56results about How to "With miniaturization" patented technology

The invention provides an optical lens, which sequentially comprises a first lens with negative focal power from an object side to an imaging surface along an optical axis, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power from the object side to the imaging surface, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a concave surface; the object side surface of the seventh lens is a convex surface, and the image side surface of the seventh lens is a convex surface; and the object side surface of the eighth lens is a convex surface, and the image side surface of the eighth lens is a concave surface. According to the optical lens, through specific surface shape matching and reasonable focal power distribution, the imaging quality of the optical lens can be improved, and the optical lens has the advantage of being good in imaging quality.

The invention relates to the field of optical lenses, and discloses a camera shooting optical lens which is composed of a first lens, a second lens, a third lens, a fourth lens and a prism which are sequentially arranged from the object side to the image side. The focal length and the total optical length of the shooting optical lens are f and TTL respectively, the focal length of the first lens is f1, the combined focal length of the front two lenses is f12, the combined focal length of the rear three lenses is f234, the central curvature radiuses of the object side surface and the image side surface of the first lens are R1 and R2 respectively, the axial thicknesses of the first lens and the third lens are d1 and d5 respectively, and the central curvature radiuses of the object side surface and the image side surface of the third lens are R1 and R2 respectively. The axial distance from the object side surface of the first lens to the image side surface of the fourth lens is Td, and the following relational expression is satisfied: f1 / f is greater than or equal to 0.30 and less than or equal to 0.70; -1.40 < = f12 / f234 < =-0.04; -3.00 < = R1 / R2 < =-1.00; 0.16 < = Td / TTL < = 0.21; and 0.05 < = d5 / ET3 < = 0.66.

The invention discloses a multi-beam reconfigurable antenna with multi-polarization and beam switching functions, and relates to the technical field of wireless communication antennas. Comprising a reconfigurable feed network and a plurality of electromagnetic dipole antenna units. Each antenna unit is composed of four square patches with arc-shaped grooves and two rectangular patches, the four square patches with the arc-shaped grooves are connected with the metal floor through four short circuit columns, the rectangular patches are connected with the feed network through copper columns, the two rectangular patches are printed on the front face and the back face of the dielectric plate respectively, the height difference of the two rectangular patches is 1 mm, and the two rectangular patches are orthogonal in position. Independent tuning of various polarization and wave beam states can be realized, and the antenna has the advantages of high integration level, large bandwidth, multiple polarization, convenient operation, low cost and the like, and is suitable for systems of multi-target detection, traffic communication and the like.

The invention particularly relates to a connector used for a sphygmomanometer, the connector comprises a first connecting assembly, the first connecting assembly comprises a first conductive part and a first sleeve, the first conductive part is sleeved with the first sleeve, and a hollow first air channel is formed in the pipe wall of the first sleeve; the second connecting assembly comprises a second conductive piece and a second sleeve arranged outside the second conductive piece in a sleeving mode, a hollow second air channel is formed in the pipe wall of the second sleeve, and under the condition that the first connecting assembly and the second connecting assembly are in butt joint, the first conductive piece and the second conductive piece are connected to form an electric connecting circuit of the connector. The first air channel and the second air channel are communicated to form an airflow connecting channel of the connector. According to the connector, the airflow connecting channel and the electric connecting circuit are integrated, the electric connecting circuit is arranged in the airflow connecting channel, the electric connecting circuit can be protected, and the connector has the technical effects of miniaturization, compact structure, attractive appearance, few parts and low cost.

The invention provides an optical lens, which consists of seven lenses, and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an imaging surface, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a concave surface; the fifth lens has positive focal power, and the object side surface of the fifth lens is a convex surface; the image side surface is a convex surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a convex surface; and the object side surface of the seventh lens is a convex surface, and the image side surface of the seventh lens is a concave surface. According to the optical lens provided by the invention, through specific surface shape matching and reasonable focal power distribution, the imaging quality of the optical lens can be improved, the aberration can be reduced, and the imaging quality of the optical lens can be improved.

