CN216017031U - Light source and camera module stray light detection system - Google Patents
Light source and camera module stray light detection system Download PDFInfo
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- CN216017031U CN216017031U CN202120611331.4U CN202120611331U CN216017031U CN 216017031 U CN216017031 U CN 216017031U CN 202120611331 U CN202120611331 U CN 202120611331U CN 216017031 U CN216017031 U CN 216017031U
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Abstract
The utility model discloses a light source and camera module stray light detection system, which is used for camera module stray light detection. The light source includes: the light source comprises a light source substrate and a plurality of sub light sources, wherein the plurality of sub light sources are all arranged on the light source substrate, and the plurality of sub light sources comprise at least two sub light sources in different shapes. The light source provided by the utility model is convenient for reducing the difficulty of stray light identification and analysis in stray light detection of the detection camera module, is easy to track the initial point of light reflection, can improve the efficiency of stray light analysis, and saves the test and analysis time.
Description
Technical Field
The utility model belongs to the technical field of camera detection, and particularly relates to a light source and camera module stray light detection system.
Background
In the related art, in order to detect the camera veiling glare, as shown in fig. 1, a single point light source mode is generally adopted, a single point light source 1 'is rotated from 0 degree to 180 degrees around a camera module 2' to be detected, and an image is collected, the collected light source image is shown in fig. 2, and the existence of the veiling glare is determined manually based on a series of images shown in fig. 2.
The camera stray light detection method needs to manually judge whether stray light exists or not, and is low in efficiency and precision. In some technologies, a multi-point light source is used for detecting stray light of the camera module, but it is difficult to determine where stray light is reflected at the bottom, and the position of stray light reflection cannot be determined.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a light source, which is used in the stray light detection of a camera module, and can track the starting point of stray light reflection, save the stray light testing and analyzing time, and improve the stray light detection efficiency.
The second objective of the present invention is to provide a camera module stray light detection system.
In order to solve the above problem, an embodiment of a first aspect of the present invention provides a light source for camera module stray light detection, including: a light source substrate; the plurality of sub light sources are all arranged on the light source substrate, the plurality of sub light sources comprise at least two sub light sources in different shapes, and the sub light sources in different shapes are arranged adjacently.
The light source comprises a light source substrate and a plurality of sub-light sources arranged on the light source substrate, and for the camera module comprising the prism assembly, a multipoint light source is adopted, so that the center and the outside of the light source can be distinguished, and convenience is provided for analyzing the light reflection inside the camera module in more detail; the plurality of sub light sources comprise sub light sources with at least two shapes, the sub light sources with different shapes are arranged adjacently, when the camera module is subjected to stray light detection, light source images are collected, imaging is carried out on the basis of the sub light sources with different shapes, and the times and the starting point of stray light reflection can be tracked according to the shapes of the light sources; and stray light detection is carried out on the camera module based on the light source, automatic realization can be realized through image analysis, and compared with manual analysis, the testing and analyzing time is saved, and the testing efficiency is improved.
In some embodiments of the present invention, the light source substrate is a uniform light emitting plate; the plurality of sub-light sources further comprise a test graphic card, the test graphic card covers the uniform light-emitting plate, through holes in at least two shapes are formed in the test graphic card, and the emitted light of the uniform light-emitting plate passes through the through holes to form the plurality of sub-light sources.
In some embodiments of the present invention, the plurality of sub light sources are light emitting light sources and are embedded or adhered on the light source substrate.
In some embodiments of the present invention, the plurality of sub light sources are LED lamps.
In some embodiments of the present invention, the shapes of the plurality of sub-light sources include at least two of a circle, a square, a star, a triangle, and a diamond.
In some embodiments of the present invention, the plurality of sub light sources are arranged in an array in which the sub light sources having different shapes are adjacently arranged.
In some embodiments of the utility model, the array is a 5 x 7 array.
In order to achieve the above object, a camera module stray light detection system according to an embodiment of the second aspect of the present invention includes: the light source of any of the above embodiments; and the stray light analysis device is connected with the camera module to be tested and used for acquiring the light source image of the light source acquired by the camera module to be tested and carrying out stray light analysis according to the light source image.
According to the camera module stray light detection system provided by the embodiment of the utility model, the light source of the embodiment is adopted, wherein the light source comprises a plurality of sub light sources with at least two shapes, and when the camera module stray light is detected, the times and the starting point of stray light emission can be tracked according to the shape of the light source; and the stray light detection of the camera can be automatically realized through the light source image analysis by adopting the light source, manual intervention is not needed, the test and analysis time is saved, and the test efficiency is improved.
