125 results about "Monochromator" patented technology

The invention is suitable for the field of electrochemical luminescence detection equipment, and provides a dispersion device suitable for electrochemical luminescence detection, which comprises a monochromator body, the monochromator body is composed of a monochromator housing, a reflector assembly, a grating assembly, a collimating mirror assembly, a focus lens assembly, a slit, a flange snap ring and a flange; an M-shaped light path is arranged in the monochromator body, and a slit, a reflector assembly, a collimating mirror M1 in the collimating mirror assembly, a customized blazed grating G1 in the grating assembly and a focusing mirror M2 in the focusing mirror assembly are sequentially arranged in the light propagation direction. The customized blazed grating G1 is designed by adopting specific parameters including the scribed line density, the blazed wavelength, the notch groove depth and the groove width ratio, and primary light energy enhancement and secondary light intensity suppression can be realized; according to the invention, an optical filter is not needed, the diffraction efficiency of a monochromator is improved to 60-86%, the intensity ratio of luminol secondary light to primary light is less than or equal to 1.6%, the detection limit of ruthenium bipyridine is reduced from 100pmol / L to 50pmol / L, and the electrochemical luminescence detection device is suitable for various electrochemical luminescence detection scenes.

The utility model discloses a self-calibration multi-grating monochromator. The self-calibration multi-grating monochromator comprises a self-calibration assembly, a grating spectrum system assembly and an optical receiver. The self-calibration assembly comprises a focus lens, a standard light source and a single-face reflector. And the standard light source is used for emitting a light beam with a specified wavelength to the single-sided reflector. And the single-sided reflector is used for reflecting the light beam to the focus lens, and the light beam is focused to the incident end of the grating spectrum system assembly through the focus lens. According to the utility model, an automatic calibration structure composed of the standard light source and the single-sided reflector is arranged at the incident end of the grating spectrum system assembly, so that the monochromator can emit a light beam with a specified wavelength through the standard light source when being used for a long time, and automatic calibration of the grating spectrum system assembly is realized in cooperation with the light receiver. Besides, the single-sided reflector is installed on the sliding rotary table, so that the single-sided reflector gives way when the grating spectrum system assembly is normally used, and interference with external light is avoided when the grating spectrum system assembly is normally used.

The invention relates to a broadband continuous testing device and method for diffraction efficiency of a medium-long wave infrared grating. The device comprises a broadband light source, a medium-long wave infrared monochromator, a collimation system, a polarization selection system, a broadband spectrum beam splitting system, a signal enhancement detection system, a sample clamping and multi-dimensional moving system and an automatic control system. According to the testing method, the absolute diffraction efficiency of the grating is tested through double optical paths, measurement errors caused by fluctuation of a light source can be avoided, the measurement errors are further reduced by deducting environmental noise and improving the signal-to-noise ratio through a signal enhancement detection system, an automatic control system is added, and continuous scanning testing in a specified wave band is achieved. The test speed is improved. By means of the device and the method, automatic and rapid measurement of the diffraction efficiency of the medium-long wave echelette grating under the conditions of at least 2.5-14 micron broadband, different wavelengths, any incident angle and dual polarization states can be achieved.

1. The name of the design product: vacuum ultraviolet spectrometer. 2. The use of the design product: the product is used in monochromator for separating the light emitted by the light source into the required monochromatic light. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The invention discloses an in-situ ultraviolet and visible spectrophotometer with high measurement precision, and relates to the technical field of ultraviolet and visible spectrophotometers, the in-situ ultraviolet and visible spectrophotometer comprises a bottom shell, an optical unit is arranged on the inner wall of the bottom of the bottom shell, and a light source module and a monochromator are arranged in the optical unit; the top of the optical unit is fixedly connected with an operation platform through a supporting rod, the top of the operation platform is provided with a motor mounting frame, the top of the motor mounting frame is provided with a linear motor, the output end of the linear motor is connected with a lifting fixing plate, and the lifting fixing plate is of a Z-shaped structure. The end, away from the linear motor, of the lifting fixing plate is connected with a light shield, and the top of the light shield is provided with an optical fiber clamping frame. According to the method, result deviation caused by dilution multiple estimation errors in a traditional method is avoided, the dilution frequency of the high-concentration sample is reduced, reagent consumption and waste liquid generation are reduced, and the method conforms to the green analytical chemistry concept.

