18results about How to "Reduce refraction" patented technology

The invention discloses a composite film material with lasting fragrance, a preparation method and application of the composite film material in sticky notes, and belongs to the technical field of composite film materials. The composite film material is composed of a PET layer, a bonding layer and a CPP layer; the PET layer comprises PET resin, composite filler, a coupling agent, an antioxidant, an ultraviolet light absorber, a heat stabilizer and a light stabilizer; the bonding layer is composed of a solvent type polyurethane adhesive; the CPP layer comprises PP resin, a modified filler, microcapsule essential oil, a coupling agent, an antioxidant, an ultraviolet light absorber, a heat stabilizer and a light stabilizer; the composite film material prepared by the invention not only has lasting fragrance, but also has strong binding force with a writable coating, high strength, good dimensional stability and high transparency.

The invention discloses a collagen-based and high-transparency matrix for cornea thickening and a preparation method of the collagen-based and high-transparency matrix. The preparation method comprises the following steps: assembling a collagen composite solution into a collagen matrix implant on a set curvature mold through electrochemical deposition; the collagen composite solution is prepared from collagen, glacial acetic acid, hydrogen peroxide, heparin and water; putting the obtained collagen matrix implant and a mold into a cross-linking agent solution for cross-linking; cleaning the residual cross-linking agent after completion, separating the collagen matrix implant from the mold, and placing the collagen matrix implant under an ultraviolet light source for cross-linking to obtain a double-cross-linked collagen matrix implant; and soaking the double-crosslinked collagen matrix implant in a nerve growth factor solution, and performing absorption and combination to obtain the collagen-based and high-transparency matrix for cornea thickening. According to the invention, an electro-deposition assembly technical scheme is adopted, the diameter and thickness of collagen assembly fibers are adjusted and controlled through electric field energy, and the collagen assembly fibers are orderly and regularly arranged, so that scattering and refraction of light are reduced, the light transmittance of cornea is increased and can reach more than 90%, and the problem of light blocking caused by materials is effectively avoided. Operation is matched with femtosecond equipment, operation is easy, consumed time is short, and trauma is small.

The utility model provides a dielectric barrier discharge device and air treatment equipment, and relates to the technical field of air purification. The dielectric barrier discharge device comprises a dielectric barrier discharge assembly, the dielectric barrier discharge assembly comprises a first electrode, a second electrode and a barrier medium separating the first electrode from the second electrode, the barrier medium is cylindrical, the internal space of the barrier medium forms a discharge space, the first electrode is an internal electrode, the second electrode is an external electrode, the first electrode is arranged to be an electrode beam, and the second electrode is arranged to be an external electrode; the electrode beam comprises a plurality of electrode wires arranged side by side; and the power supply module is electrically connected with the first electrode and the second electrode and is arranged to load voltage to the first electrode and the second electrode, so that the dielectric barrier discharge component generates dielectric barrier discharge in the discharge space. According to the scheme, the internal electrodes are arranged into the electrode beams, so that the abnormal sound degree of the dielectric barrier discharge device can be reduced, and the problem of low plasma yield cannot be caused.

The invention relates to the technical field of chemical monitoring, in particular to an N-methylaniline impurity online spectrum monitoring device which comprises a bottom rack, a plurality of glass boxes are evenly arranged on the bottom rack in the length direction, the glass boxes sequentially have different deflection angles, and the deflection angle difference values of the adjacent glass boxes are equal; by arranging the multi-angle deflection glass box, static and multi-angle static monitoring of N-methylaniline is realized, spectral characteristics of impurities in different directions can be effectively captured, and slow rotation of the glass box further drives the internal N-methylaniline to change angles, so that a light source can fully irradiate, and the detection accuracy is improved. Impurities possibly hidden due to local gathering are repeatedly exposed in dynamic rotation, a monitoring blind area is eliminated, the comprehensiveness of impurity detection is remarkably enhanced through the steps, and the accuracy of a monitoring result can be greatly improved especially for trace impurities which are not evenly distributed.