In some embodiments of the present invention, the camera module under test comprises a prism assembly. For the camera module comprising the prism assembly, the plurality of sub light sources are adopted, the interior and the exterior of the sub light sources can be distinguished, and therefore support can be provided for analyzing the internal information of the sub light sources in more detail.
In some embodiments of the present invention, the camera module to be tested further includes: and the visual angle adjusting platform is used for placing the camera module and adjusting the visual angle of the light source image acquired by the camera module. The visual angle adjusting table is adopted, so that visual angle adjustment can be facilitated when stray light detection is carried out, and the testing efficiency is improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a camera module stray light test using a single-point light source in the related art;
FIG. 2 is a light source image obtained after a single-point light source is photographed by a camera module in the related art;
FIG. 3 is a schematic view of a light source of one embodiment of the present invention;
FIG. 4 is a test chart for one embodiment of the present invention;
FIG. 5 is a schematic diagram of a sub-light source according to one embodiment of the utility model;
FIG. 6 is a block diagram of a camera module stray light detection system of one embodiment of the present invention;
FIG. 7 is a schematic diagram of a camera module stray light detection system according to one embodiment of the present invention;
FIG. 8 is a block diagram of a camera module stray light detection system according to another embodiment of the present invention;
fig. 9 is a light source image obtained after the camera module in the related art takes a multi-point light source.
Reference numerals:
in the related art:
the device comprises a single-point light source 1 'and a camera module 2';
in the present invention:
the camera module stray light detection system 4 and the camera module to be detected 5;
a light source 1, a stray light analysis device 2 and a visual angle adjusting table 3;
a light source substrate 10, a sub-light source 20;
a test chart 100;
a through hole 101.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
In the related art, the single-point light source is adopted to detect stray light of the camera module, whether the stray light exists or not needs to be analyzed manually, and the efficiency and the precision are low. And because the camera module comprises a plurality of lenses and/or prisms, when stray light detection is carried out, light rays of the light source are incident to the camera module, the incident light rays can be reflected for multiple times among the lenses and/or prisms, and each reflection can form a stray light image near the light source in the light source image. The sharpness of the stray light image is gradually reduced as the number of reflections increases, and it becomes more and more difficult to track the starting point of the stray light reflection.
In order to solve the above problems, an embodiment of the present invention proposes a light source for camera module stray light detection, and the light source according to an embodiment of the present invention is described below with reference to fig. 3 to 5.
FIG. 3 is a schematic diagram of a light source according to one embodiment of the utility model. As shown in fig. 3, the light source 1 of the present invention includes a light source substrate 10 and a plurality of sub-light sources 20.
The light source substrate 10 may be a carrier of the sub-light source 20 for supporting and fixing the sub-light source 20, or the light source substrate 10 itself is a light emitting body. The light source substrate 10 may have a solid structure with a certain shape, area and thickness, and the shape may be a rectangular parallelepiped, a cube, or the like, and the material of the light source substrate 10 may be selected according to actual needs, and the light source substrate 10 is not particularly limited herein.
The plurality of sub-light sources 20 are all disposed on the light source substrate 10, as shown in FIG. 3, the plurality of sub-light sources 20 include sub-light sources 1 to N, where N ≧ 2. Adopt a plurality of sub-light sources 20, to the camera module including prism subassembly, from prism subassembly's characteristic, because the difference of the X axle of prism and the direction rate of rotation of Y axle, so there is the difference in the change of central part and peripheral part, consequently compare in adopting single-point light source, set up a plurality of sub-light sources and adopt the multiple spot light source promptly, can distinguish the center and the edge of light source to carry out more detailed analysis for the information to camera module internal light reflection and provide convenience.
The plurality of sub-light sources 20 include at least two sub-light sources 20 with different shapes, that is, the plurality of sub-light sources 20 are not completely the same in shape, and the sub-light sources 20 with the same shape are adjacently arranged. The sub-light sources 20 with different shapes are adopted, when the stray light detection is carried out, the light source images are collected, and due to the fact that the shapes of the light sources are different, even if the N times of reflection are carried out, the emitting times and the starting point can be easily tracked through the shapes of the stray light.
