CN116170575B

CN116170575B - Light-emitting assembly, detection device and detection control method

Info

Publication number: CN116170575B
Application number: CN202211607476.2A
Authority: CN
Inventors: 张正涛; 吴搏; 吕晓云; 张武杰
Original assignee: Zhongke Huiyuan Intelligent Equipment Guangdong Co ltd; Casi Vision Technology Luoyang Co Ltd; Casi Vision Technology Beijing Co Ltd
Current assignee: Zhongke Huiyuan Intelligent Equipment Guangdong Co ltd; Casi Vision Technology Luoyang Co Ltd; Casi Vision Technology Beijing Co Ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-11-07
Anticipated expiration: 2042-12-14
Also published as: CN116170575A

Abstract

The application discloses a light emitting component, a detection device and a detection control method, which are mainly used for solving the problem that a single detection light source cannot adapt to various detection requirements. The application provides a light emitting assembly comprising: the camera module comprises a support body, a camera module and a camera module, wherein the support body comprises a top end opening, a bottom end opening and a light channel communicated with the top end opening and the bottom end opening; the light sources are arranged in the light channel and connected with the support main body, the propagation directions of the light rays of the light sources are different, and the light rays of the light sources are emitted from the bottom end opening, so that the at least two light sources provide test light with different angles for the camera module. The application is mainly used for detecting the camera module to provide test light.

Description

Light-emitting assembly, detection device and detection control method

Technical Field

The present application relates to the field of machine vision, and in particular, to a light emitting assembly, a detection device, and a detection control method.

Background

With the continuous development of intelligent image processing technology, camera modules (CCM, camera Compact Module) are increasingly used in fields of medical treatment, ATM, road monitoring, home monitoring, mobile phone module cameras of precision equipment, etc., and the camera modules mainly comprise a protective film, a lens group, a sensor, an optical filter, etc., and the camera modules collect light rays and obtain images by processing electric signals. In order to ensure the imaging quality of the camera module, the camera module camera needs to be detected, wherein the defect detection on the appearance of the camera module is very important.

The appearance detection of the camera module usually adopts visual detection or optical detection, acquires images of the camera module in an illumination environment through the cooperation of a camera and a light source, and distinguishes good products from defective products through algorithm analysis and comparison. However, the light source in the prior art can only provide light rays of a single angle for the camera module, only can acquire images of the camera module under a single light ray environment, but for camera modules of different styles and different models, the defect positions of the camera modules are different, light rays of various angles are required to be irradiated to show the defect positions, the single light ray environment cannot meet the requirements of diversified light ray environments, various light sources are required to be replaced according to the detection requirements of the camera module, the universality of the light sources is poor, the detection process is long in period, the operation is complex, and the cost is high.

Disclosure of Invention

In view of the above, the present application provides a light source, a detection device and a detection control method, which are mainly used for solving the problem that a single detection light source cannot adapt to multiple detection requirements.

In order to achieve the above purpose, the present application mainly provides the following technical solutions:

in one aspect, the present application provides a light emitting assembly for providing test light for detection of a camera module, the light emitting assembly comprising:

the camera module comprises a support body (100), wherein the support body (100) comprises a top end opening (101), a bottom end opening (102) and a light ray channel communicated with the top end opening (101) and the bottom end opening (102), and the bottom end opening (102) is used for being opposite to the camera module;

the light sources are arranged in the light channel and are connected with the supporting main body (100), the propagation directions of the light rays of the light sources are different, and the light rays of the light sources are emitted from the bottom end opening (102) so that the light sources provide test light with different angles for the camera module.

The supporting main body (100) comprises a central axis, the centers of the top end opening (101) and the bottom end opening (102) are positioned on the central axis, the light channels are symmetrical relative to the central axis, and the included angles between the light rays of different light sources and the central axis are different.

The light source comprises a plurality of point light sources which are circumferentially arranged on the inner wall of the light channel around the central axis;

the point light source is an LED lamp bead;

or the light source comprises at least two sub-light sources which are symmetrically arranged relative to the central axis, and any sub-light source is circumferentially arranged along the inner wall of the light channel.

The light channel comprises at least two light sources, wherein the at least two light sources comprise a side light source (200) and a flat top light source (300), the inner wall of the light channel comprises a side mounting surface (110) and a flat top mounting surface (120), the side mounting surface (110) is closer to the bottom end opening (102) than the flat top mounting surface (120), the flat top mounting surface (120) is perpendicular to the central axis, and the top end opening (101) is positioned on the flat top mounting surface (120);

the side light source (200) is arranged on the side mounting surface (110) to provide test light for the camera module from an oblique direction, and the flat top light source (300) is arranged on the flat top mounting surface (120) to provide test light for the camera module from a central axis direction.

Wherein the side light source (200) comprises a first annular light source (210) and a second annular light source (220), and the side mounting surface (110) comprises a first annular side surface (111) and a second annular side surface (112);

the second annular side surface (112) is positioned between the first annular side surface (111) and the flat top mounting surface (120), the second annular side surface (112) is closer to the central axis than the first annular side surface (111), and the included angle between the second annular side surface (112) and the central axis is larger than the included angle between the first annular side surface (111) and the central axis;

The first annular light source (210) is arranged on the first annular side face (111), and the second annular light source (220) is arranged on the second annular side face (112), so that the first annular light source (210) and the second annular light source (220) respectively provide test light for the camera module by different inclination angles.

Wherein, the included angle between the light ray of the first annular light source (210) and the central axis is more than or equal to 70 degrees and less than or equal to 90 degrees;

the included angle between the light rays of the second annular light source (220) and the central axis is more than or equal to 50 degrees and less than or equal to 70 degrees.

Wherein the light emitting assembly further comprises a first light homogenizing plate (500), the first light homogenizing plate (500) is connected with the inner wall of the light channel and is opposite to the second annular side surface (112) and the second annular light source (220) for uniformly projecting the light of the second annular light source (220)

The flat top light source (300) comprises a first annular flat top light source (310) and a second annular flat top light source (320), and a first annular top groove (121) and a second annular top groove (122) are arranged on the flat top mounting surface (120);

the second annular top groove (122) is positioned outside the first annular top groove (121);

the first annular flat-top light source (310) is arranged in the first annular top groove (121), and the second annular flat-top light source (320) is arranged in the second annular top groove (122), so that the first annular flat-top light source (310) and the second annular flat-top light source (320) respectively provide test light for the camera module in different projection ranges.

The light emitting assembly further comprises a second light homogenizing plate, wherein the second light homogenizing plate is arranged in the first annular top groove (121) and/or the second annular top groove (122) and is opposite to the first annular flat-top light source (310) and/or the second annular flat-top light source (320) and used for uniformly projecting light rays of the first annular flat-top light source (310) and/or the second annular flat-top light source (320).

