the exhibit, and determining a dynamic target optical parameter control interval set; the method comprises the following steps: constructing a hierarchical target mapping function of a fusion fit degree, exhibition experience and an energy-saving index, and dynamically setting main and auxiliary control functions in different time periods according to a control index priority factor; and solving the optimal optical parameter set of each time period by adopting an optimization search algorithm, and carrying out inversion to obtain an optical parameter control index. According to the method, self-adaptive balance optimization of the exhibition light environment among multiple targets of cultural relic preventive protection, audience visual experience and system energy-saving efficiency is realized.

According to the low-shrinkage 3D printing zirconia ceramic and the preparation process thereof, photosensitive polyimide is selected, the photosensitive polyimide has an imine ring and a photosensitive group on a macromolecular chain and has the advantages of excellent photosensitivity, thermal stability, low volume shrinkage and the like, a photoinitiator does not need to be added into a product system, and the preparation process is simple. Curing can be directly completed under ultraviolet irradiation, and the problems of ceramic shrinkage, cracking and the like caused by volatilization or decomposition of a photoinitiator in a workpiece during degreasing are avoided; the ratio of the dispersing agent to the plasticizer in the product system is optimized, the viscosity of the slurry is reduced, the solid content is increased, the shrinkage rate after sintering is reduced, and the flowability and the printing precision of the slurry are ensured. Besides, by combining a flash sintering treatment process, grain growth coarsening is inhibited, a nanoscale compact structure is realized, and internal defects are reduced, so that the zirconia ceramic prepared by the method has the advantages of no defect, compact structure, smaller grain size (smaller than 1 mu m), excellent fracture toughness and higher relative density.

The present invention relates to a multi-luminance visual navigation test field for performing a vision test on a test subject. The multi-luminance visual navigation test field comprises: a test map, which can be operated to form a plurality of test scenes, each of which is provided with a preset walking route; a plurality of static obstacles, which are arranged on the test map and are used to form obstacles on the test map to hinder the test subject's progress; and a light source assembly, which is used to provide a plurality of light intensities. The multi-luminance visual navigation test field solves the problem in the prior art that the route design of the MLMT scheme is a full white background and arrows are used to indicate the direction of travel, but since most RP patients have extremely low vision and show decreased panretinal light sensitivity mainly due to rod cell damage, the problem that patients have difficulty distinguishing route markings and thus have difficulty in detection is solved. The multi-luminance visual navigation test field has a wide range of applications, low cost and higher detection accuracy.

The invention discloses a photoresponse biomass-based material for removing organic-inorganic combined pollution in water as well as a preparation method and application of the photoresponse biomass-based material. The preparation method specifically comprises the following steps: (1) designing a photosensitive functional monomer; (2) preparing a biomass macromolecular initiator; (3) preparing the photoresponse biomass adsorbent; and (4) preparing the photoresponse biomass-based intelligent material. The photoresponse biomass-based material prepared by the method is rich in raw material source, green and environment-friendly, can be used for adsorption of composite pollutants (such as heavy metal / organic matter composite pollution and the like) in the environment, and can simultaneously realize desorption of the pollutants, photocatalytic degradation of the pollutants and regeneration of an adsorbent under the illumination condition; the defects that the traditional adsorbent regeneration process is complicated, secondary pollution is easy to generate, the repeated utilization rate of the adsorbent is low and the like are effectively overcome, and wide application prospects are achieved.

The invention discloses an ancient building repairing auxiliary system based on a color quantization technology, and relates to the technical field of ancient building special decoration. The acquisition module is used for acquiring a dust light transmission attenuation coefficient determined according to the dust concentration and a target attenuation coefficient, determining a reference brightness ratio of the current brightness to the dust-free standard brightness by a standard reference plate and a preset temperature and humidity compensation factor, and calculating an environment illumination value; according to the identified average reflectivity of the material, 1 minus the mirror reflection ratio and the surface roughness, endowing different weight values, and then adding to determine a material optical value of the material; dividing the product of the environment illumination value, the material optical value and a preset material photosensitivity correction factor by 100 to obtain a comprehensive illumination value; driving an execution unit to execute different strategies according to the comprehensive illumination value; therefore, the problem that some tiny flaws cannot be accurately positioned during repair defect detection due to different on-site environments after the ancient building is preliminarily repaired can be solved, and the method is simple, effective and easy to use.

