35results about How to "Corrected" patented technology

The spine corrector of the present invention is a medical mechanical appliance for correcting spinal curvature, which is composed of a base, a vertical lifting mechanism, a horizontal telescopic mechanism, a horizontal adjustment bar, a left and right vertical and horizontal adjustment mechanism and a pulsation correction arm. composition. The vertical lifting mechanism is fixed on the base by the flange, and the horizontal telescopic mechanism is fixedly connected to the upper end of the vertical lifting mechanism. The ends are respectively connected to the upper ends of the left and right vertical and horizontal adjustment mechanisms through the upper connector, the lower ends of the left and right vertical and horizontal adjustment mechanisms are connected to the left and right telescopic steering rods through the lower connector, and the pulsation correction arm and the left and right One end of the telescopic steering rod is connected, and the lower end of the pulsation correction arm is equipped with a correction head. The invention has the characteristics of novel structure, simple operation, remarkable curative effect, etc., and therefore belongs to a novel spine corrector integrating economy and practicability.

The invention relates to a light path structure of a prism-grating imaging spectrometer and belongs to the technical field of imaging spectra. The light path structure aims to solve the problems that in the prior art, spectral line distortion is large, and grating selection is unique. The light path structure comprises an entrance slit, a collimating objective, a prism-gating light distribution element, an imaging objective and an area-array detector. The collimating objective and the imaging objective are both batteries of lenses and can be designed to be of the same optical structure. The prism-gating light distribution element comprises a prism, a long pass light filter and a transmission grating, wherein the long pass light filter is arranged between the prism and the transmission grating. The transmission grating can be a volume-phase holographic transmission grating / surface etched transmission grating having high diffraction efficiency. Light going out of the entrance slit becomes parallel light beams after passing through the collimating objective, the parallel light beams irradiate into the prism-gating light distribution element. The parallel light beams pass through the prism, the long pass light filter and the transmission grating sequentially to achieve dispersive light distribution, and then dispersive light beams are imaged on the area-array detector through the imaging objective.

The invention discloses an optical lens, comprising a first lens, a second lens and a third lens arranged coaxially. The surface of the first lens is a spherical surface; the surfaces of the second and the third lenses are non-spherical surfaces. The surfaces of the second and the third lenses meet the function (refer to the Figure): the optical lens satisfies the following relationship: 1.25<f / L<1.4, 0.5<f1 / f<0.8, f2<0 and 0.65<|f2 / f|<1, 1.3<f3 / f<1.6, in which f is the effective focus of the optical lens, f1 is the effective focus of the first lens, f2 is the effective focus of the second lens, f3 is the effective focus of the third lens and L is the total length of the optical lens with an air compensated distance. The optical lens of the invention has the advantages of good imaging quality, short total length, high illumination, large angle of field coverage, small emergence angle, minimum relative illumination over 50%, smart volume, light weight and nice optical performance.

A beam hardening post-processing method that can improve the accuracy of channel-by-channel correction on a BH effect easily and yet taking a non-linear effect into account, phantoms of different diameters are disposed at a position offset from an imaging center to acquire projection information having a transmission length of an X-ray beam varying from view to view, hence, acquire projection information having a projection information value varying from view to view, for each channel, correction factors are determined, and a corrective function containing even a non-linear effect is determined by higher-order function fitting from the correction factors; and therefore, correction with high accuracy can be achieved in the channel-by-channel correction on the projection information values conducted after BH correction, and moreover, correction with high accuracy can be achieved using a smaller amount of phantom projection information, thus reducing the time for calibration work.

