Brightness uniformity detection method, system and device of self-focusing lens array
The imaging light intensity data of the self-focused lens array is obtained through the movement of the near-field optical detector, which solves the problem that the prior art is difficult to detect the brightness uniformity of the self-focused lens array, and realizes accurate detection and direct detection of the brightness uniformity of the self-focused lens array. Measurement, suitable for short object distances and small lens arrays.
Patent Information
- Application Number
- CN202310815531.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-04
- Publication Date
- 2025-01-07
AI Technical Summary
The existing optical systems are difficult to detect the brightness uniformity of the self-focusing lens array, especially due to its small lens unit, axial symmetry and short focal length, which makes traditional detection methods unable to perform effective detection.
The imaging light intensity data of the self-focused lens array is obtained by moving the near-field optical detector, the brightness uniformity of each lens unit is determined, and a brightness uniformity curve is generated to detect the brightness uniformity of the self-focused lens array.
It realizes accurate detection of the brightness uniformity of the self-focused lens array, and is suitable for short object image distances and small lens arrays, simplifies the detection process, improves detection efficiency and accuracy, and directly measures the brightness uniformity of the image surface without cumbersome conversion. .
Smart Images
Figure CN119269022A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of optical detection technology, and in particular to a method, system and device for detecting brightness uniformity of a self-focusing lens array. Background Art
[0002] The image formed by the self-focusing lens array is the result of the overlapping images formed by the self-focusing lens units. Each self-focusing lens has a light distribution in the shape of half a football. The self-focusing lens array is an arrangement of multiple lens units, so the light of the self-focusing lens array is the sum of the light of each unit lens, thus generating the light uniformity of the small block arrangement of lenses. This index is an important indicator to measure the consistency of the light energy transfer efficiency on the entire image plane when the self-focusing lens array performs imaging activities. It is an indicator to measure the level of consistency of the brightness perception of the picture on the frame, and it is also an indicator to measure the consistency of the resolution ability on the frame.
[0003] At present, common optical systems often use imaging photometers to test brightness. The basic structure is usually composed of a visual matching detector, an optical system, and a signal output processing system proportional to the brightness (or tristimulus value). During the test, the distance between the test position and the lens needs to be relatively long to complete the relevant test. Therefore, these test instruments are only suitable for measuring long-distance luminous surfaces, such as road brightness, landscape lighting, instrument panel brightness, display brightness, light sources and light-emitting devices, movies and television, traffic signs, buildings, atmospheric luminosity and other fields. The uniformity of brightness can only be measured by the difference in brightness distribution data on the measured image.
[0004] Self-focusing lens array is a special product, which usually has the characteristics of small unit lens size, small aperture, non-axisymmetric product, short focal length and short working distance. Therefore, it is impossible to detect the brightness uniformity of self-focusing lens array by traditional detection method. Summary of the invention
[0005] The purpose of the embodiments of the present application is to provide a method, system and device for detecting the brightness uniformity of a self-focusing lens array, which can detect the brightness uniformity of the self-focusing lens array.
[0006] In a first aspect, an embodiment of the present application provides a method for detecting brightness uniformity of a self-focusing lens array, comprising:
[0007] Determine the target image plane area where the target light source passes through the self-focusing lens array to be tested;
[0008] Based on the target image plane area, the imaging light intensity data of the self-focusing lens array to be tested is obtained by controlling the movement of a near-field optical detector;
[0009] The brightness uniformity of the self-focusing lens array to be tested is determined according to the imaging light intensity data.
[0010] In an embodiment of the present application, after determining the imaging surface area of the array to be tested, the imaging light intensity data of the array is acquired by controlling the movement of the near-field optical detector, thereby enabling the brightness uniformity of the self-focusing lens array to be tested.