The invention provides a mammary gland analysis method based on an infrared thermal image, electronic equipment and a storage medium. The mammary gland analysis method comprises the steps that S1, the infrared thermal image including a light sensation value of a mammary gland area is acquired; s2, dividing the light sensation value into a plurality of color levels; s3, segmenting a mammary gland region and a blood vessel region of the infrared thermal image through a deep learning segmentation model; s4, extracting color gradation data of pixel points of the mammary gland area and the blood vessel area based on a segmentation result; and S5, analyzing the color gradation data through the decision tree model, judging the mammary gland type, and judging the blood vessel richness and the blood vessel symmetry based on the mammary gland type. And biological information for reference can be provided for auxiliary diagnosis more conveniently and quickly.

The alkali-soluble photosensitive resin composition containing the comb-shaped structure has the advantages of being rapid in development, good in adhesive force, stable in heat resistance, sensitive in light sensitivity, rapid in curing, flat in surface after pattern forming, uniform in chromaticity and the like. The invention also relates to application of the photosensitive resin composition in preparation of a color filter, and the prepared color filter has good adhesive force.

The invention relates to the field of film-forming resins for CTP plate coatings, in particular to a film-forming resin for a CTP plate coating and a preparation method of the film-forming resin, and aims to solve the problems of the film-forming resin for the CTP plate coating in the aspects of photosensitive resin, adhesive force and oxidation resistance. The preparation method comprises the following steps: carrying out free radical copolymerization on three monomers of tert-butyl acrylate, acrylic acid and phenyl methacrylate to prepare a series of intermediate copolymers, and reacting glycidyl methacrylate with carboxyl in the intermediate copolymers to introduce photocurable double bonds. By adding the modified antioxidant and the modified high-adhesion promoter, the performance of the CPT plate can be greatly improved, so that the film-forming resin of the prepared CTP plate coating is comprehensively improved in five key indexes of light sensitivity, imaging resolution, printing resistance, storage life and scene adaptability of the CPT plate, and the film-forming resin is particularly suitable for modern printing requirements of high precision, long plate number and multiple scenes; and material support is provided for cost reduction and benefit increase in the printing industry.

Method to measure a visual photosensitivity discomfort threshold or presence of a condition associated therewith within a subject, includes obtaining, by one or more processors, a plurality of images of the subject captured while the at least one pupil and corresponding palpebral fissure contour was being subjected to a light stimuli; determining, by the one or more processors, executing instructions for a neural network having been trained using a plurality of images of a plurality of subjects captured at a plurality of different illumination levels, an output value corresponding to a measure of visual photosensitivity discomfort threshold in which the visual photosensitivity discomfort threshold is defined by an estimated illuminance of the retina of the subject, and outputting, by the one or more processors, the output value in a report.

The present application provides a display panel and a display device. A light-shielding layer of the display panel comprises a first light-shielding portion, a second light-shielding portion and a third light-shielding portion, wherein the first light-shielding portion can perform light shielding on a first active portion of a driving transistor, the second light-shielding portion can perform light shielding on a third active portion of a compensation transistor, and the third light-shielding portion can perform light shielding on a fourth active portion of a first initialization transistor, thereby improving the photosensitivity and electrical properties of the compensation transistor and the first initialization transistor.

This invention discloses a photosensitizer, an i-line photoresist containing the photosensitizer, and a preparation method thereof. The preparation method of the i-line photoresist composition disclosed in this invention includes the following steps: uniformly mixing the components of the i-line photoresist composition, wherein the i-line photoresist composition includes the following components: phenolic resin, photosensitizer, silicone leveling agent, and organic solvent; wherein the photosensitizer is composed of photosensitizer A and photosensitizer B. The i-line photoresist composition prepared using the photosensitizer of this invention produces photoresist patterns with high photosensitivity and resolution when used in i-line lithography.

The invention relates to a laser radar sensor and a vehicle, the laser radar sensor comprises a sending unit, a receiving unit, a protection window, a housing and an analysis processing unit, the sending unit is used for generating laser pulses irradiated into the environment; the receiving unit is used for receiving components, reflected in the environment, of the laser pulses emitted to penetrate through the protection window by means of a detector and generating corresponding signals; the evaluation unit is placed in a first reception mode before receiving a partial reflection of the laser pulse caused by the protection window within the lidar sensor, and is placed in a second reception mode in a time interval in order to emit the laser pulse, the receiving unit has a lower light sensitivity in the first receiving mode than in the second receiving mode; the analysis processing unit is arranged to receive the signal generated by the receiving unit and to distinguish between a first signal component generated by a partial reflection on the protection window and a second signal component generated by a reflection on an object in the lidar sensor environment.

