112 results about "Geometrical optics" patented technology

The invention discloses a coating thickness detection system and method based on visual monitoring, and relates to the technical field of visual monitoring, and the method comprises the steps: carrying out the preliminary prediction of the coating thickness through geometrical optics; performing coating thickness prediction through a multi-channel neural network based on the pre-processed coating surface image and the preliminary prediction value; according to the predicted thickness of the coating, defect identification and evaluation are carried out, and a final coating thickness and defect comprehensive evaluation result is generated; and real-time feedback is carried out through a flaw comprehensive evaluation result. According to the method, the coating surface image is collected in real time and preprocessed, primary thickness prediction is carried out in combination with geometrical optics, accurate coating thickness prediction is carried out through the multi-channel neural network, and the prediction precision and the adaptive capacity are remarkably improved. Through the defect identification and evaluation module, the type, the shape, the complexity and the position of the coating surface defect are comprehensively considered, and the coating defect is accurately identified and quantitatively evaluated, so that the accuracy and the robustness of defect detection are improved.

The invention provides a confocal measurement system based on transverse coding and a measurement method thereof, and belongs to the technical field of optical detection. According to the measurement system, a light splitting dispersion assembly is added in an existing confocal measurement system, and transverse coding of a spectrum is achieved. According to the measurement method, the problem that only a point-by-point scanning measurement mode can be adopted in an existing confocal measurement technology is solved through a mode of combining geometrical optics of transverse coding with a mathematical algorithm, measurement dimensions in one direction are reduced through a transverse coding mode, and the confocal measurement technology is converted into a line scanning measurement mode from a point type measurement mode. And the measurement time is shortened while the measurement precision of the existing measurement system is improved. According to the measurement system and method provided by the invention, the comprehensive three-dimensional information of the to-be-measured object is measured, and meanwhile, the inclination angle of the to-be-measured object is measured in real time, so that the limitation that the three-dimensional space information of the to-be-measured object and the angle inclination information of the to-be-measured object cannot be measured at the same time in the existing confocal measurement technology is effectively overcome.

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 discloses a multi-mode communication and perception channel twinborn AI data set generation method. The method comprises the following steps: establishing a high-precision three-dimensional indoor scene model and an outdoor scene model; configuring parameters of a signal receiving and transmitting end and the RIS, determining dielectric constants and magnetic conductivities of different object surfaces in a scene according to a signal center frequency, and determining reflection, refraction, scattering and diffraction effects of electromagnetic waves in different media based on a geometric optical theory and a geometric diffraction theory; calculating channel parameters of each ray, generating a channel matrix and a channel intensity thermodynamic diagram based on the channel parameters, and generating a complete data set in combination with scene information; and aligning the coordinates of the scene and the ray, loading and rendering ray data and a channel intensity thermodynamic diagram based on a moving path selected by a user, and obtaining a visual file of the multi-modal channel twin AI data set. According to the invention, refined materials and electromagnetic properties are given to objects in a scene, and efficient simulation and second speed visualization of electromagnetic wave propagation are realized.

The invention provides a super lens, a super lens structure parameter determination method, device and equipment, optical imaging equipment, a storage medium and a program product. The super lens comprises a plurality of areas. Any region comprises a plurality of nano fins; wherein at least part of the area is used for focusing incident light with different wavelengths. The super lens is divided into a plurality of areas, and each area can form a super lens for focusing incident light with different wavelengths, so that wavelength division multiplexing is realized, and compared with a conventional geometrical optical lens for realizing wavelength division multiplexing, the super lens disclosed by the invention has the advantages of small volume and high integration level.

The invention provides a filter wheel disc confocal measurement system based on transverse coding and a measurement method thereof, and belongs to the technical field of optical detection. According to the measurement system, a light splitting dispersion assembly is added in an existing confocal measurement system, and transverse coding of a spectrum is achieved. According to the measurement method, the problem that only a point-by-point scanning measurement mode can be adopted in an existing confocal measurement technology is solved through a mode of combining geometrical optics of transverse coding with a mathematical algorithm, measurement dimensions in one direction are reduced through a transverse coding mode, and the confocal measurement technology is converted into a line scanning measurement mode from a point type measurement mode. The measurement precision of the existing confocal measurement system is improved, and the measurement time is shortened. According to the measurement system and method provided by the invention, the comprehensive three-dimensional information of the to-be-measured object is measured, and meanwhile, the inclination angle of the to-be-measured object is measured in real time, so that the limitation that the three-dimensional space information of the to-be-measured object and the angle inclination information of the to-be-measured object cannot be measured at the same time in the prior art is effectively overcome.