In the embodiment, the shape of the sub-light sources 20 is preferably relatively different, and may be, for example, a circle, a square, a star, a triangle, a diamond, etc., and the shape of the light is convenient for distinguishing and distinguishing when the stray light is analyzed after the light source image is acquired. The plurality of sub-light sources 20 may be disposed on one surface of the light source substrate 10, or may be arranged on the light source substrate 10 at different regularity, intervals, or in a predetermined order, which is not particularly limited herein.
In the embodiment of the present invention, the light source 1 may be used for stray light detection of the camera module, and when the stray light detection is performed, the camera module photographs the light source 1 at different viewing angles to obtain a light source image including a plurality of sub-light sources 20, and since the shapes of the sub-light sources 20 are different, the corresponding sub-light source image and the shapes of the plurality of stray lights are also different, and the number of times and the starting point of stray light reflection can be tracked according to the shapes of lights.
According to the embodiment of the utility model, the light source 1 comprises a light source substrate and a plurality of sub-light sources arranged on the light source substrate, and for the camera module comprising the prism assembly, a multipoint light source is adopted, so that the center and the edge of the light source can be distinguished, and convenience is provided for analyzing the light reflection inside the camera module in more detail; the plurality of sub light sources comprise sub light sources with at least two shapes, the sub light sources with different shapes are arranged adjacently, when the camera module is subjected to stray light detection, light source images are collected, imaging is carried out on the basis of the sub light sources with different shapes, and the times and the starting point of stray light reflection can be tracked according to the shapes of the light sources; and stray light detection is carried out on the camera module based on the light source, automatic realization can be realized through image analysis, and compared with manual analysis, the testing and analyzing time is saved, and the testing efficiency is improved.
In some embodiments of the present invention, when the light source substrate 10 itself is a light emitter, the light source substrate 10 may be configured as a uniform light emitting plate. The plurality of sub-light sources 20 further include a test card 100, the test card 100 covers the uniform light emitting plate, through holes of at least two shapes are formed on the test card 100, and the emitted light of the uniform light emitting plate passes through the through holes to form the plurality of sub-light sources 20.
For example, taking a rectangular uniform light-emitting panel as an example, fig. 4 shows a test card according to an embodiment of the utility model, as shown in fig. 4, the test card 100 is rectangular in shape, and the test card 100 may be made of opaque material. The test card 100 is provided with a through hole 101, and the shape of the through hole 101 may include at least two shapes, such as a circle, a square, a star, a triangle, a diamond, and the like. The test card 100 is covered on the light emitting surface of the uniform light emitting panel, and the gap between the test card 100 and the uniform light emitting panel is set to be small, so that the sub-light sources 20 of different shapes can be formed when the emitted light of the uniform light emitting panel passes through the through holes 101 of different shapes.
In the embodiment of the present invention, the light source 1 is constructed by using the uniform light emitting panel and the test card 100 provided with the plurality of through holes 101, and thus, the manufacturing is simple and the cost is low.
In other embodiments of the present invention, fig. 5 is a schematic diagram of a light source according to an embodiment of the present invention, and as shown in fig. 5, the plurality of sub-light sources 20 may be light emitting light sources themselves and are embedded or adhered on the light source substrate 10. In the present embodiment, the light source substrate 10 plays a role of supporting and fixing, that is, the light source substrate 10 is provided as a carrier capable of mounting the sub-light sources 20, and is used for fixing the sub-light sources 20. Alternatively, if necessary, a wire or the like may be provided inside the light source substrate 10 to connect the light-emitting source on the light source substrate 10 and the power supply.
As described above, when the plurality of sub light sources 20 are light-emitting light sources provided on the light source substrate 10, the plurality of sub light sources 20 may be provided as LED lamps. Wherein, single LED lamp is the pointolite that can give out light, can set up a plurality of LED lamp combination into the luminous light source of different shapes and size, and the practicality is stronger and the cost is lower.
In the embodiment of the present invention, the sub-light sources 20 with different shapes are arranged in a staggered manner, wherein, as shown in fig. 5, the shapes of the plurality of sub-light sources 20 may include at least two of circular, square, star, triangular and diamond, for example, circular and square sub-light sources 20 are used, or circular, square and diamond sub-light sources 20 are used, or star, diamond and circular sub-light sources 20 are used. Preferably, the shape of each sub-light source 20 is different.