The utility model provides a high-frequency monochromator, which is characterized by comprising a spectrograph and a scanning emitting mechanism, and the scanning emitting mechanism is loaded after the spectrograph emits a light beam. An entrance slit, a spectrograph, a field diaphragm, a collimation optical assembly, a rotary reflector or a rotary reflector with a grating light splitting function, a convergence imaging assembly and an exit slit are sequentially arranged along a light path, and light is emitted through the field diaphragm and the exit slit to form an L-shaped light path; the entrance slit, the spectrograph, the field diaphragm, the collimation optical assembly, the rotary reflecting mirror or the rotary reflecting mirror with the grating light splitting function, the convergence imaging assembly and the exit slit are all vertically fixed to the horizontal plane, and the rotary reflecting mirror or the rotary reflecting mirror with the grating light splitting function is arranged at the switching position of the L-shaped light path; the monochromator is simple in light splitting structure and efficient in light splitting.

The monochromator comprises a base, a supporting seat, a grating assembly, a posture adjusting mechanism and a sine mechanism, the supporting seat is movably arranged on the base, the grating assembly comprises a grating, the grating is arranged on the supporting seat, the posture adjusting mechanism is arranged on the supporting seat and connected with the grating, and the sine mechanism is arranged on the supporting seat and connected with the grating. The posture adjusting mechanism is used for adjusting the posture of the grating, and the sine mechanism is arranged on the base, connected with the grating and used for controlling the grating assembly to rotate relative to the supporting base. According to the monochromator provided by the embodiment of the invention, the movable supporting seat, the posture adjusting mechanism and the sine mechanism are arranged, so that the grating posture and grating scanning can be accurately and quickly collimated, the efficiency and precision of the grating posture and grating scanning can be improved to a certain extent, and data collected by the monochromator in a subsequent test is more accurate.

The present application relates to the technical fields of spectral analysis and substance detection, and discloses a deuterium lamp device and an atomic absorption spectral analysis method and system using the deuterium lamp. The system comprises a hollow cathode lamp unit, a built-in hollow cathode lamp emitting a first light beam after preheating under power supply; a first lens, a second lens and a third lens, a deuterium lamp device for emitting a second light beam at a first frequency under the driving of a pulse power supply; a sample cell for internally placing a sample to be measured in a combustion state; a monochromator for performing spectral processing on the incoming first light beam and / or the second light beam, and outputting the spectrally processed light signal to a photoelectric detector; the photoelectric detector for photoelectrically converting the light signal output by the monochromator to obtain an electric signal; and a data processing unit for analyzing and processing the electric signal of the photoelectric detector to obtain an analysis result. The present application can realize more accurate background deduction and improve the accuracy and reliability of atomic absorption spectral measurement.

The invention discloses a high-precision calibration method of a hyperspectral laser radar for photon counting, which belongs to the technical field of laser radars and comprises a spectrum calibration stage and a radiation calibration stage. Spectral calibration is used for extracting spectral response parameters of each channel based on wavelength-by-wavelength scanning of a monochromator and synchronous measurement of a beam splitter; a detection link is strictly decoupled through radiometric calibration, the effective attenuation coefficient of a water body is extracted in situ through a slope method, full-link radiation correction is carried out in combination with an air whiteboard reference and window transmittance, and the target intrinsic spectral reflectivity without interference is inverted. The method can be used for data correction, target accurate classification and identification and high-fidelity quantitative detection of the hyperspectral laser radar for photon counting, and solves the problem of serious spectral distortion of an original signal caused by non-uniform light source energy of the hyperspectral laser radar and complex scattering absorption of a water body.

The invention relates to the technical field of X-ray optics and spectral analysis, in particular to a multi-objective optimization design method and system for an X-ray fluorescence spectrum monochromator, and the main points of the technical scheme are as follows: S1, parameter and database input, S2, source spectrum generation and calibration, S3, monochromator dynamics solution, S4, multi-scheme comprehensive scoring and optimization selection, and S5, XRF forward modeling and system-level indexes. According to the method, an X-ray tube source parameter library is established to synthesize a real source spectrum containing a continuous spectrum and a characteristic line, an optimal design scheme is automatically searched in a multi-parameter space through a normalized weighted scoring system, and finally a simulated full spectrum is generated and system-level performance indexes are evaluated through an end-to-end'source-monochromatization-sample-detector 'forward modeling link. The problems that in a traditional design method, parameter coupling is complex, and model prediction deviation is large are solved, collaborative optimization of energy resolution, flux and purity is achieved, and technical support is provided for developing a high-performance XRF spectrograph.

