40results about How to "Reduced shielding" patented technology

The invention relates to the field of electric field quantum measurement, in particular to a low-frequency electric field measurement method and a three-photon Rydberg system. The low-frequency electric field measurement method comprises the following steps: moving an atom gas chamber containing cesium atoms to a low-frequency electric field to be measured; cesium atoms are driven by probe light to transition from a ground state 6S1 / 2 to an excited state 6P1 / 2; driving cesium atoms to jump from an excited state 6P1 / 2 to an excited state 9S1 / 2 through decoration light; driving the cesium atoms to transition from an excited state 9S1 / 2 to a higher Rydberg state nP3 / 2 through coupled light to obtain Rydberg atoms; a photoelectric detector is adopted to detect the absorption condition of the detection light; based on the absorption condition, an oscilloscope is adopted to observe EIT spectrum change; based on the EIT spectrum change, obtaining a spectrum frequency shift amount; and the electric field intensity of the low-frequency electric field to be measured is calculated through the spectral frequency shift amount and the polarizability of the Rydberg atoms, so that the shielding problem of the atomic air chamber to the low-frequency electric field can be reduced, the spectral line width is narrower, and the electric field measurement resolution is greatly improved.

The invention relates to the technical field of protein and peptide, in particular to cubilose peptide with high antioxidant activity and a preparation method of tablets of the cubilose peptide. Comprising the following steps: preparing modified cubilose zymolyte; performing multiple enzymolysis on the modified cubilose zymolyte; the antioxidant stability of the cubilose peptide is enhanced. The resveratrol is grafted on the surface of cubilose protein through free radical reaction of the resveratrol, so that not only can the antioxidant capacity of the cubilose be enhanced, but also the water solubility of the cubilose can be improved, the subsequent enzyme can be better contacted with the cubilose, the enzymolysis efficiency is improved, and the enzymolysis effect is improved. According to the preparation method, cubilose peptide is added into cubilose, reduction of antioxidant activity of the cubilose peptide due to external oxidation factors and too long enzymolysis time is avoided, then the cubilose is subjected to glycosylation modification through chitosan, the dispersion and emulsification stability of the modified cubilose zymolyte can be improved, and the contact area of subsequent enzymes and the modified cubilose zymolyte is increased; the oxidation resistance and the subsequent enzymolysis efficiency are further enhanced.

The invention discloses a cavity antenna of a notebook computer shell. The cavity antenna comprises a metal shell cover with a rectangular opening area. The cuboid cavity is installed on the machine shell cover and embedded in the rectangular opening area. The cavity is provided with four metal side faces, a metal bottom face and an opening face, the opening face is opposite to the metal bottom face, and the opening face and the rectangular opening area are located on the same plane. The double-sided printed circuit board is provided with a feed-in surface and a coupling surface, the feed-in surface coincides with the opening surface and is superposed on the cavity, and the periphery of the feed-in surface is welded on the side surface of the cavity. The coaxial line penetrates through one metal side face, the center conductor is connected with an excitation circuit of the feed-in face, and the outer layer conductor is connected with a grounding circuit of the feed-in face and conducts the four metal side faces. The excitation circuit is coupled with the slot line block, the first high-frequency block and the second high-frequency block of the coupling surface, the slot line block is connected with one of the four metal side surfaces, and the first high-frequency block and the second high-frequency block are in floating connection. The shielding effect can be reduced.

The invention relates to the technical field of PVB heat-insulating films, in particular to a PVB heat-insulating film based on indium tin oxide and bronze cesium tungsten compounding and a preparation method thereof.The PVB heat-insulating film is prepared from, by weight, 80-120 parts of PVB resin, 20-50 parts of oily plasticizer, 0.1-2.0 parts of silane coupling agent, 0.1-1.0 part of antioxidant, 0.1-1.0 part of ultraviolet light absorber, 1-5 parts of polyethylene glycol derivative and 1-5 parts of compound dispersion slurry, the weight ratio of the indium tin oxide powder to the bronze cesium tungsten powder in the compound dispersed slurry is (5: 5)-(7: 3). According to the PVB heat-insulating film based on indium tin oxide and cesium tungsten bronze compounding and the preparation method, the prepared PVB heat-insulating film has high visible light transmittance and excellent near-infrared light rejection rate, meanwhile, the Faraday cage effect can be effectively avoided, and the signal shielding problem is avoided.

