CN114001931B

CN114001931B - Testing device and testing method for imaging assembly

Info

Publication number: CN114001931B
Application number: CN202111290474.0A
Authority: CN
Inventors: 邵明天
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2024-04-30
Anticipated expiration: 2041-11-02
Also published as: CN114001931A

Abstract

The disclosure relates to the technical field of electronic equipment, in particular to a testing device and a testing method of an imaging assembly, wherein the testing device of the imaging assembly comprises: the optical assembly comprises a light source piece, a beam splitter, a dispersion lens and a spectrum sensor, wherein the light source piece is used for emitting detection light, the beam splitter is arranged on the light emitting side of the light source piece, the dispersion lens is arranged on one side of the beam splitter away from the light source, and the beam splitter is configured to be capable of transmitting light rays on one side close to the light source piece and reflecting light rays on one side close to the dispersion lens; the test fixture is arranged on one side of the dispersion lens, which is far away from the beam splitter, the imaging component is provided with a reflecting surface, the reflecting surface can reflect the detection light focused on the reflecting surface to form first reflected light, the first reflected light irradiates the beam splitter, and the beam splitter reflects the first reflected light to form second reflected light.

Description

Testing device and testing method for imaging assembly

Technical Field

The disclosure relates to the technical field of testing, in particular to a testing device and a testing method of an imaging assembly.

Background

With the development and progress of technology, imaging functions of electronic devices are increasingly demanded. In order to meet the requirement, a motor is usually arranged in an imaging module of the electronic equipment, and the purpose of improving imaging quality is achieved by driving a camera through the motor, for example, an automatic focusing motor can be arranged in the imaging module, and the camera is pushed to focus through the automatic focusing motor. Because of the high requirements for focus accuracy during imaging, a device for testing the motor of the imaging assembly is needed.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The disclosure aims to provide a testing device and a testing method for an imaging assembly, and further realize testing of a motor in an imaging module.

According to one aspect of the present disclosure, there is provided a test apparatus of an imaging assembly, the test apparatus of the imaging assembly including:

the optical component comprises a light source piece, a beam splitter, a dispersion lens and a spectrum sensor, wherein the light source piece is used for emitting detection light, the beam splitter is arranged on the light emitting side of the light source piece, the dispersion lens is arranged on one side of the beam splitter, which is far away from the light source, the beam splitter is configured to be capable of transmitting light rays on one side, which is close to the light source piece, of reflecting the light rays on one side, which is close to the dispersion lens, of the dispersion lens, and the dispersion lens is used for focusing light with different wavelengths in the detection light on different positions, which are far away from the beam splitter, of the dispersion lens;

The test fixture is arranged on one side of the dispersion lens, which is far away from the beam splitter, and is used for clamping the imaging assembly, the imaging assembly is provided with a reflecting surface, the reflecting surface can reflect the detection light focused on the reflecting surface to form first reflected light, the first reflected light irradiates the beam splitter, and the beam splitter reflects the first reflected light to form second reflected light; the spectrum sensor is used for receiving second reflected light, and the spectrum sensor is used for detecting the spectrum of the second reflected light.

According to another aspect of the present disclosure, a test method of an imaging assembly including a camera and a motor, the camera and the motor being connected, and the motor being used to drive the camera, the test method comprising:

providing a drive signal to the motor to drive the camera to move;

controlling a light source to emit detection light, so that the detection light irradiates a reflecting surface of the camera through a beam splitter and a dispersion lens, the reflecting surface reflects the light focused on the reflecting surface to a spectrum sensor through the dispersion lens and the beam splitter, and the dispersion lens is used for focusing the light with different wavelengths in the detection light at different positions of one side of the dispersion lens far away from the beam splitter;

and determining the actual position of the camera according to the spectrum data acquired by the spectrum sensor.

