42results about How to "Reduce contrast" patented technology

The invention discloses a pet emotion recognition system and method, and relates to the technical field of pet emotion recognition, and the system comprises a data acquisition module, a data analysis module, an environment analysis module, an emotion analysis module, an emotion comparison module, and an abnormality processing module. The data acquisition module is used for acquiring classified pet historical emotion data, pet emotion data acquired in real time and environment data acquired in real time, and then sorting the classified pet historical emotion data; the technical key points are as follows: analyzing and processing historical emotion data of the pet, identifying the emotion of the pet from two perspectives of sound and physiology, knowing the relationship between the emotion of the pet and the sound and physiology, and then identifying the emotion of the pet in real time based on the relationship between the emotion of the pet and the sound and physiology. The external environment and the state of the pet are analyzed in the pet emotion recognition process, the pet emotion recognition accuracy can be improved, and the good use prospect is achieved.

The invention discloses an enhanced photoacoustic microscopic imaging method based on physical degradation learning, which comprises the following steps of: on the basis of a photoacoustic imaging principle, degrading an image of a real photoacoustic microscopic image to the ground into a low-quality photoacoustic microscopic image through physical model degradation learning with variability. A high-quality photoacoustic microscopic imaging image is used as a target of supervised training, deep learning is used as a basis, the high-quality photoacoustic microscopic imaging image is input into a self-designed convolutional neural network with an attention mechanism for network training, the quality of a reconstructed image is evaluated until the reconstruction quality reaches the standard, and otherwise, the above steps are executed again. And inputting a real low-quality photoacoustic image into the trained neural network to obtain a reconstructed high-resolution photoacoustic image. According to the method, the resolution ratio and the contrast ratio of the deep photoacoustic microscopic image can be effectively improved, meanwhile, the photoacoustic microscopic image can be denoised, the dependence on the data set can be effectively reduced due to the fact that the data set is obtained through the physical model, and the reconstruction effect under different environments can be improved.

The invention provides an infrared weak and small target detection method and system, electronic equipment and a storage medium, and belongs to the technical field of target detection, and the method comprises the steps: improving a YOLOv8 model for the features of an infrared weak and small target image; and performing target detection on the infrared weak and small target image by using the improved YOLOv8 model. According to the invention, a stronger infrared weak and small target detection capability is provided for the YOLOv8 model, and the problem of target detection precision bottleneck of a traditional model in a complex scene is effectively solved.

The invention relates to the technical field of polaroids, and discloses a preparation method of a dye-based high-durability OLED (Organic Light Emitting Diode) polaroid for vehicle-mounted display, and the preparation process comprises the following steps: putting a PVA (Polyvinyl Alcohol) film into a swelling tank containing 1.0 wt%-2.5 wt% of boric acid for swelling pretreatment; dip dyeing: soaking the PVA film subjected to dip dyeing treatment in a solution tank containing boric acid, and stretching the PVA film; the concentration of boric acid is 1wt%-6wt%, drying, curing the original plate, gluing, coating a pressure-sensitive adhesive on the dye polarized original plate, and then compounding the compensation film A, the compensation film B and the like. The dye-series high-durability OLED polaroid prepared by the invention has a thinned structure and excellent weather resistance, and after a 105 DEG C * 1000h dry temperature test, a 85 DEG C * 85% RH * 1000h high-temperature and high-humidity test and a weather resistance test are met, the optical performance change rate of the polaroid is less than or equal to 5%, and the product is free from depolarization and layering.

The invention provides a safety and reliability evaluation system for an intelligent sensing system, which can be applied to the technical field of automatic driving evaluation and comprises a data acquisition module for acquiring initial fault-free sensor data and transmitting the initial fault-free sensor data to the intelligent sensing system; the fault injection module is used for performing fault data injection on the initial fault-free sensor data to obtain sensor fault data and transmitting the sensor fault data to the intelligent sensing system; the result analysis module is used for receiving and analyzing the test data of the intelligent sensing system to obtain a test result; and the interactive module is used for controlling the work of the data acquisition module, the fault injection module and the result analysis module. Fault information of different formats is generated according to data formats of different types of sensors, and real-time sensor data reading, fault signal injection and data recording and analysis can be achieved. The invention further provides a device for evaluating the safety and reliability of the intelligent sensing system.

