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30results about How to "Achieve distortion" patented technology

F16mm high-definition low-distortion semi-group mobile industrial lens

ActiveCN106526805AAvoid extreme useEnsure variabilityMountingsCamera lensLow distortion
The invention relates to an f16mm high-definition low-distortion semi-group mobile industrial lens. The lens comprises a main lens cone, a front group of lenses, an iris diaphragm and a rear group of lenses, wherein a front group lens cone and a rear group lens cone connected to a rear side of the front group lens cone are arranged in the main lens cone; a rear end of the main lens cone is provided with a connection seat; the front group of lenses is successively installed in the front group lens cone along a light incident direction; the iris diaphragm is installed in the rear group lens cone; and the rear group of lenses is installed in the rear group lens cone and the connection seat. The front group of lenses is formed by a first negative crescent lens, a first double convex lens, a second double convex lens and a first agglutination group connected to a first double concave lens in a sealing mode. The rear group of lenses is formed by a second double concave lens, a second agglutination group connected to a third double convex lens in the sealing mode, a fourth double convex lens, a positive crescent lens and a third agglutination group connected to a second negative crescent lens in the sealing mode. The main lens cone is provided with a diaphragm adjusting mechanism and a backseat lens cone is provided with a micro-focusing mechanism. The structure of the mobile industrial lens is simple and distortion of shooting to a close object is less than 1.1%.
Owner:FUJIAN FUGUANG TIANTONG OPTICS

Manual operation ice machine and refrigerator with same

The invention discloses a manual operation ice machine and a refrigerator with the same. The manual operation ice machine comprises an ice machine main body, an ice cube tray and an ice removing assembly, wherein a first positioning hole is formed on the front wall of the ice machine main body, and a second positioning hole is formed on the rear wall of the ice machine main body; a first limit bump is arranged on the inner surface of the rear wall of the ice machine main body; a first shaft is arranged at the front end of the ice cube tray, and a second shaft is arranged at the rear end of the ice cube tray; the first shaft is rotatably supported in the first positioning hole and is extended out of the first positioning hole; the second shaft is rotatably supported in the second positioning hole; the ice removing assembly comprises a key and a gear; the gear is arranged on the first shaft; the key is provided with a rack engaged with the gear and can move between a first position and a second position to drive the gear to rotate; and when the key is positioned at the second position, the opening surface of the ice cube tray is inclined, and the rear end of the ice cube tray is pressed against the first limit bump for ice removal. In the invention, the key is pressed to drive the gear to wiggle the ice cube tray, so that the ice cube tray can realize overturn ice removal only by applying lower force one time.
Owner:HEFEI MIDEA REFRIGERATOR CO LTD +1

Mesh electrode diamond X-ray measuring device

The invention provides a mesh electrode diamond X-ray measuring device. The end face of diamond in the measuring device is plated with a mesh electrode and a circular electrode. A connecting ring is fixedly connected to the front end of a shell through a thread in a sleeving mode. A gasket, the diamond, an insulation ring and an insulation layer are sequentially arranged on the central axis in the shell. The gasket, the diamond and the insulation ring are pressed in the shell through the connecting ring. The gasket is connected with the mesh electrode in a pressed mode. The insulation layer is fixedly connected with the shell. A core pin is wrapped in the insulation layer and penetrates through the insulation ring to be connected with the circular electrode. A joint externally connected with a cable is arranged at the tail end of the shell. Through the mesh electrode diamond X-ray measuring device, attenuation of X-rays is reduced, it is guaranteed that the low-energy X-rays can directly irradiate the diamond, and X-ray radiation measurement in the inertial confinement fusion field is realized. A concentric structure is more beneficial for realizing impedance matching of detectors, and measurement signal distortion is reduced. The large-area mesh electrode is more beneficial for sensitivity calibration and measurement application.
Owner:LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS

Manual operation ice machine and refrigerator with same

The invention discloses a manual operation ice machine and a refrigerator with the same. The manual operation ice machine comprises an ice machine main body, an ice cube tray and an ice removing assembly, wherein a first positioning hole is formed on the front wall of the ice machine main body, and a second positioning hole is formed on the rear wall of the ice machine main body; a first limit bump is arranged on the inner surface of the rear wall of the ice machine main body; a first shaft is arranged at the front end of the ice cube tray, and a second shaft is arranged at the rear end of the ice cube tray; the first shaft is rotatably supported in the first positioning hole and is extended out of the first positioning hole; the second shaft is rotatably supported in the second positioning hole; the ice removing assembly comprises a key and a gear; the gear is arranged on the first shaft; the key is provided with a rack engaged with the gear and can move between a first position and a second position to drive the gear to rotate; and when the key is positioned at the second position, the opening surface of the ice cube tray is inclined, and the rear end of the ice cube tray is pressed against the first limit bump for ice removal. In the invention, the key is pressed to drive the gear to wiggle the ice cube tray, so that the ice cube tray can realize overturn ice removal only by applying lower force one time.
Owner:HEFEI MIDEA REFRIGERATOR CO LTD +1

A mesh electrode diamond X-ray measuring device

The invention provides a mesh electrode diamond X-ray measuring device. The end face of diamond in the measuring device is plated with a mesh electrode and a circular electrode. A connecting ring is fixedly connected to the front end of a shell through a thread in a sleeving mode. A gasket, the diamond, an insulation ring and an insulation layer are sequentially arranged on the central axis in the shell. The gasket, the diamond and the insulation ring are pressed in the shell through the connecting ring. The gasket is connected with the mesh electrode in a pressed mode. The insulation layer is fixedly connected with the shell. A core pin is wrapped in the insulation layer and penetrates through the insulation ring to be connected with the circular electrode. A joint externally connected with a cable is arranged at the tail end of the shell. Through the mesh electrode diamond X-ray measuring device, attenuation of X-rays is reduced, it is guaranteed that the low-energy X-rays can directly irradiate the diamond, and X-ray radiation measurement in the inertial confinement fusion field is realized. A concentric structure is more beneficial for realizing impedance matching of detectors, and measurement signal distortion is reduced. The large-area mesh electrode is more beneficial for sensitivity calibration and measurement application.
Owner:LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS

A kind of heme ligand mimetic and its synthesis method

The invention discloses a heme ligand mimic and a synthesis method thereof. The compound name of the heme ligand mimic of the present invention is 5,10,15,20-tetra-(5-phosphophenyl)-5,10-15,20-double bundled porphyrin, and its structural formula is as formula (1) shown. The synthesis method mainly includes the following steps: dialdehyde bridging, i.e. the synthesis of the intermediate product bromo-bridged dialdehyde; ring formation, i.e. the synthesis of the intermediate product tetrabromo double-bound porphyrin; C-P bond formation, i.e. the intermediate product four Synthesis of phosphate double-bundled porphyrin; phosphate hydrolysis, that is, the synthesis of the target product tetraphosphate double-bundled porphyrin. The porphyrin of the present invention has saddle-shaped non-planar characteristics and excellent water solubility, and is a more ideal model compound for simulating the structure and function of the heme ligand; and its synthesis method has mild conditions, easy-to-obtain raw materials, fewer synthesis steps, and easy-to-use products. The purification and the yield of each step are relatively high; the introduction of phosphate not only improves the water solubility, but also widens the applicable range of pH value, and has better biological applicability. .
Owner:HUNAN UNIV OF SCI & TECH

a compensation circuit

The invention provides a compensation circuit, including: a power amplifier, a current bias circuit, a power detection circuit and a current control circuit; the power detection circuit is connected with the power amplifier, and is used to detect the voltage amplitude of the radio frequency input signal of the power amplifier, and the When the voltage amplitude satisfies the preset condition, a reference current is output; the current control circuit is respectively connected with the power detection circuit and the current bias circuit, and is used to receive the reference current output by the power detection circuit, and output the compensation current to the current bias based on the reference current circuit; a current bias circuit, connected to the current control circuit and the power amplifier respectively, for receiving the compensation current output by the current control circuit and generating a DC bias current, and outputting the compensation current and the DC bias current to the power amplifier; the power amplifier, It is connected with the current bias circuit and is used for receiving the compensation current and the DC bias current, and based on the compensation current and the DC bias current, the power of the radio frequency input signal is amplified.
Owner:GUANGZHOU HUIZHI MICROELECTRONICS