The invention discloses a steam turbine blade surface image acquisition method and system based on 3D visual path planning, the system comprises an industrial robot, a product tooling platform, a surface data acquisition unit and a geometrical optical unit, the surface data acquisition unit comprises a 3D sensor and a 2D industrial camera, the geometrical optical unit is formed by combining a plurality of optical light sources, and the 3D sensor is connected with the 2D industrial camera. The blade is illuminated at different angles and under different illumination conditions, details and features of the surface of the blade can be highlighted, and the contrast ratio and definition of the image are improved. The method can be widely applied to industrial detection and maintenance, the position and angle of the acquisition equipment can be dynamically adjusted by constructing the 3D model of the blade in real time and intelligently planning an acquisition path algorithm, and a data acquisition system is guided to realize comprehensive and accurate image acquisition on the surface of the blade through accurate path planning and multi-view fusion.

The invention provides a lens eye intraocular lens based on spatial filtering and a preparation method thereof.The lens eye intraocular lens comprises an optical body, and the optical body comprises an optical surface and an optical surface with a spatial filtering structure; the spatial filtering structure satisfies a filtering function capable of changing the spatial frequency spectrum of the imaging light beam to expand the focal depth. The imaging process generally refracted from geometrical optical light is used as the imaging process of wavefront transformation, and the optical surface with the spatial filtering structure is introduced into the intraocular lens with the lens to serve as a filter to change the filtering function of the filtering structure, so that the spatial frequency spectrum structure of an imaging light beam can be changed, and the purposes of expanding the focal depth and improving the imaging efficiency are achieved. Dynamic vision is enhanced, and the effects of correcting myopia and presbyopia are achieved; and a better visual effect is achieved. The tolerance to bad effects such as eccentric inclination and the like is high; the structure is simple and the stability is good.

Device for improving an optical detecting smoke apparatus and implementing thereof. Apparatus and methods for detecting the presence of smoke in a small, long-lasting smoke detector are (disclosed. Specifically, the present disclosure shows how to build one or more optimized blocking members in a smoke detector to augment signal to noise ratio. This is performed while keeping the reflections from the housing structure to a very low value while satisfying all the other peripheral needs of fast response to smoke and preventing ambient light. This allows very small measurements of light scattering of the smoke particles to be reliable in a device resistant to the negative effects of dust. In particular, geometrical optical elements, e.g., cap and optical defection elements, are disclosed.

The invention discloses a method and a system for constructing a reflective non-imaging solar concentrating system. The method comprises the following steps of: determining a concentrating system structure and a target energy flux density distribution condition; determining the energy mapping relation between the condenser and the receiver; establishing the energy mapping relation between the reflecting surface and the receiving surface according to the geometrical optical reflection law; according to the to-be-designed energy flux density distribution condition of the receiving surface, determining a mapping relation between an incidence point of the incident light on the reflecting surface and an arrival point on the corresponding receiving surface; deducing a generatrix coordinate iterative formula of the condensing reflecting surface according to the energy mapping relation; coordinates of sampling points on the reflecting surface of the condensation system are calculated and fitted into a curve, and a condensation system reflecting surface model meeting the mapping relation is generated; and performing optical simulation and analysis on the established system model, and feeding back and optimizing the structure of the condensation system according to a simulation result. And the problem of non-uniform distribution of solar concentrating energy flow is solved while relatively high optical efficiency is ensured.

The application provides a high-precision autocollimator based on the Tyman Green interference principle and an angle measuring method, aiming at solving the problem that the prior art cannot continue to break through the existing angle measuring precision due to the limitation of geometric optical principle and the influence of environmental factors. The autocollimator comprises a laser, a filtering collimation module, a beam splitter, a reference mirror, a plane mirror, a detector and a data acquisition and processing computer. After the autocollimator is leveled, the plane mirror is placed on a turntable to be measured, and the measurement is carried out when the turntable has no rotation angle and has a rotation angle, so that the laser is emitted to the filtering collimation module to be emitted as monochromatic parallel light to the beam splitter and is divided into two paths. One path is reflected by the plane mirror and then passes through the beam splitter to reach the detector again. The other path is reflected by the reference mirror and then reflected by the beam splitter to reach the detector again. The two beams interfere on the target surface of the detector, the detector records the interference image and uploads it to the computer to calculate the interference fringe offset, so that the angle measurement is completed.