According to the watch head type automobile key and the automobile assembly, a watchband connecting piece is connected to the outer side wall of a middle frame, so that the watchband connecting piece can avoid the area, covered by a display panel, of an inner cavity of a shell, and at least part of a communication element is installed on the watchband connecting piece; therefore, the communication element can at least partially avoid the covering area of the display panel, so that communication signals of the communication element can bypass the display panel, interference or shielding of the display panel on the communication signals of the communication element is reduced, and signals transmitted and / or received by the communication element can interact with an external vehicle or accessory. Therefore, the signal of the gauge head type automobile key can be identified by the automobile, so that the control effect of the automobile is improved.

The invention belongs to the technical field of laser welding, and discloses a medium-thickness plate welding process without beveling, three groups of laser arrays are adopted for welding, the first laser array completely covers a butt joint gap to generate a stable molten pool with shallow depth and large melting area, and the second laser array melts and gasifies materials to form a deep melting key hole. The third laser array acts on the rear wall of the deep melting key hole to maintain the opening state of the key hole, and the third laser array, the first laser array and the second laser array jointly act to form a Y-shaped large key hole; due to the fact that the three sets of laser arrays are adopted for parallel machining, the total welding input energy can be accurately controlled, large-penetration-depth single-time welding of pure laser is achieved, and meanwhile the problems of welding deformation and incomplete penetration during multi-pass welding are solved; the to-be-welded workpiece does not need to be beveled in advance, the workpiece does not need to be cleaned before welding, and the welding efficiency can be effectively improved.

The utility model relates to an anti-condensation heating control device and a refrigerator. The anti-condensation heating control device comprises a control module and a condensation detection module. The control module comprises a comparator and a relay, the first output end of the comparator is electrically connected with the relay, and the relay is electrically connected with the heating device; the moisture condensation detection module comprises a first moisture condensation detection unit and a second moisture condensation detection unit, the first moisture condensation detection unit is electrically connected with the first input end of the comparator, and the second moisture condensation detection unit is electrically connected with the second input end of the comparator; the first condensation detection unit is used for detecting the surface humidity of cabinet door glass and outputting a first voltage to the comparator; the second condensation detection unit is used for detecting environment humidity and outputting a second voltage to the comparator; the comparator is used for controlling on or off of the relay. Through the arrangement, compared with a single chip microcomputer, the comparator has the advantages of being low in price and high in anti-interference performance, the requirements for the performance of a power supply, electromagnetic shielding and heat dissipation of the whole machine are lowered, and the cost of the whole machine is lowered.

The utility model relates to the technical field of shielding materials, and discloses a shielding structure, a cable and an electronic product. The shielding structure comprises a polyimide film layer and a conductive cloth layer, the polyimide film layer and the conductive cloth layer are bonded through an acrylic adhesive layer, a conductive adhesive layer is attached to the side, away from the acrylic adhesive layer, of the conductive cloth layer, and the overall thickness T after the polyimide film layer, the acrylic adhesive layer, the conductive cloth layer and the conductive adhesive layer are attached is smaller than or equal to 0.04 mm. The cable comprises a conductive wire and a shielding structure, and the shielding structure is pasted and coated on the outer side of the conductive wire. The electronic product comprises a first main body and a second main body which are rotationally connected, and the first main body and the second main body are electrically connected through a cable. According to the utility model, the shielding performance, wear resistance and bending durability of the shielding structure are improved, the thickness does not exceed 0.04 mm, the shielding structure can bear 500,000 times of rotating friction without being damaged and layered, and the shielding structure still has high shielding performance and conductivity.

The application relates to the solid state disk packaging technical field, in particular to a solid state disk packaging structure combined with an electromagnetic shielding function, which comprises a packaging shell, an internal shielding component and an interface shielding device. The inner wall of the packaging shell is provided with a conductive coating, the internal shielding component forms a shielding network with a shielding partition plate and a conductive elastic piece, and the interface shielding device adopts a shielding cover, a conductive adhesive tape and a signal filter to realize double shielding protection. Through the design of the conductive cloth layer, the conductive elastic piece and the conductive adhesive tape, external electromagnetic interference is effectively blocked, internal component layout changes are adapted, meanwhile, the signal transmission stability and the heat dissipation performance are enhanced, and the equipment operation reliability is improved.

