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35results about How to "Guaranteed Optical Performance" patented technology
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Projection system and optical display apparatus
ActiveCN119414601Acompact structureImprove image qualityProjectorsOptical elementsPrismProjection system
The invention provides a projection system and optical display equipment. The projection system comprises a projection lens, a color combination prism and an image source, the projection lens comprises a first lens, a second lens, a third lens and a fourth lens, and the curvature of the lenses and the focal length of the projection lens meet the following conditions:-0.1 < (K1 + K2) / f < 0.1, 0.2 < (K3 + K4) / f < 0.35,-0.1 < (K5 + K6) / f < 0 and-0.3 < (K7 + K8) / f <-0.1; k1 and K2 are respectively the curvature of the surface, far away from the image source, of the first lens and the curvature of the surface, close to the image source, of the first lens; k3 and K4 are respectively the curvature of the surface, far away from the image source, of the second lens and the curvature of the surface, close to the image source, of the second lens; k5 and K6 are respectively the curvature of the surface, far away from the image source, of the third lens and the curvature of the surface, close to the image source, of the third lens; k7 and K8 are the curvature of the surface, far away from the image source, of the fourth lens and the curvature of the surface, close to the image source, of the fourth lens respectively; f is the focal length of the projection lens.
Owner:GOERTEK OPTICAL TECH CO LTD
Common external cavity line width compression system based on transmission grating
ActiveCN119297719Aincrease profitImprove stabilityLaser detailsSemiconductor lasersBeam splitterGrating
The invention belongs to the technical field of blue light semiconductor laser, and discloses a common external cavity line width compression system based on a transmission grating, which comprises N blue light modules, a common external cavity module, an output coupling module and an optical fiber focusing output module, the common external cavity module comprises a first cubic optical splitter, a transmission grating and a first reflector; a blue light beam output by any blue light module is divided into reflected light and transmission light after passing through the first cubic optical splitter; the reflected light passes through the transmission grating, then returns along an original light path through the first reflector and is split again at the first cubic optical splitter, one part of light beams return to any blue light module along the original light path, and the other part of light beams are transmitted to the other blue light modules respectively; the laser beam and a light beam returned along an original light path in any blue light module jointly form littman external cavity feedback of any blue light module so as to realize line width compression; according to the invention, high-power and narrow-linewidth laser output can be realized, the expandability of the system is improved, and the structural complexity of the system is reduced.
Owner:HUAZHONG UNIV OF SCI & TECH
Underway temperature and humidity laser radar dynamic observation system and method
InactiveCN119575413Areduce distractionsEnsure data stabilityIndication of weather conditions using multiple variablesElectromagnetic wave reradiationExtreme weatherSimulation
The invention discloses a navigation type temperature and humidity laser radar dynamic observation system and method, and the system achieves the large-range and high-precision dynamic observation through the deep integration of a temperature and humidity laser radar, a radar fixing and damping structure, a vehicle-mounted temperature control system, an optical skylight, a Beidou positioning system, a terminal display system and a communication system. The radar fixing and damping structure is combined with a vehicle-mounted temperature control system, so that the influence of road surface vibration and environment change on the monitoring precision is effectively eliminated, and stable operation of equipment under complex road conditions and extreme weather conditions is ensured. The optical skylight design not only ensures efficient transmission of laser signals, but also protects external pollution, and further improves the observation reliability. Through combination of a Beidou positioning system and a GIS map, a dynamic distribution diagram of temperature, humidity and aerosol data is generated in real time, and the multi-dimensional real-time monitoring requirement is met. According to the method, the observation flexibility and applicability are remarkably improved.
Owner:WUXI ZHONGKE OPTOELECTRONICS TECH CO LTD
Thick-wall part for vehicle lamp and lamp decoration ring
ActiveCN222634392USolve the problem of light leakageGuaranteed Optical PerformanceNon-electric lightingMechanical apparatusEngineeringThick wall
The thick-wall part comprises a light source incidence reflecting face and a light emitting face, a slotting notch used for installing the lamp decoration ring is formed in the side, where the light emitting face is located, of the thick-wall part, and a shading device is arranged at the bottom of the slotting notch. According to the technical scheme, the shading device is arranged on the bottom surface of the bottom of the slotted notch aiming at the slotted notch existing in the disconnected thick-wall part, so that light entering from the light source incident reflecting surface can be effectively prevented from being emitted from the part, and the problem of light leakage is solved. The structure is simple, operation is convenient, and the optical effect of the automobile lamp can be guaranteed.