Wherein, the at least two light sources further comprise dome light sources (400), the inner wall of the light path further comprises a dome surface (130) and an upper mounting surface (140), the dome surface (130) and the upper mounting surface (140) are positioned between the side mounting surface (110) and the flat top mounting surface (120), and the upper mounting surface (140) is closer to the side mounting surface (110) than the dome surface (130);

the round top surface (130) is an arc surface, the round top surface (130) gradually converges in the direction of approaching the flat top mounting surface (120), and the upper mounting surface (140) faces the round top surface (130);

the dome light source (400) is arranged on the upper mounting surface (140), and light rays of the dome light source (400) are projected to the dome surface (130) and reflected by the dome surface (130) to provide uniform test light for the camera module.

The dome light source (400) comprises at least two dome sub-light sources, the side light source (200) comprises at least two side sub-light sources, the number of the dome sub-light sources is the same as that of the side sub-light sources, and the dome sub-light sources and the side sub-light sources are in one-to-one correspondence in a direction close to the bottom end opening (102).

Wherein the dome surface (130) is a spherical surface, and the radius of the dome surface (130) is more than or equal to 85 mm and less than or equal to 100 mm;

and/or, the included angle between the light rays of the dome light source (400) and the central axis is greater than or equal to 50 degrees and less than or equal to 80 degrees.

Wherein, the light emitting component further includes: and a coaxial illumination light source (600), wherein the coaxial illumination light source (600) is arranged at the top end opening (101), and the coaxial illumination light source (600) is used for generating light rays coaxial with the central axis a.

Wherein the coaxial illumination light source (600) comprises a housing (610), an array light source (620), a diffuser plate (630) and a semi-transparent lens (640);

the shell (610) comprises an upper opening and a lower opening, the upper opening is opposite to the lower opening, the lower opening is opposite to the top opening (101), the array light source (620) is arranged on one side in the shell (610), light rays of the array light source (620) are parallel to the upper opening, the semi-transparent lens (640) is arranged in the shell (610) and opposite to the upper opening, an included angle of 45 degrees is formed between the semi-transparent lens (640) and the light rays of the array light source (620), and the diffusion plate (630) is arranged between the semi-transparent lens (640) and the array light source (620);

after passing through the diffusion plate (630) and the semi-transparent lens (640), the light rays of the array light source (620) are projected to the camera module in parallel, and the reflected light of the camera module is emitted from the upper opening after passing through the semi-transparent lens (640).

In another aspect, the present application further provides a detection device for detecting a camera module, including any one of the light emitting assemblies, and

the image acquisition assembly (700), the supporting assembly (800) and the bearing platform (900), wherein the supporting assembly (800) is respectively connected with the bearing platform (900), the image acquisition assembly (700) and the light-emitting assembly, and a lens of the image acquisition assembly (700) is opposite to the top opening (101);

the bearing platform (900) is used for connecting the camera module, and test light enters the image acquisition assembly (700) after being reflected by the camera module, so that the image acquisition assembly (700) acquires a test chart of the camera module.

In still another aspect, the present application further provides a detection control method, applied to the foregoing detection apparatus, where the detection control method includes:

sequentially powering the at least two light sources so that the at least two light sources sequentially generate test light;

the image acquisition component is controlled to sequentially acquire test patterns of the camera module under each test light;

simultaneously powering at least two light sources such that the at least two light sources together produce a superimposed test light;

and controlling the image acquisition component to acquire a test chart of the camera module under the superposition test light.

Wherein the at least two light sources comprise a first annular light source and a second annular light source;

Sequentially powering the at least two light sources such that sequentially generating test light by the at least two light sources comprises:

supplying power to a first annular light source, wherein the first annular light source provides first dark field illumination for the camera module;

powering a second annular light source, the second annular light source providing second darkfield illumination for the camera module;

the control image acquisition component sequentially acquires the test patterns of the camera module under each test light, and the control image acquisition component comprises:

the image acquisition component is controlled to acquire a first profile contrast test chart of the camera module when the camera module is illuminated in a first dark field;

and controlling the image acquisition component to acquire a test chart of a second contour contrast of the camera module when the second dark field is illuminated.

Wherein the at least two light sources comprise a first annular flat top light source and a second annular flat top light source;

powering a first annular flat-top light source, wherein the first annular flat-top light source provides small-breadth illumination for the camera module;

powering a second annular flat-top light source, wherein the second annular flat-top light source provides large-breadth illumination for the camera module;

The method comprises the steps of controlling an image acquisition component to acquire a first vertical illumination test chart of a camera module when a small-format illumination is performed;

the control image acquisition component acquires a second type of vertical illumination test chart of the camera module when the large-format illumination is performed.

Wherein the at least two light sources comprise dome light sources;

powering a dome light source that provides diffuse light illumination of the full spatial area for the camera module;

and controlling the image acquisition component to acquire diffuse reflection light measurement patterns of the camera module when the diffuse light of the whole space area is illuminated.

Wherein the at least two light sources comprise coaxial illumination light sources;

supplying power to the coaxial illumination light source, wherein the coaxial illumination light source provides coaxial epi-illumination for the camera module;

the control image acquisition component acquires a uniform test pattern of the camera module during coaxial falling-type illumination.

Wherein the at least two light sources comprise a first annular light source, a second annular light source, a dome light source and a coaxial illumination light source;

simultaneously powering at least two light sources such that the at least two light sources collectively produce a superimposed test light comprises:

simultaneously supplying power to the first annular light source and the second annular light source, and superposing light rays of the first annular light source and the second annular light source to provide first superposition test light for the camera module;

simultaneously supplying power to the dome light source and the coaxial illumination light source, and superposing light rays of the dome light source and the coaxial illumination light source to provide second superposition test light for the camera module;

the control image acquisition component acquires a test chart of the camera module under the superposition test light, and the control image acquisition component comprises:

the image acquisition component is controlled to acquire a test pattern of first superposition test light when the camera module is in the first superposition test light;

and controlling the image acquisition component to acquire a test pattern of the second superposition test light when the camera module is in the second superposition test light.

According to the light-emitting assembly, the detection device and the detection control method, at least two light sources are arranged on the support main body, and the light sources are used for providing test light with different angles for the camera module, so that multiple light environments are provided for the camera module. In the prior art, in the optical detection of the camera module, the light source can only provide light of a single angle for the camera module, only can acquire images of the camera module under a single light environment, but for camera modules of different styles and different models, the defect positions of the camera modules are different, the single light environment cannot meet the requirements of diversified light environments, and various light sources are required to be replaced according to the detection requirements of the camera module, so that the universality of the light sources is poor, the detection process is long in period, the operation is complex, and the cost is high. Compared with the prior art, in the document, the supporting body is positioned above the camera module, at least two light sources are arranged in the light channel and irradiate the camera module through the bottom opening, and as the propagation directions of the light rays of the light sources are different, when a single light source is started or a plurality of light source combinations are started simultaneously, test light with different angles can be provided for the camera module, namely different light environments are provided for the camera module, the detection process is realized, the different positions of the camera module can be highlighted without changing the light sources, the characteristics of the surface of the camera module are more comprehensive, the device is applicable to detection of various camera modules, complicated operation of changing the light sources in the detection process is avoided, and the detection efficiency is higher.

