528 results about "Focal surface" patented technology

The invention discloses a high-power microscope intelligent scanning method for a bone marrow smear, which comprises the following steps: S1, automatically dividing a scanning area: acquiring a bone marrow smear image by adopting a front camera, and selecting an optimal scanning area through a multi-dimensional quality evaluation model; s2, intelligent partitioning and focusing point distribution: dividing an optimal scanning area into N * M sub-areas, determining P focusing sampling points by adopting a layered sampling strategy, and establishing a three-dimensional coordinate mapping table; s3, multi-point focusing data acquisition: according to a preset coordinate mapping table, driving an objective table and an objective lens assembly to move to each sampling point in sequence, and constructing an N * M * P-dimensional focusing data matrix; s4, performing focal plane fitting by a least square method: performing three-dimensional plane fitting on the acquired data; and S5, intelligent scanning imaging: calculating the theoretical optimal focal length of each position in the scanning path according to the fitting function, and driving the objective lens assembly to adjust the focal length in real time for scanning imaging. According to the invention, the scanning area identification accuracy and the image definition uniformity are automatically improved in the whole process.

The invention relates to the technical field of three-dimensional workpiece visual inspection, and provides a multi-focal-plane image fusion method and system for three-dimensional workpiece detection, and the method comprises the following steps: collecting image data; preprocessing the image data; smoothing a gray histogram of the preprocessed image, and accurately extracting a minimum value point as a multi-threshold segmentation parameter; generating a plurality of image segmentation regions; removing small false targets and noise points, and performing secondary screening in combination with area, shape and edge features; performing smooth optimization on the boundary, and eliminating irregularity of the boundary; carrying out tagging and spatial indexing processing on the optimized image segmentation region; performing image definition evaluation, and determining a target focal plane; extracting the clearest image of each image segmentation area; and fusing the clearest images. Through the scheme of the invention, the detection efficiency is improved, and the problem of low efficiency caused by repeated manual focusing and adjustment of a camera on focal planes with different heights of a three-dimensional workpiece is solved.

The invention discloses an optical imaging and coding hole technology fused optical imaging system and method, and aims to integrate scattered polarization components in a reflected light signal into coding light field data with clear layers by constructing a polarization coding modulation system, so as to highlight a coupling relationship among optical elements. A refocusing sequence and a focal plane chromatography technology are adopted, spatial geometric information and light intensity distribution characteristics of different depth layers are fully excavated, and a three-dimensional distribution rule of surface topography is disclosed; wavefront correction and deformable mirror control technologies are introduced, imaging parameters of an optical system are adjusted in a self-adaptive mode, and the application range of measurement precision is expanded; light intensity modulation analysis and phase unwrapping window processing are combined, the change trend of the surface curvature is depicted, and key feature points of morphology measurement are grasped; finally, multi-dimensional and multi-level optical measurement information is fused, three-dimensional measurement output with rich content and reliable precision is formed, and comprehensive and high-quality measurement technology resources can be provided for application scenes such as precision optical detection and surface quality evaluation.

The invention is suitable for the field of imaging, and discloses a micro lens array zoom module zoom method and an imaging system, and the method comprises the steps: obtaining a mapping relation table between a deviation objective lens working distance and a micro lens array state of a micro lens array zoom module; acquiring a laser spot image formed by irradiating the to-be-measured object with laser, and calculating the position of the to-be-measured object to the focal plane of the objective lens; determining an adjustment reference distance of the micro-lens array zoom module based on the position from the object to be measured to the focal plane of the objective lens, and comparing the adjustment reference distance with the mapping relation table to determine the micro-lens array state of the micro-lens array zoom module; and on the basis of the determined state of the microlens array, a focusing instruction is generated so as to realize automatic zooming of the microlens array zooming module, automatic zooming of the microlens array zooming module is realized, and the method has the advantages of extremely high focusing speed and high precision.