The application relates to a micro actuator for inner ear injection sampling surgery, and relates to the field of medical instruments.The application solves the problems that the existing actuator cannot more accurately assist the doctor in judging the surgery progress, lacks clinical surgery practicability in design, and makes the otological surgery still have certain operation difficulty.The microneedle puncture mechanism module is embedded in the driving and sensing module, the driving and sensing module is installed on the high-precision linear driving module, the end operation mechanism module is installed at the front of the driving and sensing module, the microneedle puncture mechanism module passes through the end operation mechanism module and extends out, and the endoscope camera module in the end operation mechanism module provides real-time images in the surgery process, the tension sensor in the driving and sensing module monitors the change of the steel wire tension in real time, and safety interaction with the ear canal environment is ensured.The application is used for inner ear injection sampling surgery.

This invention discloses a sensor for detecting ice, water, and dryness states, comprising a substrate, a first metal line, a second metal line, a third metal line disposed on the surface of the substrate, a variable capacitor, an interdigitated capacitor, and a planar inductor. One end of the variable capacitor is connected to one end of the planar inductor via the first metal line, and the other end of the planar inductor is connected to one end of the interdigitated capacitor via the second metal line. The other end of the interdigitated capacitor is connected to the other end of the variable capacitor via the third metal line. The capacitance value of the interdigitated capacitor changes with the different dielectric constants of the materials between the interdigitated fingers. Since the relative dielectric constants of ice, water, and dryness change at different frequencies, the capacitance value of the interdigitated capacitor also changes. Therefore, this sensor for detecting ice, water, and dryness states has advantages such as simple structure, high recognition rate, small size, and process compatibility.

The present invention discloses a directional pattern reconfigurable phase bit antenna and a two-dimensional beam scanning array thereof, belonging to the field of communication technology. The directional pattern reconfigurable phase bit antenna comprises a miniaturized electromagnetic metasurface, a metal patch unit, a dielectric resonator, a phase 1 bit coupling feeding slot, a reflector radiation slot, a phase bit switching circuit, a reconfigurable reflector slot switching circuit, a feeding microstrip line, a switching DC bias circuit, a metal floor, a metal reflector plate and a nylon screw. The array elements in the two-dimensional scanning digital multi-beam array based on a one-dimensional linear array are composed of directional pattern reconfigurable phase bit antennas. The present invention solves the limitation that the existing one-dimensional linear array is difficult to realize two-dimensional multi-beam scanning of the linear array, the limitation that the traditional digital bit array uses a patch radiator resulting in a large size and difficulty in forming an array for wide-angle scanning, the disadvantage of the narrow bandwidth of the traditional digital bit array, and the design limitation that the traditional two-dimensional beam scanning array requires large-scale array elements and occupies a large space.

The utility model provides an end window type water algae excitation fluorescence spectrum in-situ sensor optical-mechanical structure. The optical-mechanical structure comprises a receiving end sapphire optical window, an excitation end sapphire optical window, a radial sealing ring, a titanium alloy base, an axial sealing ring, a gland plate, a photomultiplier, an optical filter and an LED lamp bead. The portable underwater robot has the characteristics of miniaturization, portability and high pressure resistance, can be carried on mobile platforms such as an Argo and an underwater glider, and has the working depth of 5000 meters underwater.

The utility model relates to the technical field of mechanical refrigeration, and provides a pre-cooling type JT throttling refrigerating machine which comprises a pre-cooler provided with a cold head. A linear driving mechanism; the compression unit is connected with the linear driving mechanism and outputs a high-pressure gas working medium under the action of the linear driving mechanism; the vacuum cover is used for providing a vacuum heat insulation effect; the compression unit and the cold head are coupled and are positioned in the vacuum cover; the heat exchanger is used for pre-cooling the high-pressure incoming flow gas by utilizing the backflow cold gas; the throttling valve penetrates through the heat exchanger and communicates with the high-pressure end of the compression unit; one end of the evaporator is connected with the throttle valve, and the other end penetrates through the heat exchanger and is connected with the low-pressure end of the compression unit. According to the utility model, the compression unit for driving the throttling working medium is placed in the vacuum cover at a low temperature, so that the output performance of the compression unit is improved, and the system efficiency of the refrigerator is improved; in addition, the compression unit is directly coupled with the cold head, the system structure is simplified, and the efficiency of the refrigerating system is improved.