Drawings

Fig. 1 is a schematic perspective view of a light emitting assembly according to an embodiment of the present application;

fig. 2 is a schematic cross-sectional structure diagram of a light emitting assembly in a central axis direction according to an embodiment of the present application;

fig. 3 is a schematic perspective view of another light emitting device according to an embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of a support body according to an embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of a support body according to an embodiment of the present application;

fig. 6 is a schematic structural view of a support body according to an embodiment of the present application at a third view angle;

fig. 7 is a schematic structural diagram of a detection device according to an embodiment of the present application;

fig. 8 is a test chart of a camera module detection by applying the detection device provided by the embodiment of the application, wherein (a) is a test chart of the camera module detection when the first annular light source is independently lighted; (b) A test chart detected by the camera module when the second annular light source is independently lightened; (c) A test chart for detecting the camera module when the dome light source is independently lightened; (d) A test chart detected by the camera module when the first annular flat-top light source is independently lightened; (e) A test chart detected by the camera module when the second annular flat-top light source is independently lightened; (f) A test chart for detecting the camera module when the coaxial illumination light source is independently lightened; (g) The method comprises the steps that a test chart detected by a camera module when a first annular light source and a second annular light source are simultaneously lightened; (h) A test chart detected by the camera module when the dome light source and the coaxial illumination light source are simultaneously lightened;

Fig. 9 is a flowchart of a detection control method according to an embodiment of the present application.

Detailed Description

In order to further describe the technical means and effects adopted for achieving the preset aim of the present application, the following detailed description will refer to the specific implementation, structure, characteristics and effects of the light emitting component according to the present application with reference to the accompanying drawings and preferred embodiments.

In one aspect, as shown in fig. 1-5, an embodiment of the present application provides a light emitting assembly for providing test light for detection of a camera module, the light emitting assembly including:

The supporting main body (100) is a supporting piece of the light source and is a main body structure of the whole light-emitting assembly, and the supporting main body (100) is made of non-transparent materials and aims at forming a light path. The support main body (100) can be in various shapes, so that the light-emitting assembly can be suitable for detection of more camera modules, the support main body (100) is of a symmetrical structure relative to the central axis a, the whole body is of an approximate conical cylindrical structure, the top end opening (101) and the bottom end opening (102) are oppositely arranged, the center of the top end opening (101) and the center of the bottom end opening (102) are both positioned on the central axis a, and the light ray channels are symmetrical relative to the central axis a. At least two light sources are arranged on the inner wall of the light channel, and the light of the light sources propagates towards the direction of the camera module and is projected onto the camera module after passing through the bottom end opening (102). The light sources can be in various forms, such as at least two light sources can be arranged on two radial sides of the light channel, and are symmetrically arranged on the inner wall of the light channel relative to the central axis a, the light rays of the two light sources are consistent with the included angle of the central axis a, and test light with different angles is provided for the camera module by being positioned on different sides of the camera module. Or, any light source is an annular light source arranged around the central axis a in a circle, and different angles between different light sources and the central axis a can be realized through different vertical distances of different light sources relative to the bottom end opening (102) or relative to the camera module, so that test light with different angles is provided for the camera module. In the embodiment of different vertical distances between the different light sources and the bottom end opening (102), the heights of the different light sources are different, but the projection positions are all the areas where the camera module is located, so that the propagation directions of the light rays of the different light sources are different, and then test light with different angles is provided for the camera module. It will be appreciated that in embodiments where the different light sources are at different vertical distances from the bottom end opening (102), the light sources may not be annular light sources and the light sources may cover only a circumferential partial region of the light path, such as a circumferential quarter region around the light path. In addition, the light source can have other various forms, and the embodiments of the present application, which are not exemplified one by one, are intended to provide test light with different angles for the camera module, all belong to the protection scope of the present application.

When the camera module is used, the supporting main body (100) is positioned above the camera module, the bottom end opening (102) is opposite to the camera module, the central axis a is perpendicular to the plane where the camera module is positioned, and the lens of the image acquisition assembly (700) is aligned to the top end opening (101) for acquiring a test chart of the camera module. When detecting, each light source is turned on in sequence, so that each light source is turned on independently, a single light source test light environment scene is provided for the camera module, and light source combination can be performed, for example, two, three or more light sources are turned on simultaneously according to a preset rule, a multi-light source test light environment is provided for the camera module, the diversity of the test light environment is increased, and more features on the camera module are highlighted. In one embodiment, a strobe control manner may be adopted, so that the light sources are sequentially and instantaneously highlighted according to a preset sequence, and the image acquisition component (700) performs image acquisition when the light sources are turned on, so that a series of test patterns under different test light environments can be obtained quickly in a short time, and the detection process is quick and efficient.

According to the light-emitting assembly, the detection device and the detection control method, at least two light sources are arranged on the support main body, and the light sources are used for providing test light with different angles for the camera module, so that multiple light environments are provided for the camera module. In the prior art, in the optical detection of the camera module, the light source can only provide light of a single angle for the camera module, only can acquire images of the camera module under a single light environment, but for camera modules of different styles and different models, the defect positions of the camera modules are different, the single light environment cannot meet the requirements of diversified light environments, and various light sources are required to be replaced according to the detection requirements of the camera module, so that the universality of the light sources is poor, the detection process is long in period, the operation is complex, and the cost is high. Compared with the prior art, in the document, the supporting body is positioned above the camera module, at least two light sources are arranged in the light channel and irradiate the camera module through the bottom opening, and as the propagation directions of the light rays of the light sources are different, when a single light source is started or a plurality of light source combinations are started simultaneously, test light with different angles can be provided for the camera module, namely different light environments are provided for the camera module, the detection process is realized without changing the light sources, and different positions of the surface of the camera module can be highlighted, so that the characteristics of the surface of the camera module are more comprehensive, the device is applicable to detection of various camera modules, complicated operation of changing the light sources in the detection process is avoided, and the detection efficiency is higher.