The invention discloses a four-channel fluorescence detection light path module of a super-resolution biological microscope, which divides a fluorescence signal of an intermediate image plane (5) into four conjugate channels (7a-7d) through multi-stage dichroscope light splitting, reflector guiding and lens focal plane adjustment on the premise of not introducing additional aberration, and realizes real-time synchronous detection by using a single large-target-surface camera (8). By adjusting the distance between the reflectors, the inclination angle of the parallel plate glass or the position of the lens, the device can adapt to different camera target surface sizes and compensate chromatic aberration, and the problems of motor switching delay and dual-channel aberration in the prior art are solved.

The invention discloses a far-field light field simulation test system for a laser communication terminal. The far-field light field simulation test system comprises a primary mirror assembly, a secondary mirror assembly, a turning mirror assembly, a rod assembly, a focal plane assembly and a frame, the focal plane assembly is composed of a reflector, a spectroscope, a transmitting optical fiber, a receiving optical fiber, a light beam quality analyzer and a coated dichroic mirror. The far-field simulation test system is an off-axis reflection type optical system developed based on the geometrical optics theory. The test system is a core component applied to ground demonstration and verification of space laser communication, serves as a collimator for optical system installation and calibration of a terminal on one hand, provides a complete machine test platform for the space laser communication terminal on the other hand, can serve as a transmitting end to provide a parallel light source and can also serve as a receiving end, and the space laser communication terminal is convenient to use. The detected laser communication terminal is detected, and optical parameters of light beam quality and transmission efficiency of the detected laser communication terminal are effectively evaluated.

The invention relates to a servo-mechanism-free defocusing amount automatic compensation control system for an aerial camera, and belongs to the technical field of photoelectric instruments. According to different influences of the height, temperature and air pressure of a camera on an imaging focal plane, a temperature balance point is controlled through data calibration and temperature adjustment, the temperature balance point is slightly higher than a temperature point changing along with the height, and therefore automatic compensation of the comprehensive defocusing amount caused by the height, temperature and air pressure factors is completed. The system does not need any servo mechanism, only needs software to control the working temperature and keep the temperature balance point, can realize automatic focusing of the imaging focal plane along with the application environment, can adapt to different environmental conditions and different flight heights, and is good in thermodynamic property.

The invention discloses a transmission-type ultra-wideband multi-focal-plane optical system which comprises a first positive lens, a first negative lens, a second positive lens, a second negative lens and a third negative lens which are sequentially arranged along the same optical axis. Incident light of different wave bands sequentially passes through the first positive lens, the first negative lens, the second positive lens, the second negative lens and the third negative lens, differential focusing is formed by setting different back intercept, and a visible light wave band, a near-infrared wave band, a medium-wave infrared wave band and a long-wave infrared wave band respectively form independent focal planes which are axially separated. The transmission wave band of the optical system is 0.5-12 microns, visible light, near-infrared light, medium-wave infrared light and long-wave infrared light are covered, the common optical element and axial separation multi-focal plane design is adopted, different wave bands share the same set of optical elements, and the target can be detected only by placing the target on the corresponding focal plane. And optical collimation of different wavebands can be realized by changing the position of the focal plane.

The invention relates to a micro display device for a bifocal plane HUD (head up display) system, which solves the problems of halved field of view, limited working bandwidth, low color saturation and low brightness of the existing bifocal plane HUD system, and comprises an image display module and a polarization modulation element arranged above the image display module, the polarization modulation element is used for polarization modulation of display pixels, the effective area of the sub-wavelength medium grating arrangement is equivalent to a 1 / 2 wave plate, the display pixels are separated in a row-by-row or column-by-column staggered mode through the sub-wavelength medium grating arrangement, and the problem that the view field is halved due to an existing target surface space partitioning scheme is solved. The two adjacent sub-wavelength medium gratings convert incident light into linear polarization states in two directions, the two directions are mutually orthogonal, and the two spaced sub-wavelength medium gratings are completely the same, so that the two images are respectively adjusted into the mutually orthogonal linear polarization states, and the two images are generated in a staggered manner.