The utility model discloses a detachable B-ultrasonic probe water bag capable of replacing a coupling agent, which comprises a water bag and a prefabricated fixing piece, and the prefabricated fixing piece is used for fixing the water bag at the head end of a B-ultrasonic probe; the water bag is in an egg shape and filled with water, a water inlet is formed in one side of the water bag, and a plug is connected to the water inlet. A plurality of tensioning strips are arranged on the outer ring of the water bag in the circumferential direction and used for being connected with prefabricated fixing pieces. The latex water bag is good in flexibility, ultrathin and capable of being well attached to the B-ultrasonic probe, the gap between the probe and the human skin can be filled with the water bag under the pressure effect during inspection, reflection and refraction of ultrasonic waves on a medium interface are reduced, and therefore the definition and the resolution ratio of images are improved.

The utility model provides a tail light and electric motor car relates to car lamp technical field. The utility model provides a tail light includes bottom shell, light source subassembly and lamp shade, bottom shell is connected with lamp shade, and the end surface of lamp shade has the even light area, and the side wall has the light leakage prevention area, light source subassembly includes the substrate and a plurality of light source spare, the substrate is located between bottom shell and lamp shade, and is installed in bottom shell, a plurality of light source spare interval distribution, and all install in the end surface of substrate towards lamp shade, the light emitting angle of light source spare is arranged as alpha, 90 DEG >= alpha >= 30 DEG, with the distance of the light emitting angle coincidence of two light source spare adjacent is P, with the distance between the end surface of substrate and lamp shade is H, H >= P. The utility model provides a tail light solves the technical problem of low brightness or high development design cost in prior art.

This utility model discloses an encapsulation component for improving the power generation of a module under low irradiance, comprising, from top to bottom, an antireflective front glass, an antireflective film, a stacked crystalline silicon cell, a transparent film, and a grid-coated high-reflectivity back glass. The antireflective front glass includes high-transparency glass and a double-layer coating layer disposed on the upper surface of the high-transparency glass. The antireflective high-refractive-index film includes a cross-linked elastomer film layer disposed near the antireflective front glass and a high-refractive-index film layer disposed near the stacked crystalline silicon cell. This utility model features a double-coating design for the upper high-transparency glass, which improves light transmittance and incident rate, thereby increasing the incident energy of light reaching the solar cells and increasing module power. The middle anti-reflective high-refractive-index film layer, through a double-layer refractive index difference design, reduces the loss of light due to refraction and reflection caused by the refractive index difference, thereby increasing the incident light reaching the solar cells and increasing module power generation efficiency. The bottom layer of high-reflective grid-coated glass is a white grid-coated glass, which improves the secondary utilization rate of incident light. Matching the uppermost low-thickness anti-reflective glass, it can effectively ensure the overall mechanical load design of the module.

The invention discloses a flexible photodetector based on organic semiconductor and a preparation method thereof, which relates to the technical field of photoelectric sensors or flexible electronics. The flexible photodetector comprises, from bottom to top, a porous antireflection film, a flexible transparent substrate, a flexible transparent cathode, a cathode buffer layer, a photoactive layer, an anode buffer layer and an anode; a thermally cross-linked porous polymer antireflection film modification layer is spin-coated on the back of the flexible transparent substrate; the porous polymer film is preliminarily formed by thermal cross-linking to form a polymer uniformly encapsulating an ionic liquid, and then the ionic liquid is washed away to form; the invention introduces a layer of cross-linked polymer porous antireflection film on the back of the flexible transparent substrate, without the need for transfer printing, and has a simple process, which not only effectively enhances the light transmittance and improves the energy conversion efficiency of the detector, but also improves the mechanical robustness and physicochemical stability of the polymer surface through thermal cross-linking, thereby extending the service life of the antireflection film.