As described above, the sub-light sources 20 having the shapes of circle, square, star, triangle, diamond, etc. are adopted, and the shape difference is large, so that the parasitic light having the same shape can be directly obtained through analysis in the light source image, and the number of times and the starting point of the parasitic light reflection are tracked based on the light shape, thereby improving the parasitic light analysis efficiency and saving the parasitic light analysis time.
In some embodiments of the present invention, as shown in fig. 5, the plurality of sub-light sources 20 are arranged in an array, and the sub-light sources 20 having different shapes in the array are adjacently arranged. For example, the sub-light sources 20 in the shapes of circle, square, star, triangle, diamond, etc. are arranged in a staggered manner, so that the shapes of the sub-light sources 20 surrounding any one sub-light source 20 are different, and when stray light is analyzed in a light source image, the reflection position of the stray light can be better distinguished according to the shape of the stray light, the stray light analysis efficiency can be improved, and the stray light analysis time can be saved.
In some embodiments of the present invention, as shown in fig. 5, the array of the plurality of sub light sources 20 is a 5 × 7 array, and 35 sub light sources 20 are arranged in total, so that after the camera module shoots, a light source image including the plurality of sub light sources 20 is obtained, a clearer sub light source 20 image and stray light can be selected for analysis, and the stray light formed by the sub light sources 20 at different positions can be analyzed, so as to distinguish characteristics of the stray light in the central area and/or the edge area of the light source image in more detail, thereby more accurately obtaining information reflected by the light in the camera module.
The present invention also provides a camera module stray light detection system, which is described below with reference to fig. 6 to 9 according to an embodiment of the present invention.
Fig. 6 is a block diagram of a camera module stray light detection system according to an embodiment of the present invention, wherein, as shown in fig. 6, the camera module stray light detection system 4 at least includes a light source 1 and a stray light analysis device 2.
The light source 1 is used for providing a plurality of sub-light sources 20 with various shapes for the camera module 5 to be tested. For example, a plurality of sub light sources 20 are arranged in a matrix form, and the sub light sources 20 different in shape are adjacently disposed in the array, thereby acquiring images with the shapes of the sub light sources 20 and the shape of the flare having different shapes.
The stray light analysis device 2 is connected with the camera module 5 to be tested, the stray light analysis device 2 can be a computer device or a special graphic processing device, and the like, and the stray light analysis device 2 is used for acquiring a light source image of the light source 1 collected by the camera module 5 to be tested and performing stray light analysis according to the light source image.
Specifically, as shown in fig. 7, a schematic diagram of a camera module stray light detection system according to an embodiment of the present invention is shown. When the camera module 5 to be detected is subjected to stray light detection, the camera module 5 to be detected collects an image of the light source 1 at an initial visual angle, and obtains a light source image including a plurality of sub-light sources 20, so that the visual angle of the camera to be detected is adjusted to 0 degree, 45 degrees or 90 degrees, for example, and light source images at various angles are obtained. The veiling glare detection device 2 can perform gray value calculation on the light source image after acquiring the light source image, screen veiling glare according to a preset threshold value, detect veiling glare in different shapes, record the quantity of veiling glare in the same shape within a certain range, perform data analysis according to veiling glare information, acquire an analysis result and the like.
According to the camera module stray light detection system 4 of the embodiment of the utility model, the light source 1 of the above embodiment is adopted, wherein a plurality of sub light sources 20 with at least two shapes are included, the plurality of sub light sources 20 are arranged in a matrix form, and the sub light sources 20 with different shapes are adjacently arranged in the array, so that images with different shapes of the sub light sources 20 and different stray light shapes are acquired. The stray light analysis device 2 can acquire the light reflection times of the corresponding sub-light source 20 according to the sub-light source image and the shape and the quantity of the stray light, and the starting point of multiple reflection of the light is acquired by comparing and analyzing the definition of a plurality of stray lights, so that the analysis efficiency of the stray light can be improved, and the analysis time of the stray light is saved.
In some embodiments of the present invention, as shown in fig. 7 and 8, fig. 8 is a block diagram of a camera module stray light detection system according to another embodiment of the present invention. The camera module stray light detection system 4 further comprises a visual angle adjusting table 3, and the visual angle adjusting table 3 is used for placing a camera module and adjusting the visual angle of the camera module for collecting the light source image. For example, visual angle adjusting station 3 can set up to a platform that can place the camera module 5 that awaits measuring to this platform can use the center pin of the vertical direction of platform to rotate as the axle, and visual angle adjusting station 3 can be used to manual regulation, also can automatically regulated. The camera module 5 to be tested can be driven to rotate by controlling the rotation of the visual angle adjusting platform 3. For another example, a rotation scale line or an angle may be provided on the viewing angle adjusting stage 3. Can control the camera module 5 that awaits measuring and adjust to predetermineeing the angle in testing process, improve the regulation precision, the operation of being convenient for.