This invention provides a follow-up clamping device for providing vortex gas to a laser welding head to protect the workpiece being welded. The follow-up clamping device includes: a clamping body having a conical inner cavity; a connecting member, one end of which is connected to the laser welding head; and an annular gas supply member, through which gas is introduced from the large opening side of the conical inner cavity, converges and forms a vortex-like converging airflow within the conical inner cavity, and is then ejected from the small opening side of the conical inner cavity, suitable for spraying towards the workpiece being welded. This invention solves the problems of unstable gas protection and the existence of protection dead zones in existing technologies, as well as the problem of severe plasma shielding effects affecting welding depth and energy transmission in existing technologies. It also solves the problem of existing laser welding clamping mechanisms obstructing airflow and causing protection blind zones.

The invention, which relates to the photoelectric display field, discloses a double-current-gate regulation light-emitting device comprising a first surface gate, a first electron transport layer, a first surface electrode layer, a second electron transport layer, a light-emitting composite layer, a second hole transport layer, a second surface electrode layer, a first hole transport layer, and a second surface gate. A first bias power supply is applied to the first surface grid and the first surface electrode layer, and a second bias power supply is applied to the second surface grid and the second surface electrode layer; a driving signal is applied between the first surface electrode layer and the second surface electrode layer and is used for driving hole-electrons to be compounded on the light-emitting composite layer and emitting light; the first configuration power supply and the second configuration power supply can regulate and control the electron hole migration amount in the light-emitting composite layer. According to the invention, the current gate structures are additionally arranged on two sides of a traditional light-emitting device, so that the problem of imbalance of electron carrier mobility and hole carrier mobility in the light-emitting composite layer can be effectively solved, the electron-hole light-emitting composite energy efficiency is effectively improved, and meanwhile, the light-emitting brightness and the light-emitting efficiency can be optimized at the same effect.

The present disclosure relates to the technical field of air conditioners, and in particular to an air conditioner outdoor unit and an air conditioner having same. The present disclosure provides an air conditioner outdoor unit. The air conditioner outdoor unit comprises: a case, an air outlet being formed at the top of the case, and a compressor assembly being provided at the bottom of the case; a fan provided at the top of the case and located at the position of the air outlet; and an electric control box provided in the case, wherein the distance between the bottom of the electric control box and the bottom of the case is Z2, and Z2≥0.8×H, wherein H is the height of the compressor assembly. According to the air conditioner outdoor unit of the present disclosure, on the premise of ensuring normal operation and convenient maintenance of the air conditioner outdoor unit, by reasonably configuring the distance between the electric control box and the bottom of the case, the height direction of the electric control box can be flexibly adjusted, thereby reducing effects of the electric control box on ventilation and noise in the air conditioner outdoor unit.

The invention discloses a segmented polycrystalline silicon deep groove silicon carbide MOSFET, and belongs to the technical field of semiconductor power devices. According to the device, a P + polycrystalline silicon section connected with a source electrode, a lightly doped Npolycrystalline silicon section and an N + polycrystalline silicon section connected with a grid electrode are sequentially arranged in a deep groove in the depth direction, and the P + polycrystalline silicon section, the lightly doped Npolycrystalline silicon section and the N + polycrystalline silicon section jointly form a polycrystalline silicon diode structure similar to a PIN. The P + polycrystalline silicon section at the bottom of the groove is used for shielding an electric field, the gate-drain coupling capacitance (Cgd) is effectively reduced, and the switching characteristic of the device is improved; meanwhile, by utilizing the characteristic that the reverse leakage current of the PIN structure is obviously increased under the short-circuit temperature rise, the self-adaptive reduction of the gate-source voltage (Vgs) is realized through gate loop resistance voltage division, so that the short-circuit current is inhibited. While voltage resistance and conduction performance of the device are ensured, short-circuit endurance capability and safe turn-off reliability of the device are remarkably improved.

Provided is a solar panel. The solar panel includes a rigid frame and a cell. The rigid frame has an accommodation opening. The cell is disposed at the accommodation opening.

The invention discloses a PMMA (polymethyl methacrylate) material atomic vapor pool for low-frequency electric field measurement and a manufacturing method thereof, the atomic vapor pool comprises a pool body made of PMMA material and a convex opening hermetically arranged on the pool body, the convex opening is communicated with an inner cavity of the pool body, and the convex opening is used for vacuumizing the interior of the pool body and filling alkali metal cesium atoms into the pool body. The structure is reliable, the cell body structure is made of a specific PMMA material, the conductivity of the PMMA material is small after cesium atoms are adsorbed, the low-frequency electric field shielding effect caused by adsorption of the cesium atoms is reduced under the condition that the optical property of the material and the influence of the electric field are not changed, the shielding effect is effectively reduced, and measurement of the space low-frequency electric field is achieved.