This invention provides an optical lens comprising eight lenses of optical power, arranged sequentially along the optical axis from the object side to the image plane: a first lens with negative optical power, its object side being concave and its image side being convex; a second lens with positive optical power, its object side being convex and its image side being convex; a third lens with negative optical power, its object side being concave; a fourth lens with positive optical power; a fifth lens with positive optical power, its object side being convex; a sixth lens with negative optical power, its image side being concave; a seventh lens with negative optical power, its object side being convex and its image side being concave; and an eighth lens with positive optical power. The optical lens provided by this invention, through a specific combination of surface shapes and a reasonable distribution of optical power, achieves one or more advantages such as miniaturization, telephoto capability, large image plane, large aperture, and high image quality.

The present application relates to a kind of mixed components, sludge coal-water slurry preparation system and its preparation method, which can be low-cost and efficient consumption processing of residual sludge after sewage treatment.Sludge coal-water slurry preparation system includes slurry mixing machine for mixing the coal powder and sludge slurry, slurry mixing machine is divided into coal processing device and sludge processing device 2 paths before setting respectively;Coal processing device includes crusher for crushing raw coal, vibrating screen in order according to its processing process, return device is arranged between crusher, vibrating screen for raw coal that has not passed through screen mesh hole is transported back to crusher;Sludge processing device includes slurry pulverizer for crushing sludge into sludge slurry;Produced coal-water slurry is more suitable for fluidized bed boiler combustion;Slurry preparation system before furnace can also save transportation and storage cost and its influence on surrounding environment.

This application discloses an optical lens. The optical lens, along the optical axis from the object side to the image side, sequentially includes: a first lens with negative optical power, whose image side is concave; a second lens with optical power, whose object side is concave and image side is convex; a third lens with optical power, whose object side is convex; a fourth lens with positive optical power, whose image side is convex; a fifth lens with positive optical power, whose object side and image side are both convex; a sixth lens with negative optical power, whose object side is concave; a seventh lens with positive optical power, whose object side and image side are both convex; and an eighth lens with optical power, whose object side is convex and image side is concave. The sum of the distances between any two adjacent lenses on the optical axis, ∑AT, and the distance on the optical axis from the object side of the first lens to the image plane of the optical lens, TTL, satisfy: 0.1 ≤ ∑AT / TTL ≤ 0.2.

The invention provides an optical lens, which is composed of six lenses and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an image side along an optical axis, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a convex surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface; the fourth lens has positive focal power, and the object side surface of the fourth lens is a convex surface; the fifth lens has negative focal power, and the image side surface of the fifth lens is a concave surface; the object side surface of the sixth lens is a convex surface, and the image side surface of the sixth lens is a concave surface; wherein the real image height IH corresponding to the maximum field angle of the optical lens and the entrance pupil diameter EPD of the optical lens meet the following conditions: 11lt; iH / EPDlt; 14. According to the optical lens provided by the invention, through specific surface shape matching and reasonable focal power distribution, the imaging quality of the optical lens can be improved, the aberration can be reduced, and the imaging quality of the optical lens can be improved.

The invention provides an automatic testing device, system and method for a QFN packaging type microwave integrated chip, and the device comprises a testing assembly which comprises a switching matrix switch and a plurality of testing interfaces connected with the switching matrix switch, and the switching matrix switch is used for switching the connection between the plurality of testing interfaces and a to-be-tested chip; the control assembly is connected with the test assembly and is used for controlling the switching matrix switch to switch connection between the plurality of connection test interfaces and a chip to be tested so as to enable the chip to be tested to output a test microwave signal when the chip to be tested is connected with the test interfaces; the mounting seat is used for mounting the test assembly and the control assembly, the test device can control the matrix change-over switch to be connected with the target test interface and the target pin based on the test item information and the pin information of the to-be-tested chip, and therefore the test efficiency is improved.