According to the testing device for the imaging assembly, the light source piece emits detection light, the detection light is divided into light with multiple colors through the beam splitter and the dispersion lens and irradiates onto the imaging assembly on the testing fixture, the reflection surface on the motor reflects the light focused on the reflection surface to form first reflection light, the first reflection light irradiates onto the beam splitter along an original light path, the beam splitter reflects the first reflection light to form second reflection light, the spectrum sensor receives the second reflection light, the spectrum data of the second reflection light are determined in a sensing mode, the position of the reflection surface can be determined according to the spectrum data, and therefore testing of motor performance in the imaging assembly is achieved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

FIG. 1 is a schematic diagram of a first imaging assembly testing apparatus provided in an exemplary embodiment of the present disclosure;

FIG. 2 is a block diagram of a testing apparatus for an imaging assembly provided in an exemplary embodiment of the present disclosure;

fig. 3 is a schematic structural view of a first light source member according to an exemplary embodiment of the present disclosure;

fig. 4 is a schematic structural view of a second light source member according to an exemplary embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a test apparatus of a second imaging assembly according to an exemplary embodiment of the present disclosure;

FIG. 6 is a spectral diagram of a spectral sensor detection provided by an exemplary embodiment of the present disclosure;

FIG. 7 is a flowchart of a method of testing a first imaging assembly provided in an exemplary embodiment of the present disclosure;

FIG. 8 is a schematic state diagram of an imaging assembly provided in an exemplary embodiment of the present disclosure;

FIG. 9 is a flowchart of a method of testing a second imaging assembly provided in an exemplary embodiment of the present disclosure;

FIG. 10 is a flowchart of a method of testing a third imaging assembly provided in an exemplary embodiment of the present disclosure;

Fig. 11 is a flowchart of a fourth method of testing an imaging assembly provided in an exemplary embodiment of the present disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification for convenience only, such as in terms of the orientation of the examples described in the figures. It will be appreciated that if the device of the icon is flipped upside down, the recited "up" component will become the "down" component. When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

An imaging module is installed in electronic equipment (such as a mobile phone, a tablet personal computer, wearable equipment and the like), and the imaging module is used for acquiring image data. The imaging assembly may include a camera and a motor coupled to the motor mover, the motor driving the camera. Wherein, the motor can be used for automatic focusing or optical anti-shake and the like.

The imaging assembly is used for imaging, so that the requirement on the precision of the motor is high. The motor is tested, and the motor test device is used for testing whether the motor is qualified or not on one hand, and can be used for calibrating the motor on the other hand.

By way of example, the theoretical position of the camera can be determined according to the driving signal in the working process of the motor, the actual position of the camera is determined by using the testing device, when the theoretical position and the actual position of the camera are consistent, the motor is considered to be qualified, and when the theoretical position and the actual position of the camera are inconsistent, the motor is considered to be unqualified.

The motor can also be influenced by factors such as self gravity and camera gravity in the use process, so that the control has the problem of error. In the testing process, the driving signals and the positions of the corresponding cameras can be recorded when the imaging assembly is in different forms, so that the motor is calibrated, and the motor is controlled conveniently.

Exemplary embodiments of the present disclosure first provide a testing apparatus of an imaging assembly, as shown in fig. 1, including: an optical assembly 10 and a test fixture 20. The optical assembly 10 includes a light source member 110, a beam splitter 120, a dispersion lens 130, and a spectrum sensor 140, the light source member 110 being configured to emit probe light; the beam splitter 120 is disposed on the light emitting side of the light source member 110, the dispersion lens 130 is disposed on the side of the beam splitter 120 away from the light source, the beam splitter 120 is configured to transmit light near the light source member 110, reflect light near the dispersion lens 130, and the dispersion lens 130 is configured to focus light with different wavelengths in the probe light at different positions on the side of the dispersion lens 130 away from the beam splitter 120. The test fixture 20 is arranged on one side of the dispersion lens 130 away from the beam splitter 120, the test fixture 20 is used for clamping the imaging assembly 30, the imaging assembly 30 is provided with a reflecting surface, the reflecting surface can reflect the detection light focused on the reflecting surface to form first reflected light, the first reflected light irradiates the beam splitter 120, and the beam splitter 120 reflects the first reflected light to form second reflected light; the spectrum sensor 140 is configured to receive the second reflected light, and the spectrum sensor 140 is configured to detect a spectrum of the second reflected light.

According to the testing device for the imaging assembly provided by the embodiment of the disclosure, the light source member 110 emits the detection light, the detection light is divided into light with multiple colors through the beam splitter 120 and the dispersion lens 130 and irradiates onto the imaging assembly 30 on the testing fixture 20, the reflection surface on the motor 31 reflects the light focused on the reflection surface to form first reflection light, the first reflection light irradiates onto the beam splitter 120 along an original light path, the beam splitter 120 reflects the first reflection light to form second reflection light, the spectrum sensor 140 receives the second reflection light, the spectrum data of the second reflection light is sensed and determined, and the position of the reflection surface can be determined according to the spectrum data, so that the performance of the motor 31 in the imaging assembly 30 is tested.