The invention discloses a visible light communication anti-eavesdropping method based on deep reinforcement learning and an optical intelligent reflecting surface, and relates to visible light communication security. Constructing a multi-user safe visible light communication indoor model, and designing a reverse pre-reflection model based on geometrical optical modeling to drive a deep reinforcement learning agent to learn; and accumulating experience by interacting with the environment, sampling and updating the weight of the deep reinforcement learning network by a sampling experience playback pool, and guiding intelligent control on LED beam forming and an optical intelligent reflecting surface. The guide error of the optical intelligent reflecting surface in the environment is perceived by the model at each moment, the secrecy rate of a receiving user is received, the deep reinforcement learning network is combined with the strategy at the previous moment and the environment state to output the strategy at the next moment, and the experience playback pool is circularly updated. And deep reinforcement learning is driven by a reverse pre-reflection model to jointly optimize LED beam forming and optical intelligent reflecting surface guiding, and the optical intelligent reflecting surface is used for accurately controlling a reflection path in a complex dynamic environment, so that the safety communication capability and the resource allocation efficiency are improved.

The invention provides a terahertz spectrum measurement cavity suitable for pipeline gas sensing and application of the terahertz spectrum measurement cavity, and belongs to the field of gas sensing detection. According to the terahertz spectrum measurement cavity suitable for pipeline gas sensing, the optical path is greatly increased in a limited space through multiple reflections, the detection sensitivity is improved, the optical path is accurately calculated based on the geometrical optics principle to meet the time delay condition of THz-TDS, and high-sensitivity pipeline gas spectrum detection is achieved by adapting to a pipeline installation scene. The structure of the terahertz spectrum measurement cavity suitable for pipeline gas sensing can simultaneously meet the requirement of accurate calculation of an optical path (meet the requirement of terahertz waves on a delay condition), the volume of the gas chamber is small, and the interior of the gas chamber has a long optical path (the operating distance between the terahertz waves and gas to be measured is increased as much as possible in a limited space) through multiple reflections; the device is suitable for high-sensitivity terahertz gas detection inside / outside a pipeline.

The invention discloses a method for correcting an error introduced by oblique incidence of light in aspheric surface interference detection, which relates to the technical field of optical precision measurement and comprises the following steps of: constructing an interference measurement system, and obtaining surface shape error distribution of an aspheric surface to be measured; constructing a corresponding geometrical optical model according to actual space layout parameters of an interference measurement system, and calculating a mapping relation between theoretical space coordinates of an interference measurement result and an illegal oblique incidence angle of a light beam; pixel coordinates of the interference measurement result are converted into theoretical space coordinates, and the oblique incidence angle of each sampling point of the actual surface shape data on the aspheric surface to be measured is calculated through an interpolation algorithm based on the mapping relation; and finally, through the relationship between the surface shape error during oblique incidence and normal incidence and the oblique incidence angle, completing the correction of the light oblique incidence introduction error in the to-be-detected aspheric interference detection. According to the method, the problem of errors caused by oblique incidence of light rays in the interference measurement process of the aspheric element is solved, and the detection precision is remarkably improved.

The disclosure describes a kind of anti-resonant hollow fiber size parameter measurement system and measurement method, the measurement system includes sequentially connected incident light source, light source processing module, fiber to be measured, data acquisition module and data processing module, data processing module is filtered to the spectrum formed by the coherent superposition of multiple scattering light beams, Fourier transform group delay spectrum is obtained, and peak retrieval is carried out to the group delay spectrum, and the group delay difference caused by the coherent superposition of each light beam in group delay spectrum is obtained, and the size parameters of anti-resonant hollow fiber are obtained based on the multi-beam interference geometric optics model and the group delay difference between each light beam. Thus, the simultaneous on-line measurement of multiple parameters of anti-resonant hollow fiber can be realized, and the drawing efficiency and output efficiency of anti-resonant hollow fiber can be further improved, and the fiber manufacturing cost is reduced.