The invention relates to the technical field of laser shaping, in particular to a light spot shaping method and system based on a spatial light modulator, and the method comprises the steps: providing and expanding an incident laser beam in Gaussian distribution, and obtaining a collimated and expanded beam; irradiating an incident laser beam to a spatial light modulator, loading a preset phase modulation pattern to modulate a wavefront phase, and outputting a phase modulation beam; the phase modulation light beam is input into a 4f imaging system, a spatial light modulator is located on the front focal plane of a first lens, and the light beam forms a light field with target intensity distribution on the rear focal plane of a second lens after passing through the system; and the light field is focused on the surface of a workpiece to be processed through an objective lens to form a flat-topped light spot. According to the scheme, uniform light intensity distribution can be flexibly generated without replacing optical elements, the uniformity and utilization efficiency of laser energy in a machining area are remarkably improved, and the problem of material damage or insufficient edge machining caused by too strong center energy is effectively solved.

The invention relates to the technical field of camera imaging, and particularly discloses a hyperspectral camera semi-automatic focal plane adjustment method based on PI control. In order to solve the problem that the pose relationship between a sensor and a focal plane has great influence on performance indexes during the adjustment of the hyperspectral camera, the method proposes to realize semi-automatic adjustment by using PI control software. By controlling imaging of the hyperspectral camera, displaying light and shadow on a software interface in real time, calculating indexes such as MTF and signal-to-noise ratio and combining feedback adjustment of a PI control algorithm, the optimal pose relation between the focal plane and the detector is rapidly and accurately obtained. According to the method, the installation and adjustment efficiency and precision are improved, the installation and adjustment period is shortened, the dependence on the experience of installation and adjustment personnel is reduced, and standardized focal plane installation and adjustment of the hyperspectral camera are realized. Reliable image support is provided for subsequent hyperspectral application, an effective solution thought is provided for similar engineering requirements, and the method has wide application prospects and value.

The invention belongs to the field of optical systems, and particularly relates to an entrance pupil front refrigeration type free-form surface off-axis four-mirror optical system. The optical system comprises a first reflecting mirror, a second reflecting mirror, a third reflecting mirror, a fourth reflecting mirror, a detector window and a detector cold diaphragm which are sequentially arranged from an object plane to a focal plane, wherein the first reflecting mirror is arranged at a position close to the object plane; the second reflecting mirror is arranged on a reflecting light path of the first reflecting mirror; the third reflecting mirror is arranged on a reflecting light path of the second reflecting mirror; the fourth reflecting mirror is arranged on a reflecting light path of the third reflecting mirror; and a detector window and a detector cold diaphragm are sequentially arranged on a reflection light path of the fourth reflector. According to the invention, the modular design of the reflective off-axis optical system can be realized, and the integration level and interchangeability of the photoelectric system are improved; and the relative aperture is larger, so that the detection sensitivity of the optical system is further improved while the optical path structure is kept compact.

The invention discloses an aspheric keratoprosthesis lens column, a keratoprosthesis and an application method of the aspheric keratoprosthesis lens column, the whole lens column is cylindrical, the front surface of the lens column is a convex surface, the rear surface of the lens column is a concave surface, the rear surface of the lens column is a surface close to the retina, the front surface of the lens column is a surface far away from the retina, and the front surface and the rear surface of the lens column are both curved surfaces. And the spherical surfaces are rotationally symmetrical aspheric surfaces. The artificial cornea comprises a lens column and a support, and the lens column is installed on the support. The fixed position of the lens column is that the distance between the vertex of the rear surface of the lens column and the retina is 10-120mm, the focal plane is perpendicular to the optical axis, and the inclination angle of the focal plane is 0 degree. According to the lens column, spherical aberration and coma can be effectively corrected, and the imaging quality is improved; light scattering is reduced, the visual contrast at night and in a low-light environment is improved, and the visual experience of a patient is improved; the deviation tolerance of the implantation position is higher, and the operation difficulty and the risk of postoperative complications are reduced.