The application discloses a Jerusalem unit double-layer FSS broadband wave-absorbing structure and a preparation method and application thereof, and belongs to the field of electromagnetic wave-absorbing technology design in electromagnetic stealth technology. The structure is sequentially arranged from bottom to top as a metal bottom layer, a dielectric layer 1, a patterned resistance layer 1, a dielectric layer 2 and a patterned resistance layer 2. Periodic array distributed multiple unit cell structures are formed on the surfaces of the patterned resistance layer 1 and the patterned resistance layer 2, and each unit cell structure adopts a Jerusalem cross pattern. The Jerusalem unit double-layer FSS broadband wave-absorbing structure provided by the application has a wide-frequency absorption characteristic. Through the regulation of geometric sizes on a macro scale and the structure design on a micro scale, the wave-absorbing structure can realize an absorption rate of more than 99% in a full frequency band of 8-12 GHz, and has a good absorption effect on low-frequency electromagnetic waves.

The invention provides an optical lens, which comprises six lenses from an object side to an imaging surface along an optical axis: a first lens with negative focal power; the object side surface and the image side surface of the second lens are convex surfaces; the object side surface and the image side surface of the third lens are convex surfaces; the fourth lens has positive focal power, and the object side surface of the fourth lens is a convex surface; the fifth lens has negative focal power, and the image side surface of the fifth lens is a concave surface; and the sixth lens has negative focal power. According to the optical lens provided by the invention, by optimizing the shape, focal power, thickness, spacing and the like of each lens, the imaging quality of the optical lens is improved, the aberration is reduced, the imaging quality of the optical lens is improved, and the optical lens has one or more advantages of small aperture, large image plane, miniaturization, long focal length and the like.

The application discloses a kind of based on double optical comb linear optical sampling optical fiber time delay measurement method and device, for solving the problem of high-precision optical fiber time delay precision measurement in information science and optical fiber communication, its characteristics are using two optical comb modules with small difference in repetition frequency, the optical comb signals generated by it are divided into a total of 4 optical comb signals after beam splitting;One optical comb signal generated by one optical comb module is divided into one after beam splitting, and the other optical comb module is divided into one after beam splitting to obtain an electrical signal by linear optical sampling;After linear optical sampling, the remaining 2 optical comb signals obtain another electrical signal;The time delay of the two electrical signals amplified by a fixed multiple is measured to calculate the time delay of the optical fiber to be measured.Compared with the prior art, the device has a simple structure, higher measurement accuracy and a large measurement range in theory, and has the prospect of integration and miniaturization, and is expected to have important applications in the fields of optical fiber sensing and precision measurement.

This invention relates to the field of optical lenses and discloses a camera optical lens comprising six lenses, arranged sequentially from the object side to the image side as follows: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power, and a sixth lens with negative refractive power. The focal length of the camera optical lens is f, the focal length of the first lens is f1, the focal length of the second lens is f2, and the focal length of the fourth lens is f4. The radius of curvature of the object side of the first lens is R1, the radius of curvature of the image side of the first lens is R2, and the radius of curvature of the object side of the fourth lens is R7. The radius of curvature of the image side of the fourth lens is R8, the axial thickness of the first lens is d1, the axial thickness of the fifth lens is d9, the axial thickness of the sixth lens is d11, and the axial distance from the image side of the fifth lens to the object side of the sixth lens is d10; the total optical length is TTL, satisfying the following relationships: 0.350≤(d9+d10+d11) / TTL≤0.500; -12.00≤f4 / (R7-R8)≤-3.50; 12.00≤(f1-f2) / f≤35.00; -5.00≤f1d1 / (R1+R2)≤-0.45.

The invention belongs to the field of ultra-wideband antennas, and provides a miniaturized ultra-wideband antenna with trapped waves, which basically structurally comprises a dielectric substrate, a radiation unit and a microstrip feeder which are attached to one side of the dielectric substrate, and a grounding plate attached to the other side of the dielectric substrate. The radiation unit is formed by combining a circle and a polygon, and a U-shaped notch groove is formed in the radiation unit and used for suppressing electromagnetic waves of unneeded frequency bands. The grounding plate is provided with a second-order Minkowski fractal groove which is used for impedance optimization of the antenna. The ultra-wideband antenna provided by the invention is a monopole antenna, a Teflon ZYF300CA-C high-frequency plate is selected, the size of the antenna is 22mm * 28mm * 0.76 mm, the dielectric constant Dk of a substrate is 2.94, and the loss tangent Df is 0.0016; and the impedance of the microstrip feeder is 50 ohms. According to the invention, trapped waves can be generated near a 5.5 GHz frequency point, and S11lt can be satisfied in a frequency range of 3.47 to 4.92 GHz and a frequency range of 5.83 to 13.54 GHz; and-10 dB. The antenna has the characteristics of miniaturization, ultra wide band, omnidirectivity and low profile, and can be applied to an ultra wide band (UWB) communication technology.