An electronic device includes a backlight module, a light modulating panel, a lens structure and a display panel. The backlight module includes light emitting units. The light modulating panel has pixels. The light modulating panel includes a substrate and a light modulating panel medium layer. The lens structure is disposed on the light modulating panel and includes lenses, wherein at least one lens corresponds to at least two pixels. The display panel is disposed on the lens structure. One of the lenses has a protruding surface, a first geometric optical distance L1 is included between the protruding surface and the light modulating panel medium layer, the one of the lenses has a focal length LF and a field of view at focal point FOV, wherein the first geometric optical distance L1, the focal length LF and the field of view at focal point FOV satisfy:0.5≤L⁢1 / LF≤0.8,and⁢ 45∘≤FOV≤7⁢0∘.

The present invention provides a method for constructing the light field distribution of the exit pupil plane of a confocal microscope system. By using geometric optics and reasonable mathematical approximation to analyze the information of the confocal microscope system parameters facing any two-dimensional tilt angle, the light field distribution of the exit pupil plane of the objective lens of the confocal microscope system is constructed, which not only avoids the complexity of the construction method based on diffraction theory and the huge amount of calculation when simulating the distribution, but also avoids the large error caused by approximating the reflected light as a circle in the construction method based on geometric optics, which cannot truly reflect the actual distribution. The method for constructing the light field distribution of the exit pupil plane of the confocal microscope system provided by the present invention takes into account the physical phenomena under actual conditions, and constructs the light field distribution of the exit pupil plane of the objective lens of the confocal microscope system that is more in line with the actual situation.

The invention discloses a short-process preparation method of an ultra-high-speed laser cladding coating on the surface of a shaft part and the obtained coating, and the method comprises the following steps: firstly, based on energy conservation and momentum balance, calculating and determining a stable process window of ultra-high-speed laser cladding; based on a geometrical optical model, the horizontal offset distance of the laser head relative to the central axis of the workpiece is calculated and controlled. Based on molten pool stress analysis under a rotating coordinate system, the relation between the rotating direction of a workpiece for restraining flowing of a molten pool and the offset direction of a laser head relative to the central axis of the workpiece is determined, under the determined conditions, ultra-high-speed laser cladding is conducted on the outer circle surface of the shaft part, and single-pass precision grinding is directly conducted after cladding. According to the method, the thin-layer coating with the smooth surface and the uniform thickness is obtained through physical stability control, the machining route of cladding-turning-grinding is simplified into cladding-single-pass precision grinding, and the machining allowance and the production cost are remarkably reduced.

The present invention discloses a method for extracting urban water bodies taking into account the shadows of high-resolution remote sensing images, including: a high-resolution urban water body remote sensing image data set; a shadow object feature correction model based on radiation transmission and geometric optics, introducing K-M equation, bright channel prior, guided filtering method and building density data to estimate and enhance the environmental scattering of the shadow area, and obtaining a shadow object feature enhancement model; adding an attention mechanism and a loss function to the network model for optimization to obtain an optimized network model; inputting the high-resolution urban water body remote sensing image data set into the shadow enhancement algorithm model and the optimized network model to obtain a water body remote sensing enhanced image, and complete the extraction of urban water body information. The present invention not only retains the overall hierarchy of the remote sensing image, but also retains the details of the objects in the shadow, and realizes the accurate extraction of urban water body information.

The present invention provides a phakic intraocular lens based on spatial filtering and a preparation method thereof. The phakic intraocular lens includes an optical body, and the optical body includes an optical surface and an optical surface with a spatial filtering structure. The spatial filtering structure satisfies a filtering function that can change the spatial spectrum of the imaging light beam to expand the depth of focus. The present invention regards the imaging process that is usually refracted by geometric optical rays as an imaging process of wavefront transformation, and by introducing an optical surface with a spatial filtering structure in the phakic intraocular lens as a filter, changing the filtering function of the filtering structure can change the spatial spectrum structure of the imaging light beam, achieving the effects of expanding the depth of focus, enhancing dynamic vision, and simultaneously correcting myopia and presbyopia; having a better visual effect. Moreover, it has strong tolerance to adverse effects such as decentration and tilt; and has a simple structure and good stability.

The invention relates to the technical field of computational electromagnetism, in particular to a metasurface scattering behavior analysis method and device, equipment and a storage medium. The method comprises the following steps: tracking an incident wave emitted into the metasurface based on geometrical optics; for the tracked incident wave, determining a first relationship between the equivalent surface current and the scattered field based on physical optics; determining an equivalent surface current based on the generalized boundary condition and a surface polarizability model; and determining a scattering field by combining the equivalent surface current and the first relationship by adopting Gordon integral. According to the metasurface scattering behavior analysis method provided by the embodiment of the invention, the surface polarizability model is combined with physical optics and geometrical optics, so that the scattering behavior related to the metasurface target can be effectively analyzed, and meanwhile, the calculation amount is reduced.

