348 results about "High reflectivity" patented technology

The invention provides high-reflectivity coated glass and a preparation method thereof. The high-reflectivity coated glass comprises a glass substrate, and an antioxidant dielectric layer, a reinforced dielectric layer, a metal layer and an outer dielectric layer which are sequentially arranged on the glass substrate, and the reinforced dielectric layer comprises a first dielectric layer and a second dielectric layer which are arranged in sequence. According to the coated glass provided by the invention, through specific dielectric layer structure combination, the reflectivity of the coated glass is improved, the transmittance is reduced, and the coated glass has good oxidation resistance, scratch resistance and heat-resistant processability, is simple in preparation process and has a wide application prospect.

The invention belongs to the field of composite materials, and particularly relates to a nanofiber radiation refrigeration heat insulation film with a bionic multilayer structure. The device sequentially comprises a bionic anti-reflection layer, a solar spectrum reflection layer, a nanofiber porous heat insulation layer and an atmospheric window radiation layer from outside to inside, the bionic anti-reflection layer is a sub-wavelength nano bulge array simulating a moth eye structure and is formed on the outer surface of the solar spectrum reflecting layer; the solar spectrum reflecting layer is a polymer film doped with high-reflectivity nanoparticles; the nanofiber porous heat insulation layer is a porous membrane formed by interweaving polymer nanofibers prepared by an electrostatic spinning technology; the atmospheric window radiation layer is a functional layer formed by coating or blending high-emissivity inorganic nanoparticles on the inner surface of the nanofiber porous heat insulation layer; the film integrates bionic antireflection, high sunlight reflection, efficient heat radiation and physical heat insulation, and efficient, stable and flexible daytime radiation refrigeration is achieved.

The invention provides a surface-emitting gallium nitride VCSEL laser chip and an epitaxial defect suppression preparation method thereof, and relates to the technical field of laser chips, the surface-emitting gallium nitride VCSEL laser chip comprises a substrate, a low-temperature nucleating layer, a high-temperature recovery layer, a stress regulation type nano mask composite defect blocking layer, an n-type nitride DBR reflector, an active region, a polarization enhanced tunnel junction and the like, the defect blocking layer adopts an in-situ silicon nitride nano-porous mask layer to be matched with an aluminum gallium nitride / gallium nitride stress compensation superlattice layer, through pulse type lateral epitaxial overgrowth annihilation penetrating dislocation, and the n-type nitride DBR reflector adopts an AlInN / GaN lattice matching material system to be combined with a hydrogen etching interruption modification technology, so that thick film growth with zero cracks and high reflectivity is realized; a polarization enhanced tunneling junction is used at the top to replace ITO, and the hole tunneling probability is enhanced by piezoelectric polarization in InGaN, so that efficient current injection with low working voltage and no absorption loss is realized, the dislocation density and the device voltage are remarkably reduced, and the yield of an epitaxial wafer and the photoelectric conversion efficiency are improved.

The invention discloses a dynamic self-adaptive radiation refrigeration material which comprises the following components in percentage by mass: 15-30% of matrix resin, 40-60% of a ternary function system, 1-3% of a dispersing agent, 2-5% of a cross-linking agent and the balance of deionized water, the ternary function system is composed of a temperature-sensitive block copolymer, phase change microcapsules and rare earth doped infrared emission particles according to the mass ratio of (1-2): (2-3): (1-1.5). According to the refrigeration material, when the environment temperature is higher than the low critical solution temperature of the temperature-sensitive copolymer, the temperature-sensitive chain segment shrinks to expose the rare earth particles, so that high reflectivity of sunlight and high emissivity of an atmospheric window are realized, and refrigeration is enhanced; when the temperature is lower than the phase-change temperature of the phase-change material, the temperature-sensitive chain segments stretch and wrap the rare earth particles, the infrared emissivity is reduced, heat loss is reduced through phase-change heat release, the dual functions of efficient refrigeration in summer and heat loss reduction in winter are achieved, and the applicability of the coating in an area with the large temperature difference is improved.