Further, the testing device of the imaging assembly provided in the embodiment of the present disclosure may further include a stand 40 and a rotating arm 50, where the stand 40 is used to form a main body of the testing device of the imaging assembly. The rotating arm 50 is rotatably connected to the bracket 40, the optical assembly 10 and the test fixture 20 are connected to the rotating arm 50, and different postures of the electronic device in use can be simulated by rotating the rotating arm 50, so that the test of different use postures of the imaging assembly 30 is realized.

The optical assembly 10 and the rotating arm 50 may be connected in a sliding manner, and the optical assembly 10 may be movable in a direction perpendicular to the optical axis of the probe light, so as to scan the entire reflection surface of the camera head 32 with the probe light.

Further, as shown in fig. 2, the testing device for an imaging assembly according to the embodiment of the present disclosure may further include a control module 80, where the control module 80 is connected to the spectrum sensor 140, and is configured to determine the pose of the imaging assembly 30 according to the spectrum data detected by the spectrum sensor 140. And further testing of the performance of the motor 31 is achieved.

The following will describe in detail each part of the testing device of the imaging assembly provided in the embodiments of the present disclosure:

the stand 40 is used to form a main body of the testing device forming the imaging assembly, and the stand 40 may include a base 41 and a connection part 42, the base 41 and the connection part 42 being connected, the base 41 being used to support the entire testing device, and the connection part 42 being used to connect the rotating arm 50.

The rotating arm 50 is rotatably connected to the connection part 42, wherein a driving motor may be provided on the connection part 42, the driving motor is connected to the rotating arm 50, and the rotating arm 50 is driven to rotate relative to the bracket 40 by the driving motor. The driving motor is connected with the control module 80, a driving signal is provided for the driving motor through the control module 80, and the control module 80 controls the rotating arm 50 to rotate by a preset angle. When the rotating arm 50 is stopped at the preset position, the control module 80 controls the spectrum sensor 140 to detect the spectrum data of the second reflected light.

By way of example, the drive motor may be a servo motor or a stepper motor or the like. When the driving motor is a servo motor, the driving motor may include a motor connected to the connection part 42 and an output shaft of the motor connected to the rotating arm 50, and a servo driver connected to the control module 80 and driving the motor according to a signal output from the control module 80. When the driving motor is a stepping motor, the driving motor may include a motor connected to the connection part 42 and an output shaft of the motor connected to the rotating arm 50, and a stepping driver connected to the control module 80 and driving the motor according to a signal output from the control module 80.

Alternatively, the rotating arm 50 may be rotatably connected to the connection portion 42, and the relative positional relationship between the rotating arm 50 and the connection portion 42 may be adjusted by manual rotation. For example, a damping member may be provided on the connection portion 42, and configured to enable relative rotation between the rotation arm 50 and the connection portion 42 when a force applied to the rotation arm 50 is greater than a preset threshold.

Wherein a scale value may be provided on the rotating portion, the scale value being configured to be 0-360 degrees along the circumference. The angle of rotation of the rotating arm 50 relative to the connection portion 42 can be determined by the scale value on the connection portion 42. So that the posture of the imaging assembly 30 can be determined, and the influence of the posture of the imaging assembly 30 on the output of the motor 31 can be determined.

The optical assembly 10 and the test fixture 20 are connected to a rotating arm 50, respectively. The optical assembly 10 and the rotating arm 50 may be slidably connected, and the optical assembly 10 may be slid in a direction perpendicular to the optical axis of the probe light. For example, in a Cartesian coordinate system, the optical axis of the probe light is along the Z direction, and the optical assembly 10 can slide in the X direction and the Y direction.

The testing device for an imaging assembly according to the embodiment of the present disclosure may further include a connection plate 60, the connection plate 60 is connected to the support 40, and the connection plate 60 and the testing fixture 20 are disposed opposite to each other along the direction of the measuring light path, and the optical assembly 10 is slidably connected to a side of the connection plate 60 facing the testing fixture 20.

Wherein, the connecting plate 60 is connected with one end of the rotating arm 50, and the connecting plate 60 is opposite to the testing fixture 20, the optical assembly 10 is arranged on one side of the connecting plate 60 facing the testing fixture 20, the imaging assembly 30 to be tested is clamped on the testing fixture 20, and the reflecting surface is opposite to the optical assembly 10. The connecting plate 60 is provided with a sliding rail, and the optical assembly 10 is connected with the sliding rail.