[0011] In some possible embodiments, the step of controlling the movement of a near-field optical detector to obtain imaging light intensity data of the self-focusing lens array to be tested includes:
[0012] The imaging light intensity of each lens unit corresponding to the position of the self-focusing lens array to be tested is obtained in sequence by controlling the movement of the near-field optical detector, as the imaging light intensity data of the self-focusing lens array to be tested.
[0013] In the embodiment of the present application, the imaging light intensity of each lens unit is obtained separately as a data basis for determining brightness uniformity, thereby improving the accuracy of brightness uniformity detection.
[0014] In some possible embodiments, determining the brightness uniformity of the self-focusing lens array to be tested according to the imaging light intensity data includes:
[0015] Determine the brightness uniformity corresponding to each column of lens units according to imaging light intensity data at different positions of each column of lens units in the self-focusing lens array to be tested;
[0016] The brightness uniformity of the self-focusing lens array to be tested is determined according to the brightness uniformity corresponding to each column of lens units.
[0017] In the embodiment of the present application, the brightness uniformity of each vertical column of the lens array is first obtained, and then the brightness uniformity of the entire lens array is determined according to the brightness uniformity of each column of lens units, thereby improving the accuracy of the lens array brightness uniformity detection.
[0018] In some possible embodiments, determining the brightness uniformity corresponding to each column of lens units according to imaging light intensity data at different positions of each column of lens units in the self-focusing lens array to be tested includes:
[0019] According to the imaging light intensity data at different positions of each column of lens units in the self-focusing lens array to be tested, the maximum light intensity and the minimum light intensity of the image plane corresponding to each column of lens units are determined;
[0020] The brightness uniformity corresponding to each column of lens units is determined based on the maximum value and the minimum value of the light intensity of the image plane corresponding to each column of lens units.
[0021] In the embodiment of the present application, when determining the brightness uniformity of each column of lens units, the maximum and minimum values of the light intensity are obtained according to the light intensity data of the current column, and then the brightness uniformity of the lens units in the column is determined by using a set calculation method according to the maximum and minimum values of the light intensity. This simplifies the brightness uniformity detection process and improves the efficiency of brightness uniformity detection.
[0022] In some possible embodiments, determining the brightness uniformity of the self-focusing lens array to be tested according to the brightness uniformity corresponding to each column of lens units includes:
[0023] A brightness uniformity curve of the self-focusing lens array to be tested is generated according to the brightness uniformity corresponding to each column of lens units.
[0024] In the embodiment of the present application, by generating a brightness uniformity curve of the entire lens array according to the brightness uniformity of each column of lens units, the brightness uniformity of the entire lens array can be intuitively reflected, thereby improving the intuitiveness of the brightness uniformity index.
[0025] In a second aspect, an embodiment of the present application further provides a brightness uniformity detection system for a self-focusing lens array, comprising an optical platform, a target light source, a self-focusing lens array to be tested, a near-field optical detector, and a control device;
[0026] The target light source, the self-focusing lens array to be tested and the near-field optical detector can be movably connected to the optical platform respectively;
[0027] The control device is used to implement any of the above-mentioned methods for detecting brightness uniformity of the self-focusing lens array.
[0028] In an embodiment of the present application, a detection system corresponding to a brightness uniformity detection method of a self-focusing lens array is provided, including a target light source, a self-focusing lens array to be tested, a near-field optical detector and a control device. The control device controls each detection component to move or fix, so that the near-field optical detector collects light intensity data of the self-focusing lens array to be tested, thereby realizing the brightness uniformity detection of the self-focusing lens array.
[0029] In some possible embodiments, the brightness uniformity detection system of the self-focusing lens array further includes an aperture; the aperture is used to limit the outgoing light of the target light source to light that is adapted to the shape of the self-focusing lens array to be tested.
[0030] In an embodiment of the present application, the detection system also includes an aperture, which can focus the light from the light source onto the entire lens array, thereby improving the efficiency and accuracy of brightness uniformity detection.
