27results about How to "With miniaturization" patented technology

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 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 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 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.

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 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 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.

The utility model provides a kind of low cost ultrashort wave signaling machine, panel unit is configured to connect transceiver channel module, for voice signal acquisition and transceiver instruction issue;Transceiver channel module is configured to connect integrated service module, frequency synthesis module, panel unit and tuning module, for the reception and retransmission of voice signal;Integrated service module is configured to connect transceiver channel module, carries out voice encoding and decoding, filtering operation, timing control, channel control, voice and data transceiving and the issue of frequency conversion control instruction;Frequency synthesis module is configured to connect transceiver channel module, for generating radio frequency frequency;Tuning module is configured to connect transceiver channel module and radio frequency output module, for power amplification;Radio frequency output module is configured to connect tuning module, for transmitting output to signal.The utility model is in entire frequency band, 3dB bandwidth changes little, in 30MHz~88MHz range, noise coefficient is small, receiving dynamic range is high, tuning speed is fast.

This invention discloses a small, equal-band dual-frequency transceiver based on wireless communication technology. It includes a ceramic dielectric body, a tuning element, a multilayer circuit body, and an external electrode assembly. The tuning element is disposed on top of the ceramic dielectric body. The multilayer circuit body is disposed inside the ceramic dielectric body and electrically connected to the tuning element through a via structure. The multilayer circuit body includes a low-frequency channel filter and a high-frequency channel filter. The external electrode assembly is disposed at the bottom of the ceramic dielectric body. The low-frequency channel filter outputs signals within a set low-frequency band, and the high-frequency channel filter outputs signals within a set high-frequency band. This invention achieves a large capacitance value within a small volume by using vertical coupling. By setting the tuning element, the stopband bandwidth and suppression depth of the dual-frequency transceiver can be flexibly adjusted by changing the value of the tuning element, resulting in miniaturization, wide stopband, high suppression, and tunability.

The invention relates to the technical field of space laser communication, in particular to a photoelectric fusion integrated device and method based on an optical waveguide silicon-based optical phased array (OPA), and the device comprises an FPGA comprehensive processing module, a laser driver, a laser generator, an OPA antenna, an OPA drive circuit, a CCD / CMOS sensor, a CCD / CMOS control circuit, a signal amplifier and a DDR3 storage chip. All the units are integrated on the same PCB, the FPGA comprehensive processing module is connected with the OPA driving circuit, the DDR3 storage chip, the laser driver, the signal amplifier and the CCD / CMOS control circuit, the laser generator is connected with the laser driver, the OPA antenna is connected with the laser generator and the OPA driving circuit, and the CCD / CMOS sensor is connected with the signal amplifier and the CCD / CMOS control circuit. The system has the advantages of being high in integration level, small in size, light in weight and high in flexibility, and signal processing and image processing software can be customized or reconstructed according to actual requirements.

The utility model discloses a wide-area piezoelectric energy coupling and collecting device based on blade full-coverage type arrangement, which comprises an energy concentration system and a piezoelectric transduction system, and is characterized in that the energy concentration system comprises a front energy concentration pipe part, a necking part and a rear flow velocity raising pipe part which are connected in sequence; the piezoelectric transduction system comprises piezoelectric blades which are fixedly installed in the front energy concentration pipe part and covered with PVDF films, and the piezoelectric blades are connected with an external energy transmission system. The fluid energy collecting device only comprises two main parts, namely an energy concentrating system and a piezoelectric transduction system, has the characteristics of miniaturization, light weight and simple structure, is high in universality, can be widely applied to multi-scene fluid energy collection, and has the outstanding advantages of high energy collecting power density and high complex flow field adaptability; and deep utilization of multi-energy coupled fluid energy is facilitated.

This invention provides a snapshot-type Fourier transform Stokes polarization imaging spectrometer, comprising, in sequence along the beam propagation direction: a telescope system, a polarization modulation system, a converging system, a polarization interferometer system, and an imaging system. A target light field emitted from a target scene is incident on the telescope system. After passing through the telescope system, the target light field is collimated into a parallel light field and incident on the polarization modulation system. The parallel light field passes through the polarization modulation system sequentially to obtain a linearly polarized light field, which is then incident on the converging system. The converging system is used to perform multi-array imaging of the linearly polarized light field, resulting in multiple imaging light fields that are incident on the polarization interferometer system. The multiple imaging light fields generate superimposed interference at the light exit position of the polarization interferometer system, forming a polarization interferometric image field with specific optical path difference distribution characteristics. This image field is then incident on the imaging system to obtain an interferometric image array. Based on the aforementioned interferometric image array, the spectral information of each Stokes parameter of the target light field under each field of view is demodulated.

This invention discloses a tensile-resistant encapsulation device for an optical fiber coupler, comprising: an optical fiber coupling assembly, a coupler housing, an input optical fiber, an output optical fiber, an input optical fiber protection device, and an output optical fiber protection device; wherein, the optical fiber coupling assembly is disposed inside the coupler housing; one end of the input optical fiber is disposed within the input optical fiber protection device, and the other end of the input optical fiber is connected to the optical fiber coupling assembly; one end of the output optical fiber is disposed within the output optical fiber protection device, and the other end of the output optical fiber is connected to the optical fiber coupling assembly. This invention effectively enhances the environmental adaptability of the optical fiber coupler, possessing advantages such as moisture resistance, pollution resistance, corrosion resistance, mechanical damage resistance, high tensile strength, and good temperature resistance.