The application provides a chip-level biomolecule detection system, which comprises a biomolecule detection chip and an integrated module; the integrated module comprises a temperature control chip and an information acquisition assembly; the temperature control chip is in heat-conducting contact with the biomolecule detection chip; the information acquisition assembly comprises an optical waveguide chip and an image sensing chip; the optical waveguide chip is covered on the image sensing chip, and a filter layer is arranged between the optical waveguide chip and the image sensing chip. Nucleic acid extraction, purification, enrichment and amplification can be realized through the biomolecule chip; low power consumption and high power density can be realized by using the temperature control chip; the optical waveguide chip does not need to be installed with geometric optical components, and the optical path calibration and maintenance in the later stage are avoided, which is beneficial to multi-channel large-scale parallel detection and can be manufactured on a large scale; the structure is simple, and the application requirements of equipment miniaturization and portability are met through chip-level integration. The application also provides a detection method, which is simple in steps, accurate in temperature control, high in detection efficiency and reliable in results.

The invention provides a zoom type optical signal gain regulator and a circuit, the zoom type optical signal gain regulator comprises a support, the support is provided with a light-emitting part, a convex lens, a photoresistor and an adjusting part, the convex lens is arranged between the light-emitting part and the photoresistor, and the adjusting part is arranged between the light-emitting part and the photoresistor. The light emitting part is used for emitting parallel light to the convex lens and irradiating the parallel light on the photoresistor, the adjusting part is used for adjusting the distance between the photoresistor and the convex lens, and the focus of the convex lens is located between the photoresistor and the convex lens. According to the optical principle of focusing of the convex lens, the distance between the photoresistor and the convex lens is precisely changed through the adjusting piece, so that the light intensity irradiated on the photoresistor is continuously changed, the resistance value of the photoresistor is changed smoothly and is wide in range through the adjusting mode based on geometrical optics, stepless continuous gain adjustment is achieved, and the precision of the light intensity is improved. The adjusting precision is high.

The invention belongs to the technical field of new view angle synthesis, and discloses a generalized method for joint optimization of structured light and a neural radiation field. Superposing a plurality of complex components with independent phases to generate structured light; the sampling factor is applied to the structured light, bicubic interpolation is used for sampling the structured light, and the process is irrelevant to depth information; simulating a light transmission process from the scene to be measured to the stereo camera by adopting geometrical optics; a view angle conversion operation is completed according to the depth image and the shielding image of the camera view angle, the structured light is distorted to a binocular view angle, and an active stereo image is obtained; the active stereo image and the RGB stereo image generate stereo image features and a three-dimensional feature body together through a feature extractor, and a renderer based on a neural radiation field is adopted to perform new view angle synthesis and geometric prediction; the whole process from the structured light to the nerve radiation field can be microprocessed, and joint optimization is carried out.

The application discloses a short-focus projection touch geometric optical adaptive accurate calibration method, relates to the technical field of projection touch calibration, and is used for solving the problems of projection and touch geometric coupling, complicated calibration and long-term overall drift correction, and comprises the following steps: a unified geometric optical model and a layered state vector are established; a factory side establishes a model geometric optical priori, a residual base and a drift mode library based on multiple sample mechanisms; when a terminal is installed, a few-point joint calibration is completed by combining attitude and distance observation and a small amount of user clicks; in a running stage, projection side and touch side drift are identified by using multi-source observation data, and a state vector is updated; based on screen area error, uncertainty and interactive density calculation information value, an interface control layout is adjusted, and an explicit calibration trigger area is adjusted, so that the interactive area can maintain high and stable projection alignment accuracy and touch positioning consistency under different installation conditions and long-term operation.

This disclosure relates to a method and system for underwater calibration of composite polarization states based on an equal focal length refraction model. The method includes: approximating the incident angle of light under small-angle conditions by simultaneously applying geometrical optics imaging equations and Snell's law of refraction, obtaining the transformation relationship between the coordinates of the underwater imaging point and the coordinates of the theoretical imaging point in air, and establishing an equal focal length refraction mathematical model for the underwater camera and projector; designing a composite polarization state encoded sinusoidal projection calibration pattern based on this model; utilizing the polarized light projection characteristics, encoding the horizontally polarized light of the green channel of the calibration pattern into horizontal cosine fringes, and the vertically polarized light of the blue channel into vertical sine fringes; superimposing the cosine and sine fringes to generate two sets of orthogonal polarization state fringe patterns, and performing phase calculation and reprojection error optimization based on the equal focal length refraction mathematical model to achieve parameter calibration. This method can significantly improve the calibration accuracy and efficiency of underwater visual measurements.