The invention discloses a detector multiplexing device of a large-breadth and high-resolution space remote sensing camera, which comprises a front optical system and a primary image plane, and is characterized in that the front optical system is used for converging a target and imaging the target on the primary image plane; the image segmentation device is a group of spherical reflectors and is used for segmenting primary imaging of a target to form a plurality of different sub-images; the segmented sub-images are transmitted to the focusing mirror, and the light passing through the focusing mirror is converged to the area array detector in a new array form. The system has the advantages of modularization, light weight, suitability for broadband detection from visible light to infrared light and the like, a primary image plane of the front optical system is segmented through the image splitter and is subjected to secondary imaging through the focusing mirror, conversion from linear array imaging to area array imaging is realized, and the detection precision is improved. Therefore, the problem of huge focal plane scale caused by a large-breadth and high-resolution space remote sensing camera in the linear array push-broom process can be effectively avoided.

The present invention discloses a transparent flat plate two-dimensional thickness measurement system and method based on line spectrum confocal technology. The light emitted by a wide spectrum linear array LED light source is transmitted to a slit through an optical fiber bundle, and then dispersed on the confocal plane through a symmetrical confocal linear dispersion mirror group. The linear light spot focused on the surface of the transparent flat plate will be reflected back and split by a line imaging spectrometer. The spectrum-distance mapping relationship is decoded by a microprocessor to obtain the thickness measurement result on the confocal line. With the help of a two-dimensional precision translation stage, the two-dimensional surface thickness measurement of a large area transparent flat plate can be achieved. This method breaks through the problems existing in the traditional spectral confocal sensor for thickness measurement and single-point thickness measurement, and has the advantages of simple measuring device, easy operation, easy integration in an automated production line, and high efficiency in two-dimensional surface thickness measurement.

The present invention discloses a photoacoustic microscopy imaging system based on a high-speed focuser. The photoacoustic microscopy imaging system includes a light source component, a single-mode fiber coupling component, a high-speed focuser component, a light beam scanning component, a reflective bracket, a signal acquisition component and a computer. The present invention adopts a mobile focusing design. During the photoacoustic imaging point scanning process, the displacement of the double-cemented lens is controlled by the movement of a fast linear motor, and then the focal position of the light beam is adjusted, so that during the scanning process, the focal plane at any position always coincides with the imaging surface. The present invention establishes an imaging method for automatically adjusting the focal plane by adopting a high-speed focuser, which effectively improves the image signal-to-noise ratio and resolution, and is low in price and easy to operate. The present invention adjusts the imaging in real time according to the photoacoustic signal fed back during the scanning process, and can perform photoacoustic microscopy imaging of any unknown surface, which has broad research prospects and application value.

The invention relates to an overlay measurement system and a measurement method, and belongs to the technical field of chip manufacturing. Interference scanning focus measurement and independent focusing imaging of double industrial cameras are combined, an overlay measurement system accurately positions focal planes of different photoetching layers on a wafer by using interference signals through one-time vertical scanning, and then the two cameras are driven to be synchronized to image plane positions of the respective focal planes, so that the alignment precision of the wafer is improved. Therefore, one-time and synchronous high-definition imaging and overlay error calculation of two layers of patterns exceeding the optical focal depth are realized, and the measurement efficiency is remarkably improved.