The application provides an optical lens and an electronic device. The optical lens comprises, in sequence from a first side to a second side: a first lens with negative optical power, the first side of the first lens being a convex surface and the second side being a concave surface; a second lens with negative optical power, the first side of the second lens being a concave surface and the second side being a convex surface; a third lens with positive optical power, the first side of the third lens being a convex surface and the second side being a convex surface; a fourth lens with optical power; a fifth lens with optical power; and a sixth lens with positive optical power, the first side of the sixth lens being a convex surface. The optical lens satisfies 5.869 <= TTL / F <= 7.763 and 0.313 <= d1 / F <= 0.51. The application solves the problem that the optical lens in the prior art cannot simultaneously have a large field of view, miniaturization and high resolution.

An interference filter type external cavity semiconductor laser is characterized by being composed of a laser base, a laser light source assembly, a filter wavelength adjusting assembly, a cat eye reflection optical assembly and a cavity length temperature control tuning device. The laser provided by the utility model is high in structural force and thermal stability, integrates the functions of laser beam expanding collimation, laser diode LD temperature control and monitoring, external cavity output frequency tuning, laser mode selection, laser frequency stabilization and spatial light adjustment, is not sensitive to imbalance caused by mechanical and thermal disturbances, and is high in reliability. Compared with the prior art, the cat eye laser has the advantages that wavelength sensitivity, external cavity feedback, frequency noise and vibration sensitivity are reduced, and the cat eye laser is stable, simple in structure, low in cost and high in performance, has frequency stability and narrower line width, meets harsh vibration conditions such as transportation and rocket launching, and is suitable for working environments such as space and ground.

The utility model discloses a sampling head of a telescopic water quality sampling device, the sampling head is composed of a top cover, a protective cylinder and a base which are sequentially connected from top to bottom, a connector is fixed on the inner side of the top cover, a stay wire and a water drawing pipe are connected through the connector, the connector is communicated with the protective cylinder through a hose, and the protective cylinder is connected with the base through the hose. A pile casing is arranged on the base, a filter cartridge is sealed in the pile casing, a plurality of water inlets are formed in the base and distributed in the middle of the base in the circumferential direction, and a buoyancy bin and a ballast tank which can be opened are further arranged on the base. The utility model has the characteristics of miniaturization and convenience.

This invention relates to the field of optical lenses and discloses a camera optical lens comprising seven lenses, which are arranged sequentially from the object side to the image side as follows: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power, a fifth lens with refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power; wherein the Abbe number of the first lens is v1, the total optical length of the camera optical lens is TTL, the image height of the 1.0 field of view of the camera optical lens is IH, and the field of view angle of the 1.0 field of view of the camera optical lens is FOV, and satisfy the following relationships: 81.6≤v1≤95.2; 0.49≤TTL / (2IH)≤0.61; 82°≤FOV≤86°.

The present invention discloses an eccentric rare earth doped optical fiber and its application, an optical fiber laser, and an optical fiber amplifier. The glass part of the optical fiber includes a rare earth doped core with a decreasing refractive index from the inside to the outside, and an eccentric inner cladding; the outer contour of the cross section of the core is a rectangle or a regular polygon; the outer contour of the cross section of the eccentric inner cladding is a circle, and its center coincides with the geometric center of the cross section of the eccentric rare earth doped optical fiber; there is a distance D between the geometric center of the cross section outer contour of the core and the center of the outer contour of the eccentric inner cladding, and D>0. The eccentric rare earth doped optical fiber provided by the present invention adopts a rectangular or regular polygonal core, which, on the one hand, improves the absorption efficiency of the core, and on the other hand, reduces the energy loss of the cladding evanescent wave overflow, thereby comprehensively improving the pumping efficiency. The present invention is used as an optical gain medium for lasers and optical fiber amplifiers, and has the advantages of device miniaturization, high absorption efficiency, and low fusion loss.