The utility model discloses a booster-level flame-retardant low-intermodulation feeder line, and relates to the technical field of cables. The booster-level flame-retardant low-intermodulation feeder line comprises an inner conductor, an insulating layer, an outer conductor and a sheath which are coaxially arranged from inside to outside, the outer conductor is a spiral corrugated metal tube, the insulating layer is made of low-density polytetrafluoroethylene with a fibrous microporous structure, and the sheath is made of booster-level flame-retardant fluorinated ethylene propylene; the booster-level flame-retardant low-intermodulation feeder line provided by the utility model has the characteristics of high temperature resistance, high flame retardance, high shielding, low loss, low passive intermodulation and super-flexible bending, is suitable for booster-level cables or cable assemblies of a UL system, and is particularly suitable for interlayers of ceilings and high-flame-retardant safe application occasions of super-flexible wiring connection.

The invention discloses an oil-in-water emulsion workover fluid and a preparation method thereof, and relates to the technical field of workover fluids, the oil-in-water emulsion workover fluid comprises the following raw materials by weight: 28-30 parts of water, 65-67 parts of white oil, 3-5 parts of a modified sorbitol-based emulsifier, and 2-4 parts of a modified sodium polyacrylate thickener. According to the modified sorbitol-based emulsifier prepared by the invention, the high temperature resistance is improved, the salt tolerance of the modified sodium polyacrylate thickener at high temperature is enhanced, and the oil-in-water emulsion workover fluid can be endowed with relatively strong high-temperature stability.

The utility model discloses a motor controller and electrical equipment, and the motor controller comprises a box body, a structural member and a low-voltage interface board, the structural member is arranged at the opening side of the box body, the side, facing the box body, of the structural member is provided with a bump, the low-voltage interface board is located between the box body and the structural member, and the side, facing the structural member, of the low-voltage interface board is provided with a copper layer. The salient points are at least partially located in the copper layer. According to the scheme provided by the invention, electromagnetic shielding of the low-voltage interface board is realized by directly utilizing the matching of the salient points on the structural member in the motor controller and the copper layer, an additional shielding cover is not needed, and the product weight and the product cost are reduced; moreover, the assembly of the shielding case is reduced, the assembly time is saved, and the production efficiency is improved. Meanwhile, after the shielding cover is removed, safety gaps between the shielding cover and the two sides can be reduced, the size of the product is reduced, and the power density of the product is improved.

This invention discloses a dual-laser-beam diamond synchronous polishing device and method, relating to the field of semiconductor material laser processing technology. The device includes: a laser generator for generating pulsed laser light; a homogenization and shaping unit for homogenizing and shaping the pulsed laser light to obtain a square-topped laser spot; a multi-path processing unit for dividing the homogenized and modulated pulsed laser light into two sub-pulse laser beams with different energy ratios and different incident angles on the diamond surface; and a three-dimensional motion platform for carrying the diamond and controlling the relative motion between the diamond and the two sub-pulse laser beams. The laser spots of the two sub-pulse laser beams overlap on the diamond surface along the scanning path. Based on a set scanning speed and scanning line spacing, the diamond is scanned and polished according to the scanning path. This method achieves simultaneous generation and removal of graphitization using a single-source dual-beam system, reducing the number of scans, lowering processing time, and improving processing quality.

The invention discloses a welding pressing device and application thereof. The welding pressing device comprises a pressing mechanism and a driving mechanism for driving the pressing mechanism to move up and down. The pressing mechanism comprises a pressing plate and a welding pressing head connected with the pressing plate, the welding pressing head comprises a pressing head body and an air blowing component connected to the lower portion of the pressing head body, the pressing head body is provided with an upper cavity, and the air blowing component is provided with a lower cavity communicated with the upper cavity; vent holes are circumferentially formed in the blowing component, the air inlet ends of the vent holes are circumferentially and uniformly distributed on the top end face of the lower cavity, the air outlet ends of the vent holes are annularly arranged on the inner wall of the lower cavity, and the air inlet ends and the air outlet ends are arranged at intervals in a staggered mode; the pressure head body is provided with an air inlet pipe for shielding air to flow, and one end of the air inlet pipe is communicated with the air inlet end. The gas blowing component blows out spirally divergent gas flow, the horizontal component of the welding direction and the horizontal component of the shielding gas outlet direction are controlled to be kept opposite, plasma generated in the welding process can be effectively blown away, and therefore the quality and stability of laser welding are improved.