The utility model discloses a steam turbine blade surface image acquisition system based on 3D visual path planning, which comprises an industrial robot unit, a product tooling platform unit, a surface data acquisition unit and a geometrical optics unit, and is characterized in that the surface data acquisition unit comprises a 3D sensor and a 2D industrial camera; the geometrical optical unit is formed by combining a plurality of optical light sources and illuminates the blade at different angles and under different illumination conditions, so that details and features of the surface of the blade can be highlighted, and the contrast ratio and definition of an image are improved. The system utilizes 3D visual path planning to guide the data acquisition unit to perform steam turbine blade surface image acquisition, can be widely applied to industrial detection and maintenance, can dynamically adjust the position and the angle of acquisition equipment, and can realize accurate path planning and multi-visual-angle fusion through accurate path planning and multi-visual-angle fusion. And the data acquisition system is guided to realize comprehensive and accurate image acquisition of the blade surface.

The invention relates to the technical field of channel modeling, and particularly discloses a circular pipeline electric field reconstruction method and device based on mirror image method ray tracing and a medium, and the method comprises the steps: building a multi-path model through a mirror image method, setting the radius a of a circular pipeline, the coordinates # imgabs0 # of a transceiver at any position in the circular pipeline and the reflection frequency i, all propagation paths of a geometrical optical propagation model in a two-dimensional polar coordinate system are obtained, the electric field intensity is calculated, the circular waveguide function is calculated, the intensity component of each mode of the circular waveguide at different positions is calculated, the intensity component of each mode of the circular waveguide is calculated, the intensity component of each mode of the circular waveguide is calculated, the intensity component of each mode of the circular waveguide is calculated, the intensity component of each mode of the circular waveguide is calculated, the intensity component of each mode of the circular waveguide is calculated, the intensity component of each mode of the circular waveguide is calculated, the intensity component of each mode of the circular waveguide is calculated, and electric field reconstruction is carried out to obtain field distribution E 'Rx (rho, phi, z) at any position in the circular pipeline. According to the method, a geometrical optical model related to circular reflection is established and combined with a circular waveguide model, electromagnetic wave propagation characteristics between point sources at any position can be obtained, and fluctuation of path loss under the multi-mode condition can be explained.

In one embodiment, the method serves to produce a holographic plate (2) and comprises: - Providing a recording geometry optic (4), - Providing a photopolymer (3), and - simultaneous illumination of the photopolymer (3) with a first laser beam (L1) and a second laser beam (L2), thereby generating a holographic pattern (22) in the photopolymer (3), wherein - only the first laser beam bundle (L1) passes through the recording geometry optics (4), - a light entry surface (43) of the recording geometry optics (4) for the first laser beam bundle (L1) points away from the photopolymer (3) and a light exit surface (44) of the recording geometry optics (4) is facing the photopolymer (3), - the recording geometry optics (4) comprises a lens array (41) that divides the first laser beam bundle (L1) into a plurality of partial beam bundles (LS), and - each of the partial beam bundles (LS) illuminates the largest part of the sample area (20).

This application relates to the field of sensing, detection, and obstacle avoidance technology, and particularly to a multi-line laser module. The module includes a base, optical elements, a first light source, and a second light source. The optical elements are mounted on the base. The first light source is mounted on the base, and its beam, after passing through the optical elements, forms at least one main ray, which is used for forward distance detection. The second light source is mounted on the base, and its beam, after passing through the optical elements, forms at least two auxiliary rays, which are used for lateral distance detection. This application utilizes the first light source in conjunction with a geometric optical lens to form a high-precision main ray, ensuring the accuracy of forward detection. The second light source, in conjunction with a diffraction element, forms multiple auxiliary rays, achieving wide-range lateral detection. The two work together to eliminate blind spots and improve the completeness of environmental perception. The second light source can generate multiple auxiliary rays using a single diffraction element, eliminating the need for independent light sources and lenses for each auxiliary ray, significantly reducing the module size.