The light source may take various forms, such as an embodiment, in which the light source includes a plurality of point light sources circumferentially disposed on an inner wall of the light path around the central axis a. The point light source can be LED lamp beads, namely the light source is composed of a plurality of LEDs, and the LED lamp beads are circumferentially arranged on the inner wall of the light channel around the central axis a to form the light source circumferentially arranged on the inner wall of the light channel. In embodiments in which the vertical distances between the different light sources relative to the bottom end opening (102) are different, and the light sources surround the central axis a for a circle, any one of the light sources comprises a plurality of LED lamp beads which surround the central axis a for a circle and are uniformly distributed. The LED lamp beads in different light sources are different in vertical distance relative to the bottom end opening (102). The LED lamp beads included in any light source are controlled simultaneously, namely are turned on and off simultaneously, and aim to provide uniform light rays in the circumferential direction for the camera module. The LED lamp beads are stable in light emission and long in service life, so that the performance of the light emitting assembly is more stable, replacement is convenient, and the cost is low. The color of the LED lamp beads can be monochromatic, such as white, red, blue and the like.

In another embodiment, the light source includes at least two sub-light sources, the at least two sub-light sources are symmetrically arranged relative to the central axis a, any one of the sub-light sources is circumferentially arranged along the inner wall of the light channel, and any one of the sub-light sources includes a plurality of LED lamp beads. In an embodiment in which the light source surrounds the centre axis a, the LED beads in the at least two sub-light sources surround the centre axis a. Any one of the sub-light sources can be controlled independently, for example, in one embodiment, the light source comprises four sub-light sources, any one of the sub-light sources covers one fourth of the circumference of the inner wall of the light channel, and when in detection, any one of the sub-light sources can be started independently, or two sub-light sources symmetrical relative to the central axis a are started, so that the light source around the central axis a can be started partially, and more light environments are provided for the camera module. The detailed description will be described in connection with more specific examples of light sources hereinafter.

It can be understood that, since the light of any LED light source propagates in a beam shape, in this embodiment, the propagation direction of the light source light refers to the propagation direction of the central line or the optical axis of the light source light beam, and the included angle between the light source light and the central line a refers to the included angle between the central line or the optical axis of the light source light beam and the central line a.

In one embodiment, the at least two light sources include a side light source (200) and a flat top light source (300), the inner wall of the light path includes a side mounting surface (110) and a flat top mounting surface (120), the side mounting surface (110) is closer to the bottom end opening (102) than the flat top mounting surface (120), the flat top mounting surface (120) is perpendicular to the central axis a, and the top end opening (101) is located on the flat top mounting surface (120). The side light source (200) is arranged on the side mounting surface (110) to provide test light for the camera module from an inclined direction, and the flat top light source (300) is arranged on the flat top mounting surface (120) to provide test light for the camera module from the central axis a direction.

The support body (100) includes a top plate and a generally conical tubular structure, the top plate being positioned above the tubular structure, the top opening (101) being positioned in the top plate such that the light path includes a flat top mounting surface (120), and the side mounting surface (110) being positioned in the tubular structure. It will be appreciated that the side mounting surface (110) is not a continuous surface, and that the side mounting surface (110) has a complex surface shape depending on the arrangement of the light sources, as will be described in detail below. The side light source (200) is arranged on the side mounting surface (110) and is positioned above the side of the camera module, so that the side light source (200) provides test light for the camera module from an inclined direction. The flat-top mounting surface (120) is positioned right above the camera module, and light rays of the flat-top light source (300) are projected on the area where the camera module is positioned from top to bottom, so that a vertical test light environment is provided for the camera module.

The side light source (200) and the flat top light source (300) may include various embodiments, one embodiment of the side light source (200) and the flat top light source (300) each being described in detail below, and both embodiments may occur alone or in combination.

In one embodiment, as shown in fig. 1-5, the side light source (200) includes a first annular light source (210) and a second annular light source (220), and the side mounting surface (110) includes a first annular side surface (111) and a second annular side surface (112). The second annular side surface (112) is located between the first annular side surface (111) and the flat top mounting surface (120), the second annular side surface (112) is closer to the central axis a than the first annular side surface (111), and an included angle between the second annular side surface (112) and the central axis a is larger than an included angle between the first annular side surface (111) and the central axis a. The first annular light source (210) is arranged on the first annular side face (111), and the second annular light source (220) is arranged on the second annular side face (112), so that the first annular light source (210) and the second annular light source (220) respectively provide test light for the camera module by different inclination angles.

The first annular side (111) is an engagement surface with the bottom opening (102), or the bottom edge of the first annular side (111) is an edge of the bottom opening (102). The first annular light source (210) is a plurality of LED lamp beads uniformly distributed on the periphery of the first annular side surface (111), namely the point light source. The number of the LED lamp beads is 48-60, and the number of the LED lamp beads can be determined according to the particle size and the luminous intensity of the single LED lamp bead. The first annular side surface (111) is located at the bottommost end of the whole light channel, so that the first annular light source (210) is lowest in position and closest to the plane where the camera module is located, light rays of the first annular light source (210) can be projected to the camera module in the direction almost perpendicular to the central axis a, dark field illumination is provided for the camera module, and the contour contrast of the camera module in a test chart can be improved. As shown in fig. 8 (a), which is a test chart of the first ring light source (210) when it is individually lighted, the edge profile of the camera module is highlighted.

The second annular side (112) is remote from the bottom end opening (102) compared to the first annular side (111), i.e. the second annular side (112) is higher compared to the first annular side (111), such that the second annular light source (220) is positioned higher. As shown in fig. 3, the included angle between the second annular side surface (112) and the central axis a is larger than the included angle between the first annular side surface (111) and the central axis a, so that the second annular light source (220) can project onto the camera module at an angle different from that of the first annular light source (210), or the included angle between the light of the second annular light source (220) and the central axis a is smaller than the included angle between the light of the first annular light source (210) and the central axis a, so that the incident position of the light is offset from the side direction of the camera module towards the surface, and the light of the second annular light source (220) is used for compensating the details of the surface imaging of the camera module. The second annular light source (220) is closer to the central axis a than the first annular light source (210), so that the second annular light source (220) is closer to the central axis a, the incidence angle of light rays of the second annular light source (220) is smaller, and interference of the first annular light source (210) on the light rays of the second annular light source (220) is avoided. Still further, as shown in fig. 1-3, the light emitting assembly further includes a first light homogenizing plate (500), wherein fig. 3 is a schematic view of the second annular side surface (112) and the second annular light source (220) with the first light homogenizing plate (500) removed, and fig. 1-2 are schematic views with the first light homogenizing plate (500). The first light homogenizing plate (500) is connected with the inner wall of the light channel, is opposite to the second annular side surface (112) and the second annular light source (220), and is used for uniformly projecting light of the second annular light source (220). Because the second annular side surface (112) is closer to the central axis a than the first annular side surface (111), a downward table top is formed at the joint position of the second annular side surface (112) and the first annular side surface (111), one end of the first light homogenizing plate (500) is connected to the table top, and the other end extends upwards. The first light homogenizing plate (500) covers the second annular light source (220), and the first light homogenizing plate (500) and the second annular light source (220) have a certain interval. In one embodiment, the second annular light source (220) is a plurality of LED beads uniformly distributed around the second annular side surface (112), i.e. the point light sources. The number of the LED lamp beads is 48-60, and the number of the LED lamp beads can be determined according to the particle size and the luminous intensity of the single LED lamp bead. Light emitted by the LED lamp beads passes through the micro lens array of the first light homogenizing plate (500), focuses through each subunit, forms the focus of array arrangement again, a plurality of beamlets after refocusing are overlapped with each other, the inhomogeneities of the beamlets cancel each other out, and finally the light is uniformly projected to the camera module, so that a uniform light environment is provided for the camera module, and interference caused by light spot contours is avoided. As shown in fig. 8 (b), which is a test chart of the second annular light source (220) when it is independently lighted, it can be seen that the edge profile of the camera module is still obvious, and the profile of the upper surface of the camera module is also obvious, so that the surface profile details of the camera module are more abundant.