The invention relates to the technical field of optical imaging, and discloses a novel reflective dark field imaging method and system based on Fourier conjugate plane modulation, and the method comprises the steps: controlling a first spatial light modulator to load a dynamic annular illumination pattern, and projecting the dynamic annular illumination pattern to a rear focal plane of an objective lens; light field distribution formed by scattering signal light and annular reflected light is separated on a rear focal plane by using an objective lens; relaying the light field distribution to a conjugate plane where a second spatial light modulator is located through a second relay light path; and controlling the second spatial light modulator to load a dynamic blocking pattern, blocking the annular reflected light and enabling the scattered signal light to pass through, and finally imaging. According to the invention, two electronically synchronous spatial light modulators are adopted to construct a dynamic illumination light field and realize adaptive spatial filtering respectively, so that cooperative matching of an illumination pattern and a blocking pattern is realized, active compensation of optical chromatic aberration is facilitated, the problem of background leakage under wide-spectrum illumination is solved, and the illumination quality is improved. And a high-numerical aperture objective lens lacking a dark field channel is compatible.

The invention discloses a bifocal plane imaging system and a multidirectional beam splitter, and the bifocal plane imaging system comprises an illumination module which is configured to provide an illumination light beam for a to-be-measured piece, and the illumination light beam forms a signal light beam on the surface of the to-be-measured piece; the objective lens assembly is configured to receive the signal light beam and optically focus on the second to-be-measured layer; the light splitting assembly is arranged on an emergent light path of the objective lens assembly and is configured to split the signal light beam to form a first light beam transmitted in a first direction and a second light beam transmitted in a second direction; the first imaging module is configured to receive the first light beam in a first direction and optically focus the first light beam on a first to-be-measured layer through focusing processing, and the first light beam is used for imaging the first to-be-measured layer; and the second imaging module is configured to receive a second light beam in a second direction, and the second light beam is used for imaging a second layer to be measured. According to the invention, the detection efficiency of the two to-be-detected layers can be improved.

The invention relates to a double telecentric projection photoetching lens which is applied to an ultraviolet broadband and comprises a front lens group, a diaphragm and a rear lens group which are sequentially arranged from an object side to an image side, and the front lens group comprises six lenses which are sequentially arranged from the object side to the image side; the rear lens group comprises a seventh lens, an eighth lens and a twelfth lens which are sequentially arranged from the object space to the image space, the seventh lens is a negative lens, the eighth lens and the twelfth lens are positive lenses, and at least one meniscus positive lens and a biconcave negative lens are arranged between the eighth lens and the twelfth lens. According to the double-telecentric projection photoetching lens provided by the invention, the achromatic problem and the difficult problem of difficulty in processing and assembling of the existing ultraviolet broadband photoetching lens are solved, and the full-waveband high transmittance and the double-telecentric characteristic of the lens are ensured; when the lens is used under a high-power laser light source, the focal plane offset is guaranteed to be in the micron order, the diameter of the lens cone can guarantee high-efficiency printing of the whole machine, and the lens can be suitable for production of various kinds of ink for PCB clients.

The invention discloses an arbitrary-curved-surface wide-field-of-view turntable confocal tomography microimaging system and method, and belongs to the technical field of optical microimaging, the system comprises an illumination light source and a detection module, and the light output side of the illumination light source is provided with an illumination adaptive modulation module; a first relay lens module is arranged on the light output side of the lighting module; the light output side of the first relay lens module is provided with a zoom pinhole turntable; a second relay lens module is arranged between the zoom pinhole turntable and the sample; a dichroscope is arranged between the zoom pinhole turntable and the first relay lens module; a third relay lens module is arranged between the dichroscope and the detection module; the illumination adaptive modulation module generates a dynamic illumination template according to pre-stored curved surface morphology data; matching the illumination area to the current focal plane imaging area through the first relay lens module and the second relay lens module; and the signal synchronous processing system controls zoom compensation working parameters of the illumination adaptive modulation module, the detection module and the zoom pinhole turntable.

