72 results about "Homogeneity testing" patented technology

The invention relates to a parasitic light test set, which comprises an integrating sphere, an optical source, a target plate, a variable optical diaphragm, a detector, an adjusting bracket, and a four-dimension travel mechanism; the detector can be translated along the three-dimension (X, Y, Z) on the four-dimension travel mechanism, and can also be rotated around the Y axle along the horizontal direction. The invention can make the uniformity test to image-plane irradiance, and can also realize the test of the optical system parasitic light factor when the image-plane is a flat surface or a spherical surface.

The invention discloses a radiation field uniformity calibration positioner, which comprises a vertical connected rod, a bottom plate, a horizontal connected rod and a horizontal sleeve; the bottom end of the vertical connected rod is fixed on the bottom plate; the horizontal sleeve is sleeved on the vertical connected rod, and can axially slide along the vertical connected rod; an axial positioning mechanism is arranged on the horizontal sleeve and / or the vertical connected rod, and is used for axially fixing the horizontal sleeve on the vertical connected rod; one end of the horizontal connected rod is fixed on the horizontal sleeve and is perpendicular to the vertical connected rod, and the other end of the horizontal connected rod is used for fixing an electric field probe; and the cross-sectional area of the horizontal connected rod is smaller than the cross-sectional area of the vertical connected rod. The radiation field uniformity calibration positioner can increase the accuracy of a radiation field uniformity test result and the efficiency and accuracy of radiation field uniformity calibration positioning operation.

The invention provides a device capable of judging the optical wave deformation direction in an optical homogeneity test with low cost. The optical glass optical homogeneity test device comprises a Fizeau interferometer. A direction determining standard sample is disposed between a beam splitter and a reflector on the Fizeau interferometer. The invention directly arranges the direction determining standard sample between the beam splitter and the reflector on the Fizeau interferometer. The device has the advantages of simple structure, convenient maintenance, low cost and convenient test method and is in particular suitable to test of the large optical glass.

The invention discloses a cotton cloth color-fastness-to-rubbing grading standard sample. A color-fastness-to-rubbing testing result of the standard sample is ranged from grade 2 to grade 5 and includes the daily detection range of the color fastness to rubbing in current textile and clothing fields. A method mainly includes the following preparation steps: preparation of grey fabrics, pre-treatment, dyeing, dewatering and drying, tentering, cloth inspection and coiling, sample preparation, homogeneity testing, stability testing, and packaging. The standard sample is easy to preserve and transport, and the uniformity and stability are in accordance with regulations through verification. The cotton cloth standard sample for textile color-fastness-to-rubbing grading is suitable for textile color-fastness-to-rubbing detection personnel to use in proofreading of detection process and detection results, technical training, result comparison, ability verification and the like in the inspection agencies and production and circulation fields. The standard sample can solve the problems of single quality control method and laboratory ability evaluation universally existing in the present-stage detection agencies and production and circulation fields, and can ensure the accuracy and consistency of experimental results.

The invention provides an imaging uniformity testing device for a large-aperture low light level image intensifier. The device comprises a testing camera obscura, a three-dimensional adjustment platform, a camera, an integrating sphere system, a turntable device, a stopper and a large-range illuminance variable light source, wherein a light output hole, a rotating shaft vent hole and a spacing hole are formed in the bottom of the testing camera obscura; the three-dimensional adjustment platform is arranged at the bottom of the testing camera osbcura; the camera is arranged on the three-dimensional adjustment platform and is driven by the three-dimensional adjustment platform to move in the space; the light output hole of the large-range illuminance variable light source is connected with a light input hole of an integrator, and two self-tightening replaceable diaphragms and an aperture variable weak light target are arranged on the light path emitted by the large-range illuminance variable light source; and the turntable device comprises a rotating shaft, a turntable and a plurality of light output sleeves with different diameters, the turntable shaft is rotated to drive the turntable to rotate, so that different light output sleeves are sequentially positioned above the light output hole of the integrating sphere system, and the stopper is arranged in the corresponding spacing groove.