[0031] In a third aspect, an embodiment of the present application provides a brightness uniformity detection device for a self-focusing lens array, comprising:
[0032] An image plane determination module, used to determine the target image plane area of the target light source passing through the self-focusing lens array to be tested;
[0033] A light intensity acquisition module, used to acquire imaging light intensity data of the self-focusing lens array to be tested by controlling the movement of a near-field optical detector based on the target image plane area;
[0034] A uniformity determination module is used to determine the brightness uniformity of the self-focusing lens array to be tested according to the imaging light intensity data.
[0035] In a fourth aspect, an embodiment of the present application provides a computer program product, wherein the computer program product includes a computer program, wherein when the computer program is executed by a processor, the method described in any embodiment of the first aspect can be implemented.
[0036] In a fifth aspect, an embodiment of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor can implement the method described in any embodiment of the first aspect when executing the program. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0038] Figure 1 A schematic diagram of a process for detecting brightness uniformity of a self-focusing lens array provided in an embodiment of the present application;
[0039] Figure 2 One of the structural schematic diagrams of the brightness uniformity detection system of the self-focusing lens array provided in the embodiment of the present application;
[0040] Figure 3 The second structural schematic diagram of the brightness uniformity detection system of the self-focusing lens array provided in the embodiment of the present application;
[0041] Figure 4 A schematic diagram of the structure of a brightness uniformity detection device for a self-focusing lens array provided in an embodiment of the present application;
[0042] Figure 5A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0043] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.
[0044] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0045] like Figure 1 As shown, the embodiment of the present application provides a method for detecting brightness uniformity of a self-focusing lens array, which may include the steps of:
[0046] S1, determining the target image area of the target light source 1 through the self-focusing lens array 2 to be tested;
[0047] S2, based on the target image area, by controlling the movement of the near-field optical detector 3 to obtain the imaging light intensity data of the self-focusing lens array 2 to be tested;
[0048] S3. Determine the brightness uniformity of the self-focusing lens array 2 to be tested according to the imaging light intensity data.
[0049] It should be noted that, by referring to the usage scenario, the image plane area where the light of the target light source 1 is imaged after passing through the self-focusing lens array 2 to be tested can be determined. Based on the determined image plane area, by controlling the movement of the near-field optical detector 3, the image plane light intensity data of the self-focusing lens array 2 to be tested can be collected, and then the brightness uniformity of the self-focusing lens array 2 to be tested can be determined according to the set calculation method based on these data. It should be noted that the self-focusing lens array 2 to be tested can be composed of lens units arranged in multiple rows and columns, for example, 300 lens units arranged in 3 rows and 100 columns.
[0050] In the embodiment of the present application, after the imaging surface area of the array to be tested is determined, the imaging light intensity data of the array is acquired by controlling the movement of the near-field optical detector 3, thereby enabling the brightness uniformity of the self-focusing lens array to be tested.
[0051] In some possible embodiments, the imaging light intensity data of the self-focusing lens array 2 to be tested is obtained by controlling the movement of the near-field optical detector 3, including:
[0052] The imaging light intensity of each lens unit corresponding to the position of the self-focusing lens array 2 to be tested is obtained in sequence by controlling the movement of the near-field optical detector 3 as the imaging light intensity data of the self-focusing lens array 2 to be tested.
[0053] It should be noted that when collecting the imaging light intensity data of the self-focusing lens array 2 to be tested, multiple imaging light intensity data can be collected according to a set step length for brightness uniformity calculation. In the embodiment of the present application, the near-field optical detector 3 is controlled to move according to the small distance between adjacent lens units as the step length, and the imaging light intensity of each lens unit is collected one by one.
[0054] In the embodiment of the present application, the imaging light intensity of each lens unit is obtained separately as a data basis for determining brightness uniformity, thereby improving the accuracy of brightness uniformity detection.