Owner:CHANGZHOU XINGYU AUTOMOTIVE LIGHTING SYST CO LTD
Preparation method of grating structure, grating structure and near-to-eye display device
PendingCN119620270AGuaranteed Optical Performanceavoid reactionPolarising elementsDiffraction gratingsGratingDisplay device
The embodiment of the invention provides a preparation method of a grating structure, the grating structure and a near-to-eye display device. The method comprises the steps that an isolation layer is formed on the surface of a grating layer, and the grating layer is provided with a to-be-thinned area; forming a mask layer on the surface, deviating from the grating layer, of the isolation layer, wherein the mask layer is provided with a pattern area; etching positions, corresponding to the pattern area, of the isolation layer and the area to be thinned; and removing the mask layer and the isolation layer. According to the technical scheme, reaction or dissolution between the mask layer and the grating layer is prevented, and damage to the structure of the grating layer is avoided.
Owner:ZHUHAI MOJIE TECH CO LTD
Light leakage prevention diffraction optical waveguide
PendingCN119414512AImprove functionalityImprove efficiencyPlanar/plate-like light guidesDiffraction gratingsBlazed gratingLight diffraction
The invention relates to a light leakage prevention diffraction optical waveguide which comprises a waveguide substrate, an input diffraction optical element and an output diffraction optical element. Incident light is coupled into the waveguide substrate through the input diffractive optical element, and is coupled out of the waveguide substrate step by step through the output diffractive optical element after being totally reflected in the waveguide substrate; the input diffractive optical element and the output diffractive optical element are respectively and independently arranged to be of a periodic grating structure, and a grating of the output diffractive optical element is arranged to be an asymmetric surface relief grating. The grating tilt direction of the output diffractive optical element and at least one further grating structure parameter are modulated such that the diffraction efficiency of the output diffractive optical element towards the out-coupling side exceeds the diffraction efficiency away from the out-coupling side, and the diffraction efficiency towards the out-coupling side varies spatially. According to the invention, the inclined grating or blazed grating easy to process is used in the coupling-out area, and the optical performance of the diffraction optical waveguide is considered by modulating the grating parameters, so that the effects of effectively weakening light leakage and ensuring the privacy of a user are achieved.
Owner:MOLDNANO (HANGZHOU) TECHNOLOGY CO LTD
A phase contrast objective lens for microscope
ActiveCN113219642Bgood optical performanceGuaranteed Optical PerformanceMicroscopesOphthalmologyRefractive index
The present invention relates to the field of optical imaging technology, and discloses a microscope phase contrast objective lens, comprising a first lens group with positive refractive power, a second lens group with positive refractive power, an object plane and a cover glass, wherein the first lens group is located below the second lens group, and the absolute value of the refractive power of the first lens group is greater than the absolute value of the refractive power of the second lens group. The present invention is arranged by setting the first lens group and the second lens group in the phase contrast objective optical system, and by limiting the focal length, refractive index, Abbe number and thickness of the first lens group and the second lens group, so that the field curvature, distortion and aberration sensitivity of the phase contrast objective optical system are further improved, thereby ensuring the optical performance of the phase contrast objective optical system, so that the objective optical system has the characteristics of small magnification, large numerical aperture, high resolution performance, small chromatic aberration under a large field of view, small number of lenses, and short total length of the objective optical system.