In a more specific embodiment, the included angle of the central axis a of the light rays of the first annular light source (210) is larger than or equal to 70 degrees and smaller than or equal to 90 degrees, such as 80 degrees in particular, so that the light rays of the first annular light source (210) can be projected from the side direction of the camera module, and the edge profile detail is ensured to be highlighted. The included angle between the light of the second annular light source (220) and the central axis a is greater than or equal to 50 degrees and less than or equal to 70 degrees, such as 60 degrees, so that the projection direction of the light of the second annular light source (220) is closer to the upper side of the camera module, and the supplement of the contour details of the upper surface of the camera module is ensured.

In addition, in some other embodiments, the first annular light source (210) and the second annular light source (220) may be turned on simultaneously, as in fig. 8 (g), that is, a test chart of the first annular light source (210) and the second annular light source (220) when they are turned on simultaneously, the light rays of the first annular light source (210) and the second annular light source (220) are overlapped, it can be seen that the edge profile of the camera module is arbitrary, and the profile of the upper surface portion of the camera module is simultaneously highlighted, so that the overall surface profile of the camera module is highlighted, and the content is more abundant.

In one embodiment, the flat top light source (300) comprises a first annular flat top light source (310) and a second annular flat top light source (320), and a first annular top groove (121) and a second annular top groove (122) are arranged on the flat top mounting surface (120). The second annular top groove (122) is located outside the first annular top groove (121). The first annular flat-top light source (310) is arranged in the first annular top groove (121), and the second annular flat-top light source (320) is arranged in the second annular top groove (122), so that the first annular flat-top light source (310) and the second annular flat-top light source (320) respectively provide test light for the camera module in different projection ranges.

The first annular flat top light source (310) is a plurality of LED lamp beads uniformly distributed in the first annular top groove (121) in a circle, namely the point light source. The number of the LED lamp beads is 12-15, and the number of the LED lamp beads can be determined according to the particle size and the luminous intensity of the single LED lamp bead. The second annular flat top light source (320) is a plurality of LED lamp beads uniformly distributed in the second annular top groove (122) along a circle, namely the point light source. The number of the LED lamp beads is 24-30, and the number of the LED lamp beads can be determined according to the particle size and the luminous intensity of the single LED lamp bead. The first annular flat-top light source (310) and the second annular flat-top light source (320) project light onto the camera module from top to bottom, the first annular flat-top light source (310) provides small-breadth bright field illumination for the camera module, and the second annular flat-top light source (320) provides large-breadth bright field illumination for the camera module, wherein breadth refers to the range of light projection light spots. Further, the light-emitting component further comprises two second light homogenizing plates, the two second light homogenizing plates are respectively arranged in the first annular top groove (121) and the second annular top groove (122) and are opposite to the first annular flat-top light source (310) and the second annular flat-top light source (320), and the light-emitting component is used for uniformly projecting light rays of the first annular flat-top light source (310) and the second annular flat-top light source (320) and avoiding interference caused by pearl speckle outlines of the LED lamp.

As shown in fig. 8 (d) which is a test chart obtained when the first annular flat top light source (310) is individually lighted, it can be seen that the camera module is illuminated in a small area near the central axis a, and the light intensity is weaker, and the first annular flat top light source (310) can be used in combination with other light sources. As shown in fig. 8 (e) is a test chart obtained when the second annular flat top light source (320) is turned on alone, it can be seen that the camera module is illuminated in a larger area near the central axis a, and the light intensity is stronger, so that the edge profile of the camera module in the vertical direction can be highlighted.

In one embodiment, the at least two light sources further comprise a dome light source (400), the inner wall of the light path further comprises a dome surface (130) and an upper mounting surface (140), the dome surface (130) and the upper mounting surface (140) are both located between the side mounting surface (110) and the flat top mounting surface (120), and the upper mounting surface (140) is closer to the side mounting surface (110) than the dome surface (130). The dome surface (130) is an arc surface, the dome surface (130) gradually converges in a direction approaching the flat top mounting surface (120), and the upper mounting surface (140) faces the dome surface (130). The dome light source (400) is arranged on the upper mounting surface (140), and light rays of the dome light source (400) are projected to the dome surface (130) and reflected by the dome surface (130) to provide uniform test light for the camera module.

The top end of the dome surface (130) is connected with the flat top mounting surface (120), the dome surface (130) is a spherical surface, the first end of the upper mounting surface (140) is connected with the bottom end of the dome surface (130), and the second end of the upper mounting surface (140) is connected with the second annular side surface (112), so that the inner wall of the complete light channel is formed. The radius of the circular top surface (130) is more than or equal to 85 mm and less than or equal to 100 mm, and can be 94 mm specifically, so that the detection of most camera modules can be adapted. The dome light source (400) is a plurality of LED lamp beads uniformly distributed on the periphery of the upper mounting surface (140), namely the point light source. The number of the LED lamp beads is 48-60, and the number of the LED lamp beads can be determined according to the particle size and the luminous intensity of the single LED lamp bead. The light direction of the dome light source (400) is in an upward inclined direction, and irradiates on the dome surface (130), and the included angle between the light of the dome light source (400) and the central axis a is more than or equal to 50 degrees and less than or equal to 80 degrees, for example, can be 60 degrees, so that the light of the dome light source (400) can be projected to the middle area of the top end and the bottom end of the dome surface (130). The dome surface (130) may be covered with a diffuse reflective film. After the light of the dome light source (400) is projected to the dome surface (130), the light is reflected by the dome surface (130) and is projected downwards to the camera module. Because the dome surface (130) is a spherical surface and can diffuse reflect light, the projected light can be uniformly projected to the area where the camera module is located on a large scale.

As shown in fig. 8 (c), the test chart obtained when the dome light source (400) is turned on alone, it can be seen that the test chart is brighter, and the illumination area of the camera module is uniform, so that more features of the camera module can be concentrated and reflected.