The invention discloses a preparation method of copper-based composite powder with high infrared laser absorptivity and a reaction device of the copper-based composite powder, and belongs to the technical field of metal additive manufacturing. The preparation method of the copper-based composite powder comprises the following steps that copper powder is subjected to acid pickling pretreatment, Cu2O-coated Cu powder is prepared through air suspension dynamic etching, the Cu2O-coated Cu powder is purified, and the prepared composite powder is of a core-shell structure and comprises a copper core and a cuprous oxide modified shell wrapping the surface of the copper core; by means of the structure, the absorptivity of the copper powder to near-infrared laser of 1064 nm and the like can be remarkably improved to 30% or above, and therefore the problems that pure copper is poor in melting and multiple in forming defect due to high reflectivity in laser additive manufacturing are effectively solved. The composite powder can be directly used for existing selective laser melting or directional energy deposition equipment, has great significance in achieving high-density copper part forming under medium power, and is convenient to prepare, low in cost and high in practicability.

The invention provides an unmanned aerial vehicle inspection tour anti-dazzle visual angle optimization method and system based on background perception. Acquiring a key detection area of the inspection target; candidate shooting poses of the unmanned aerial vehicle are generated for the key detection area; constructing a glare risk function based on the material type parameters, the solar incident angle and the deviation angle between the camera observation direction and the mirror reflection direction; constructing a contrast scoring function based on the brightness corresponding to the background type and the reflection brightness corresponding to the key detection area; a target shooting position is selected according to the glare risk function and the contrast scoring function, and an unmanned aerial vehicle inspection track is generated; the shooting visual angle of the unmanned aerial vehicle is automatically selected and adjusted in a complex natural light environment, the image failure risk caused by high reflection, silhouette and low contrast is reduced, and the detectability of defects of key parts is improved.

The application discloses a kind of low thermal conductivity high reflectivity five-element co-doped ceramic laser protection coating and preparation method thereof, belong to high-energy laser protection technical field.The protective coating includes the adhesive layer and the reflective heat insulation layer of laminated arrangement, adhesive layer is arranged on the surface of base material, reflective heat insulation layer is arranged on the surface of adhesive layer;Wherein, adhesive layer is formed by spraying one of Ni-Al self-bonding powder, Ni-Mo-Al, NiCrAlY, CoCrAlY and NiCoCrAlY;Reflective heat insulation layer is the ceramic coating of five-element co-doped ZrO2, in ceramic coating, base element is ZrO2, doping component is:Y2O3, Gd2O3, Yb2O3, TiO2 And Ta2O5, after doping, material is single cubic phase structure at 25 ℃-1600 ℃.By multiple oxide doping to ZrO2, the coating can maintain cubic phase at room temperature while having lower thermal conductivity and higher reflectivity, can solve the problems of oxidation reflectivity reduction of metal material, mass loss of ablation material and insufficient heat insulation capacity of heat insulation material in laser protection field, prolong service life.

The invention relates to a packaging structure of a micro display chip and a display device, and the packaging structure comprises a substrate, the surface of which comprises a display area and a non-display area; the electrode pads are located in the non-display area; and a plurality of through hole plugs located in the substrate, wherein one end of each through hole plug is electrically connected with the electrode pad. In AR near-to-eye display application, the light absorption structure can effectively absorb stray light returned from components such as an optical waveguide and the like, secondary specular reflection of the metal electrode pad on the non-display area is avoided, ghosting is prevented from being formed, and the imaging contrast ratio and the picture purity are remarkably improved. The light absorption structure is integrated in the packaging structure, and a stray light feedback path is cut off through a physical means on the premise that normal light emitting of a display area and electrical connection of an electrode pad are not affected, so that the optical performance of the micro-projection ray machine is improved, the final display effect is guaranteed, and the display effect is improved. Therefore, the technical problem of image quality degradation caused by high reflectivity of the non-display area is effectively solved.