The utility model discloses an imaging spectrometer monochromator convenient to install and adjust, which relates to the technical field of optical instruments and comprises a fixed bottom plate, and an entrance slit group, a collimation imaging light path group, a grating group, a focusing imaging light path group and a detector assembly which are fixed on the fixed bottom plate and are sequentially distributed on a light path, the entrance slit group is connected to the fixed bottom plate through the slit adjusting plate; the collimation imaging light path group and the focusing imaging light path group are arranged on the fixed bottom plate through the support adjusting assembly; the grating group is connected to the fixed bottom plate through a grating adjusting plate; and each component can be finely adjusted. The assembling and adjusting operation is simpler, more convenient and faster, and the consistency, the reliability and the production efficiency are improved.

The invention relates to the technical field of in-situ photoelectric characterization systems, and provides an in-situ photoelectric characterization system.The in-situ photoelectric characterization system comprises a sample table, a light path structure, a light source assembly, a light source analysis assembly and a source meter device, light is projected to the light path structure through the light source assembly, so that the source meter device can record and form an electrical characteristic curve; meanwhile, at least one of a near-infrared spectrometer, a visible spectrometer, a single-photon counter, a monochromator coupled with a near-infrared photomultiplier and a monochromator coupled with a visible photomultiplier in the light source analysis assembly can analyze and detect the product, so that the detection operation can be effectively optimized, and the detection efficiency is improved.

This invention relates to a method for assembling and adjusting a holographic concave grating monochromator, belonging to the field of optical instrument assembly and adjustment technology. It solves the problems of existing monochromator assembly and adjustment methods being cumbersome, time-consuming, labor-intensive, or having high theoretical requirements and low efficiency. The method involves leveling the holographic concave grating monochromator and laser; recording the initial spot height of the laser; directing the laser perpendicularly to the entrance slit of the monochromator to the center of the grating; measuring and recording the heights of the 0th and ±1st order diffraction spots; plotting the trajectories of the multi-order spectral spots; adjusting the pitch and / or tilt angle of the grating according to the trajectory until the center of each diffraction spot is collinear with the initial spot height; rotating the grating to allow the 0th order light to exit from the exit slit; using a right-angle fixture to adjust the grating shaft lever to be perpendicular to the drive screw and locking it; placing an external light source at the entrance slit; observing the clarity of the spectral lines at the exit slit using a microscope; and adjusting the thickness of the shim at the exit slit to achieve precise conjugate matching between the entrance and exit slits. This invention is simple to operate, quick to assemble and adjust, and highly accurate.

This invention discloses a two-dimensional infrared spectroscopy system and its detection method that combines acid-base step and pulsed heating. The system includes a femtosecond laser, an optical parametric amplifier and difference frequency generator, a frequency divider, an electronic time delay generator, a nanosecond laser, a detachable optical parametric oscillator providing 355nm light pulses, an optical parametric oscillator providing 2020nm light pulses, a monochromator and a mercury cadmium telluride array detector, an integrator and data acquisition card, a computer, a chopper, a time-resolved pulse generation chamber, and a sample chamber. This invention retains the original pulsed heating trigger mode by using a nanosecond light source with a detachable optical parametric oscillator providing 355nm light pulses. It achieves convenient switching between the acid-base step and pulsed heating modes through a dichroic mirror and a reversible reflector. Before and after switching, the propagation direction of the nanosecond pulses is completely consistent, and the relative time delay is corrected by the electronic time delay device.