The utility model relates to a tensile cable for a crane controller, which is formed by sequentially wrapping a first wrapping layer, a shielding layer, a second wrapping layer and an outer sheath outside a cable core formed by twisting a plurality of wire cores, a filling layer is arranged among the wire cores in the first wrapping layer; the outer diameter of the cable ranges from 19.0 mm to 27.0 mm, and the sectional area of the conductor ranges from 1.0 mm < 2 > to 1.5 mm < 2 >. Each wire core is formed by wrapping an insulating layer outside a conductor; the conductor is formed by twisting tinned copper monofilaments, and the twisting direction is leftward; the insulating layer is made of a low-smoke halogen-free flame-retardant ethylene propylene rubber insulating material; the first wrapping layer and the second wrapping layer are formed by overlapping and wrapping non-woven fabrics; the shielding layer is formed by weaving tinned copper wires; the outer sheath is made of a thermosetting low-smoke halogen-free flame-retardant sheath material; a tensile rope is clamped between the shielding layer and the second wrapping layer, and the axis of the tensile rope is parallel to the axis of the cable. The cable has good tensile capacity, and the problem that the outer sheath is broken due to repeated use is solved.

The application provides a trim glass, a column assembly and an automobile, relates to the technical field of glass products, and the trim glass comprises a diffusion layer and a glass body, the diffusion layer has a set roughness and is arranged on one side of the glass body, the thickness of the glass body is 2.1 mm to 3.5 mm, the total iron content of the glass body is 0.00005% to 0.12%, the contents of cobalt, chromium and selenium are substantially zero, and the difference between the millimeter wave loss rates when the trim glass is placed and when the trim glass is not placed is 3.15 db to 5.47 db. The application reduces the metal shielding effect, so that the millimeter wave loss rate when passing through the trim glass is reduced, meanwhile, by adding a certain amount of TiO2, the problem that the coloring effect of the trim glass is deteriorated due to the reduction of metal content and the ultraviolet transmittance is improved is solved. The trim glass can better adapt to the millimeter wave radar and improve the detection performance of the millimeter wave radar.

The utility model relates to an adjustable ventilation window for electromagnetic compatibility test belongs to the technical field of electromagnetic compatibility test, it adopts the net board body of circular, the body is by multiple group sector region constitutes, including big aperture vent area and small aperture vent area, through the shielded plate of central pivot linkage symmetry, can select the big hole or small hole area when rotating, realizes the dynamic regulation of shielding effectiveness and ventilation efficiency, the utility model discloses compact overall structure, easy operation makes the ventilation volume and shielding effectiveness adjustable.

The invention discloses a device for eliminating the shielding effect of a low-frequency electric field and a using method thereof, and belongs to the technical field of quantum measurement. The device for eliminating the shielding effect of the low-frequency electric field comprises a detection laser, a motor, a mounting shell, a coupling laser, a photoelectric detector and an oscilloscope; the mounting shell is used for mounting the atomic steam chamber; the detection laser emits laser into the atomic vapor chamber; the motor drives the mounting shell and the atomic steam chamber in the mounting shell to rotate; the coupling laser emits laser into the atomic vapor chamber; the photoelectric detector is used for receiving a light intensity signal output by the atomic vapor chamber and transmitting the signal to the oscilloscope, and the oscilloscope analyzes the light intensity signal and obtains an experimental result; by controlling the motor to rotate the atom steam chamber, the phenomenon of metal atom adsorption on the surface of the atom steam chamber is avoided, the shielding effect of the atom steam chamber on a low-frequency electric field is reduced, and the accuracy and reliability of a low-frequency electric field measurement result are remarkably improved.

A shielded electric wire includes: an electric wire; and a conductive non-woven fabric tape. The conductive non-woven fabric adhesive tape comprises a conductive non-woven fabric and a bonding layer. The adhesive layer adheres to the electric wire and adheres to the conductive non-woven fabric tape that overlaps when wound in a spiral shape. The following relation is satisfied: S / tL < = 0.5; and (S1-S2) / tL > = 0.25, where t is the width of the conductive nonwoven tape wound in the spiral shape, L is the length of the conductive nonwoven tape, S is the area of the adhesive layer in the conductive nonwoven tape, S1 is the area of an overlapping portion where the conductive nonwoven tape overlaps when the conductive nonwoven tape is wound in the spiral shape, and S2 is the area of the adhesive layer in the overlapping portion.