The invention provides a lock chamber wall deformation monitoring method, device and system. The method comprises the following steps: S1, acquiring a displacement data set of a lock chamber wall in a first preset period from the current moment; s2, based on the displacement data set, whether the deformation condition of the lock chamber wall meets a first alarm condition or not is judged according to a preset judgment rule; when the first alarm condition is met, generating first early warning information and sending the first early warning information to preset user equipment; when the first alarm condition is not met, S1 is executed; wherein the preset judgment rule means that a monitoring curve set is generated based on the displacement data set; obtaining a first similarity score between the monitoring curve set and the sample curve set; and when the first similarity score is lower than a first score threshold, considering that the deformation condition of the lock chamber wall meets a first alarm condition. A displacement time curve mode is used for monitoring, so that the data volume is reduced, and the overall monitoring efficiency is improved.

The invention discloses a high-visibility point diffusion multi-point defocus lens and glasses with far and myopia protection, the high-visibility point diffusion multi-point defocus lens comprises a lens body, the lens body is provided with a central visual area, a point diffusion area, a defocus light condensation area and a peripheral visual area, and the adjacent areas are in arc transition; the central visible area is positioned in the optical center of the lens body and is used for enabling the eyes of a wearer to clearly see an object at the central position; the point diffusion area is positioned in an area outside the central visible area, is positioned in a position close to the upper part of the middle part of the lens body, and accounts for 40-60% of the surface area of the lens body; the point diffusion region consists of a plurality of diffusion units which are regularly arranged; the out-of-focus light condensation areas are distributed on the periphery of the central visible area in a fan ring shape; the peripheral visible area is distributed on the periphery of the defocus light condensation area in a fan ring shape and covers the edge area of the lens body. Through reasonable distribution of all the areas on the lenses, the hyperopia defocus phenomenon is effectively avoided, meanwhile, stimulation of high-brightness, high-contrast and bright-colored light to eyeballs is weakened, the growth speed of an eye axis is slowed down, the myopia degree is protected against deepening, and effective prevention and control of myopia development are achieved.

The invention discloses a road crack segmentation method and device based on deep learning, electronic equipment and a program product. According to the method, two collaborative and functional complementary processing paths are adopted to perform parallel processing on a to-be-segmented image so as to obtain corresponding feature information: on one hand, the to-be-segmented image is converted into a feature sequence containing spatial position information, and global semantic modeling is performed on the feature sequence; global semantic features representing the overall shape of the crack and long-range semantic dependence are obtained; and on the other hand, local texture and edge detail information of the crack is directly extracted from the to-be-segmented image, and detail enhancement features are obtained. Thirdly, fusing the global semantic features and the detail enhancement features to obtain target fusion features considering crack positioning, connectivity and boundary and texture expression; according to the segmentation result output based on the target fusion features, even tiny cracks can be effectively depicted, and then the continuity, boundary definition and robustness of tiny crack segmentation under the complex road background can be improved.

The utility model relates to the technical field of optical lenses, in particular to a miniature dot matrix contrast-reducing lens, which comprises a lens, the lens comprises a central optical area and a miniature dot matrix area, the miniature dot matrix area comprises two dot matrix structures, namely a large dot matrix with the diameter of 0.18 mm and a small dot matrix with the diameter of 20-30 microns, the number ratio of the large dot matrix to the small dot matrix is 1: 3-1: 8, and the number ratio of the large dot matrix to the small dot matrix is 1: 3-1: 8. The covering density of the dot matrix areas is 10-45%, the dot matrix spacing is 0.2-0.65 mm, the depth of the dot matrix is 2-8 microns, the edge of the dot matrix is provided with a smooth transition area of 0.05-0.1 mm, the lens further comprises micro-lens areas, and the micro-dot matrix areas and the micro-lens areas are alternately distributed. The central optical area of the lens is not covered by the dot matrix, so that clear view is guaranteed; the contrast of the dot matrix area is accurately regulated and controlled, full-view blurring is avoided, micro-lens defocusing and dot matrix contrast reduction are combined, eye axis growth is doubly inhibited, dot matrix size and interval optimization is achieved, and glare and visual interference are reduced.