In one embodiment, any one of the light sources may include a plurality of sub-light sources, and any one of the sub-light sources may be individually controlled to be lit. In a specific embodiment, as shown in fig. 6, the dome light source (400) includes at least two dome sub-light sources, each of the first annular light source (210) and the second annular light source (220) includes at least two side sub-light sources, the number of the dome sub-light sources and the number of the side sub-light sources are the same, and the dome sub-light sources and the side sub-light sources are in one-to-one correspondence in a direction close to the bottom end opening (102). If the support body (100) includes four dividing lines b, it is understood that the dividing lines b are virtual dividing lines, and the sub-light sources are illustrated for the partitions. The dividing lines b extend in a direction approaching the bottom end opening (102), and the four dividing lines b divide the first annular side surface (111), the second annular side surface (112), the dome surface (130) and the upper mounting surface (140) of the support body (100) into four divided regions, and the dome light source (400), the first annular light source (210) and the second annular light source (220) respectively comprise four sub-light sources, which are respectively located in the divided regions. Any of the sub-light sources may include a plurality of LED light beads, such as dome light source (400) including four sub-light sources, any of the sub-light sources including 12 LED light beads, any of the sub-light sources may be individually controlled to light. The sub-light sources of the dome light source (400), the first annular light source (210) and the second annular light source (220) are also corresponding, as the first annular side (111), the second annular side (112), the dome surface (130) and the partitioned area of the upper mounting surface (140) correspond. When the sub light sources are controlled to be independently lightened, the corresponding sub light sources can be controlled to be lightened, so that multi-light source light superposition of a part area at one side of the camera module is realized, the projection superposition test light of the part area is realized, and the feature of the part of the camera module is closed.

In one embodiment, the light emitting assembly further comprises: and a coaxial illumination light source (600), wherein the coaxial illumination light source (600) is arranged at the top end opening (101), and the coaxial illumination light source (600) is used for generating light rays coaxial with the central axis a.

The coaxial illumination light source (600) is also called as a coaxial light source, and the coaxial illumination light source (600) is opposite to the top end opening (101) and is used for providing uniform light rays perpendicular to the plane where the camera module is located, so that coaxial falling-type illumination can be provided for the camera module, the test chart is very uniform, shadow imaging is reduced, and reflection of the camera module can be avoided. The coaxial illumination light source (600) includes a housing (610), an array light source (620), a diffuser plate (630), and a semi-transparent lens (640). The shell (610) comprises an upper opening and a lower opening, the upper opening is opposite to the lower opening, the lower opening is opposite to the top end opening (101), the array light source (620) is arranged on one side in the shell (610), light rays of the array light source (620) are parallel to the upper opening, the semi-transparent lens (640) is arranged in the shell (610) and opposite to the upper opening, the semi-transparent lens (640) forms an included angle of 45 degrees with light rays of the array light source (620), and the diffusion plate (630) is arranged between the semi-transparent lens (640) and the array light source (620). After passing through the diffusion plate (630) and the semi-transparent lens (640), the light rays of the array light source (620) are projected to the camera module in parallel, and the reflected light of the camera module is emitted from the upper opening after passing through the semi-transparent lens (640) and is taken into the image acquisition component (700). The shell of the coaxial illumination light source (600) is connected with the support main body (100), the array light source (620) is an LED (light-emitting diode) lamp bead plate arranged in the shell (610), the size of an LED lamp bead area can be 40mm multiplied by 40mm, the LED lamp beads are arranged in a square array, and the number of the LED lamp beads in the transverse direction is 10-15, and the number of the LED lamp beads in the longitudinal direction is the same. The shell (610) is internally provided with a diffusion plate and a semi-transparent lens (640), the semi-transparent lens (640) is arranged at 45 degrees with the central axis a, and the semi-transparent lens (640) is a semi-transparent and semi-reflective beam-splitting lens. Light of the LED lamp beads is firstly emitted to the semi-transparent lens (640) after being emitted by the diffusion plate (630), partial light is emitted to the camera module by reflection of the semi-transparent lens (640), and the other part of light is emitted to the semi-transparent lens (640) for segmentation after being transmitted through the semi-transparent lens (640) and reflected by the shell (610). The semi-transparent lens (640) enables light to be projected to the camera module in the direction of the central axis a, reflected light of the rough part on the surface of the camera module is disordered, light reflected by the rough part and passing through the semi-transparent lens (640) is less, light reaching the image acquisition component (700) from the rough part is less, a dark area is arranged on the rough part on the surface of the camera module, and the characteristic of the surface of the camera module is highlighted. And because light is vertically projected to the camera module, the light reflected by the camera module vertically upwards passes through the semi-transparent lens (640) and enters the image acquisition component (700), thus eliminating reflection and avoiding reflection of the image acquisition component (700) in the test chart. As shown in fig. 8 (f), which is a test chart of the coaxial illumination light source (600) when it is independently lighted, it can be seen that the surface flatness of the camera module is highlighted, and it is possible to detect bruise, scratch, crack, foreign matter, etc. on the surface of the camera module.

In addition, in some other embodiments, the dome light source (400) and the coaxial illumination light source (600) may be turned on simultaneously, as shown in fig. 8 (h) which is a test chart of the simultaneous lighting of the dome light source (400) and the coaxial illumination light source (600), the light of the dome light source (400) and the light of the coaxial illumination light source (600) are overlapped, so that the whole surface of the camera module is more clear and complete, and the surface flatness is prominent and the brightness is higher.

On the other hand, as shown in fig. 7, the present application further provides a detection device for detecting a camera module, which includes a light emitting component of any one of the foregoing embodiments, and an image acquisition component (700), a support component (800), and a carrying platform (900), where the support component (800) is connected to the carrying platform (900), the image acquisition component (700), and the light emitting component, and a lens of the image acquisition component (700) is opposite to the top end opening (101). The bearing platform (900) is used for connecting the camera module, and test light enters the image acquisition assembly (700) after being reflected by the camera module, so that the image acquisition assembly (700) acquires a test chart of the camera module.

The camera module is placed on the bearing platform (900), the support assembly (800) is used for fixing the light-emitting assembly above the camera module, the bottom end opening (102) is spaced from the upper surface of the bearing platform (900) by a preset distance, and the preset distance enables light spots of the light source to cover the camera module. The image acquisition assembly (700) is camera equipment, the support assembly (800) is used for erecting the camera equipment on the light-emitting assembly, specifically, a lens of the camera equipment is aligned with an opening of the coaxial illumination light source (600), and the central axis of the camera equipment axis, the central axis of a light path of the coaxial illumination light source (600) and the central axis a of a light path are coincident. The light rays can be reflected by the camera module, can pass through the top end opening (101) and the coaxial illumination light source (600) and then are reflected into the camera equipment to form a test chart. In some embodiments, the support assembly (800) is a liftable support assembly, and can lift the image acquisition assembly (700) and the light emitting assembly integrally, so that the camera module can be taken and placed conveniently. The image acquisition assembly (700) is also connected with a controller to perform contrast analysis on the acquired test patterns.