[0055] In some possible embodiments, determining the brightness uniformity of the self-focusing lens array 2 to be tested according to the imaging light intensity data includes:
[0056] Determine the brightness uniformity corresponding to each column of lens units according to the imaging light intensity data at different positions of each column of lens units in the self-focusing lens array 2 to be tested;
[0057] The brightness uniformity of the self-focusing lens array 2 to be tested is determined according to the brightness uniformity corresponding to each column of lens units.
[0058] It should be noted that, since the self-focusing lens array 2 to be tested is composed of lens units in multiple rows and columns, for example, 300 lens units arranged in 3 rows and 100 columns, the brightness uniformity of the lens units in each vertical column can be tested. For example, the brightness uniformity corresponding to 100 vertical columns of lens units can be obtained, and then the overall brightness uniformity of the self-focusing lens array 2 to be tested can be further determined based on the brightness uniformity of all image planes at different positions along the "row" direction of the lens.
[0059] In the embodiment of the present application, the brightness uniformity of the image of each vertical column of lens units of the lens array at different positions along the "row" direction is first obtained, and then the brightness uniformity of the entire lens array is determined based on the brightness uniformity of each column of lens units, thereby improving the accuracy of the lens array brightness uniformity detection.
[0060] In some possible embodiments, determining the brightness uniformity corresponding to each column of lens units according to imaging light intensity data at different positions of each column of lens units in the self-focusing lens array 2 to be tested includes:
[0061] According to the imaging light intensity data at different positions of each column of lens units in the self-focusing lens array 2 to be tested, the maximum light intensity and the minimum light intensity at different positions in the image "column" direction of each column of lens units are determined;
[0062] The brightness uniformity corresponding to each column of lens units is determined based on the maximum value and the minimum value of the light intensity of the image plane corresponding to each column of lens units.
[0063] It should be noted that, as an example, the brightness uniformity on the image plane can be defined as: ΔE = [1-(I max -I min ) / (I max +I min )]×100%, where I max is the maximum light intensity of the lens unit measured, I min is the minimum value of the measured light intensity of the lens unit. In the embodiment of the present application, when determining the brightness uniformity of each column of lens units, the maximum and minimum values of the light intensity are obtained according to the light intensity data of the current column, and then the brightness uniformity of the lens unit in the column is determined by using a set calculation method according to the maximum and minimum values of the light intensity. This simplifies the brightness uniformity detection process and improves the efficiency of brightness uniformity detection.
[0064] In some possible embodiments, determining the brightness uniformity of the self-focusing lens array 2 to be tested according to the brightness uniformity corresponding to each column of lens units includes:
[0065] A brightness uniformity curve of the self-focusing lens array 2 to be tested is generated according to the brightness uniformity corresponding to each column of lens units.
[0066] It should be noted that brightness uniformity is usually only expressed as a percentage value. It is difficult to intuitively display the brightness uniformity of the self-focusing lens array 2 to be tested based on the value alone. Therefore, the brightness uniformity corresponding to each column of lens units is detected and the corresponding curve graph is generated, thereby improving the intuitiveness of the brightness uniformity index.
[0067] In the embodiment of the present application, by generating a brightness uniformity curve of the entire lens array according to the brightness uniformity of each column of lens units, the brightness uniformity of the entire lens array can be intuitively reflected, thereby improving the intuitiveness of the brightness uniformity index.
[0068] Please attend Figure 2 , the embodiment of the present application also provides a brightness uniformity detection system of a self-focusing lens array, including an optical platform, a target light source 1, a self-focusing lens array to be tested 2, a near-field optical detector 3 and a control device 4;
[0069] The target light source 1, the self-focusing lens array 2 to be measured and the near-field optical detector 3 can be movably connected to the optical platform respectively;
[0070] The control device 4 is used to implement a brightness uniformity detection method for any self-focusing lens array.