The invention discloses a restoration enhancement method and system for a nuclear power station fuel assembly character low-quality image, and relates to the technical field of underwater image enhancement, restoration is performed based on a structure forest, and the method specifically comprises the steps: carrying out the edge extraction of a spectrogram of an original image through the structure forest; estimating a point spread function based on the structure forest edge map by adopting a straight line detection and projection mapping algorithm; after estimating a point spread function, restoring the original image through Wiener filtering to obtain a restored clear image; the method specifically comprises the following steps of: obtaining a high-frequency enhanced image by adopting an improved Sobel operator; a low-frequency enhanced image is obtained based on a curve mapping method; and carrying out pixel-level weighted fusion on the high-frequency and low-frequency synchronously enhanced images based on the unsharpened mask to obtain a final enhanced image. The method has the capability of restoring and enhancing character low-quality imaging of the underwater fuel assembly, and solves the two problems of insufficient image character contrast and poor definition at the same time.

The invention discloses a self-cleaning type solar street lamp convenient to maintain, and relates to the technical field of street lamp illumination, the self-cleaning type solar street lamp convenient to maintain comprises a lamp body mechanism, a lamp illumination mechanism, a lamplight diffusion mechanism and a light adjusting mechanism are arranged in the lamp body mechanism, and the lamplight diffusion mechanism is sleeved with the lamp illumination mechanism; the light adjusting mechanism is located in the lamp illumination mechanism, and the lamplight diffusion mechanism is used for adjusting the light illumination angle. In the hazy weather, the transmission mechanism drives the light diffusion assembly to rotate by a half circle, the light ray angle of lamplight can be adjusted, the light ray penetrability is improved, scattering and absorption of light rays by haze are reduced, and the lighting effect of a road is ensured; in addition, the light transmitting assembly and the light expanding assembly are combined together, the penetrability of lamplight is further improved by changing the refraction angle of light, and the good illumination effect is kept in hazy weather.

The invention relates to the technical field of contact lenses, in particular to a multi-level myopia control lens for delaying the myopia progress, which comprises a lens body, the lens body comprises an inner lens layer and an outer lens layer which are overlapped, and at least one functional layer is arranged between the inner lens layer and the outer lens layer. A plurality of microstructure patterns are arranged on the functional layer and are used for reducing the illumination intensity passing through the functional layer; the microstructure pattern is arranged on the functional layer through an etching or printing and dyeing technology; materials adopted by the inner lens layer and the outer lens layer are different from materials adopted by the functional layer. By adopting the scheme, the loss of the myopia prevention and control structure caused by daily use can be reduced, and the service life is prolonged.

The present invention discloses an aviation airborne navigation image target recognition method based on spatial entropy harmony search. The method utilizes the position distribution information of the image grayscale space to calculate the image grayscale space distribution entropy value, and maps it into a uniform distribution function. The function is then processed by 2D-DCT, transform system weighting and inverse 2D-DCT linear transformation to achieve simultaneous enhancement of the global and local contrast of the original image. The method is combined with the maximum entropy harmony search algorithm. Although the method is similar to the genetic algorithm, it adopts a multi-point mating mode in the process of searching for new solutions in the field, so that the new solutions are more diverse and the possibility of the algorithm jumping out of the local optimal solution is improved.

The invention relates to a brain MRI image fusion method and system based on cross-like bilateral filtering. The method comprises the following steps: obtaining brain MRI image data to be fused; performing selective filtering on the image data by using a cross-like bilateral filter, and decomposing to obtain an energy layer and a structural layer; fusing the energy layer and the structure layer according to a fusion strategy; arithmetic addition is carried out on the energy layer and the structure layer after fusion to obtain a final fusion image; wherein the fusion strategy comprises the following steps: guiding fusion of the energy layer by using a visual saliency detection graph VSDM, and obtaining a fusion image of the energy layer through weighted average; a multi-scale morphological gradient MLMG is combined with an improved Laplacian operator WSEML based on eight neighborhoods to guide fusion of the structural layer, and a fusion image of the structural layer is obtained through weighted average. Compared with the prior art, the image fusion method is rapid and effective, and meets the requirement of real-time application.

The utility model relates to a myopia prevention and control lens capable of reducing retina imaging contrast, which comprises a lens body, and the lens body is provided with a first curved surface facing the eyes and a second curved surface opposite to the eyes. The first curved surface is provided with a bright visual area, a light diffusion area and a defocus area, the light diffusion area and the defocus area are annularly arranged on the bright visual area, and the light diffusion area and the defocus area are arranged in an overlapped mode and are the same in area; the first curved surface is further provided with a scale auxiliary area annularly arranged on the periphery of the light diffusion area. The myopia prevention and control device has the advantages that vision is effectively corrected through the bright vision area, contrast reduction is achieved through the light diffusion area, meanwhile, the defocus effect is achieved through the defocus area, vision deepening can be effectively restrained through combination of the three areas, and the myopia prevention and control effect is greatly improved.