This invention provides a water treatment device for aquaculture, belonging to the field of aquaculture water treatment technology. It includes an ultraviolet (UV) sterilization unit with a sealed water delivery component, used for defoaming and sterilization; a mixing auxiliary component is installed on the sealed water delivery component to improve the sterilization quality of the aquaculture water; a self-cleaning unit is installed inside the UV sterilization unit; and an anti-pressure-locking component is installed on the UV sterilization unit. This invention, by setting up a UV sterilization unit, can achieve negative pressure suction. Combined with the slidably adjustable sealed water delivery component, it can achieve diverted, quantitative, and sealed UV sterilization of aquaculture water, thus improving sterilization quality. This solves the problems of existing aquaculture water treatment equipment being inconvenient for independent sterilization and the interference of large amounts of foam and scum in the water with UV sterilization.

This application discloses a carrier device for an ultrasonic flow meter, used to connect a pipeline and an ultrasonic flow meter. The carrier device includes an integrally formed mounting part and a carrier part. The mounting part is fixedly connected to an opening in the pipe wall to install the carrier device on the pipeline, and the ultrasonic flow meter is installed through the carrier part. The carrier part is disposed through the mounting part, so that the carrier part has a first end that penetrates into the pipeline and forms a pressure-bearing boundary with the inner wall of the pipeline, and a second end located outside the pipeline. The carrier part has a cylindrical structure and its axis is collinear with the axis of the ultrasonic flow meter. The ultrasonic flow meter is installed on the carrier part so that the ultrasonic signals emitted and received by the ultrasonic flow meter are perpendicular to the end face of the first end of the carrier part that penetrates into the pipeline, reducing the refraction of ultrasonic signals and enabling the ultrasonic signals transmitted between the ultrasonic flow meters to be received more accurately, thereby improving the measurement accuracy of the ultrasonic flow meter.

The invention discloses a tissue inner surface displacement and strain measurement device and method, and the device comprises a simulated tissue which comprises a bionic polymer, a connecting liquid, and a to-be-measured tissue; the space between the to-be-detected tissue and the bionic polymer is filled with connecting liquid and then packaged; the loading device comprises an impact rod and a transmission rod, the impact rod is arranged at one end of the simulated tissue, and the transmission rod is arranged at the other end of the simulated tissue; the feature making tool is used for making two speckles randomly distributed on the two curved surfaces, the two speckles are transparent under natural light and present two different colors under illumination with a certain bandwidth, and the imaged curved surface picture has high contrast; the calibration tool is used for calibrating internal parameters and external parameters of the camera; and the data processing module is used for calculating the displacement and strain mechanical quantity of the acquired image and correcting a calculation result. The device solves the problems that when a contact impact object is measured, the measurement object and the impact object shield each other, the internal mechanical response of the object is difficult to capture, and the distortion error of the observation object is large.

The invention provides a test fixture for testing an image sensor chip, and aims to solve the problems of poor imaging consistency, limited site layout and the like caused by stray light generated by reflection and refraction of light on the surface of a structural member in an existing structure. The through straight hole is formed in the structure between the light source and the lens, and the transparent light guide piece is embedded in the straight hole, so that illumination light is transmitted in a unique and stable path. The material and the shape of the light guide piece can be freely selected according to requirements so as to adapt to different spectral characteristics and light source positions. The light enters the dodging part and the lens system after being directionally transmitted by the light guide part, and the middle does not contact the surface of a surrounding structure, so that stray light is effectively prevented from being generated, and the illumination uniformity and imaging consistency of each test position are remarkably improved. Due to the fact that the light path is strictly limited, the scheme is not limited by the field angle of the lens any more, the site distance can be reduced, a plurality of test positions can be flexibly arranged, the number of testable points in unit area is increased, and therefore the test efficiency and the throughput capacity of a production line are improved. The probe card is simple in structure, convenient to process and high in adaptability, can be directly applied to an existing probe card system, and has good popularization value.