This utility model discloses an electrolyzer for a water electrolysis hydrogen production device, comprising a tank body and a sealing cover. A front-end plate is located on the left side of the tank body, and a rear-end plate is located on the right side. Multiple bipolar plates are fixedly arranged at intervals inside the tank body. Between adjacent components—between the front-end plate and the first bipolar plate, between each bipolar plate, and between the last bipolar plate and the rear-end plate—a porous anode electrode, a diaphragm, and a porous cathode electrode are sequentially sandwiched, forming multiple electrolysis chambers. Each electrolysis chamber has an electrolyte inlet at its rear and an anolyte outlet and a catholyte outlet at its front, corresponding to the anode and cathode flow fields, respectively. This utility model provides a short-range, directional flow channel for each reaction unit by setting independent electrolyte inlets and anolyte outlets at the front. This design ensures that the electrolyte can be rapidly and uniformly supplied to each electrode surface, improving current efficiency and saving energy.

The invention belongs to the technical field of component analysis of mixed materials, particularly relates to a method and a system for detecting and analyzing mixed materials based on an LIBS (laser-induced breakdown spectroscopy) technology, and provides a method for analyzing samples which are accurate, efficient and suitable for large water content change. According to the method, the spectrum of the mixed materials with the same concentration under different water contents is detected, a standardized model is established, the spectrum change of the mixed materials with the same concentration under different water contents is analyzed, the spectrum data is corrected according to the water content of a sample to be detected, and the influence of the water content on the detection result is effectively compensated. A target-enhanced DP-LIBS method is adopted, an aluminum target is arranged on the surface of a sample, a delay pulse generator controls a first laser pulse transmitter and a second laser pulse transmitter, a first laser beam and a second laser beam which are relatively delayed are transmitted, and the target plasma and the sample plasma are mutually acted, so that the target plasma and the sample plasma can be detected. The shielding effect of water molecules on plasma is reduced, and the signal intensity of sample elements is remarkably enhanced.

This application discloses a three-terminal vertical nano-air channel optoelectronic device, belonging to the field of micro / nanoelectronic and optoelectronic device technology. The device includes a substrate, a first electrode, a semiconductor photocathode, an insulating layer, a second electrode, and a third electrode. The first electrode is located on the upper surface of the substrate; the semiconductor photocathode is located on the upper surface of the first electrode; the insulating layer extends to cover the edge region of the upper surface of the semiconductor photocathode, forming an exposed active region in the center of the semiconductor photocathode; the second electrode is located on the upper surface of the semiconductor photocathode and forms direct electrical contact with the semiconductor photocathode, at least in the active region, and also includes a first independent bias port; the third electrode is suspended above the second electrode and forms a nano-air channel with the second electrode, and also includes a second independent bias port. This application utilizes a three-terminal independent bias architecture to achieve electrical decoupling between the high-speed drift transport of charge carriers within the semiconductor and the efficient electron extraction / emission process of the air channel, thereby obtaining higher emission efficiency, faster response speed, and superior optical stability.

This invention discloses an on-chip polarization-insensitive detector system. The system splits arbitrary polarized light into two branches for output (TE and TM modes), and these two branches are then output to both ends of the detector; the output power of the two branches is equal. The system includes an edge coupler, a waveguide interlayer coupler, an on-chip PRBS device, a 1-to-2 optical power splitter, and a detector. This invention's polarization-splitting, wave-splitting, and wave-combining method ensures that any input polarization state can be supplied with almost constant and identical optical power to both ends of the detector, mitigating the large-scale carrier shielding effect while maintaining polarization insensitivity. The incident polarization rotation beamsplitter and the wave-combining polarization beamsplitter use a mirror-image configuration to compensate for the time delays of the TE and TM modes, ensuring low polarization-dependent delays throughout the entire link when the polarization state changes.

The utility model provides a flexible circuit board, a display module and electronic equipment. The flexible circuit board comprises a substrate, a reference ground layer and a signal layer, wherein the substrate comprises a first surface and a second surface which are arranged back to back; the reference ground layer is arranged on the first surface of the substrate, and the reference ground layer comprises a plurality of reference ground wires; the signal layer is arranged on the second surface of the substrate, the signal layer comprises a plurality of signal lines, the signal lines are arranged at intervals, the orthographic projection of each signal line on the substrate is partially covered by the orthographic projection of the reference ground lines on the substrate, or the orthographic projection of each signal line on the substrate is partially covered by the orthographic projection of the reference ground lines on the substrate. The orthographic projection of each signal line on the substrate is completely covered by the orthographic projection of one reference ground line on the substrate. According to the technical scheme, the shielding performance of the flexible circuit board can be optimized on the basis of ensuring that the flexible circuit board has good working performance.