The invention provides a virtual reality display method and system, a computer and a storage medium. The method comprises the following steps: collecting sight movement data and head movement data of a user; predicting a fixation point area at the next moment based on the historical movement track of the fixation point area; according to the scene depth information, the sight line moving speed and the head motion data of the fixation point area at the next moment, predicting the predicted focal plane depth at the next moment, and dynamically adjusting the configuration of the micro-lens array in the optical assembly to match the predicted focal plane depth. The depth of a focal plane is predicted through fusion data of eye movement tracking and an inertial measurement unit, the configuration of a micro-lens array is dynamically adjusted, meanwhile, a display picture is divided into a fixation point area, a fuzzy display area and an atmosphere rendering area, and based on differentiation rendering processing, the convergence adjustment conflicts of vision are remarkably relieved, the graphic calculation load is reduced, and the display quality is improved. And a self-adaptive high-definition display effect is realized.

According to the display device and the vehicle, a phase modulation element is arranged on the light emitting side of an image source, a light splitting element is arranged on the light emitting side of the phase modulation element, and the phase modulation element converts first polarized light emitted by the image source into second polarized light to be emitted in the first stage and transmits the first polarized light in the second stage; the light splitting element reflects one of the first polarized light and the second polarized light emitted by the phase modulation element and transmits the other one, so that through the cooperation of the phase modulation element and the light splitting element, the emergent light of the image source can be transmitted to the projection imaging medium through different light paths to generate a bifocal plane image; and the image source does not need to be partitioned, so that the resolution ratio of the generated front and back image planes positioned on different focal planes is not reduced, and the problem that the resolution ratio is reduced in the existing multi-focal-plane AR-HUD display scheme adopting the single PGU and the double optical paths is solved.

The invention relates to an automatic focusing method and device and computer equipment. The method is applied to a microscope, and comprises the following steps: in response to an automatic focusing instruction, controlling an objective lens to move according to a first stepping value corresponding to an imaging parameter of the microscope, and acquiring at least two first reference images at different positions of the objective lens; determining a first objective lens position according to an objective lens position and ambiguity features corresponding to the first reference image; controlling the objective lens to move according to the first objective lens position and a preset second stepping value, and acquiring at least two second reference images at different objective lens positions; and according to the objective lens position and the definition characteristic corresponding to the second reference image, determining a target focal plane position and completing focusing. By adopting the method, the focusing efficiency can be improved and the calculated amount can be reduced on the premise of ensuring the focusing accuracy.

The present application discloses a method, system and device for intelligent automatic focusing of a microscope, which relates to the field of microscope focusing. The method includes: performing target detection on a set of scanned images by using an adaptive search algorithm to obtain a detection result; if there is a target sample in the set of scanned images, extracting multiple frames of scanned images based on the existing position area, and calculating the clarity score value of each frame of scanned image extracted based on multiple image features; selecting the scanned image with the highest clarity score value, and marking the corresponding focal plane as the final focal plane of the path point; using the adaptive search algorithm to determine the next path point, and then returning to the step of obtaining the set of scanned images; if the result indicates that there is no target sample in the set of scanned images, using the adaptive search algorithm to determine the next path point, and then returning to the step of obtaining the set of scanned images. The present application can improve the efficiency, accuracy and adaptability of microscope automatic focusing.

The invention provides a corneal curvature measurement system and a corneal curvature measurement device, relates to the technical field of eye imaging and measurement, can reduce the debugging difficulty of a corneal curvature measurement light source, and does not limit the imaging view of other light paths in the same system or device. The corneal curvature measuring system comprises an eyepiece set, a light source module, a camera module and a diaphragm, the light source module, the camera module and the diaphragm are located on the inner side of the eyepiece set, the light source module comprises a point light source array, the point light source array emits light or forms an image on a focal plane on the inner side of the eyepiece set, and multiple collimated light beams are emitted through the eyepiece set and enter a measured eyeball. A plurality of collimated light beams fall on the circumference of the cornea on the same latitude, a cornea light spot virtual image is formed after the collimated light beams are reflected by the cornea, then a real image is formed on the detection surface of the camera through the eyepiece group and the camera module, and the cornea curvature is measured according to the position information of the cornea light spot in the real image.