The utility model discloses a reflecting mirror applied to high-power laser, which comprises a base material structure layer, a reflecting dielectric film structure layer is arranged on the reflecting surface of the base material structure layer in a film coating mode, and the reflecting dielectric film structure layer is composed of 46 layers of high-refractive-index film structures and 46 layers of low-refractive-index film structures which are alternately overlapped from inside to outside. The reflector applied to the high-power laser can obtain high reflectivity in the application scene of the high-power laser under the working wave band of 915 + / -10nm, 976 + / -10nm or 1064 + / -10nm. Meanwhile, the dielectric film of the reflector is extremely low in laser absorptivity, and energy loss can be effectively reduced.

A dynamically tunable optical mirror named as a resonant cavity switching (RCS) device and a refractive index modulating (RIM) device are disclosed. The RCS device is comprising a nanoporous piezoelectric III-nitride material layer, such as GaN, AlN, AlScN, AlGaScN or their alloys sandwiched between a high-reflectivity distributed Bragg reflector (DBR) and a lower-reflectivity output DBR. The RIM devise is comprising the nanoporous III-nitride material layer. The nanoporous layer, patterned with interdigital transducers (IDTs), is actuated via surface acoustic waves (SAWs) or electric fields to induce rapid, reversible modulation of its effective refractive index. This enables sub-nanosecond switching between resonant and off-resonant optical states, facilitating efficient energy extraction, optical pulse carving, or phase control.

The utility model discloses a code disc for a reflective encoder, which relates to the technical field of encoder equipment and comprises a glass code disc, a low-reflection film is fixedly connected to the surface of the glass code disc, and a high-reflection film is fixedly connected to one side, far away from the glass code disc, of the low-reflection film. The low-reflection film is formed by plating acid-resistant alkali metal and metal oxide through a vacuum coating machine, the acid-resistant alkali metal comprises niobium, molybdenum, tantalum and hafnium, one of the niobium, the molybdenum, the tantalum and the hafnium is short for H, the metal oxide comprises sio2, sio, al2o3 and zro2, one of the sio, the al2o3 and the zro2 is short for L, and the plating sequence of the acid-resistant alkali metal and the metal oxide is LHLHLHLHLHL, and after the thickness of each layer of the acid-resistant alkali metal and the metal oxide is optimized, the thickness range is 10-150nm, so that the problems that the performance of a traditional material cannot reach an ideal level and the overall effect and the accuracy of equipment are reduced when the traditional glass code disc is in a working environment under high-intensity light or in a scene requiring high reflectivity are solved.

The utility model relates to high-permeability all-light reflection cloth, which belongs to the technical field of all-light reflection cloth and comprises an all-light reflection cloth body, and the all-light reflection cloth body comprises first reflection cloth, second reflection cloth and a high-reflectivity coating. The all-light reflection cloth has the advantages that the all-light reflection cloth body is disassembled into the first reflection cloth body and the second reflection cloth body, so that workers can place the all-light reflection cloth body around crops under the condition that scissors are not needed, and the all-light reflection cloth body can be arranged around the crops through the easy-to-tear strip. According to the full-light reflection cloth body, a worker can cut sleeve holes with corresponding sizes according to the sizes of crop stumps, in the using process of the full-light reflection cloth body, the worker does not need to conduct cutting through scissors in the whole process, time and labor are saved, operation is convenient and fast, when the clamping piece and the clamping groove are in a parallel state, the worker can press the rotating piece to the position below the clamping piece, and the work efficiency is improved. And then the clamping piece is rotated, so that the clamping piece abuts against the rotating piece, and the purpose of fixing the first reflection cloth and the second reflection cloth can be achieved.