The utility model discloses a manual ultraviolet monochromator assembly, which relates to the field of monochromators, and comprises a monochromator shell, the manual monochromator assembly used for adjusting monochromatic light is arranged behind the monochromator shell, the manual monochromator assembly comprises a manual wavelength knob, the top of the monochromator shell is fixedly connected with a lamp chamber shell, and the lamp chamber shell is fixedly connected with a light source. An automatic light searching assembly used for automatically searching light is arranged on the front face of the top of the lamp chamber shell. The automatic light searching assembly comprises a reflector motor body. A deuterium lamp holder is fixedly installed on the front face of the lamp chamber shell, and a deuterium lamp body is fixedly connected to the position, located in the monochromator shell, of the rear face of the deuterium lamp holder. By arranging the deuterium lamp body, the tungsten lamp body and the reflector motor body, automatic light searching and automatic light source switching of the ultraviolet monochromator can be achieved, the sun shield is arranged, unnecessary light can be shielded, the manual wavelength knob and the filter disc motor body are arranged, and wavelength can be manually and flexibly selected and accurately controlled.

An X-ray scattering measurement device includes a collimating monochromator, a monitoring and adjustment system, an X-ray source, and a monitoring detector. The collimating monochromator receives X-rays emitted from the X-ray source and outputs a main X-ray beam and peripheral X-ray beams. The monitoring detector detects the peripheral X-ray beams to obtain their intensity information. The monitoring and adjustment system processes the intensity information to obtain X-ray intensity monitoring data and monitors the X-ray source based on this data. By using the unused peripheral X-ray beams in the measurement optical path as the monitoring target, real-time monitoring of the X-ray source can be achieved without interrupting the measurement process, without any loss of the measurement beam flux. Simultaneously, by judging the state of the X-ray source based on the real-time monitoring results, appropriate adjustment measures can be taken in a timely manner, and anomalies in the measurement results can be located immediately. This facilitates the automated analysis and processing of abnormal measurement results and improves the efficiency of root cause analysis of abnormal measurements.

Cell parameters of the crystal compound are as follows: diffraction data are collected in an omega-theta scanning mode by using MoK alpha rays monochromatized by a graphite monochromator on an Oxford X-ray single crystal diffractometer at the temperature of 273 k, and the crystal compound is characterized in that the crystal belongs to a triclinic system, P-1; the cell parameters are as follows: alpha is equal to 79.857 (3) degrees; beta is equal to 87.082 (3) degrees; gamma is equal to 87.829 (3) degrees; the synthesis method of the crystal chlorine compound (I) comprises the following steps: weighing 0.02 35 g of benzophenone hydrazone and 0.6720 g of 1.0 g of 7-chloroisatin and acetic acid ketone monohydrate complex, putting into a 150mL flask, adding 100.0 mL of chlorobenzene as a solvent, stirring at room temperature for 48 hours, carrying out column chromatography separation, eluting with petroleum ether / dichloromethane (1 / 1), and carrying out vacuum drying to obtain the crystal chlorine compound (I). And naturally volatilizing the collected front component points to obtain the target crystal compound I, namely the 6-bromo-3-diphenylmethylene indoline-2-ketone crystal. The application of the crystal chlorine compound (I) is that the crystal chlorine compound (I) has a relatively strong inhibition effect on epidermophyton flocculent, and the IC50 value of the crystal chlorine compound (I) is 0.063 + / -0.008.

Exemplary diagnostic systems and methods involve delivering multispectral light to a tissue of a patient, detecting light from the tissue, and analyzing the tissue based on the detected light. Light delivery can be achieved using a multi-dispersion element monochromator apparatus that includes a broad spectrum light source, a rotating body, and multiple dispersion elements in operative association with the rotating body.

A method of operating an electronic device that is configured to support manufacturing a semiconductor device includes (i) selecting a height of a stage of the electronic device that is configured to hold the semiconductor device, (ii) generating white light by using a light source of the electronic device, (iii) generating light of a selected wavelength by filtering the white light using a monochromater of the electronic device, (iv) emitting the light of the selected wavelength to the semiconductor device using a beam splitter of the electronic device, and (v) capturing reflection light reflected from the semiconductor device using a camera of the electronic device.

The invention relates to the technical field of optical measurement, and provides a large-aperture optical lens spectrum transmittance two-dimensional distribution test device and method, and the device comprises a light source module, and a monochromator module, a light beam modulation module, a test sample table and a detection module which are sequentially arranged along the light beam output direction of the light source module; the test sample table is a two-dimensional adjusting table, is used for arranging a tested optical lens, comprises a vertical optical axis direction horizontal translation device and an optical axis direction rotating device, and realizes two-dimensional position adjustment when the tested optical lens is measured; the detection module comprises a two-dimensional displacement table and a detector arranged on the two-dimensional displacement table, and the two-dimensional displacement table comprises a first translation device translating back and forth in the optical axis direction and a second translation device translating horizontally in the direction perpendicular to the optical axis. According to the invention, the positioning of the lens on a two-dimensional plane can be accurately controlled, and the test of the spectrum transmittance of different areas of the optical lens is realized.