Owner:MOTIC CHINA GROUP CO LTD
Industrial lens and optical equipment
ActiveCN119596508AGuaranteed Optical Performancesmall color differenceOptical elementsAngle of incidenceOphthalmology
The invention discloses an industrial lens and optical equipment, the industrial lens comprises a first lens group, a diaphragm and a second lens group which are coaxially arranged in sequence, the first lens group comprises a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged from an object space to an image space along an optical axis, the first lens, the second lens and the fourth lens have positive focal power, and the third lens has negative focal power; the second lens group comprises a fifth lens, a sixth lens, a seventh lens and an eighth lens which are sequentially arranged from the object space to the image space along the optical axis, the fifth lens, the seventh lens and the eighth lens have positive focal power, and the sixth lens has negative focal power; the industrial lens satisfies the following relational expression: 4.3 < = FOV / CRA < = 5.6; 13 < = (fu1 + fu2) / IH < = 26; fOV / (D * TTL) > = 0.025; wherein FOV is the maximum field angle of the industrial lens, CRA is the main ray incident angle of the industrial lens, fu1 is the effective focal length of the first lens group in the industrial lens, fu2 is the effective focal length of the second lens group in the industrial lens, IH is the maximum image plane height of the industrial lens, D is the head aperture size of the industrial lens, and RA is the main ray incident angle of the industrial lens. TTL is the total optical length of the industrial lens. The miniature industrial lens is large in image plane, low in distortion, low in chromatic aberration and high in resolution.
Owner:SUZHOU LIGHTLNS OPTICAL TECH
Wafer recovery method, diffractive optical waveguide manufacturing method, and diffractive optical waveguide
PendingCN119493212Aachieve recyclingGood recycling stabilityDiffraction gratingsPhotomechanical exposure apparatusCarbide siliconGrating
The invention relates to a wafer recovery method, a diffractive optical waveguide manufacturing method, and a diffractive optical waveguide. The wafer recycling method comprises the following steps that a diffraction optical waveguide to be recycled is provided, the diffraction optical waveguide to be recycled comprises a substrate wafer, a cut-off layer and a grating wafer which are arranged in a stacked mode, and the surface of the cut-off layer and / or the surface of the grating wafer have defects caused by etching; carrying out etching and / or chemical mechanical polishing on the defect surface of the diffraction optical waveguide to be recycled until the preset surface roughness is reached, so as to obtain a recycled wafer; the manufacturing method of the diffraction optical waveguide comprises the following steps of forming a thin film wafer on the surface of a cut-off layer of a receiving sheet, and carrying out etching treatment on the surface of the thin film wafer, and S3, before manufacturing is completed, if the cut-off layer and / or the surface of a grating wafer have defects caused by etching, preparing a recycled wafer according to the recycling method. According to the method, recycling of unqualified products is achieved, the production cost is reduced, the stability of the performance of the recycled products is improved, and the method is suitable for medium-batch and large-batch machining and manufacturing of the silicon carbide diffraction optical waveguides.
Owner:MOLDNANO (HANGZHOU) TECHNOLOGY CO LTD
A kind of temperature-sensitive polymer microsphere with self-regulating spherical shell permeability and preparation method thereof
ActiveCN115926204BIncreased pore sizesmall pore sizeMicroballoon preparationMicrocapsule preparation
The present invention discloses a thermosensitive spherical shell permeability self-regulating polymer microsphere and a preparation method, specifically, thermosensitive bidirectional shape memory nanoparticles are compounded in the spherical shell to act as a "micro switch", and the shrinkage / recovery effect generated by the spherical shell in response to temperature rise / fall is used to increase / decrease the pore size in the spherical shell, thereby regulating the spherical shell permeability. In this way, the pore size of the spherical shell can be increased without destroying the spherical shell structure to improve the water vapor permeability during high-temperature drying and accelerate the water dissipation rate of the microsphere kernel; the pore size of the spherical shell is reduced at room temperature after drying, ensuring the mechanical properties and optical properties required for the application of core-shell polymer microspheres. The present invention can significantly improve the drying efficiency of water-containing core-shell polymer microspheres and help high-throughput manufacturing of polymer hollow microspheres.