The present application belongs to the technical field of digital twinning, and particularly relates to a three-dimensional digital twinning construction and virtual inspection method for conic landforms. The method comprises: synchronously collecting multi-station site cloud data and multi-station hyperspectral image data when a Beidou satellite positioning system second pulse signal is received by a hardware synchronous trigger through joint calibration of a support; registering the multi-station site cloud data based on a high reflectivity spherical target to obtain a conic landform global point cloud, and mapping the multi-station hyperspectral image data to the conic landform global point cloud based on an external parameter matrix to obtain a conic landform spectral point cloud; initializing and iteratively optimizing a three-dimensional Gaussian ellipsoid set from the conic landform spectral point cloud to obtain a conic landform three-dimensional Gaussian ellipsoid digital twinning model. The present application realizes hardware-level synchronous collection and high-precision fusion of multi-source sensor data, and through a three-dimensional Gaussian ellipsoid expression form, the geometric precision and spectral attribute integrity of the model are taken into account.

The application relates to the technical field of robots, and discloses an AI vision positioning method and system for robot automatic assembly, which comprises a composite perception system, an active physical excitation module and a central processing unit; the composite perception system is integrated with a polarization camera, a thermal imager and a structured light projector; and the central processing unit is internally arranged with a physical causal decoupling network and a health state manifold model. The method comprises the following steps: in an offline stage, a physical characteristic enhanced point cloud of a standard part is collected through a detection, excitation and response protocol, so as to train the physical causal decoupling network and construct a health state manifold representing the state of qualified materials; in an online stage, the state of a material to be assembled is diagnosed, and an expected process path connecting the current state and the target state is generated on the manifold. The application solves the positioning and control problems in complex scenes such as high reflectivity and transparency, and realizes high-precision in-situ closed-loop assembly.

The application relates to a reconfigurable metasurface for electrically-controlled scanning of a real-aperture microwave radiometer, which comprises a plurality of array-distributed basic units, the basic unit comprising a top metal patch, a first dielectric layer, a metal reflection layer, a second dielectric layer and a bottom metal layer which are sequentially stacked from top to bottom; the top metal patch comprises two cross-connected I-shaped patches and a triangular metal branch located in the cross region and having a certain gap with the I-shaped patch; the I-shaped patch comprises a straight arm and end arms located at both ends of the straight arm and having a certain gap with the straight arm; a PIN diode is connected between the straight arm and the end arms; the end arms are connected with each other through a metal feed line, and an isolation resistor is arranged on the metal feed line; the application dynamically controls the reflection phase according to the working state of the diode combination, and has high reflectivity and reflection bandwidth and small loss.

The application relates to the technical field of infrared stealth, precise thermal control and electromagnetic compatibility, and particularly discloses a film system structure with visible ultra-high reflectivity, middle-infrared and far-infrared low emissivity and microwave high permeability; the medium stack layer has high reflectivity to visible light; the metal microstructure layer has low emissivity to middle-infrared and far-infrared light and high permeability to microwaves; the film system structure has visible light reflectivity greater than 60%, middle-infrared and far-infrared light emissivity lower than 30% and microwave permeability higher than 60%. The application realizes perfect compatibility of infrared stealth and microwave absorption, keeps infrared low emissivity (epsilon < 0.1) and realizes high permeability (greater than 95%) to 1-18GHz microwave bands. The application solves the thermal failure problem of the composite stealth structure, realizes average visible light reflectivity (greater than 95%) through the medium stack layer, greatly reduces the solar heat load and improves the overall optical performance.

Provided is a swing control device for an optical scanning device, wherein the swing control device swings, around a swing axis, a movable member provided with a reflection mirror for scanning measurement light on the surface thereof. A monitor light receiving element, which irradiates a monitor light reflection member provided on the rear surface of the movable member with monitor light and receives the reflected monitor light, is configured with a one-dimensional image sensor disposed in a direction intersecting the swing axis. The swing control device comprises a swing control unit that controls the swing of the movable member on the basis of the swing characteristics of the movable member detected on the basis of the peak position of the monitor light detected by the one-dimensional image sensor. In the monitor light reflection member, a high reflectance region having a high reflectance and a low reflectance region having a reflectance lower than that of the high reflectance region are formed along the direction intersecting the swing axis, and the area SA of the high reflectance region is set to be smaller than the area SB of the low reflectance region.