The present invention discloses a method for designing an optical system that produces uniform annular light, and belongs to the field of optical design. Technical solution: The optical system involved is formed by a combination of a conical mirror and a cylindrical mirror. A beam of circular parallel light is incident on the conical mirror, and the light emitted from the conical mirror is reflected on the cylindrical mirror. The concave and convex areas on the cylindrical mirror divide the light beam, and then are stacked and converged at the focal plane at the same time to form a focused annular light of a certain width. The conical mirror is formed by a cone line rotating around the optical axis Z; the concave and convex areas on the cylindrical mirror are a curved surface formed by a plurality of parabolas with alternating concave and convex rotating around the optical axis Z; the focused annular light has a width of 6 mm and an energy uniformity of more than 89%. In the present invention, the more concave and convex areas there are on the cylindrical mirror, the higher the uniformity of the annular light on the focal plane.

The invention belongs to the technical field of microobjective optical design, and provides a long-working-distance flat-field apochromatic microobjective capable of forming phase difference, so as to solve the technical problem that an existing microobjective is poor in imaging effect on a transparent sample, a switchable phase ring with a coating film is arranged at a rear focal plane and used for delaying the light wave phase of the sample, and the imaging effect of the sample is improved. Phase difference is formed by interference with background light; the optical system is sequentially and coaxially provided with a first balsaming lens, a third lens, a second balsaming lens, a seventh lens and an eighth lens from the image space to the object space along the optical axis, and the focal lengths of the lenses meet the condition that fG1 / f is larger than-6 and smaller than 0; 0 < fG2 / f < 6; 0 < f3 / f < 10; 0 < f7 / f < 3; and f8 / f is greater than 0 and less than 10, so that a working distance of 3.0 mm and system resolution are ensured, secondary spectral aberration can be corrected to realize apochromatic, the field curvature defect of an optical system is overcome, the imaging quality of the field edge is improved, and the optical system can be applied to the technical fields of bioengineering and medicine.

The invention provides a line scanning differential confocal Raman microscopic spectrum co-fusion imaging system, which belongs to the microscopic imaging technology, and comprises a light spot illumination module, a confocal imaging module, a Raman imaging module, a line scanning module and a control module, the confocal imaging module is used for enabling reflected light of a sample to be detected to equivalently enter the first camera, the second camera and the third camera so as to obtain pre-focus, focal plane and post-focus images of the sample to be detected, and the Raman imaging module is used for obtaining chemical Raman component spectrum information; the control module obtains a confocal image with surface height information of the to-be-detected sample according to the pre-focus image, the focal plane image and the post-focus image of the to-be-detected sample, and synchronously fuses the confocal image and the chemical Raman component spectrum information to obtain a four-dimensional image comprising the three-dimensional surface topography and the chemical Raman component spectrum of the to-be-detected sample. According to the invention, map co-fusion can be realized, and more visual multi-dimensional measurement information can be obtained.

The invention discloses a Linnik type wide spectrum measurement automatic focusing system and method. The Linnik type wide spectrum measurement automatic focusing system comprises a sample objective lens, a reference objective lens, a beam splitter prism, a beam splitter, an astigmatic lens group, a first detector, a barrel lens and a second detector. Light with sample morphology information enters the beam splitter prism through the sample objective lens, light reflected by the reference mirror enters the beam splitter prism through the reference objective lens, the light with the sample morphology information and the light reflected by the reference mirror are combined in the beam splitter prism and then enter the beam splitter, and the beam splitter divides the combined light into a first light beam and a second light beam. The first light beam enters the astigmatic lens group and irradiates the first detector, and the second light beam irradiates the second detector through the barrel lens. According to the invention, the focal plane can be searched in a large range, and the problem of short detection distance due to the coherent gap of the existing wide-spectrum interference measurement system is solved.