The invention relates to the optical field, and provides an optical lens assembly. The optical lens assembly comprises a first lens, a second lens and a third lens which are coaxially and sequentially arrayed from an object space to an image space, wherein the first lens is provided with a convex first surface and a concave second surface, the second lens is provided with a third surface and a fourth surface, and the third lens is provided with a fifth surface and a six surface; all the surfaces are aspheric surfaces; the optical lens assembly satisfies the following conditions that: L / f is more than 1.1 and less than 1.35, f1 is more than 0, the absolute value of f / f1 is more than 0.5 and less than 1.2, f2 is more than 0, the absolute value of f2 / f is more than 0.9 and less than 2.2, f3 is less than 0, and the absolute value of f3 / f is more than 0.55 and less than 2.2, wherein f and L are effective focal length value and total length of the optical system respectively; and f1, f2 and f3 are effective focal lengths of the first, second and third lenses. The total length of the lens is shortened by adopting the three lenses and the combination of positive, positive and negative diopters; and each aberration is welled corrected so that good optical performance is obtained.

The invention provides a large casting thermal shape righting method. The method comprises the following steps that a shape righting tool is provided, the shape righting tool comprises a base, a pressing plate, a supporting screw and a locking nut, the base is fixedly connected with the supporting screw, and the tail end of the supporting screw is in threaded connection with the locking nut; a casting is clamped between the base and the pressing plate, and the casting is subjected to shape righting by screwing the locking nut; solution treatment is carried out on the casting obtained after shape righting and the shape righting tool at the same time, that is, the casting and the shape righting tool are heated at the same time to the solution temperature of a casting material, and the casting and the shape righting tool are transferred into water immediately simultaneously, and are cooled to room temperature; and the casting subjected to solution treatment is taken down from the shape righting tool. By the adoption of the technical scheme, the casting and the shape righting tool are kept consistent in thermal deformation in the righting process, the size of the corresponding part onthe surface of the casting can be easily righted to be within the preset range, the situation that after the casting is taken down, the surface of the casting is deformed and rebounded is avoided, andthe casting correcting precision and the product percent of pass are improved.

The present invention relates to an apparatus for orthopedic correction. The apparatus includes a body framework, a chair head part, a body part and a lower apparatus. A chair head rotary control part, an assistant chair head rotary control part, a chair control part and an assistant chair control part enable the chair and a chair head support part to locate on accurate origin positions when the chair recovers to the original state so that the orthopedic correction is more accurately. The orthopedic correction ability is improved by safely fixing the patient body through the body part.

The invention discloses a text image rotation correction method and system. The text image rotation correction method at least includes: preprocessing the text image to be corrected to generate a binarized image; performing connected domain analysis on the binarized image to generate a character area , and extract the text line direction angle on the character area map; according to the text line direction angle, generate a text line angle histogram; according to the text line angle histogram, calculate the to-be-rotated angle of the text image to be corrected; according to the to-be-rotated angle, the The text image to be corrected is rotated and corrected. The present invention extracts the direction of the text line through the text aggregation characteristics in the image, and calculates the rotation angle. Compared with the situation where the edge of a single character area is unstable in the existing method, the rotation angle calculated by this method is more stable and more robust. Rodness, so as to obtain a more ideal corrected image, and the text image rotation correction method is simple and efficient in calculation, and can run even on smart terminals with average computing power.

The invention relates to the optical field, and provides an optical lens assembly. The optical lens assembly comprises a first lens, a second lens and a third lens which are coaxially and sequentially arrayed from an object space to an image space, wherein the first lens is provided with a convex first surface and a concave second surface, the second lens is provided with a third surface and a fourth surface, and the third lens is provided with a fifth surface and a six surface; all the surfaces are aspheric surfaces; the optical lens assembly satisfies the following conditions that: L / f is more than 1.1 and less than 1.35, f1 is more than 0, the absolute value of f / f1 is more than 0.5 and less than 1.2, f2 is more than 0, the absolute value of f2 / f is more than 0.9 and less than 2.2, f3 is less than 0, and the absolute value of f3 / f is more than 0.55 and less than 2.2, wherein f and L are effective focal length value and total length of the optical system respectively; and f1, f2 andf3 are effective focal lengths of the first, second and third lenses. The total length of the lens is shortened by adopting the three lenses and the combination of positive, positive and negative diopters; and each aberration is welled corrected so that good optical performance is obtained.