Owner:SOUTHEAST UNIV +1
Camera module and electronic device
ActiveCN224721923UEnsure optical modulation transfer function characteristicsGuaranteed Optical Performance
Embodiments of the present application relate to the technical field of camera modules, and specifically relate to a camera module and an electronic device. Embodiments of the present application provide a camera module, comprising: a shell, a lens assembly and a driving assembly, wherein the shell comprises an upper cover and a base arranged along a first direction, the lens assembly comprises a lens carrier and a lens, the lens carrier is arranged in the shell and can move relative to the shell, the lens carrier is provided with a first protruding structure and a second protruding structure, the first protruding structure is used for abutting against the upper cover, the second protruding structure is used for abutting against the base, the lens is arranged on the lens carrier, the driving assembly comprises a driving magnet and a driving coil, the driving magnet is arranged on the lens carrier, the driving coil is arranged on the shell, and the driving coil is used for driving the driving magnet to move the lens assembly, the lens carrier is formed by only one single component, which is conducive to reducing the size of the lens carrier, and further conducive to the miniaturization of the camera module and the electronic device.
Owner:NANCHANG OFILM HUAGUANG TECH CO LTD
A positioning mold for the opening of a reflector bowl
ActiveCN224643842UReduce included angle errorGuaranteed Optical Performance
This utility model relates to the field of machining technology, and in particular to a positioning mold for opening holes in automotive reflectors. It includes a main mold plate and an electronic level fixed horizontally on the main mold plate. The main mold plate has openings adapted to the position of the headlight mounting rod. The main mold plate also has a positioning post passing through a reference hole at the bottom of the reflector and coaxial with the optical axis of the reflector. A fastener is fitted onto the positioning post, passing through the bottom of the reflector and positioned between the main mold plate and the reflector. A first chuck is fitted onto the fastener to limit and fix the bottom of the reflector. A locking nut is also fitted onto the fastener to lock the reflector in place. In this utility model, through optical axis reference transmission and closed-loop control of the electronic level, the hole position can be perfectly matched with the headlight mounting rod, effectively reducing the error in the angle between the opening axis and the optical axis, and avoiding optical path misalignment caused by assembly stress.
Owner:EASDAR OPTOELECTRONICS (GUANGDONG) CO LTD
Lens packaging scratch prevention cushioning pad device
This utility model discloses a scratch-resistant cushioning pad device for lens packaging, specifically relating to the field of lens packaging technology. It includes a base for support, on which a cushioning support assembly is mounted. The cushioning support assembly includes a pressure plate positioned on top of the base. This utility model achieves comprehensive protection for the lens through multiple structural synergies. The placement groove of the inner liner precisely matches the lens, and the smooth inner wall treatment prevents friction scratches during placement. The sponge cushioning pads at the top of the pad and the bottom of the restraint cover not only absorb vibration and impact through elastic deformation but also form a soft contact interface, completely isolating the lens from direct contact with the hard structure and effectively preventing scratches caused by dust, particles, and other impurities. The coaxial design of the restraint cover and the contact rod ensures uniform force on the lens, eliminating pressure point damage caused by concentrated local pressure, fundamentally guaranteeing the flatness and smoothness of the lens surface, and maintaining its original optical performance.
Owner:常州启元光学有限公司
Polarization beam splitter parameter tuning method and system based on micro-nano grating
ActiveCN119575649AGuaranteed Optical PerformanceImprove tuning efficiencyOptical elementsOptical propertyEngineering
The invention relates to the technical field of micro-nano optics, in particular to a polarization beam splitter parameter tuning method and system based on a micro-nano grating, and the method comprises the steps: obtaining test optical characteristic parameters of a polarization beam splitter to be evaluated, and judging whether the parameter tuning needs to be carried out on the polarization beam splitter to be evaluated or not according to the test optical characteristic parameters and preset optical characteristic parameters; if parameter tuning needs to be carried out on the to-be-evaluated polarization beam splitter, to-be-tuned optical characteristic parameters of the to-be-tuned polarization beam splitter are acquired; determining singular structure characteristic parameters of the polarization beam splitter needing parameter tuning according to the optical characteristic parameters to be tuned; and carrying out optimization processing on the singular structure characteristic parameters of the polarization beam splitter needing parameter tuning. According to the invention, the parameter tuning efficiency of the polarization beam splitter is effectively improved, the structural factors influencing the performance are accurately positioned, and finally the optical performance of the polarization beam splitter is ensured to meet the preset requirements.