Information display screen for high-speed intelligent traffic

The invention discloses an information display screen for high-speed intelligent traffic. The information display screen includes a shell, and a display device is arranged on the inner side of the shell; a central control main board is arranged in the display device; an image sensing module is arranged on the side of the display device; a back working area is arranged on the rear side of the shell; and an air inlet is formed in one side of the shell, an air inlet fan is arranged at the position, corresponding to the air inlet, above the back face working area, a middle fixing frame is fixedlyconnected to the middle of the back face working area, and a heat conduction piece is fixedly connected to the bottom of the middle fixing frame. The invention relates to the technical field of intelligent traffic display. According to the information display screen for high-speed intelligent traffic, the heat dissipation efficiency is ensured, the purpose of dissipating heat of the high-speed intelligent traffic information display screen is achieved, operation and maintenance personnel make corresponding maintenance work according to prompts, the maintenance efficiency is improved, the timedelayed after damage is shortened, and the operation and maintenance personnel can know the situation without arriving at the use site of the machine.
Owner:宋凤玲

A resonant tube stacked woofer speaker and a coaxial horn three-way stacked speaker

ActiveCN106303808BReduce or even eliminate harmful standing wave frequenciesReduce controlFrequency/directions obtaining arrangementsLow frequency bandSound production
The invention relates to the technical field of electroacoustic devices, and particularly relates to a resonatron superimposed bass sound box and a coaxial horn three-frequency division superimposed sound box. The bass sound box comprises a box body, and a woofer, a longitudinal lifting platform, a transverse isolation plate, a front transverse resonance plate and a back transverse resonance plate, which are arranged in the box body, and a resonatron cavity in a folded shape on the whole and of a uniform section structure is formed in the box body; and the superimposed sound box comprises the bass sound box and a horn sound box arranged on a top wall plate of the bass sound box. Due to the isolated design of the inner space of the box body, a resonatron superimposed effect can be formed in the box body to inhibit and even eliminate harmful standing wave frequency in the box body, control the box sound and improve the sound production efficiency of the loudspeaker; by the match of the horn sound box and the bass sound box and the improvement on the structure of the horn sound box, a common phase frequency division and superimposed effect of high, medium and low frequency bands of the entire superimposed sound box can be realized, all kinds of distortion in a full frequency band are reduced, the bearing power of the sound box is improved, and the tone quality effect of the sound box is reinforced.
Owner:李齐车

Low-temperature distortion testing machine

The invention discloses a low-temperature distortion testing machine which comprises a testing support, the top of the testing support is connected with a transverse plate, one side of the bottom of the transverse plate is fixedly provided with a servo motor, the end of an output shaft of the servo motor is in transmission connection with a first rotating shaft, a second rotating shaft is arranged in the side, away from the first rotating shaft, of the transverse plate in a penetrating mode, and the second rotating shaft is rotationally connected with the transverse plate through a bearing. According to the invention, a low-temperature environment is simulated in a heat insulation wall through refrigeration and heating equipment, and a motor is switched on through a control box to drive the first rotating shaft, the second rotating shaft and a measurement cable to rotate, thereby achieving distortion of the measurement cable, the precision of a torsion angle is guaranteed by employing a PLC and a servo motor as main accessories, a large-current three-path collecting ring copper carbon brush holder is used, a touch screen is used as a human-computer interface, operation is convenient, the whole test data can be stored, and therefore the distortion performance of the measurement cable can be tested.
Owner:DALIAN TECHTRON CABLE
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