By way of example, the connection plate 60 may include a first plate and a second plate, the first plate being connected to the rotation arm 50, the second plate being connected to the first plate, the second plate being capable of sliding in the X-direction with respect to the first plate, the optical assembly 10 being connected to the second plate, the second plate being provided with a slide rail in the Y-direction along which the optical assembly 10 is capable of moving.

The test fixture 20 is connected to the rotating arm 50, and a receiving portion is disposed on the test fixture 20, and the receiving portion is used for placing the imaging component 30 to be tested. The test fixture 20 may be provided with an adjustment mechanism for adjusting the receiving portion to enable the test fixture 20 to be adapted for testing of different sized imaging assemblies 30.

Wherein, the optical path of the optical assembly 10 is a pre-calibrated optical path in use, and in order to meet this requirement, the reflective surface of the imaging assembly 30 needs to be set at a preset initial position. The position of the optical assembly 10 on the test fixture 20 may be adjusted by an adjustment mechanism.

By way of example, the test fixture 20 may include a fixture body with a recess provided therein for placement of the imaging assembly 30 and an adjustment bolt (not shown). The bottom of the recess may be provided with a threaded hole, and the adjusting bolt is connected to the threaded hole. The imaging assembly 30 can be pushed to move by rotating the adjusting bolt, so that the initial position of the reflecting surface is calibrated.

The light source member 110 is configured to emit probe light, and in the embodiment of the present disclosure, the light source member 110 may be a linear light source member capable of emitting linear probe light, and the linear probe light irradiates a surface of an object to be probed to form a linear light spot. Of course, in practical applications, the light source 110 may be a point light source, and the embodiment of the disclosure is not limited thereto.

In one possible embodiment of the present disclosure, as shown in fig. 3, the light source member 110 includes: a point light source 111, a first collimating lens 112, a first converging lens 113, and a first linear stop 114; the first collimating lens 112 is disposed on the light-emitting side of the point light source 111, and the first collimating lens 112 is configured to convert the light emitted from the point light source 111 into parallel light; the first converging lens 113 is disposed on a side of the first collimating lens 112 away from the point light source 111, and the first converging lens 113 is used for converging parallel light rays to form linear light; the first linear diaphragm 114 is disposed on a side of the first converging lens 113 away from the first collimating lens 112, and the first linear diaphragm 114 is configured to filter stray light in the linear light and output linear detection light.

The point light source 111 can generate divergent light, and the point light source 111 may be a light emitting element such as an LED lamp or a halogen lamp. The light emitted from the point light source 111 is visible light, and the wavelength of the light emitted from the electric light source may be 400 nm to 700 nm.

The first collimating lens 112 is disposed on the light emitting side of the point light source 111, the collimating lens is an optical device, and the first collimating lens 112 is used for directing the light beam emitted by the point light source 111 in the light emitting direction so as to form collimated light or parallel light. Thereby preventing or at least minimizing the spreading of the light beam over distance. The first collimating lens 112 may include one or more lenses, and the collimating lens may include a plurality of lens combinations such as a concave lens, a convex lens, and a plane mirror.

The first condensing lens 113 is disposed on a side of the first collimating lens 112 away from the point light source 111, and the first condensing lens 113 is configured to condense the light transmitted by the collimating lens into linear light. The first condensing lens 113 may be a cylindrical lens having a power meridian through which the vergence of the light rays changes after the probe light passes. The probe light is converged into linear probe light after passing through the cylindrical lens. Of course, in practical applications, the first converging lens 113 may also be formed by a plurality of lens combinations, for example, the first converging lens 113 may include a plurality of lens combinations such as a cylindrical lens, a concave lens, a convex lens, and a plane mirror.

The first linear diaphragm 114 is disposed on a side of the converging lens away from the collimating lens, and the first linear diaphragm 114 is used for filtering stray light in the probe light. The first linear diaphragm 114 may include a diaphragm body, on which a linear hole is provided, forming a diaphragm. The light emitted from the point light source 111 passes through the first collimating lens 112, the first converging lens 113, and the first line stop 114 to form line-type probe light.