Owner:GUANGDONG UNIV OF TECH
An asymmetric MZ electro-optic modulator
This invention discloses an asymmetric MZ electro-optic modulator, including an input coupler, an output coupler, and a first interference arm and a second interference arm connected in parallel between the output terminal of the input coupler and the input terminal of the output coupler. The first interference arm includes two first arc segments and a second arc segment connecting the two first arc segments. The second interference arm includes two third arc segments and a fourth arc segment connecting the two third arc segments. The opening direction of the second arc segment is opposite to the opening direction of the fourth arc segment. The two ends of the second interference arm are respectively connected to the output terminal of the input coupler and the input terminal of the output coupler through compensation segments. There is a preset target optical path difference between the optical path of the first interference arm and the total optical path of the second interference arm and the compensation segments at both ends. This invention features a compact layout, precisely adjustable optical path difference, and low transmission loss.
Owner:LIGHT-BASED INTELLIGENT TECHNOLOGY (SHANGHAI) CO LTD
Fiber optic connector housing assembly apparatus and assembly process
ActiveCN122307835BGuaranteed Optical PerformanceGuaranteed mechanical stability
The application belongs to the technical field of electrical components, and particularly relates to an equipment for connecting electrical conductors, especially to an optical fiber connector shell assembling equipment and an assembling process thereof; wherein one kind of optical fiber connector shell assembling equipment comprises: a driving piece which is rotationally arranged in the working position and has a limiting groove in the middle part for limiting a ceramic ferrule; a positioning sheet which is liftably arranged on the outer wall of the driving piece and is linked with the driving piece; and at least two limiting plates which are slidingly arranged on the side wall of the positioning sheet and are used for limiting springs; wherein, after the ceramic ferrule is placed in the limiting groove, the spring manipulator sets the spring on the outer wall of the ceramic ferrule from top to bottom; the driving piece drives the positioning sheet to move downward, and the limiting plate extrudes the spring to compress, so as to expose the ceramic ferrule; the plastic upper shell is set on the outer wall of the ceramic ferrule from top to bottom, and the plastic upper shell pushes the limiting plate to shrink into the positioning sheet, so that the compressed spring is reset upward to be inserted into the plastic upper shell.
Owner:HUBERSUHNER CABLE & CONNECTOR MFG (CHANGZHOU) CO LTD
Novel high-precision free-form surface reflector circulation production device
ActiveCN222573742UShorter injection molding cycle timesCool evenlyConveyorsLoading/unloadingSprocketAir blower
Owner:FUJIAN FULAN OPTICAL CO LTD
LED combined lens and preparation process thereof
PendingCN119642138AImprove refraction effectImprove utilization efficiencySemiconductor devices for light sourcesLensPolymethyl methacrylateMethyl methacrylate
The invention provides an LED combined lens and a preparation process thereof. A plurality of elliptical lenses are integrally formed on a lens main body; the raw materials of the elliptical lens comprise polymethyl methacrylate, zinc oxide, selenium bismuthide and silver; wherein the raw materials comprise the following components in percentage by mass: 57%-70% of polymethyl methacrylate; 10%-20% of zinc oxide; 5%-15% of selenium bismuthide; 2%-8% of silver; according to the combined lens, through special material combination and structural design, the light refraction effect is remarkably improved, compared with a traditional single-material lens, the propagation direction and distribution of light can be more effectively controlled, the light utilization efficiency is greatly improved, emergent light is more uniform and concentrated, and the illumination brightness and definition are effectively improved.