This disclosure relates to a transparent display device, comprising: a substrate having a plurality of emitting regions and a plurality of transparent regions spaced apart from each other; a light-emitting element located at the emitting regions; an encapsulation layer located on the light-emitting element; a first wiring layer and a second wiring layer disposed on the encapsulation layer and located at different layers; a touch buffer layer located between the encapsulation layer and the first wiring layer; a touch intermediate insulating layer disposed between the first wiring layer and the second wiring layer; a first protective layer located on the second wiring layer; an external light reflection prevention layer disposed on the first protective layer and including a light-shielding layer and a color filter layer; and a second protective layer disposed at the plurality of emitting regions on the external light reflection prevention layer and at the plurality of transparent regions on the encapsulation layer.

The invention relates to a flow field measurement method and system for dam break flow flowing through vegetation, and the method comprises the following steps: S1, manufacturing a vegetation experiment model, and enabling the refractive index of a solid material for simulating vegetation to be the same as the refractive index of fluid; s2, a particle image velocity measurement device is arranged, the particle image velocity measurement device comprises a laser source and a camera, the laser source faces the vegetation experiment model, an area illuminated by laser is located behind the solid material, and the camera faces the front of the solid material; s3, dam break flow is generated by pulling out the baffle; and S4, taking a picture of the area illuminated by the laser through the camera, and processing data of the picture to obtain information of the flow field. Compared with the prior art, the method has the advantages that the vegetation is simulated by manufacturing the transparent solid material with the same refractive index as the fluid, and the aims that the solid does not block light rays and does not refract the light rays are achieved, so that the flow field in the vegetation can be effectively measured through the PIV technology.

This invention provides a geostress testing device and method based on sleeve-induced fracturing, belonging to the field of rock mass engineering monitoring technology. The device includes a sleeve fixing frame, a piezoelectric ceramic acoustic transducer, a shielding wire, sleeve rubber, an annular plug, a hose, a sleeve support, a mounting rod, an angle disc, a high-pressure hand pump, an oscilloscope, and an acoustic drive board. Waveform signals are emitted through the acoustic drive board and one piezoelectric ceramic acoustic transducer, while the other transducers receive the waveform signals. Pressure is slowly increased by the high-pressure hand pump, and the pressure gauge value and the waveform information displayed on the oscilloscope are recorded in real time. By analyzing the changes in the amplitude parameters of the transducer waveform information and the pressure gauge value, the initial fracturing pressure and the fracturing re-tension pressure of the rock mass are determined. After fracturing, the changes in the amplitude parameters of the waveform information are measured again by rotating the device by a certain angle each time. The location of the fracturing can be determined based on the received waveform signals at different angles, and the presence or absence of rock mass fracturing can be determined by the changes in the waveform signal amplitude.

The utility model discloses a colony counting device, including shell, light -proof door board, lighting unit and counting unit, the one side of shell is provided with and takes the mouth of putting, the light -proof door board can open or close and take the mouth of putting, still be equipped with the recessed cavity of accommodating petri dish in the shell, the lighting unit is used for the illumination petri dish, the counting unit is used for the colony counting. The utility model discloses rational in structure, technical effect is high, and convenient operation.

The utility model relates to the technical field of solar cells, in particular to a packaging structure which comprises a first packaging structure layer, the first packaging structure layer is provided with a plurality of through holes, and the through holes can penetrate through the upper surface and the lower surface of the first packaging structure layer. The utility model further provides a multi-layer composite solar cell panel module which is provided with a first packaging structure layer. Compared with the prior art, the stress distribution of the first packaging structure layer can be changed through the through holes, so that the stress is redistributed around the through holes, the phenomenon of stress concentration is relieved, more uniform deformation of the first packaging structure layer during bending is facilitated, local overhigh stress of the first packaging structure layer is reduced, and the reliability of the packaging structure layer is improved. Therefore, the first packaging structure layer is ensured not to be cracked or fractured due to overlarge stress in the bending process, and the condition that all layers of the solar cell panel module are not cracked or layered is ensured, so that the cell can obtain a good sealing protection effect, the use reliability of the solar cell module is improved, and the service life of the solar cell module is prolonged.