The application provides a high-thermal-conductivity heat dissipation integrated composite heat control film for satellites, which comprises a protective layer, a nano heat control film and a graphite film. The nano heat control film comprises a protective layer based on the surface of the film and a three-dimensional micro-nano structure, the graphite film is packaged by hot melt adhesive and is pasted together with the nano heat control film by the hot melt adhesive to form a new high-thermal-conductivity heat dissipation integrated composite heat control film. The application is pasted on the outer surface of a satellite cabin plate or an antenna and the like by silicone rubber, so that the outer surface of the satellite has the characteristics of high reflectivity to the solar spectrum, high emissivity to the infrared spectrum and high thermal conductivity, the uniformity of the temperature field of the whole satellite is improved, the reliability of the single machine in the cabin is improved, the production cycle of the product is short and the product is convenient to implement. The application solves the problems of high heat flux density, complex illumination components and rapid development of future low-orbit satellite constellations, the production cost is significantly reduced, and the commercial batch production of the satellite constellations is facilitated.

A transmitting device, a detection device and a terminal are applied to the technical field of detection, and the transmitting device comprises a first transmitting module and a second transmitting module. Wherein the first transmitting module is used for transmitting a first light beam, the polarization state of the first light beam is a mixed polarization state, and the mixed polarization state light beam is low in energy loss and high in energy density in the transmitting process and has good distance measuring capacity. The first transmitting module is used for transmitting the second light beam, the polarization state of the second light beam is linear polarization, the detection device is suitable for scenes needing higher transmissivity or higher reflectivity, and the anti-interference performance of the detection device can be improved. Furthermore, the first light beam and the second light beam are used for detecting different areas of the object space, composite detection combining mixed polarization detection and polarization detection is carried out on the object space, interference of reflection and the reflection effect on detection is reduced while the distance measuring performance of the detection device is not obviously reduced, and the detection device has higher detection precision.

The invention provides a long-wave infrared laser reflector with a three-medium structure. The long-wave infrared laser reflector structurally comprises a substrate Sub, a transition layer B, a metal layer G, a medium film system C and an air layer A from bottom to top. The dielectric film system C is structurally characterized by being formed by alternately stacking one or more groups of materials with high, medium and low refractive indexes. The invention aims to realize high reflection of a long-wave infrared band. Through meticulous design, three kinds of materials with high, medium and low refractive indexes are reasonably distributed in the reflector. According to the strategy, the absorption of the reflector is effectively reduced by balancing the low absorption of the chalcogenide and the low refractive index of the fluoride, the temperature rise caused by heat absorption is remarkably reduced, and meanwhile, the reflectivity is improved. Therefore, the continuous laser damage threshold value of the reflecting mirror is greatly enhanced theoretically, and the reflecting mirror shows higher stability and tolerance when facing continuous laser irradiation.

The utility model discloses a heat preservation clamping plate material for a building refrigeration house, and relates to the technical field of heat preservation clamping plate materials, the heat preservation clamping plate material comprises a heat preservation material body, supporting plates are fixed to the two sides of the heat preservation material body, a connecting plate is fixed between the two supporting plates, and the connecting plate is fixedly connected with the heat preservation material body; a hydrophobic layer is arranged on the inner side of the thermal insulation material body, the hydrophobic layer is a hydrophobic agent coating, a reflecting layer is arranged on the outer side of the thermal insulation material body, and the reflecting layer is a reflecting paint coating. The hydrophobic layer formed by coating the water repellent is located on the inner wall of the refrigeration house, so that the inner wall of the refrigeration house has good hydrophobicity, moisture in the air can be effectively prevented from making contact with the clamping plates, and heat preservation performance reduction caused by moisture condensation is reduced. The reflecting layer formed by coating the reflecting coating is located on the outer wall of the refrigeration house, the refrigeration house has extremely high reflectivity through the reflecting layer, most heat can be reflected, and then the heat preservation effect of the refrigeration house is further improved.