Owner:HANGZHOU BOSHANG SHENGXIN ENERGY TECH CO LTD
Display device and cabinet air conditioner
ActiveCN222653610UImprove the display effectimprove clarityIlluminated signsComputer hardwareDisplay board
The utility model relates to the technical field of household appliances, in particular to a display device and a cabinet air conditioner, and aims to solve the problem that a display panel of an existing cabinet air conditioner displays unclear color icons. Therefore, the display device comprises a shell, a display panel and a diaphragm, and the shell is provided with a display mask; the display panel is arranged on one side of the display mask, patterns and multicolor lamp beads are arranged on the display panel, and the multicolor lamp beads can provide light rays of various colors for the patterns so that the patterns can display different colors; the diaphragm is attached to the display panel, and the patterns can be displayed through the diaphragm after color development. Through the structural arrangement, the double image of the pattern can be avoided, and the definition and the color saturation of the pattern are improved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +2
A galvanometer focal length height adjusting device
ActiveCN224687967UGuaranteed Optical PerformanceConsistent energy densityGalvanometerDivergence angle
The utility model relates to printing equipment technical field, especially a galvanometer focal length height adjusting device, including the base mechanism that inside is provided with horizontal passage, the upper side wall of base mechanism is equipped in galvanometer mechanism, transmission mechanism is equipped in horizontal passage, transmission mechanism protrudes from the upper side wall and is connected with galvanometer mechanism. By setting the transmission mechanism, the horizontal movement in the first preset direction is converted into the vertical movement in the second preset direction, without involving the adjustment of optical lenses such as collimating lens group, avoiding the problem that the value of focused light beam M 2 changes due to the change of beam divergence angle in the prior art, ensuring the consistency of energy density after each laser focusing, and avoiding the poor printing quality caused by uneven energy from the root, in addition, directly adjusting the distance from the galvanometer mechanism to the working plane provides hardware support for the consistency adjustment of multiple laser focal heights, solving the problem of poor printing product quality caused by the difference in focal height plane during the cooperative work of multiple lasers.
Owner:SHENZHEN ZHONGZHIXINYING PRECISION TECH CO LTD
Chip structure and wafer level packaging method
The invention discloses a chip structure and a wafer level packaging method.The chip structure comprises a first base layer, a metal structure and a thin film layer, the first base layer comprises a first surface, the first surface comprises a first area and a second area, the metal structure is located in the first area, and the thin film layer is located in the second area. The thin film layer covers the surface, deviating from the first region, of the metal structure and extends to the second region; therefore, the film layer is prevented from being damaged during forming.
Owner:CHINA WAFER LEVEL CSP
An immersion microscope objective
ActiveCN112526737Bgood optical performanceimprove distortionMicroscopesOptical propertyRefractive index
The present invention relates to the field of optical technology, and specifically to an immersion microscope objective lens, wherein a cover glass is arranged on one side of the object surface, and a first lens group, a second lens group and a third lens group are arranged in sequence on one side of the cover glass, and a liquid is arranged between the cover glass and the first lens group. The present invention arranges the first lens group, the second lens group and the third lens group in the immersion microscope objective lens optical system, wherein the first lens group has positive refractive power, the second lens group has positive refractive power, and the third lens group has negative refractive power, so that the entire immersion microscope objective lens optical system has good optical performance, and by limiting the focal distance, refractive index, Abbe number and thickness of the first lens group and the second lens group, the field curvature, distortion and aberration sensitivity of the objective lens optical system are further improved, thereby ensuring the optical performance of the immersion microscope objective lens optical system.
Owner:MOTIC CHINA GROUP CO LTD
Optical photographic lens
ActiveCN222636368UGuaranteed Optical PerformanceReduce deformationMountingsOphthalmologyOptical axis
The utility model discloses an optical photographic lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and a plurality of spacing elements, wherein the first lens is configured to enable light entering the first lens from an object side along a Y optical axis to be reflected and then to be emitted along an X optical axis perpendicular to the Y optical axis; the second lens, the third lens and the seventh lens are sequentially arranged from the first lens to an image side along the X optical axis; the plurality of spacing elements at least comprise a second spacing element which is positioned between the second lens and the third lens and is in direct contact with the image side surface of the second lens, and a third spacing element which is positioned between the third lens and the fourth lens and is in direct contact with the image side surface of the third lens. The maximum thickness CP2 of the second spacing element in the X-optical axis direction, the maximum thickness CP3 of the third spacing element in the X-optical axis direction, the air spacing T23 of the second lens and the third lens on the X-optical axis, and the curvature radii R5 and R6 of the object side surface and the image side surface of the third lens satisfy 2.9 < CP2 / T23 < 6.0 and 65.0 < (R5 * CP2) / (R6 * CP3) < 142.0.