The application provides a damping base for an optical device and a testing method thereof, relates to a damping base for an optical device and a testing method of damping effect of the damping base, and aims at solving the problems of poor structure bearing capacity, poor stability and influence on operation and use of a device of a support base for supporting a monochromator. The application comprises a platform assembly, a support assembly, a connecting assembly and an adjusting assembly; the damping base is provided with a double-layer platform composed of a first platform and a second platform, leveling supports arranged between the first platform and the second platform, and damping pads, damping shims, lifting rings and other components. The damping base has the advantages of high stability and good damping effect. The testing method of the high-stability damping base for supporting a monochromator provided by the application comprises the following steps in sequence: assembling the damping base, adjusting the levelness of the upper surface of the second platform and testing the damping effect. The method has the advantage of simple operation.

The utility model discloses a liquid phase ultraviolet visible light detector, belongs to the technical field of liquid chromatography equipment, the liquid phase ultraviolet visible light detector comprises a case, a light source assembly, a thermal insulation layer and a monochromator assembly, the light source assembly is installed in the case, the monochromator assembly is installed at the opening of the side face of the light source assembly, and the thermal insulation layer is installed on the monochromator assembly. According to the utility model, by arranging the positions of the deuterium lamp and the tungsten lamp in the light source assembly, the orientation of the tail parts of the deuterium lamp and the tungsten lamp can be limited, the follow-up direction synchronization of the flow cell in the monochromator assembly is matched, and an operator opens the front door of the case, so that the deuterium lamp and the tungsten lamp can be conveniently operated. The tungsten lamp, the deuterium lamp and the flow cell can be clearly and visually observed, subsequent rapid replacement and maintenance are facilitated, the whole part shell does not need to be disassembled, the influence of the external temperature on equipment operation can be stably reduced in cooperation with a heat preservation layer, a temperature control fan and an air duct, and the overall accuracy of the equipment is improved.

The invention provides a real-time on-line tetracycline monitoring device and method.The device comprises a box body, a rotary drum, a driving mechanism, a supporting plate, a monochromator, a quantitative liquid inlet mechanism and a main control unit, a reaction cylinder is arranged in the box body, a transparent window is arranged on the side face of the reaction cylinder, the top and the bottom of the reaction cylinder are connected with a sample inlet pipe and a drain valve respectively, and a liquid pump is arranged on the sample inlet pipe; a working electrode and a counter electrode are arranged in the reaction cylinder, the rotating cylinder rotatably sleeves the outer side of the reaction cylinder, light holes are uniformly distributed in the side surface of the rotating cylinder around the axis of the rotating cylinder, the driving mechanism is in driving connection with the rotating cylinder, the monochromator is located on one side of the rotating cylinder, and the quantitative liquid inlet mechanism is arranged on the top surface of the box body and is communicated with the reaction cylinder; the main control unit comprises an extended gate transistor, a current signal acquisition unit, an analysis unit and a storage unit; and a gate of the extended gate transistor is electrically connected with the working electrode. The monochromator and the expanded gate field effect transistor are arranged, and the online monitoring function of the concentration of the tetracycline solution is achieved by analyzing photoelectric fingerprint data of solutions with different concentrations.

The application relates to the technical field of spectral calibration, in particular to a spectral calibration method and device of a single-lens imaging spectral system. Step 100: according to the focal length of the single lens, the distance between the single lens and the detector is adjusted, the monochromator is controlled to be turned on, and the wavelength is initialized; step 102: the two-dimensional displacement platform is controlled to move according to a preset distance, so as to record each acquisition position of the detector and the corresponding number; step 104: the gray-scale map data collected by the detector is fitted, so that the maximum value position of the spectral line and the corresponding number are obtained; step 106: the initialized wavelength is adjusted according to a preset increment; step 108: steps 100 to 106 are circularly executed, so that the position number of the maximum value of the spectral line under different wavelength conditions is obtained; and step 110: the spectral calibration position is determined based on the position number of the maximum value of the spectral line under different wavelength conditions. In this way, the calibration of the spectral center wavelength can be accurately and efficiently completed.