The invention relates to a design method for a novel multi-optical axis progressive multi-focal lens. Compared with traditional progressive multi-focal lenses, progressive lenses are designed in consideration of multiple optical axes; a plurality of progressive spherical or non-spherical small pupils are arranged on a lens; a focal power is correspondingly designed for the optical axis of each incoming lens corresponding to one spherical or non-spherical small pupil; and the front surface or the back surface of the whole progressive lens corresponding to the plurality of the spherical or non-spherical small pupils is integrally fitted. The mean-square deviation of the surface shape in each spherical or non-spherical small pupil relative to the spherical surface is greatly reduced, and in particular, blind areas in observable areas are greatly reduced relative to other progressive multi-focal lenses when eyes move side to side. Through the design method, actual use habits of human eyes are better combined and a visual function can be progressively and best corrected from a long distance, a middle distance and a near distance.

The invention belongs to the technical field of I-beam correction, in particular to a giant I-beam correction system. The system comprises a working frame body and a controller; the working frame is provided with a first correction unit and a second correction unit, the first correction unit includes a first double-shaft cylinder, a first cylinder and a first correction plate, and the first double-shaft cylinder and the first cylinder are electrically connected to the controller; the input end of the first double-shaft cylinder is fixedly connected with the side wall of the working frame body,and the input end of the first cylinder is fixedly connected to the output end of the first double-shaft cylinder; the first correction plate is fixedly connected to the output end of the first cylinder; the second correction unit comprises an electric push rod and a second correction plate, and electric push rods are symmetrically arranged with the center line in the vertical direction of the working frame body as a reference; the system has a novel design and can correct a giant I-beam in all directions.

The invention discloses an optical lens, comprising a first lens, a second lens and a third lens arranged coaxially. The surface of the first lens is a spherical surface; the surfaces of the second and the third lenses are non-spherical surfaces. The surfaces of the second and the third lenses meet the function (refer to the Figure): the optical lens satisfies the following relationship: 1.25<f / L<1.4, 0.5<f1 / f<0.8, f2<0 and 0.65<|f2 / f|<1, 1.3<f3 / f<1.6, in which f is the effective focus of the optical lens, f1 is the effective focus of the first lens, f2 is the effective focus of the second lens, f3 is the effective focus of the third lens and L is the total length of the optical lens with an air compensated distance. The optical lens of the invention has the advantages of good imaging quality, short total length, high illumination, large angle of field coverage, small emergence angle, minimum relative illumination over 50%, smart volume, light weight and nice optical performance.

The invention relates to a back bone corrector, and relates to a medical and mechanical appliance for correcting the bending of the back bone. The medical and mechanical appliance comprises a bottom seat, a longitudinal elevating mechanism, a lateral stretching mechanism, a horizontal adjusting press rod, left and right vertical adjusting mechanisms, left and right horizontal adjusting mechanismsand a pulse corrective arm. The longitudinal elevating mechanism is fixed on the bottom seat by a flange, the lateral stretching mechanism is firmly connected with the upper end of the longitudinal elevating mechanism, the other end of the lateral stretching mechanism is connected with the intermediate location of the horizontal adjusting press rod through an overarm brace, both ends of the horizontal adjusting press rod are respectively connected with the upper ends of the left and the right vertical adjusting mechanisms through upper connectors, the lower ends of the left and the right vertical adjusting mechanisms and the left and the right horizontal adjusting mechanisms are connected with the left stretching deflecting rod and the right stretching deflecting rod through lower connectors, the pulse corrective arm is connected with one end of the left stretching deflecting rod and the right stretching deflecting rod, and a correcting head is arranged at the lower end of the pulse corrective arm. The invention is characterized in that the structure is novel, the operation is simple, the curative effect is obvious, thereby, and the invention belongs to a novel back bone correctorintegrating with the economical efficiency and the practicability into a whole.