Methods and systems for improving the uniformity of a tire by determining one or more high speed uniformity parameters of the tire are provided. The high speed uniformity parameters can be determined by continuously acquiring uniformity data while ramping the tire to and from high speeds. For instance, measured uniformity data can be continuously collected for the tire as the tire is increased to high rotational speeds and decreased from high rotational speeds. The measured uniformity data can then be analyzed to determine one or more high speed uniformity parameters for the tire. For instance, the measured uniformity data can be corrected for non-high speed uniformity contributions to the uniformity measurements, such as contributions resulting from non-uniformity of a road wheel use to load the tire during uniformity testing, contributions resulting from mass unbalance of the tire, and contributions from low speed uniformity parameters of the tire.

The invention discloses a method for predicting personalized preference of a user through eye movement data. The method comprises the steps that (1) design elements are extracted, wherein a product picture is selected, and a semiotic and morphological analysis method is adopted to perform structure disintegration and design element extraction on a pattern of the picture; (2) eye movement indicators are screened, wherein a picture type is used as an influence factor, variance homogeneity testing is performed on user eye movement indicators with browsing tasks, single-factor variance analysis is further performed, and the eye movement indicators are screened; and (3) a relation model of the design elements and the eye movement indicators is established, wherein a quantification-I theory is adopted to encode the design elements of the pattern, the qualitative variable pattern is converted into a quantitative variable pattern, a multiple regression model of the eye movement indicators and the design elements is established, and influences of different design elements on the personalized preference of the user are obtained. The method has the advantages that the relation model of the eye movement data and the design elements can be established, and the influences of different design elements on the personalized preference of the user can be reflected.

The invention discloses a photomultiplier tube homogeneity testing system and method based on a galvanometer. The testing system comprises a light source, a collimator, a diaphragm, an optical filter, the galvanometer and a computer. The galvanometer comprises two opposite reflectors. A computer is used for controlling the angles of the two reflectors so that the reflection angles of light beams passing through the reflectors can be controlled, the light beams reflected by one reflector scan in one direction, the scanning directions of the two reflectors are perpendicular to each other, and therefore two-dimensional scanning of the surface of a PMT can be finished through cooperation of the two reflectors. According to the system, no connecting lines exist in a light path, setting up is easy to carry out, and a position is easy to correct; the PMT is easy to replace, and the homogeneity of a large number of PMTs can be tested; the control precision of the galvanometer is high, precise displacement of the light beams on the PMT can be ensured, and each effective detection unit of the surface of the PMT can be traversed; by selecting different optical filter types, the system can be widely used for testing the homogeneity of the PMTs with different wave lengths.

A system (10) for testing an implement (W, T, TWNI, TWI) is disclosed. The system (10) includes: a computing resource (12), an implement rotating device (14), a light emitting device (16) and a light receiving device (18). The implement rotating device (14) rotatably supports the implement (W, T, TWNI, TWI). The implement rotating device (14) is communicatively-coupled to the computing resource (12). The light emitting device (16) is communicatively-coupled to the computing resource (12). The light receiving device (18) is communicatively-coupled to the computing resource (12). The implement rotating device (14) and the implement (W, T, TWNI, TWI) are arranged between the light emitting device (16) and the light receiving device (18). The light emitting device (16) and the light receiving device (18) are substantially linearly-aligned with the implement rotating device (14) and the implement (W, T, TWNI, TWI) such that upon activating the light emitting device (16), light (L) that is emitted by the light emitting device (16) is directed toward both of the implement (W, T, TWNi, TWi) and the light receiving device (18) whereby the light receiving device (18) captures an image corresponding to a portion (L2) of the light (L) emitted by the light emitting device (16) and a shadow (L1') formed by at least a portion of the implement (W, T, TWNI, TWI). The shadow (L1') corresponds to another portion (L1) of the light (L) that is not received by the light receiving device (18). The light receiving device (18) communicates the captured image to the computing resource (12) for determining uniformity or a lack of uniformity of the implement (W, T, TWNI, TWI). A method (100) for utilizing the system (10) is also disclosed. A computer program product is also disclosed.