[0071] It should be noted that the target light source 1, the self-focusing lens array 2 to be tested, and the near-field optical detector 3 can be connected to the optical platform through a movable electric slide, and are electrically connected to the control device 4, so that the target light source 1, the self-focusing lens array 2 to be tested, and the near-field optical detector 3 can be controlled by the control device 4 and move relative to the optical platform within a certain range. It can be understood that the direction of movement includes but is not limited to lateral horizontal movement, longitudinal horizontal movement, and vertical movement. For example, the optical platform can be used as a reference to establish a spatial coordinate system, so that each component can move freely along the X, Y, and Z axes, respectively, and when moved to the set target detection position, each component can be controlled to remain relatively fixed with the optical platform. It should be noted that Figure 2 The self-focusing lens array 2 to be tested omits the lines connecting with the optical platform. The specific connection method can refer to the above method and be adaptively configured according to actual needs.
[0072] In an embodiment of the present application, a detection system corresponding to a brightness uniformity detection method of a self-focusing lens array is provided, comprising a target light source 1, a self-focusing lens array 2 to be tested, a near-field optical detector 3 and a control device 4. The control device 4 controls each detection component to move or fix, so that the near-field optical detector 3 collects light intensity data of the self-focusing lens array 2 to be tested, thereby enabling the brightness uniformity of the self-focusing lens array to be detected.
[0073] See also Figure 3 In some possible embodiments, the brightness uniformity detection system of the self-focusing lens array further includes an aperture 5; the aperture 5 is used to limit the outgoing light of the target light source 1 to light that is adapted to the shape of the self-focusing lens array 2 to be tested.
[0074] In the embodiment of the present application, the detection system further includes an aperture 5, which can focus the light from the light source onto the entire lens array, thereby improving the efficiency and accuracy of brightness uniformity detection.
[0075] Please continue to see Figure 3 In some possible embodiments, the brightness uniformity detection system of the self-focusing lens array may further include a homogenizing plate 6, for example, made of white acrylic, which may be connected to the optical platform via a support rod height adjuster to homogenize the light of the point light source into uniform outgoing light.
[0076] It should be noted that in the prior art, common optical systems often use imaging luminance meters to test brightness. It is a measuring instrument based on the principle of imaging to measure light. Its basic structure consists of a visually matched detector, an optical system, and a signal output processing system proportional to the brightness (or tristimulus value). The existing test scheme requires a relatively long distance between the test position and the lens to complete the relevant test. Therefore, it is suitable for brightness testing in the fields of road brightness, landscape lighting, instrument panel brightness, display brightness, light sources and light-emitting devices, movies and television, traffic signal signs, buildings, atmospheric luminosity, etc. The uniformity of brightness can only be measured by the difference in brightness distribution data on the measured image.
[0077] The above prior art has the following disadvantages:
[0078] 1. It is only suitable for measuring long-distance luminous surfaces, but not suitable for measuring lens arrays with an object distance of only a few millimeters;
[0079] 2. The lens of the equipment has a large diameter, which is suitable for measuring larger luminous surfaces, but not suitable for measuring smaller luminous surfaces. Measuring small luminous surfaces is easily affected by ambient light;
[0080] 3. The system test unit is candela, which means that the device is actually testing a light source, not the brightness on the illuminated image plane. Therefore, there is inaccuracy in the device test when positioning the image plane. The unit measured at the same time is candela, which means the luminous flux in a certain direction within a unit solid angle. For this, candela and watt cannot be directly converted. It is necessary to know the luminous flux (lumen) and luminous angle of the light source to convert the light intensity candela of the light source. Therefore, after the device measures the luminous flux candela at a position, it needs to be converted into light intensity for brightness uniformity detection, which is a cumbersome process.