The utility model relates to the technical field of near-to-eye display, and discloses an optical module and a head-mounted display device, the optical module is composed of a first optical element and a second optical element; the first side surface of the first optical element faces human eyes; the first side surface of the second optical element faces the second side surface of the first optical element, and the second side surface of the second optical element faces the display screen; the optical module satisfies the following conditions: 0 < = sin (theta1) / sin (theta2) < = 7; wherein theta1 is the maximum field-of-view principal ray incident angle of the first optical element, and theta2 is the maximum field-of-view principal ray emergent angle of the second optical element. According to the head-mounted display device, the refraction angle of the light between the lenses can be limited in a proper range while the size of the optical module is miniaturized, the imaging quality and the size of the optical module are well balanced, and the user experience is effectively improved while the miniaturization design requirement of the head-mounted display device is met.

The present disclosure provides a light-emitting device with improved light output and a preparation method thereof, and belongs to the technical field of optoelectronic manufacturing. The light-emitting device comprises a light-emitting functional layer, a driving substrate and a brightening functional layer. The light-emitting functional layer is located on the driving substrate, and comprises a plurality of light-emitting units arranged at intervals. The brightening functional layer comprises a bearing layer, a reflective layer and a plurality of light-emitting lenses. The bearing layer is located on the surface of the light-emitting functional layer away from the driving substrate. The surface of the bearing layer has a plurality of light-emitting grooves exposing the light-emitting functional layer. Each light-emitting groove exposes at least one light-emitting unit. The reflective layer is located on at least the groove wall of each light-emitting groove. The light-emitting grooves correspond to the light-emitting lenses one by one, and the light-emitting lenses are located in the corresponding light-emitting grooves. The embodiments of the present disclosure can improve the problem of low light output of the light-emitting device and improve the brightness of the light-emitting device.

The utility model discloses an adjustable reflective non-reflective camera lens, and relates to the technical field of camera lenses. The camera comprises a camera and a lens arranged on the front side of the camera. The camera is provided with an adjusting mechanism, a dustproof mechanism and a light supplementing mechanism. The adjusting mechanism comprises an adjusting assembly, a control assembly and a limiting assembly, the adjusting assembly comprises a convex lens fixedly installed on the inner wall of the lens, a concave lens is slidably installed on the inner wall of the lens, a movable groove is formed in the lens, an adjusting block is fixedly installed on the outer wall of the lens, a rectangular groove is formed in the adjusting block, and the limiting assembly is arranged in the rectangular groove. A rack is fixedly installed on the outer wall of the concave lens, and the right side of the rack extends into the rectangular groove and is in sliding connection with the rectangular groove. According to the adjustable reflective non-reflective camera lens, the adjusting mechanism, the dustproof mechanism and the light supplementing mechanism are arranged, and parameters of the lens can be adjusted according to requirements of a user.

The present invention provides a smoke and fog-penetrating imaging device and method based on a near-infrared band, which relates to the technical field of imaging equipment, and includes: a light source and a camera arranged on the left and right sides of a helmet, wherein the light source and the camera are connected via a synchronization signal line; the light source is a near-infrared laser line scanning light source, and the light source includes a semiconductor infrared laser, a galvanometer, a collimating lens, and a Powell prism; the camera is a near-infrared camera with a rolling shutter exposure function, and the camera includes a near-infrared image sensor and a synchronization signal module, and the exposure mode of the near-infrared image sensor is a rolling shutter form, and the output of the synchronization signal module includes a field synchronization signal and a line synchronization scanning signal. In the present invention, the backscattered light entering the near-infrared camera is reduced by the near-infrared laser line scanning light source and the near-infrared camera rolling shutter mode, and the influence of backscattering on image contrast and clarity is reduced from an optical perspective, thereby improving the imaging quality from the source.

The utility model discloses a kind of double-effect contrast defocus microlens sheet, including substrate, the substrate both sides include outer side and inner side, the substrate includes by the curvatures of outer side and inner side jointly constituted refractive area of correcting vision;The outer side surface has regularly and uniformly distributed miniature convex lens, the center of the miniature convex lens is equipped with myopia refractive correction area;The inner side is processed into annular scattering area with scattering effect, the center of the annular scattering area is center visible area without scattering effect;The center of the myopia refractive correction area and center visible area coincides with the geometric center of substrate. Advantageous effect: the utility model can achieve the premise that lens basic visible effect, the function of two can control myopia degree deepening principle is stacked in the mode of double myopia prevention and control effect.