The invention provides a manufacture method of a zinc-iron alloy standard template, which comprises four steps of sampling, homogeneity testing, benchmark curve manufacture and value definition. The zThe invention provides a manufacture method of a zinc-iron alloy standard template, which comprises four steps of sampling, homogeneity testing, benchmark curve manufacture and value definition. The zinc-iron alloy standard template provided by the invention covers total process ranges, gives accurate data, and can be used for the calibration of online measuring instruments of the zinc-iron alloyinc-iron alloy standard template provided by the invention covers total process ranges, gives accurate data, and can be used for the calibration of online measuring instruments of the zinc-iron alloyzinc layer and iron content, thus realize that an online coating thickness gage can rapidly and accurately measure the zinc layer and the iron content in alloying products in real time, and meeting thzinc layer and iron content, thus realize that an online coating thickness gage can rapidly and accurately measure the zinc layer and the iron content in alloying products in real time, and meeting the requirement of high-precision production of zinc-iron alloy.e requirement of high-precision production of zinc-iron alloy.

The invention discloses a test system on the evenness of transmittance of ultraviolet ray passing through the semi-conductor film material, and the test system is used for detecting the evenness of transmittance of ultraviolet ray passing through the semi-conductor film material. The test system consists of a light source, a monochromator, an optical system, a two-dimensional progressive scanner, a signal receiver, a data process device and a computer. The system utilizes the characteristic that the transmittance of the ultraviolet band semi-conductor extending material is really sensitive around the absorbing edge, and detects and analyzes the face distribution of the transmittance in the related wavelength around the absorbing edge, thereby giving a quantitative analysis and evaluation on the evenness of the material.

The invention provides a near infrared testing device of tobacco feeding uniformity which is characterized by comprising a light source, a splitter AOTF of an acousto-optic tunable filter light, an adjustable RF source, a fiber optic diffuse reflection probe, a reference light detector, a measuring light detector, a computer and a printer. The adjustable RF source is respectively and electrically connected with the AOTF and the computer; one end of the reference light detector is optically connected with the AOTF and the other end is electrically connected with an industrial computer; the fiber optic diffuse reflection probe is respectively and optically connected with the AOTF and the measuring light detector which is electrically connected with the industrial computer; the measuring light is projected onto the detected tobacco through the probe and is received by the measuring light detector through the diffuse reflection of the tobacco; the reference light detector and the measuring light detector respectively send the signals into the industrial computer for comparative analysis and processing to get feeding characteristics of the detected tobacco. The device has the outstanding advantages that the detected tobacco is not polluted; the physical characteristics of the detected tobacco are not destroyed; and the even degree of the feed solution which is sprayed on the tobacco can be quickly and automatically measured.

The invention discloses a CR / DR (Computed Radiography / Direct Radiography) comprehensive detection die body and belongs to a die body for the detection of a medical X-ray photography system. Transverse and longitudinal measuring rulers and three groups of image uniformity test points are arranged on the surface of a square pure-aluminum plate with the thickness of 20mm and the side length of greater than 430mm. 16 or 19 holes with the same diameter and sequentially decreasing depth are arranged on the surface of the pure-aluminum plate so as to be used as a low-contrast test card. The CR / DR detection die body disclosed by the invention is integrated with a ray field and light field consistency test card, a low-contrast test card and image uniformity test points, has high detection efficiency and is easy to operate and convenient to use.

The invention discloses a light guide device and a film uniformity testing apparatus and method. The light guide device that is used for outputting light to a to-be-tested device and recovering reflected light comprises at least one incident light guide element and a plurality of reflective light guide elements. The two ends of the incident light guide element are an incident end and a transmitting end; the incident light guide element is connected with a light source device optically; and light is inputted into the incident light guide element through the incident end. A reflection end and an output end are formed at the two ends of each of the plurality of reflective light guide elements; the plurality of reflection ends are parallel to and are aligned at the transmitting end and encircle the periphery of the transmitting end; and the output ends are in light connection with optical testing device. The transmitting end of the incident light guide element and the reflection ends of the reflective light guide elements form a testing end of the light guide device; and the testing end is perpendicular to and is aligned at the surface of the to-be-tested device. In addition, a film uniformity testing apparatus is capable of testing the intensity of light outputted by the output ends so as to represent the uniformity of the film for reflection indirectly.