The invention discloses a full-wave-band high-reflectivity metal composite film structure and a preparation method thereof, and relates to the technical field of semiconductor light-emitting elements. The metal composite film structure is applied to a light-emitting element, light enters from one side of an adhesion layer of the metal composite film structure, and the metal composite film structure at least comprises the adhesion layer with the thickness ranging from 0.5 nm to 2.5 nm; the composite reflecting layer is arranged on the adhesion layer, and the composite reflecting layer is of a stacked structure of a silver layer and an aluminum layer, or is a silver-aluminum alloy layer. The invention further discloses a preparation method of the structure, a vacuum electron beam evaporation process is adopted, when the composite reflecting layer is deposited, the evaporation rate is controlled to be 1-15 angstroms per second, and cavity heating at the temperature of 40-70 DEG C is supplemented. The invention preferably also comprises a double-layer protection structure consisting of atomic layer deposited aluminum oxide and chemical vapor deposited silicon dioxide. According to the invention, the problems of low reflectivity, narrow wave band, contradiction between adhesive force and reflectivity, high-cost sputtering process damage and the like of a traditional reflector are solved, and the advantages of full-wave band high reflectivity, high adhesive force, high reliability, low cost and low damage preparation are realized.

The embodiment of the application provides a kind of based on integrating sphere light source's photosensitive diode multispectral calibration device and method, for by dark current measurement, photocurrent correction and wavelength response fitting, photosensitive diode array is carried out wide band multispectral calibration.The device of the application includes integrating sphere device, multi-band adjustable light source module, the photosensitive diode array to be calibrated and control and analysis unit;The inner wall of integrating sphere device is high reflectivity diffuse reflection material;Integrating sphere device further includes trap detector, and trap detector is used for real-time monitoring the reflection loss of the inner wall of integrating sphere device;Trap detector is connected with control and analysis unit communication;Multi-band adjustable light source module is accessed integrating sphere device;The photosensitive diode array to be calibrated is composed of multiple photosensitive diodes;Control and analysis unit and multi-band adjustable light source module, the photosensitive diode array to be calibrated establish communication connection.

This invention provides a method and apparatus for 3D tooth reconstruction based on multi-view geometric priors and specular Gaussian representation. The method first acquires multi-view image data containing teeth and gingiva. A multi-view geometric estimation module predicts and globally aligns dense 3D point maps to obtain an initial point cloud, camera intrinsic and extrinsic parameters, and a depth map. Based on this, a Gaussian primitive set is initialized and input into a specular Gaussian reconstruction module, where relevant parameters are combined to optimize the reconstruction. This module introduces depth and normal losses based on the color target, supervises and reduces the weight of highlight regions within the region of interest, and finally outputs the 3D reconstruction result. This invention can improve the stability and geometric accuracy of tooth reconstruction under high reflectivity and weak texture, enhance specular reflection and highlight expression capabilities, and balance the detailed reconstruction of tooth hard tissue with the geometric and appearance effects of gingival soft tissue, thereby improving the integrity of oral scene reconstruction and its clinical application value.

The invention provides a vehicle with a welded bus bar connector. In a high voltage vehicle electronic system, laser welding may be used to mechanically and electrically connect components to a bus bar. To overcome the problems associated with the high reflectance of materials typically used for these applications, laser applied surface treatments are used on components. The surface treatment changes several properties of the surface, including reflectivity, thereby improving the quality of the resulting weld.

The invention relates to a semi-permeable and semi-reflective adhesive for whitening a semi-permeable and semi-reflective polarizer and a preparation method thereof, and belongs to the field of preparation of reflective adhesives for semi-permeable and semi-reflective polarizers, the semi-permeable and semi-reflective adhesive is prepared from the following substances in parts by weight: 100 parts of acrylic resin glue, 0.15 part of isocyanate, 0.1 part of silane coupling agent, 25 parts of ethyl acetate, 1-2 parts of acrylic resin gloss oil and 4 parts of pearl powder. According to the semi-permeable and semi-reflective polaroid, the acrylic resin gloss oil with high reflectivity is added into the reflective adhesive, so that the brightness of the semi-permeable layer of the semi-permeable and semi-reflective polaroid can be improved, the brightness and whiteness of semi-permeable liquid crystal display can be improved, and the problem that the display effect is dark is solved.