The invention relates to the technical field of image enhancement methods, provides a turbid underwater image enhancement method, and constructs a database updating method in a training process to solve the problem of lack of paired real underwater turbid data sets, and constructs an image enhancement algorithm based on an attention mechanism. The image is further enhanced through a detail restoration network guided by edge information, enhancement of a turbid underwater image with low contrast and definition is achieved, close-range observation can be achieved in a turbid water area, and the method comprises the following steps of S1, collecting turbid image data with labels, S2, making a data set, and establishing a training set and a test set. S3, establishing an image enhancement model based on an attention mechanism, S4, training by using the training set, and updating a training database, and S5, reasoning a turbid image by using the trained model.

The invention relates to the technical field of illumination, in particular to a classroom lamp grating plate and a manufacturing method thereof.The classroom lamp grating plate comprises a light source, non-uniform light rays are emitted on the light source, a diffusion light-transmitting grating plate is arranged below the light source, and the diffusion light-transmitting grating plate comprises a skirt edge, a light inlet face unit, a grating unit and a grating light outlet net face; the light incident surface unit is used for receiving non-uniform light rays, the light incident surface unit, the grating unit and the grating light emergent net surface are jointly arranged in the skirt edge, and light diffusant nanoparticles are arranged in the diffusion light-transmitting grating plate. The surface area of the diffusion light-transmitting grating plate is greatly increased through the concave-convex structure of the grating surface of the diffusion light-transmitting grating plate, the brightness uniformity of the light-emitting surface of the diffusion light-transmitting grating plate is greatly improved in cooperation with the light diffusant nanoparticles, and the average brightness of the surface of the light-emitting surface is reduced; the contrast ratio of the brightness of the light outlet of the diffusion light-transmitting grating plate and the ambient brightness is effectively reduced, the glare of the lamp is greatly reduced, and the ideal lighting effect that the lamp is bright and does not glare is achieved.

The application discloses a medical image tumor segmentation model based on a TransUNet framework and a construction method and a segmentation method thereof, the construction method comprising constructing a segmentation model based on the TransUNet, wherein an encoder of the segmentation model comprises CNN modules and a self-defined VSS module connected in sequence, the output ends of each convolution block of the CNN modules are input into a decoder of the segmentation model through a jump connection layer, the self-defined VSS module comprises a plurality of novel conversion layers stacked in series based on a Mamba module and a focus linear attention module, the self-defined VSS module performs multi-level feature interaction and global modeling on first encoding features output by the CNN module to obtain second encoding features; and the decoder performs feature fusion and up-sampling on the second encoding features and the output of the jump connection layer to obtain a segmentation image for a sample image. The application can significantly improve the segmentation robustness and precision of breast ultrasound images with low contrast, high noise and fuzzy boundaries.

A protective cover includes a flat plate-like protective member (37A), and a scattered ray removal grid (44), in which the scattered ray removal grid is a grid in which a plurality of transmission parts (47) that transmit the radiation and a plurality of absorption parts (46) that absorb the radiation are alternately arranged and a boundary line between the transmission part and the absorption part extends in one direction, and further, in a case in which, on the imaging surface (24A), a direction connecting a chest wall side and a side opposite to the chest wall is defined as a first direction and a direction orthogonal to the first direction is defined as a second direction, the scattered ray removal grid is disposed at a facing position that faces the imaging surface in a posture in which a direction in which the boundary line extends is parallel to the second direction.

The present invention provides a vertical measurement method, a focusing and leveling system and an exposure device based on pupil modulation. The focusing and leveling system adds a first pupil modulation element in the projection component, and adds a second pupil modulation element complementary to the first pupil modulation element in the first detection component. The second pupil modulation element achieves a filtering effect on the surface pattern of the object to be measured through energy distribution modulation and optical phase modulation of the pupil surface. The first pupil modulation element and the second pupil modulation element increase the wave aberration through optical phase modulation of the pupil surface, reduce the contrast of the surface pattern of the object to be measured, and weaken the influence of the surface pattern of the object to be measured on the energy distribution; and the first pupil modulation element and the second pupil modulation element reduce the uneven energy distribution of the measuring beam caused by the reflectivity through energy distribution modulation, thereby reducing the vertical measurement error, improving the vertical measurement accuracy, and ensuring a better imaging transmission effect from the projection component to the first detection component.