The invention discloses a gesture recognition module test machine and a test method thereof. The test machine comprises a box body, wherein the box body is provided with an accommodation cavity; a test standard board, wherein the test standard board is arranged in the accommodation cavity; and a module positioning device, wherein at least one gesture recognition module is suitable for being detachably arranged in the module positioning device, and the module positioning device equipped with the gesture recognition module is suitable for being placed in the accommodation cavity so as to facilitate test. The gesture recognition module can finish various kinds of test items in the gesture recognition module test machine, such as gesture recognition module frame test, thermal noise test, blocker effect test, gesture recognition module infrared LED lamp working condition test, uniformity test, vignetting test, glare test, gesture recognition module calibration test and gesture recognition module three-dimensional overall test and the like.

The invention puts forward an optical glass material homogeneity detection method. A detected lens is divided into at least three sub-aperture areas, the material homogeneity of each sub-aperture area is calculated, and then, the material homogeneity of the detected lens is calculated using a sub-aperture stitching algorithm. In addition, the tilt posture of the detected lens is monitored and collected by a monitoring interferometer and a lateral plane mirror, and therefore, the homogeneity test results of different sub-apertures are completely consistent in tilt state. The amount of 'tilt' introduced to the sub-aperture interference detection result by de-focusing and astigmatism in homogeneity can be truly retained, so that splicing trace discontinuity in full-aperture homogeneity of the detected lens is avoided. According to the method put forward by the invention, in the process of large-aperture optical glass material homogeneity detection using a small-aperture phase-shifting interferometer, absolute detection of all wave aberrations of material homogeneity can be realized, and detection error caused by splicing trace discontinuity can be eliminated.

A method and system includes a first substrate and a second substrate, each substrate comprising a predetermined baseline transmittance value at a predetermine wavelength of light, processing regions on the first substrate by combinatorially varying at least one of materials, process conditions, unit processes, and process sequences associated with the graphene production, performing a first characterization test on the processed regions on the first substrate to generate first results, processing regions on a second substrate in a combinatorial manner by varying at least one of materials, process conditions, unit processes, and process sequences associated with the graphene production based on the first results of the first characterization test, performing a second characterization test on the processed regions on the second substrate to generate second results, and determining whether at least one of the first substrate and the second substrate meet a predetermined quality threshold based on the second results.

The invention provides a test method for the temperature evenness of a hot plate, which comprises the following steps: two asymmetric patterns are placed on a photolithographic mask, the distance between the two asymmetric patterns is D1, and the distance between the center lines of the two asymmetric patterns is L1; a PEB (Post Exposure Bake) temperature is set; an exposured round disc with two asymmetric patterns is subjected to PEB, so as to form latent image patterns, wherein the D1 is changed to D2 and the L1 is changed to L2; and the two asymmetric patterns form counterpoint marks or specific test structures of a photolithographic machine, the counterpoint system of the photolithographic machine is utilized to test the coordinates / distance of each counterpoint mark or specific test structure, the difference between the test value and a theoretic value is obtained, so as to quantitatively reflect the temperature evenness of the hot plate. The invention quantitatively reflects the temperature evenness of the hot plate by utilizing the property of shifting of the center positions of the latent image images which are formed in the way that the asymmetric patterns is subjected to PEB.

The present invention discloses a near-infrared detector uniformity test system. The system comprises a light avoiding box holding a near infrared detector to be tested; an integrating sphere is arranged at the opening of the front end of the light avoiding box; the light avoiding box is internally provided with a cold shield located on the emitting light path of the integrating sphere to the near infrared detector to be tested and internally provided with a heat exchanger for supporting the near infrared detector and the cold shield and a lifting platform for supporting the heat exchanger; a cycle liquid refrigerating machine and a filling nitrogen device are arranged at the outside of the light avoiding box; the cycle liquid refrigerating machine and the filling nitrogen device are connected with the heat exchanger to form a circulation pipeline; and the filling nitrogen device lets the nitrogen in the light avoiding box through the pipeline. The near-infrared detector uniformity test system provides stable low-temperature, low-background radiation and drying test environment and test state for the uniformity test of the near infrared detector.