The present application belongs to the cross technical field of electromagnetic wave absorbing material and radiation cooling material, and specifically provides a cellulose-coated radiation cooling wave absorber and a preparation method thereof, to solve the problem that the existing wave absorber is easy to absorb excessive solar radiation in an outdoor environment, causing device temperature rise and unstable operation. The present application uses PEDOT aerogel as the base body and introduces cellulose aerogel as the surface coating layer. On the one hand, high reflectivity is achieved in the visible light band to reduce solar radiation absorption, and on the other hand, high emissivity is achieved in the near-infrared band to release heat energy and suppress temperature rise, even achieving radiation cooling effect. At the same time, the cellulose aerogel is used as a perfect impedance matching layer to make the incident electromagnetic wave completely enter the material inside, improving the absorption efficiency. Furthermore, the PEDOT and cellulose are compounded to form an upper and lower structure network, so that the incident electromagnetic wave is reflected and scattered multiple times between the layers, prolonging the electromagnetic wave propagation path and further improving the absorption efficiency.

The utility model discloses a grid line structure and a solar cell, the grid line structure is provided with an upper end and a lower end in the height direction, the upper end is configured to be arranged in a protruding mode in the width direction of the grid line structure along the direction far away from the lower end, and the projection of the upper end in the height direction is located in the range of the lower end. According to the grid line structure and the solar cell provided by the utility model, the grid line structure also has ultrahigh reflectivity, can reduce the equivalent shading area of the surface of the cell, can replace a triangular conductive wire stacked gate assembly in the current industry, and is higher in stability and better in wear resistance compared with a triangular conductive wire.

The invention relates to a method for manufacturing a curved reflector, which comprises the steps of glass fine carving, hot bending forming, grinding and polishing and vacuum coating which are carried out in sequence, and an inspection procedure is set between the steps to form whole-process quality monitoring. In the glass fine carving step, a substrate with an accurate size is provided for hot bending, and a special negative pressure adsorption tool and 3D fine carving of a gyro-shaped grinding head can be adopted to realize high-precision secondary modification. In the hot bending forming step, glass deformation is controlled and defects are inhibited through an accurate process including preheating, segmented pressurizing and annealing and in combination with a mold with an overlapped concave-convex structure and a protective skin. The grinding and polishing step is used for correcting surface error and improving surface smoothness. According to the vacuum coating step, a metal-medium composite reflecting film system is deposited, a profiling tool is used in a matched mode, high reflectivity and film layer stability are achieved, and the problems of surface type control, defect suppression, mass production consistency and the like in the manufacturing process of the low-curvature curved-surface reflecting mirror are systematically solved.

The utility model relates to the technical field of measuring instruments, in particular to a measuring instrument with a coaxial light source, which comprises a measuring instrument body, the measuring instrument body comprises a rack and a scanning mechanism, a camera end is arranged at the bottom end of the scanning mechanism, a limiting frame is arranged at the camera end, a switching sliding block is arranged below the limiting frame, and a pair of observation windows is arranged below the switching sliding block. Lighting lamps are uniformly arranged around one observation window, a coaxial light source structure is arranged on the lower side of the other observation window, a stepping lead screw motor is arranged on one side of the limiting frame, a rotating lead screw is arranged in the stepping lead screw motor, a storage frame is arranged on the rack, a telescopic rod is arranged in the storage frame, a connecting plate is arranged at one end of the telescopic rod, a pair of gears is arranged on the connecting plate, and clamping jaws are arranged on the side faces of the gears. A rack is arranged at the output end of the miniature telescopic rod. The utility model solves the problems that the conventional quadratic element measuring instrument is inconvenient to measure the size of a transparent or highly reflective workpiece, generally does not have a flaw detection function, and is inconvenient to fix the positions of workpieces such as screws, pin shafts and the like.