In another possible embodiment of the present disclosure, as shown in fig. 4, the light source member 110 may include: a line source 115, a second collimator lens 116, a second condenser lens 117, and a second line stop 118; the second collimating lens 116 is disposed on the light-emitting side of the linear light source 115, and is configured to collimate the light of the linear light source 115 to output parallel light; the second converging lens 117 is disposed at a side of the second collimating lens 116 away from the linear light source 115, and the second converging lens 117 is used for converging parallel light rays to form linear light; the second linear diaphragm 118 is disposed at a side of the second converging lens 117 away from the second collimating lens 116, and the second linear diaphragm 118 is configured to filter stray light in the linear light and output linear detection light.

The linear light source 115 can generate linear light, and the linear light source 115 may be a light emitting element such as an LED lamp or a halogen lamp. The light emitted from the line light source 115 is visible light, and the wavelength of the light emitted from the line light source 115 may be 400 nm to 700 nm.

The second collimating lens 116 is disposed on the light emitting side of the linear light source 115, and the second collimating lens 116 is used for directing the light beam emitted by the point light source 111 in the light emitting direction to form collimated light or parallel light. Thereby preventing or at least minimizing the spreading of the light beam over distance. The second collimating lens 116 may be a cylindrical collimating lens. Or the second collimating lens 116 may comprise one or more lenses, and the collimating lens may comprise a plurality of lens combinations such as concave lenses, convex lenses, and plane mirrors.

The second converging lens 117 is disposed on a side of the collimating lens away from the point light source 111, and the second converging lens 117 is configured to converge the light transmitted by the collimating lens into linear light. The second condensing lens 117 may be a cylindrical condensing lens having a power meridian through which the vergence of the light ray changes after the probe light passes. The probe light is converged into linear probe light after passing through the cylindrical converging lens. Of course, in practical applications, the converging lens may be formed by a plurality of lens combinations, for example, the second converging lens 117 may include a plurality of lens combinations such as a cylindrical lens, a concave lens, a convex lens, and a plane lens.

The second linear diaphragm 118 is disposed at a side of the second converging lens 117 away from the second collimating lens 116, and the second linear diaphragm 118 is used for filtering stray light in the detected light. The second linear diaphragm 118 may include a diaphragm body, and a linear hole is disposed on the diaphragm body to form a diaphragm. The light emitted from the line light source 115 passes through the second collimator lens 116, the second condenser lens 117, and the second line stop 118 to form line-type detection light.

The beam splitter 120 is disposed on the light emitting side of the light source member 110, the beam splitter 120 is configured to be capable of transmitting light on the first side and reflecting light on the second side, and a side of the beam splitter 120 close to the light source is the first side.

Wherein the optical axes of the beam splitter 120 and the probe light intersect, and the optical axes of the beam splitter 120 and the probe light are not perpendicular. The probe light output from the light source 110 can enter the dispersion lens 130 through the beam splitter 120, and when the light reflected by the imaging assembly 30 is irradiated to the beam splitter 120, the beam splitter 120 can reflect the light.

The beam splitter 120 may be a single-sided mirror having a reflective surface and a transmissive surface, the transmissive surface of the single-sided mirror facing the light source 110 and the reflective surface of the single-sided mirror facing the dispersing lens 130. And the reflecting surface of the single-sided perspective mirror is not perpendicular to the optical axis of the detection light. The light emitted by the light source 110 irradiates the dispersive lens 130 through the single-sided mirror, and the light reflected by the imaging component 30 irradiates the reflecting surface of the single-sided mirror through the dispersive lens 130, and the reflecting surface of the single-sided mirror reflects the light to the spectrum sensor 140.

By way of example, the perspective and reflecting surfaces of the beam splitter 120 are disposed in parallel, and the angle between the beam splitter 120 and the optical axis of the probe light may be 45 degrees. The light reflected by the reflecting surface of the beam splitter 120 is transmitted to the side of the light source member 110, and the spectrum sensor 140 is disposed at the side of the light source member 110.

The dispersive lens 130 is disposed on a side of the beam splitter 120 away from the light source, and the dispersive lens 130 is used to focus the probe light of different wavelengths at different positions on the side of the dispersive lens 130 away from the beam splitter 120.

The chromatic dispersion is a phenomenon in which the complex-color light is decomposed into monochromatic light to form a spectrum, that is, the chromatic dispersion lens 130 can decompose the complex-color detection light into monochromatic light of a plurality of different colors. And the dispersive lens 130 is different in focus for light of different colors (wavelengths). After the probe light passes through the dispersion lens 130, the focal point distances of the light of different wavelengths are different from the dispersion lens 130. For example, light having a wavelength of 700 nm is focused at a first location, light having a wavelength of 550 nm is focused at a second location, and light having a wavelength of 400 nm is focused at a third location.