The present invention discloses a display screen uniformity test method. The method comprises: obtaining a presetting image template and the display state image of a display screen to be tested, and performing zooming processing of the image template to generate a template image having the same size as the display state image; performing the superposition processing of the display state image and the template image to obtain a superposition image, and calculating the pixel value mean of the superposition image; and obtaining a presetting reference mean, comparing the pixel mean with the reference mean, and outputting the uniformity test result of the display screen to be tested according to the comparison result. The present invention further discloses a display screen uniformity test system. According to the technical scheme, the accuracy of the uniformity test result of a display screen is improved.

The invention discloses a cotton cloth color-fastness-to-water grading standard sample. A color-fastness-to-water testing result of the standard sample to water is ranged from grade 2 to grade 5 and includes the daily detection range of the color fastness to water in current textile and clothing fields. A method mainly includes the following preparation steps: preparation of grey fabrics, pre-treatment, dyeing, dewatering and drying, tentering, cloth inspection and coiling, sample preparation, homogeneity testing, stability testing, and packaging. The standard sample is easy to preserve and transport, and the uniformity and stability are in accordance with regulations through verification. The standard sample for cotton cloth color-fastness-to-water grading is suitable for textile color-fastness-to-water detection personnel to use in proofreading of detection results, technical training, result comparison, ability verification and the like in the inspection and detection agencies and production and circulation fields. The standard sample can solve the problems of single quality control method and laboratory ability evaluation universally existing in the present-stage detection agencies and production and circulation fields, and can ensure the accuracy and consistency of experimental results.

A fuel cell plate flow field cavity uniform test method and a test device, the test device comprises a pressure meter, a pressure difference meter, an adjustment valve and a flow meter which are connected by a circuitry, the test method is that the upper part of the plate tested flow field is provided with a part being similar to an MEA part, which constitute a component after forming a flow field cavity, and the component is sealed by adopting the same sealing method with a fuel cell, then the component is positioned between two end plates; the input pipeline of the same flow field cavity is connected with the pressure meter, the input gas pressure is monitored, and a definite flux gas is flowed into the input, the output pipeline is connected with a gas adjustment valve and the flow meter to adjust and monitor the flowed gas flux; a pressure difference meter is connected between the input and the output, the pressure difference value of same flow field cavity of each tested plate is recorded and compared, the tested pressure difference values of same flow field cavity of a passel of tested plate is calculated to obtain the average value, a uniformity standard of the flow field cavity is confirmed, and accordingly the unqualified plate is tested and judged.

The invention provides a device for testing absolute spectrum transmittance and uniformity thereof of an off-axis multi-lens space camera, belongs to the field of space optics, and aims at solving the problem of the off-axis multi-lens space camera that only the average transmission in a broadband is tested, or the transmission at some single wavelength position is tested, and the transmission of each wavelength position in the whole band cannot be tested. The device is characterized in that an all-band collimated radiating lighting source is fixed on a precise moving guide rail; the radiating light emitted by the all-band collimated radiating lighting source can be adjusted to be parallel to an optical axis of an optical system of the off-axis multi-lens space camera and then is imaged on a focus plane after passing through the optical system; an absolute spectrum radiation receiver is fixed the precise moving guide rail; an light inlet of the absolute spectrum radiation receiver can be adjusted to be reach the focus plane; a main control computer sends a control instruction to a controller, the controller controls the precise guide rail to drive the all-band collimated radiating lighting source to move, and the precise guide rail drives the absolute spectrum radiation receiver to move, so as to test the spectrum radiation quantity at different positions in the length direction of the focus plane.