The invention belongs to the technical field of visual inspection, and particularly relates to electroplated product online image detection equipment which comprises detection equipment, a conveying table arranged in the detection equipment and used for conveying electroplated products and a detection head arranged in the detection equipment. An air inlet is formed in the end, away from the detection head, of the protective cover, the protective cover is externally connected with a negative pressure fan through an air pipe, a treatment box is arranged in the protective cover and communicates with an inner cavity of the protective cover through an air hole, a filter plate is fixedly installed in the treatment box, and a storage box is rotationally installed at the bottom end of the filter plate; a wiping roller attached to the bottom of the filter plate is movably mounted in the storage box and is hollow, a liquid outlet is formed in the outer wall of the wiping roller, corrosive mist and metal dust in air are sucked and prevented from being attached to the surfaces of a lens and a light source of the detection head, imaging blurring and contrast reduction are prevented, and continuous and stable operation of the detection process is guaranteed.

This utility model discloses a screen structure and a high-gain white screen, belonging to the field of projection display technology. The screen structure includes two substrate layers, with a barrier layer bonded between the two substrate layers via an adhesive layer. The substrate layers, adhesive layer, and barrier layer have different refractive indices. The high-gain white screen includes a protective layer, a diffusion layer, and the aforementioned screen structure, arranged sequentially from the incident surface to the back surface. By utilizing the difference in refractive indices between the substrate layer, adhesive layer, and barrier layer, an optical effect similar to mother-of-pearl is created, reducing light penetration and enhancing light reflection and scattering. This improves detail rendering, reduces the loss of dark areas, enhances resistance to external light interference, reduces contrast, reduces color saturation distortion, reduces light loss during propagation, improves overall brightness uniformity, ensures full presentation of high-resolution signal details, and is compatible with more projection devices.

The invention discloses a display device capable of being switched between transmission and reflection. The display device comprises an OLED display panel and a liquid crystal display panel arranged on the light emitting side of the OLED display panel. The liquid crystal display panel comprises a second substrate, a liquid crystal layer and a first substrate which are sequentially arranged, a linear polarizer and a quarter-wave plate are arranged on the first substrate, the quarter-wave plate is located on the side, facing the liquid crystal layer, of the linear polarizer, and the light-transmitting axis of the linear polarizer and the fast and slow axis of the quarter-wave plate form an angle of 45 degrees. In the transmission mode, liquid crystal molecules in the whole liquid crystal layer are controlled to be in a standing posture, the OLED display panel is opened and displays a picture, light rays emitted by the OLED display panel can penetrate through the liquid crystal display panel, ambient light reflected by the OLED display panel can be absorbed by the linear polaroid, and therefore the situation that the contrast ratio of transmission display is reduced by the ambient light reflected by the OLED display panel is avoided; and in the reflection mode, the OLED display panel is closed, so that the liquid crystal display panel can display pictures by using the ambient light reflected by the OLED display panel.

The utility model provides a light source structure, a vehicle lamp and a vehicle. The light source structure comprises a display unit which comprises a light emitting side and a backlight side; the scattering structure covers the surface of the light emitting side of the display unit; the scattering structure comprises a scattering layer and a high-arch protruding part, the scattering layer and the high-arch protruding part are sequentially arranged in the direction gradually away from the display unit, the middle area of the top surface of the high-arch protruding part protrudes, and the thickness H of the scattering layer ranges from 0.3 mm to 0.8 mm.

The utility model discloses an interference exposure system, and relates to the field of optics, and the interference exposure system comprises a light source module which is used for outputting a collimated light beam; the prism is arranged in the output direction of the collimated light beam and is used for transmitting the incident collimated light beam; the grating mask and the prism are arranged in an attached mode, the grating mask is used for diffracting collimated light beams which penetrate through the prism and are incident on the prism to generate coherent light beams, and the coherent light beams are emitted to a substrate and form a patterned interference exposure field on the substrate; and the prism is also used for refracting and outputting stray light reflected back to the prism by the grating mask. Therefore, the prism can emit stray light, so that the occurrence of the problem that the contrast ratio of interference fringes and the exposure effect are influenced due to the fact that the stray light falls on the substrate again is reduced, and a patterned interference exposure field with higher definition can be formed on the substrate.