The utility model discloses a display module detection jig with a photosensitive element, which is characterized in that a power switch is designed into a hinge shape, an LED light source for testing the photosensitive element is fixed on an upper hinge, the LED light source is provided with a black silica gel protective sleeve, the protective sleeve is made of soft materials, and when the switch is closed, the semi-permeable ink silk-screen area of a glass cover plate can be completely covered. Interference of external environment light on the quantity of light penetrating through the semi-through hole is isolated, whether light sensing of the photosensitive element is normal or not is detected, photosensitive sensing defective products are screened out, and the product quality is guaranteed.

The present invention belongs to the technical field of new nanomaterials, and relates to a photosensitive material TPE-CHO and a covalent organic framework nanomaterial prepared based on the same. First, a photosensitive material TPE-CHO: #imgabs0# is prepared, which has a strong electron acceptor-donor-acceptor structure and provides good optical properties. Compared with most organic molecules, it has high photostability, a wide light absorption range and a high molar extinction coefficient, which greatly supplements the shortcomings of current photochemical functional materials. It is then reacted with COF to obtain a covalent organic framework nanomaterial, which can produce under light. 1 O2 has strong photosensitivity, and its synthesis process is simple and can be completed at room temperature.

This invention discloses a coumarin-linked conjugated porous polymer, its preparation method, and its applications. The preparation method includes: subjecting a homogeneous mixture containing o-hydroxybenzaldehyde monomer, phenylacetonitrile monomer, solvent, and catalyst to a Knauven-Gail condensation reaction to obtain the coumarin-linked conjugated porous polymer. The coumarin used in this invention to prepare the coumarin-linked conjugated porous polymer is a highly planar molecule. Its full conjugation extends the absorption wavelength to the visible light region and enhances π-electron excitation, thus exhibiting strong photosensitivity. The resulting series of coumarin-linked highly conjugated nanoarray conjugated porous polymers possess high porosity and a fully conjugated structure, making them highly efficient for applications in photocatalysis, fluorescence sensing, and optoelectronic devices.

The application discloses a naphthyl derivative for regulating photoresponse through thermal phase change and a preparation method and application thereof. The naphthyl derivative is (2Z,4E)-2-(3-chlorophenyl)-5-(7-(dimethylamino)naphthalen-2-yl) penta-2,4-diphenyl nitrile, and Y crystal forms can be obtained by crystallization in solvents, wherein the Y crystal forms exhibit photo-inertness, and a unique SCSC phase change occurs when the Y crystal forms are heated to the vicinity of a melting point, the thermal phase change can make the Y crystal forms transform into Y transition crystal forms exhibiting photosensitivity, and the conversion from photo-inertness to photosensitivity is realized. The Y transition crystal forms can also be obtained by crystallization through a solvent method. The Y transition crystal forms are combined with PVA to prepare a composite film, the obtained composite film can be bent and twisted without affecting photoresponse performance, and the composite film is expected to be applied to a light brake. Further, conductive silver paste is coated on the surface of the composite film to make the composite film conductive, and the composite film is connected to a patch circuit to prepare a light-controlled switch, and the light-controlled switch is expected to be applied to the field of molecular robots.

Provided is an ultraviolet light receiving device having photosensitivity effective to target wavelengths in the ultraviolet region. A Schottky junction ultraviolet light receiving device has the photosensitivity peak wavelength in an ultraviolet region of 230 nm or more and 320 nm or less, and exhibits a rejection ratio of 105 or more, the rejection ratio being the ratio of the responsivity Rp to the peak photosensitivity wavelength to the average of the responsivity Rv to a visible region of 400 nm or more and 680 nm or less (Rp / Rv).

An exemplary system comprises a memory that stores instructions and a processor communicatively coupled to the memory and configured to execute the instructions to perform a process. The process may comprise directing a cochlear implant to emit light having a first wavelength by way of one or more optrodes of an optrode lead inserted at least partially within a cochlea of a recipient, the light having a first wavelength optically stimulating neurons of the cochlea and directing the cochlear implant to emit light having a second wavelength by way of the one or more optrodes, the second wavelength being different than the first wavelength and triggering release of a compound that is impregnated within the optrode lead and that facilitates light sensitivity of the neurons.