In the embodiment of the present invention, the camera module 5 to be tested includes a prism assembly, such as a periscopic camera assembly. In the shooting process, due to the difference of the rotation rates of the prism mirror surfaces in the X-axis direction and the Y-axis direction, the variation amount of the stray light at the central part and the edge part of the stray light image is also different. Fig. 9 is a light source image obtained after a central camera module in the related art shoots a multipoint light source. Wherein, A is an edge area light source image, A1 is a light spot formed when the first reflection occurs, A2 is a light spot formed when the second reflection occurs, and A3 is a light spot formed when the third reflection occurs. B is the central region light source image, B1 is the spot formed when the first reflection occurs, B2 is the spot formed when the second reflection occurs, and B3 is the spot formed when the third reflection occurs. As shown in fig. 9, as the number of times of light reflection increases, stray light becomes less conspicuous, and it is difficult to directly distinguish stray light in the first reflection, the second reflection, the third reflection, and the like, and it becomes more difficult to trace the start point of light reflection, which makes it difficult to analyze stray light in the light source image based on the transmission characteristics of light in the prism.
In the embodiment of the present invention, by setting the multi-point light source as the plurality of sub-light sources 20 with different shapes, the sub-light sources 20 with different shapes are arranged in a staggered manner when performing the stray light detection on the lens of the camera module 5 to be detected. In the detection process, even if multiple reflections occur, after the camera module 5 to be detected acquires the light source image, the stray light in the central area and/or the edge area of the light source image can be accurately distinguished, the analysis efficiency of the stray light can be improved, and the test and analysis time can be saved.
The light source 1 according to the embodiment of the present invention is used for detecting lens stray light of the camera module 5 to be detected, and the plurality of sub light sources 20 including at least two shapes are arranged, and the plurality of sub light sources 20 are arranged in a matrix form, and the sub light sources 20 with different shapes are adjacently arranged in the array. The stray light analysis method has the advantages that when the stray light is analyzed in the light source image, the stray light can be better analyzed according to the shape of the stray light, so that the starting point of light reflection can be easily tracked, the stray light analysis efficiency can be improved, and the stray light analysis time can be saved.
Other configurations and operations of the camera module stray light detection system 4 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. A light source for camera module stray light detection, the light source comprising:
a light source substrate;
the plurality of sub light sources are all arranged on the light source substrate, the plurality of sub light sources comprise at least two sub light sources in different shapes, and the sub light sources in different shapes are arranged adjacently.
2. The light source in accordance with claim 1,
the light source substrate is a uniform light-emitting plate;
the plurality of sub-light sources further comprise a test graphic card, the test graphic card covers the uniform light-emitting plate, through holes in at least two shapes are formed in the test graphic card, and the emitted light of the uniform light-emitting plate passes through the through holes to form the plurality of sub-light sources.
3. The light source of claim 1, wherein the plurality of sub-light sources are light emitting sources and are mounted on or adhered to the light source substrate.
4. The light source in accordance with claim 3, wherein the plurality of sub-light sources are LED lights.
5. The light source in accordance with claim 1, wherein the plurality of sub-light sources have a shape comprising at least two of a circle, a square, a star, a triangle, and a diamond.
6. A light source as claimed in any one of claims 1 to 5, wherein the plurality of sub-light sources are arranged in an array in which the sub-light sources of different shapes are arranged adjacent to each other.
7. The light source in accordance with claim 6, wherein the array is a 5 x 7 array.
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| CN116170575A (en) * | 2022-12-14 | 2023-05-26 | 中科慧远视觉技术(北京)有限公司 | Light-emitting assembly, detection device and detection control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116170575A (en) * | 2022-12-14 | 2023-05-26 | 中科慧远视觉技术(北京)有限公司 | Light-emitting assembly, detection device and detection control method |
| CN116170575B (en) * | 2022-12-14 | 2023-11-07 | 中科慧远视觉技术（洛阳）有限公司 | Light-emitting assembly, detection device and detection control method |
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