[0081] In view of the problems existing in the above-mentioned prior art, the embodiment of the present application provides a brightness uniformity detection system for a self-focusing lens array. When the detection is performed based on the detection system, the light emitted by the target light source 1 at the object end passes through the aperture to form a rectangular narrow slit light (adapted to the self-focusing lens array 2 to be tested). After passing through the optical system (the self-focusing lens array 2 to be tested), the image side uses a near-field optical detector 3 on the image plane to sample the light intensity at different positions of the image plane corresponding to each column of lens units of the lens array in the vertical direction in a defined detection area. Then, according to the formula defined by the above uniformity, the brightness uniformity at different positions of the image plane corresponding to each vertical column of lens units can be obtained, and then the brightness uniformity index of the entire lens array can be determined. Various support rods and electric slides can be used in the entire system for position adjustment and successive detection of brightness indicators in the array direction.
[0082] Compared with the prior art, the embodiments of the present application have the following beneficial effects:
[0083] 1) The brightness uniformity index of the self-focusing lens array was tested;
[0084] 2) Achieved the testing of arrays with object-image distances as short as 1-2 mm;
[0085] 3) Directly measure the brightness uniformity at the image plane;
[0086] 4) Directly obtain brightness uniformity index without tedious conversion;
[0087] 5) It is possible to measure lens arrays with a single lens unit smaller than 1mm in diameter, or even 0.3mm (typical products on the market can be even smaller).
[0088] Please refer to Figure 4 , Figure 4 FIG. 1 is a block diagram showing a brightness uniformity detection device for a self-focusing lens array provided in some embodiments of the present application. It should be understood that the brightness uniformity detection device for the self-focusing lens array is similar to the above-mentioned Figure 1 Corresponding to the method embodiment, each step involved in the above method embodiment can be executed. The specific functions of the brightness uniformity detection device of the self-focusing lens array can be found in the description above. To avoid repetition, the detailed description is appropriately omitted here.
[0089] Figure 4 The brightness uniformity detection device of the self-focusing lens array includes at least one software function module that can be stored in a memory or solidified in the brightness uniformity detection device of the self-focusing lens array in the form of software or firmware, and the brightness uniformity detection device of the self-focusing lens array includes:
[0090] An image plane determination module 410 is used to determine a target image plane area where the target light source 1 passes through the self-focusing lens array 2 to be tested;
[0091] The light intensity acquisition module 420 is used to acquire the imaging light intensity data of the self-focusing lens array 2 to be tested by controlling the movement of the near-field optical detector 3 based on the target image plane area;
[0092] The uniformity determination module 430 is used to determine the brightness uniformity of the self-focusing lens array 2 to be tested according to the imaging light intensity data.
[0093] It can be understood that the above-mentioned device item embodiment corresponds to the method item embodiment of the present invention. The brightness uniformity detection device of a self-focusing lens array provided by the embodiment of the present invention can realize the brightness uniformity detection method of a self-focusing lens array provided by any method item embodiment of the present invention.
[0094] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the device described above can refer to the corresponding process in the aforementioned method, and will not be described in detail here.
[0095] like Figure 5 As shown, some embodiments of the present application provide an electronic device 500, which includes: a memory 510, a processor 520, and a computer program stored in the memory 510 and executable on the processor 520, wherein the processor 520 reads the program from the memory 510 through a bus 530 and executes the program to implement a method of any embodiment included in the brightness uniformity detection method of the self-focusing lens array as described above.
[0096] Processor 520 can process digital signals and can include various computing structures, such as complex instruction set computer structure, reduced instruction set computer structure, or a structure that implements a combination of multiple instruction sets. In some examples, processor 520 can be a microprocessor.
[0097] The memory 510 may be used to store instructions executed by the processor 520 or data related to the execution of instructions. These instructions and / or data may include codes for implementing some or all functions of one or more modules described in the embodiments of the present application. The processor 520 of the disclosed embodiment may be used to execute instructions in the memory 510 to implement the method shown above. The memory 510 includes a dynamic random access memory, a static random access memory, a flash memory, an optical memory, or other memory known to those skilled in the art.
[0098] Some embodiments of the present application further provide a computer-readable storage medium having a computer program stored thereon. The computer program is executed by a processor to execute the method described in the method embodiment.