In still another aspect, as shown in fig. 9, the present application further provides a detection control method, applied to the foregoing detection apparatus, where the detection control method includes:

s1, sequentially powering at least two light sources, so that the at least two light sources sequentially generate test light.

Embodiments in which the light source includes a first annular light source (210), a second annular light source (220), a dome light source (400), a first annular flat top light source (310), a second annular flat top light source (320), and a coaxial illumination light source (600) are described below as examples. The first annular light source (210), the second annular light source (220), the dome light source (400), the first annular flat-top light source (310) and the second annular flat-top light source (320) are sequentially and independently powered to light up in a stroboscopic mode, and the first annular light source (210), the second annular light source (220), the dome light source (400), the first annular flat-top light source (310), the second annular flat-top light source (320) and the coaxial illumination light source (600) sequentially generate instant highlighting, so that the camera module is sequentially exposed to a test light environment generated by a single light source.

Specifically, the following control is sequentially performed by a strobe method:

powering a first annular light source (210), the first annular light source (210) providing a first dark field illumination for the camera module;

Powering a second annular light source (220), the second annular light source (220) providing a second dark field illumination for the camera module;

powering a dome light source (400), the dome light source (400) providing diffuse light illumination of a full spatial area for the camera module;

powering a first annular flat top light source (310), the first annular flat top light source (310) providing small-format illumination for the camera module;

powering a second annular flat top light source (320), the second annular flat top light source (320) providing large-format illumination for the camera module;

the coaxial illumination light source (600) is powered, and the coaxial illumination light source (600) provides coaxial epi-illumination for the camera module.

S2, controlling an image acquisition component (700) to sequentially acquire test patterns of the camera module under each test light.

According to the strobe frequency, the image acquisition assembly (700) acquires the test pattern of the camera module when the first annular light source (210), the second annular light source (220), the dome light source (400), the first annular flat-top light source (310), the second annular flat-top light source (320) and the coaxial illumination light source (600) generate instantaneous highlighting in sequence, and acquires the test pattern of the camera module in a short time under the environment of continuous multiple different single light sources, as shown in fig. 8 (a) to 8 (f).

Specifically, according to the strobe frequency, the image acquisition assembly (700) is controlled to sequentially perform the following operations:

control the image acquisition component (700) to acquire a first profile contrast test chart of the camera module at the time of first dark field illumination, as shown in fig. 8 (a); control the image acquisition component (700) to acquire a test chart of a second profile contrast of the camera module at the time of illumination of a second dark field, as shown in fig. 8 (b); controlling the image acquisition component (700) to acquire diffuse reflection light test patterns of the camera module when the diffuse light of the whole space area is illuminated, as shown in fig. 8 (c); control the image acquisition component (700) to acquire a first type of vertical illumination test chart of the camera module when the small-format illumination is performed, as shown in fig. 8 (d); controlling the image acquisition component (700) to acquire a second type of vertical illumination test chart of the camera module during large-format illumination, as shown in fig. 8 (e); the control image acquisition component (700) acquires a uniform test pattern of the camera module during coaxial epi-illumination, as shown in fig. 8 (f).

S3, simultaneously supplying power to at least two light sources, so that the at least two light sources jointly generate superposition test light.

The method comprises the steps of presetting a combined light source, such as a first annular light source (210) and a second annular light source (220), as the first combined light source, a dome light source (400) and a coaxial illumination light source (600) as the second combined light source, and after a single light source is started, simultaneously lighting the first annular light source (210) and the second annular light source (220) so that the first annular light source (210) and the second annular light source (220) simultaneously generate instant highlighting to generate first type superposition test light, and then lighting the dome light source (400) and the coaxial illumination light source (600) so that the dome light source (400) and the coaxial illumination light source (600) simultaneously generate instant highlighting to generate second type superposition test light. The combined light source still adopts the same strobe control as the single light source.

simultaneously powering the first annular light source (210) and the second annular light source (220), and superposing the light rays of the first annular light source (210) and the second annular light source (220) to provide first superposition test light for the camera module; and simultaneously, the dome light source (400) and the coaxial illumination light source (600) are powered, and the light rays of the dome light source (400) and the coaxial illumination light source (600) are overlapped to provide second overlapped test light for the camera module.

S4, controlling the image acquisition component to acquire a test chart of the camera module under the superposition test light.

According to the strobe frequency, the image acquisition component (700) sequentially acquires the test patterns of the camera module when the first combined light source and the second combined light source generate instantaneous highlighting, and acquires the test patterns of the camera module in a short time under the environment that two continuous different combined light sources overlap light rays, as shown in fig. 8 (g) and 8 (h).

controlling the image acquisition component (700) to acquire a test chart of first superposition test light when the camera module is in the first superposition test light, as shown in fig. 8 (g);

the image acquisition component (700) is controlled to acquire a test chart of the second superposition test light when the camera module is in the second superposition test light, as shown in fig. 8 (h).

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a luminous subassembly, its characterized in that, luminous subassembly is used for providing test light for the detection of camera module, includes:

a support body (100), the support body (100) comprising a top end opening (101), a bottom end opening (102) and a light path communicating with the top end opening (101) and the bottom end opening (102), the bottom end opening (102) being configured to be opposite to the camera module;

the light sources are arranged in the light channel and connected with the supporting main body (100), the propagation directions of light rays of the at least two light sources are different, and the light rays of the light sources are emitted from the bottom end opening (102) so that the at least two light sources provide test light with different angles for the camera module;

The support body (100) comprises a central axis, at least two light sources comprise side light sources (200) and flat top light sources (300), the inner wall of the light channel comprises a side mounting surface (110) and a flat top mounting surface (120), the side mounting surface (110) is closer to the bottom end opening (102) than the flat top mounting surface (120), the flat top mounting surface (120) is perpendicular to the central axis, and the top end opening (101) is positioned on the flat top mounting surface (120);

the side light source (200) is arranged on the side mounting surface (110) to provide test light for the camera module from an inclined direction, and the flat top light source (300) is arranged on the flat top mounting surface (120) to provide test light for the camera module from the central axis direction;

the first annular flat-top light source (310) is arranged in the first annular top groove (121), and the second annular flat-top light source (320) is arranged in the second annular top groove (122), so that the first annular flat-top light source (310) and the second annular flat-top light source (320) respectively provide test light for the camera module in different projection ranges;

At least two of the light sources further comprise dome light sources (400), the inner wall of the light path further comprises a dome surface (130) and an upper mounting surface (140), the dome surface (130) and the upper mounting surface (140) are both located between the side mounting surface (110) and the flat top mounting surface (120), and the upper mounting surface (140) is closer to the side mounting surface (110) than the dome surface (130);

the dome surface (130) is an arc surface, the dome surface (130) gradually converges in a direction approaching to the flat top mounting surface (120), and the upper mounting surface (140) faces the dome surface (130);

the dome light source (400) is arranged on the upper mounting surface (140), and light rays of the dome light source (400) are projected to the dome surface (130) and reflected by the dome surface (130) to provide uniform test light for the camera module;

2. The lighting assembly of claim 1 wherein the light emitting device comprises,

the centers of the top end opening (101) and the bottom end opening (102) are positioned on the central axis, the light ray channels are symmetrical relative to the central axis, and the included angles between the light rays of different light sources and the central axis are different.