The invention discloses a micro actuator for an inner ear injection sampling operation, and relates to the field of medical instruments. The problems that an existing actuator cannot more accurately assist a doctor in judging the operation progress, clinical operation practicability is lacked in design, and certain operation difficulty still exists in the otology operation are solved. A microneedle puncture mechanism module is embedded in a driving and sensing module, the driving and sensing module is installed on a high-precision linear driving module, a tail end operating mechanism module is installed on the front portion of the driving and sensing module, and the microneedle puncture mechanism module penetrates through the tail end operating mechanism module and extends out. An endoscope camera module located in the tail end operating mechanism module is used for providing real-time images in the operation process, a tension sensor in the driving and sensing module monitors the change of the tension of a steel wire in real time, and safe interaction with the auditory meatus environment is ensured. The device is used for the inner ear injection sampling operation.

The present application relates to an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens with optical power; a second lens with optical power; a third lens with positive optical power; a fourth lens with optical power; and a fifth lens with optical power, whose object side surface is convex and image side surface is concave. The maximum field of view FOV of the optical imaging lens satisfies: FOV>90°; the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH satisfy: TTL / ImgH<1.4; and the effective focal length f2 of the second lens and the effective focal length f4 of the fourth lens satisfy: 1.0<|f2 / f4|<2.5.

The invention discloses a closed-loop insulin controlled release system based on a microneedle array patch. The method for achieving closed-loop insulin controlled release comprises the steps that the glucose microneedle sensor in the system is used for monitoring the blood glucose concentration, and when the blood glucose concentration is too high, the subcutaneous release state of insulin is regulated and controlled by applying voltage to the insulin controlled release microneedle; wherein each insulin controlled-release microneedle is provided with an independent current path, so that each microneedle is independently addressed, and the release of a single piece or a plurality of pieces of insulin can be regulated and controlled; the insulin gel part of the insulin controlled release microneedle comprises insulin, sodium alginate and metal ions. The invention relates to a closed-loop insulin controlled release system based on a microneedle array patch, and discloses an insulin closed-loop system suitable for diabetics, which can continuously monitor blood sugar and realize active control of insulin release through electric triggering when the blood sugar concentration is relatively high, and has the advantages of convenience, minimally invasive property and controllability.

The application provides an optical lens, which has eight lenses with optical power, and sequentially comprises, along an optical axis from an object side to an imaging surface, a first lens with negative optical power, whose object side surface is a concave surface and whose image side surface is a convex surface; a second lens with positive optical power, whose image side surface is a convex surface; a third lens with negative optical power, whose object side surface is a concave surface; a fourth lens with positive optical power, whose object side surface is a convex surface; a fifth lens with positive optical power, whose object side surface is a convex surface; a sixth lens with negative optical power, whose image side surface is a concave surface; a seventh lens with negative optical power, whose object side surface is a convex surface and whose image side surface is a concave surface; and an eighth lens with positive optical power, whose object side surface is a concave surface and whose image side surface is a convex surface. The optical lens provided by the application has one or more advantages, such as miniaturization, long focus, large image surface, large aperture, high imaging quality and the like, through specific surface shape matching and reasonable optical power distribution.

The embodiment of the application provides a kind of multi-polar chamber sub antenna, it is related to antenna technical field, comprising: ground piece;Dielectric piece;Radiating patch, radiating patch and ground piece are respectively arranged on the two sides of dielectric piece;Multiple first coupling patch, each first coupling patch is coupled with radiating patch and is connected;Multiple feeders, feeder is arranged on ground piece, each feeder is connected with each first coupling patch for feeding first coupling patch;Second coupling patch, second coupling patch is coupled with radiating patch and is connected;Metal column, metal column is connected with ground piece and second coupling patch.The multi-polar chamber sub antenna provided by the embodiment of the application solves the problem that single chamber sub antenna in the related art cannot simultaneously have wide frequency band, multi-polarization and small size performance.