Owner:ZHEJIANG SUNNY OPTICAL CO LTD
Projection wall covering
ActiveCN224281832Uhigh weaving densityLow weave densityCovering/liningsLayered productsYarnMaterials science
This utility model discloses a projection wallcovering, relating to the field of wallcoverings. Its key technical features include an inner layer and an outer layer. A first connector is fixedly connected to the side of the inner layer away from the wall, and a second connector is fixedly connected to the side of the outer layer near the inner layer. The second connector is detachably connected to the first connector. The weave density of the inner layer is lower than that of the outer layer. In this utility model, when projection is needed, the outer layer is fixed onto the inner layer. The outer layer has a higher weave density and is flatter, and its surface is coated with a titanium dioxide coating to improve reflectivity, ensuring the optical effect of the outer layer's side away from the wall when reflecting projected light. The inner layer has a lower weave density, and its breathability is improved by the absence of padding yarn. Combined with the breathability of the linen yarn itself, this ensures the intensity of gas exchange between the two sides of the inner layer.
Owner:SHAOXING LANGSHI TEXTILE TECH CO LTD
Zoom lens compensation group
PendingCN119667922AImprove image qualityGuaranteed Optical PerformanceMountingsOphthalmologyImaging quality
The invention provides a zoom lens compensation group, the number of lenses with focal power is five, the zoom lens compensation group comprises a lens group, a spacing element group and a lens barrel, and the lens group and the spacing element group are accommodated in the lens barrel; wherein the air interval T12 between the first lens and the second lens on the optical axis of the zoom lens compensation group and the air interval T23 between the second lens and the third lens on the optical axis meet the condition that T12 / T23 is greater than or equal to 12.10 and less than or equal to 14.81; the effective focal length f2 of the second lens, the interval EP12 between the first spacing element and the second spacing element along the optical axis direction, and the air interval T12 between the first lens and the second lens on the optical axis satisfy the following condition: 5.99 < = f2 / (EP12-T12) < = 6.63. The zoom lens compensation group solves the problem that the assembling stability and high image quality of the zoom lens compensation group in the prior art cannot be considered at the same time.
Owner:ZHEJIANG SUNNY OPTICAL CO LTD
Device and method for inhibiting scrap pollution in EUV light source
InactiveCN119620562Aavoid enteringfast flowPhotomechanical exposure apparatusMicrolithography exposure apparatusHigh fluxMechanical engineering
The invention relates to the technical field of photoetching, in particular to a device and a method for inhibiting debris pollution in an EUV light source, and the device for inhibiting debris pollution in the EUV light source comprises a conical barrel body, one end, close to a conical tip, of the conical barrel body is provided with a filter fixing piece, and one end, close to a conical bottom, of the conical barrel body is provided with an EUV collecting mirror fixing part; the filter is arranged at the filter fixing piece; the EUV collecting mirror is arranged on the EUV collecting mirror fixing part; the blowing needle head is arranged at one end, close to the filter sheet, of the conical barrel body. The device for inhibiting scrap pollution in the EUV light source is of a conical barrel structure, the filter is loaded inside the front end of the conical barrel body, the blowing needle is loaded outside the front end of the conical barrel body, and the EUV collecting mirror is loaded inside the rear end of the conical barrel body. According to the device, the speed of chippings generated in a plasma area is reduced through local high-flux airflow injection of the blowing needle head, the chippings are blocked by the filter piece, and the EUV collecting mirror is effectively protected.
Owner:SHENZHEN YIYOUWEI LIGHT TECH CO LTD
Coaxial multi-band reflective derotation optical system
ActiveCN110673317BGuaranteed Optical Performancehigh quality imageOptical elementsOptic systemMaterials science
The present invention discloses a coaxial multi-band reflective derotation optical system, which comprises: a scanning component; an imaging component, the imaging component and the scanning component are arranged at intervals along a first direction; a reflecting component, the reflecting component is rotatably arranged between the scanning component and the imaging component; the light is incident on the reflecting component after passing through the scanning component, and the light is incident on the imaging component after being reflected multiple times in the reflecting component. By adopting the present invention, the reflecting component is used to reflect the light multiple times to realize the derotation function, which not only makes the derotation optical system suitable for multi-band light, but also ensures the optical performance and high-quality image quality of the derotation optical system.