[0099] Some embodiments of the present application further provide a computer program product, which, when executed on a computer, enables the computer to execute the method described in the method embodiment.
[0100] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.
[0101] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.
[0102] In addition, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
[0103] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.
[0104] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0105] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
[0106] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
Claims
1. A method for detecting brightness uniformity of a self-focusing lens array, characterized in that: include: Determine the target image plane area where the target light source passes through the self-focusing lens array to be tested; Based on the target image plane area, the imaging light intensity data of the self-focusing lens array to be tested is obtained by controlling the movement of a near-field optical detector; The brightness uniformity of the self-focusing lens array to be tested is determined according to the imaging light intensity data.
2. The method for detecting brightness uniformity of a self-focusing lens array according to claim 1, characterized in that: The method of obtaining imaging light intensity data of the self-focusing lens array to be tested by controlling the movement of the near-field optical detector comprises: The imaging light intensity of each lens unit corresponding to the position of the self-focusing lens array to be tested is obtained in sequence by controlling the movement of the near-field optical detector, as the imaging light intensity data of the self-focusing lens array to be tested.
3. The method for detecting brightness uniformity of a self-focusing lens array according to claim 2, characterized in that: The step of determining the brightness uniformity of the self-focusing lens array to be tested according to the imaging light intensity data comprises: Determine the brightness uniformity corresponding to each column of lens units according to imaging light intensity data at different positions of each column of lens units in the self-focusing lens array to be tested; The brightness uniformity of the self-focusing lens array to be tested is determined according to the brightness uniformity corresponding to each column of lens units.
4. The method for detecting brightness uniformity of a self-focusing lens array according to claim 3, characterized in that: The step of determining the brightness uniformity corresponding to each column of lens units according to imaging light intensity data at different positions of each column of lens units in the self-focusing lens array to be tested comprises: According to the imaging light intensity data at different positions of each column of lens units in the self-focusing lens array to be tested, the maximum light intensity and the minimum light intensity of the image plane corresponding to each column of lens units are determined; The brightness uniformity corresponding to each column of lens units is determined based on the maximum value and the minimum value of the light intensity of the image plane corresponding to each column of lens units.
5. The method for detecting brightness uniformity of a self-focusing lens array according to claim 3, characterized in that: The step of determining the brightness uniformity of the self-focusing lens array to be tested according to the brightness uniformity corresponding to each column of lens units includes: A brightness uniformity curve of the self-focusing lens array to be tested is generated according to the brightness uniformity corresponding to each column of lens units.
6. A brightness uniformity detection system for a self-focusing lens array, characterized in that: It includes an optical platform, a target light source, a self-focusing lens array to be tested, a near-field optical detector and a control device; The target light source, the self-focusing lens array to be tested and the near-field optical detector can be movably connected to the optical platform respectively; The control device is used to implement the brightness uniformity detection method of the self-focusing lens array as described in any one of claims 1 to 5.
7. The brightness uniformity detection system of the self-focusing lens array according to claim 6, characterized in that: It also includes an aperture; the aperture is used to limit the outgoing light of the target light source to a light that is adapted to the shape of the self-focusing lens array to be tested.
8. A brightness uniformity detection device for a self-focusing lens array, characterized in that: include: An image plane determination module, used to determine the target image plane area of the target light source passing through the self-focusing lens array to be tested; A light intensity acquisition module, used to acquire imaging light intensity data of the self-focusing lens array to be tested by controlling the movement of a near-field optical detector based on the target image plane area; A uniformity determination module is used to determine the brightness uniformity of the self-focusing lens array to be tested according to the imaging light intensity data.
9. A computer program product, characterized in that The computer program product includes a computer program, wherein the computer program, when executed by a processor, can implement the brightness uniformity detection method of the self-focusing lens array described in any one of claims 1-5.
10. An electronic device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor can implement the brightness uniformity detection method of the self-focusing lens array as described in any one of claims 1 to 5 when executing the program.