A thermostatic bath performance testing method includes the steps: setting a serial port number and a Baud rate of a temperature testing device; placing a fixed thermometer and a movable thermometer at corresponding testing points of a tested thermostatic bath, and respectively reading a fixed thermometer value and a movable thermometer value of a fixed thermometer channel and a movable thermometer channel of the temperature testing device according to the Baud rate and the serial port number after output data of the temperature testing device are stable; writing the fixed thermometer value and the movable thermometer value of the testing points into a fluctuation and uniformity array to obtain temperature acquisition data; calculating fluctuation parameters and uniformity parameters of the thermostatic bath according to the temperature acquisition data, and acquiring fluctuation and uniformity testing results of the tested thermostatic bath. By the thermostatic bath performance testing method, the temperature data are automatically acquired and processed, testing efficiency is improved, thermostatic bath performance testing automation is realized, and testing accuracy can be improved.

The invention relates to an illumination uniformity tester and a test method. The tester comprises a sliding rail, a sliding block, an optical detector, a first motor, a second motor, a base, a controller and a data collector, wherein the first motor controls the sliding rail to rotate by taking a motor rotating shaft as a center; the motor rotating shaft is located at the light spot center of a sun simulator, and the rotating plane of the sliding rail is located at the irradiation surface of the sun simulator; the second motor controls the sliding block to move on the sliding rail along the radial direction; the controller is used for sending a motor control instruction to the first motor and the second motor; and the optical detector is installed on the sliding block and used for measuring the light intensity and sending the measured light intensity to the data collector. The tester can realize the testing for multiple measurement points in the irradiation surface by only one or twooptical detectors through combining the rotation of the sliding rail along the circumferential direction and the movement of the sliding block in the radial direction, improves the measurement accuracy and is particularly applicable to illumination uniformity testing for the sun simulator with a large light spot size.

The invention discloses a testing device of coagulated frost depth and deformation non-uniformity of a surface of a porous asphalt mixture and a method thereof. The testing device comprises a cylindercontainer made of organic glass, an atomizer, a temperature-humidity controller, a strain tester and a CT scanner. The method comprises the following steps: firstly scanning a porous asphalt mixtureMarshall specimen by using the CT scanner and reconstructing to obtain a specimen three-dimensional model, then pasting a plurality of resistance strain gages on the side of the specimen along a circumferential direction, putting the specimen in the cylinder container and putting the cylinder container into a refrigerator, then introducing water vapor atomized by the atomizer, enabling the humidity in the cylinder container to be stabilized at 96%-98% by using the temperature-humidity controller, collecting readings of the resistance strain gages by using the strain tester, calculating non-uniformity coefficient and evaluating the deformation non-uniformity of the porous asphalt mixture, finally scanning the specimen again and reconstructing a model, and measuring the coagulated frost depth by using Boolean calculation. The testing method and the device thereof are capable of quantitatively evaluating the coagulated frost depth and the deformation non-uniformity of the surface of the porous asphalt mixture.

The invention discloses a Cyclovirobuxine-D raw material drug and high efficiency liquid chromatography mensuration for Cyclovirobuxine-D content in different kinds of preparation, and high efficiency liquid chromatography for impurity testing in Cyclovirobuxine-D. The fixed phase in chromatographic condition uses octadecyl silane linkage silica gel or octyl silane linkage silica gel as filling material; The mobile phase adopt formate (ammonium formate) damping fluid-methanol system, acetic acid (ammonium acetate) damping fluid-methanol system, formate (ammonium formate) damping fluid-acetonitrile system or acetic acid (ammonium acetate) damping fluid-acetonitrile system; Evaporation light scattering detector (ELSD) detects drift tube temperature; drift tube temperature: 20-150 degree centigrade;and gas flow rate: 0.1L / min- 6.0L / min, split-flow or not split stream sampling. The method is easy to operate, timesaving, and has strong expert attribute. It could effectively divide some kind of alkaloids that has with Cyclovirobuxine-D in Cyclovirobuxine-D raw material drug. Thus, it is able to accurately measure their content. The method could also detecting impurity in Cyclovirobuxine-D. The invention could also measure content degree of homogeneity of Cyclovirobuxine-D in boxwood-nin piece, boxwood-nin drop pill, and boxwood-nin powder pin. And it commendably satisfies the request of pharmacopoeia content and content degree of homogeneity testing.