Owner:11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
A water-permeable transparent PVC electrostatic film and a method for preparing the same
PendingCN122278082AGuaranteed Optical PerformanceImprove water resistancePhosphoric Acid EstersPolymer science
This invention belongs to the field of PVC membrane technology, specifically relating to a water-permeable transparent PVC electrostatic membrane and its preparation method. The water-permeable transparent PVC electrostatic membrane provided by this invention comprises PVC resin powder, a composite plasticizer, a water-resistant modifier, an electrostatic reinforcing agent, a composite stabilizer, a transparent modifier, a filler, an anti-migration agent, and stearate. This invention uses waterborne polyurethane and γ-methacryloyloxypropyltrimethoxysilane as a crosslinking compound as a water-resistant modifier, effectively improving the water resistance of the PVC electrostatic membrane; it uses diallylamine and epichlorohydrin to prepare a heteroazacyclobutane structure, which is then copolymerized with allyltrimethylammonium chloride to obtain an electrostatic reinforcing agent, improving the electrostatic adsorption force of the PVC electrostatic membrane; it uses a calcium-zinc composite stabilizer and phosphite to form a composite stabilizer, and uses polypropylene adipate and erucamide to form an anti-migration agent, effectively improving the temperature resistance and stability of the PVC electrostatic membrane.
Owner:GUANGDONG YUTAI IND GRP CO LTD
Spotlight with replaceable anti-dazzle surface cover
ActiveCN224135829Ureduce stimulationEliminate visual fragmentationGas-tight/water-tight arrangementsLight fasteningsMechanical engineeringVisual perception
The utility model belongs to the technical field of spotlights, and discloses a replaceable anti-dazzle surface cover spotlight which comprises a tail cover, a lamp body and a surface cover assembly detachably installed at the light emitting end of the lamp body. The surface cover assembly comprises an anti-dazzle surface cover and a conventional surface cover which are interchangeable, the anti-dazzle surface cover and the conventional surface cover are fixed to the lamp body through threaded connection structures, and the anti-dazzle surface cover comprises top surface sealing glass; the diameter of the anti-dazzle surface cover is equal to that of the lamp main body; a light source and step glass are arranged in the lamp body, and the step glass is fixed to the end, close to the face cover assembly, of the lamp body through a glass pressing ring. According to the utility model, the sealing glass is arranged at the top of the anti-dazzle surface cover, so that the direct light of the light source is effectively shielded, the visual split feeling caused by the size difference of the traditional anti-dazzle surface cover is eliminated, and the overall appearance coordination is improved. The sealing structure of the sealing glass prevents external water vapor and dust from entering the lamp body; and the step surface of the step glass is directly pressed by the glass pressing ring, so that the step glass is fixed and sealed.
Owner:PUYUAN ELECTRONIC ILLUMINATION CO LTD
A compact short-wave infrared optical lens
ActiveCN119087634BShorten the total length of the systemShorten the overall lengthOptical elementsGrismShort wave infrared
The application provides a compact short-wave infrared optical lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a prism, a fifth lens and a sixth lens arranged in sequence along the direction from the object side to the image side; the prism comprises a half-pentaprism and an isosceles prism; the object side and the image side of the first lens are both provided with a convex structure; the object side of the second lens is provided with a concave structure, and the image side is provided with a concave structure; the object side of the third lens is provided with a convex structure, and the image side is provided with a concave structure; the object side of the fourth lens is provided with a concave structure, and the image side is provided with a plane structure; the object side of the fifth lens is provided with a concave structure, and the image side is provided with a plane structure; the object side of the sixth lens is provided with a plane structure, and the image side is provided with a convex structure; the light from the object side is reflected five times in the prism, of which three times are total reflection and twice are internal reflection, so as to fold the optical path. The compact short-wave infrared optical lens is compact and small in size.
Owner:TIANJIN JINHANG INST OF TECH PHYSICS