The invention relates to a multi-source disturbance self-calibration method and system for a rotary filtering type monochromator, and belongs to the technical field of optical instrument filtering calibration. The method comprises the following steps: converting a multi-source disturbance signal response characteristic into a disturbance energy spectrum basis vector, and extracting spectrum bandwidth distribution to obtain a spectrum self-disturbance calibration parameter; luminous flux preposition constraint is carried out, the convergence state of a real-time spectrum observation value under the disturbance change condition is detected, confidence coefficient calibration is carried out on the disturbance contribution weight on which the self-calibration operation depends, and a filtering disturbance compensation control strategy is generated; constructing a filtering performance evolution model, identifying spectral wavelength shift and resolution data after disturbance self-calibration, verifying the filtering degradation period of the monochromator, and outputting a filtering calibration feedback report; and setting a critical interference stable threshold, establishing a filtering virtual regulation and control mechanism, enhancing the compensation calibration weight of a filtering disturbance compensation control strategy, and generating a filtering disturbance self-calibration scheme.

The invention provides a double-grating monochromator, a double-grating monochromatization method, a double-grating monochromatization device, a medium and equipment, a first optical system comprises a first plane line-distance-variable grating and an incident plane mirror, a monochromatic light slit is arranged at the image plane position of the first optical system, a second optical system comprises an emergent plane mirror and a second plane line-distance-variable grating, and a monochromatic light slit is arranged at the image plane position of the second optical system. The second plane variable-line-distance grating and the first plane variable-line-distance grating are matched in parameter and are symmetrically arranged, so that the forward inclination of the pulse introduced by the first plane variable-line-distance grating is counteracted by the opposite dispersion effect generated by the second plane variable-line-distance grating; wherein the incident plane mirror and the emergent plane mirror respectively adjust the angle of an incident light beam at a fixed spatial distance in an off-axis rotation mode, and the angle adjustment and the scanning angle of the corresponding grating are cooperatively changed so as to maintain a constant grating equation relationship. And the output pulse width is remarkably compressed, and collaborative optimization of high energy resolution and optimal pulse output is realized.

A blood glucose level measuring apparatus includes: a light source configured to irradiate light to a subject; a monochromatic section configured to separate wavelength components of light reflected and scattered from an object; a light receiver configured to receive light transmitted through the monochromator portion and generate an electrical signal based on the received light; and a processor configured to extract information of a blood glucose level of the subject based on a frequency shift of the light due to the Raman effect.

The invention discloses a spectrum calibration method, device, equipment and system for a monochromator, and the method comprises the steps: controlling a first diaphragm and a second diaphragm to move reversely on a focal plane of a first-stage light path along a first direction perpendicular to an optical axis until a first distance exists between the first diaphragm and the second diaphragm; the first diaphragm and the second diaphragm are controlled to be kept relatively static, the whole diaphragm moves in the first direction, and meanwhile first spectral information in the moving process is collected; determining a reference spectrum according to the first spectrum information; the first diaphragm and the second diaphragm are controlled to be kept relatively static at different preset intervals in sequence, the whole diaphragm moves in the first direction, and meanwhile second spectral information in the moving process is collected; and according to the comparison result of the second spectrum information and the reference spectrum, determining the corresponding relationship between the positions of the first diaphragm and the second diaphragm and the wavelength and the bandwidth. An additional calibration light source and any hardware operation are not needed, the monochromator can work in a closed environment for a long time, and high-precision automatic calibration can be achieved.

Apparatus for examining a liquid or powdered sample (140) by means of ultrasmall angle X-ray scattering, comprising: a beam shaping device (120) comprising an elliptical mirror (120), a monochromator (130), an analyzer (150), and a detector (160) for X-ray radiation, wherein the monochromator (130) is arranged between the beam shaping device (120) and the analyzer (150) and wherein the beam shaping device (120) is configured to focus an X-ray beam (115) in front of the monochromator (130); wherein the liquid or powdered sample (140) is arranged between the monochromator (130) and the analyzer (150), wherein a focus of the elliptical mirror (120) is directed towards the monochromator (130).