3. The lighting assembly of claim 1 wherein the light emitting device comprises,

the side light source (200) comprises a first annular light source (210) and a second annular light source (220), the side mounting surface (110) comprises a first annular side surface (111) and a second annular side surface (112), and the first annular light source (210) and the second annular light source (220) each comprise at least two side sub-light sources;

the second annular side surface (112) is located between the first annular side surface (111) and the flat top mounting surface (120), the second annular side surface (112) is closer to the central axis than the first annular side surface (111), and an included angle between the second annular side surface (112) and the central axis is larger than an included angle between the first annular side surface (111) and the central axis;

4. A lighting assembly according to claim 3 wherein,

an included angle between the light rays of the first annular light source (210) and the central axis is more than or equal to 70 degrees and less than or equal to 90 degrees;

an included angle between the light of the second annular light source (220) and the central axis is greater than or equal to 50 degrees and less than or equal to 70 degrees.

5. A light assembly as recited in claim 3, wherein the light assembly further comprises:

the first light homogenizing plate (500) is connected with the inner wall of the light channel, is opposite to the second annular side face (112) and the second annular light source (220), and is used for uniformly projecting light rays of the second annular light source (220).

6. The lighting assembly of claim 1, further comprising:

the second light homogenizing plate is arranged in the first annular top groove (121) and/or the second annular top groove (122) and is opposite to the first annular flat-top light source (310) and/or the second annular flat-top light source (320) and used for uniformly projecting light rays of the first annular flat-top light source (310) and/or the second annular flat-top light source (320).

7. The lighting assembly of claim 1 wherein the light emitting device comprises,

the dome surface (130) is a spherical surface, and the radius of the dome surface (130) is more than or equal to 85 mm and less than or equal to 100 mm;

and/or, an included angle between the light of the dome light source (400) and the central axis is greater than or equal to 50 degrees and less than or equal to 80 degrees.

8. The lighting assembly of claim 1, further comprising:

-a coaxial illumination light source (600), the coaxial illumination light source (600) being arranged at the top end opening (101), the coaxial illumination light source (600) being adapted to generate parallel light.

9. The lighting assembly of claim 8 wherein the light emitting element is configured to emit light,

the coaxial illumination light source (600) comprises a housing (610), an array light source (620), a diffuser plate (630) and a semi-transparent lens (640);

the shell (610) comprises an upper opening and a lower opening, the upper opening is opposite to the lower opening, the lower opening is opposite to the top opening (101), the array light source (620) is arranged on one side in the shell (610), light rays of the array light source (620) are parallel to the upper opening, the semi-transparent lens (640) is arranged in the shell (610) and opposite to the upper opening, the semi-transparent lens (640) forms an included angle of 45 degrees with the light rays of the array light source (620), and the diffusion plate (630) is arranged between the semi-transparent lens (640) and the array light source (620);

The light of the array light source (620) passes through the diffusion plate (630) and the semi-transparent lens (640) and then is parallelly projected to the camera module, and the reflected light of the camera module is emitted from the upper opening after passing through the semi-transparent lens (640).

10. A detection device for detecting a camera module, comprising the light emitting assembly according to any one of claims 1 to 9, and

the image acquisition device comprises an image acquisition assembly (700), a supporting assembly (800) and a bearing platform (900), wherein the supporting assembly (800) is respectively connected with the bearing platform (900), the image acquisition assembly (700) and the light-emitting assembly, and a lens of the image acquisition assembly (700) is opposite to the top end opening (101);

the bearing platform (900) is used for connecting the camera module, and the test light enters the image acquisition component (700) after being reflected by the camera module, so that the image acquisition component (700) acquires a test chart of the camera module.

11. A detection control method, characterized by being applied to the detection apparatus of claim 10, comprising:

Sequentially powering at least two light sources, so that at least two light sources sequentially generate test light;

controlling an image acquisition component to sequentially acquire test patterns of the camera module under each test light;

simultaneously powering at least two of the light sources such that the at least two light sources together produce superimposed test light;

and controlling an image acquisition component to acquire the test image of the camera module under the superimposed test light.

12. The detection control method according to claim 11, wherein,

the side light source comprises a first annular light source and a second annular light source, and the first annular light source and the second annular light source comprise at least two side sub-light sources;

the sequentially powering the at least two light sources such that sequentially generating test light by the at least two light sources comprises:

powering the first annular light source, the first annular light source providing first dark field illumination for the camera module;

powering the second annular light source, the second annular light source providing second dark field illumination for the camera module;

Controlling the image acquisition component to acquire a first profile contrast test chart of the camera module when the first dark field is illuminated;

13. The detection control method according to claim 11, wherein,

supplying power to the first annular flat-top light source, wherein the first annular flat-top light source provides small-breadth illumination for the camera module;

powering the second annular flat-top light source, wherein the second annular flat-top light source provides large-format illumination for the camera module;

controlling the image acquisition component to acquire a first vertical illumination test chart of the camera module when the small-format illumination is performed;

and controlling the image acquisition component to acquire a second type vertical illumination test chart of the camera module when the large-format illumination is performed.

14. The detection control method according to claim 11, wherein,

powering the dome light source, the dome light source providing diffuse light illumination of a full spatial area for the camera module;

and controlling the image acquisition component to acquire a diffuse reflection optical measurement model of the camera module when the diffuse light of the whole space area is illuminated.

15. The detection control method according to claim 11, wherein,

the light emitting assembly includes a coaxial illumination source;

and controlling the image acquisition component to acquire a uniform test chart of the camera module during coaxial epi-illumination.

16. The detection control method according to claim 11, wherein,

the light emitting assembly further comprises a coaxial illumination light source, the side light source comprises a first annular light source and a second annular light source, and the first annular light source and the second annular light source both comprise at least two side sub-light sources;

the simultaneously powering at least two of the light sources such that the at least two light sources collectively produce a superimposed test light comprises:

simultaneously supplying power to the dome light source and the coaxial illumination light source, wherein the light rays of the dome light source and the coaxial illumination light source are overlapped to provide second overlapped test light for the camera module;

the control image acquisition component acquires a test chart of the camera module under the superposition test light, and the test chart comprises:

controlling the image acquisition component to acquire a test chart of first superposition test light when the camera module is in the first superposition test light;

and controlling the image acquisition component to acquire a test chart of the second superposition test light when the camera module is in the second superposition test light.