It should be noted that, in the embodiment of the present disclosure, the transmittance of each light transmitting element is configured to be greater than 90% to ensure the intensity of the detection light finally reflected to the spectrum sensor 140.

Further, the light source assembly provided in the embodiments of the present disclosure may further include a package housing, in which a receiving cavity is disposed, and the light source 110, the beam splitter 120, the dispersion lens 130, and the spectrum sensor 140 are disposed in the receiving cavity.

The light source 110, the beam splitter 120 and the dispersive lens 130 are sequentially disposed in the accommodating cavity along the optical axis. The spectrum sensor 140 may be disposed on a sidewall of the accommodating cavity, and the spectrum sensor 140 is disposed on an optical path of the second reflected light.

The imaging assembly 30 includes a motor 31 and a camera 32, the camera 32 is connected to the motor 31, and the motor 31 is used for driving the camera 32, and the reflecting surface is located on a surface of the camera 32 away from the motor 31. When the electronic equipment images, the motor 31 drives the camera 32 to move, so that the functions of automatic focusing, anti-shake and the like are realized. The camera 32 is a rigid device, and thus the performance of the motor 31 can be detected by detecting the position of the lens surface (i.e., the reflecting surface) of the camera 32 under the drive of the motor 31.

In order to enhance the reflectivity of the reflecting surface, as shown in fig. 5, the testing device of the imaging assembly may further include a reflecting mirror 70, where the reflecting mirror 70 is disposed on a side of the camera 32 facing the connection board 60, and the reflecting mirror 70 forms the reflecting surface.

The control module 80 is connected to the spectrum sensor 140 for determining the pose of the imaging assembly 30 based on the spectrum data detected by the spectrum sensor 140.

The control module 80 has a wavelength-focal point mapping relationship, where the wavelength-focal point mapping relationship includes a mapping relationship between a focal point of the dispersive lens 130 and a wavelength of the probe light. The wavelength-focal point mapping may be determined by calibration. The wavelength-focal point mapping relationship may be stored in the control module 80 in the form of a table or a function.

The working principle of the testing device of the imaging assembly provided by the embodiment of the disclosure is as follows:

The light source assembly emits detection light, the detection light irradiates the dispersion lens 130 through the beam splitter 120, the dispersion lens 130 disperses the detection light into a plurality of color light beams, and the plurality of color light beams are focused at different positions of the dispersion lens 130 away from one side of the beam splitter 120 after passing through the dispersion lens 130. When the reflecting surface of the imaging assembly 30 is located at the focal point of light with a certain color, the light with the certain color is reflected to form first reflected light, the first reflected light is reflected to the reflecting surface of the beam splitter 120 along the original light path, the reflecting surface of the beam splitter 120 reflects the first reflected light to form second reflected light, the second reflected light irradiates the spectrum sensor 140, and the spectrum of the second reflected light is determined by the reflected light sensed by the spectrum sensor 140. The wavelength of the second reflected light, i.e., the wavelength of the light focused on the reflective surface of the imaging assembly 30, is determined from the spectrum of the second reflected light. The control module 80 stores a wavelength-focus mapping relationship, and determines the position of the focus according to the wavelength-focus mapping relationship, where the position of the focus is the position of the reflecting surface of the camera 32, that is, the position of the camera 32 driven by the motor 31.

In practical application, the spectrum sensor 140 detects the ambient light or the light of other wavelengths reflected by the reflecting mirror 70, but the spectrum intensity of the light focused on the reflecting surface is the largest among the spectrum detection results. Therefore, as shown in fig. 6, the wavelength corresponding to the point of the spectrum having the largest peak of the spectrum intensity in the spectrum is the wavelength of the light focused on the reflecting surface. The peak wavelength points can be in one-to-one correspondence with the test distances through the calibration of the test device in the earlier stage. Therefore, the control module 80 can calculate the distance between the object to be tested and the testing device after obtaining the spectrum data.

The probe light is a linear probe light, and when the motor 31 is used for auto-focusing, the motor 31 drives the camera head 32 away from the test jig 20 or toward the test jig 20, and at this time, the wavelengths of the light rays focused on the mirror 70 of the camera head 32 are different.

When the motor 31 is used to detect the performance of the motor 31, the camera 32 may perform translational motion on the test fixture 20, and the position of the camera 32 may not be determined at a time by the line-type probe light. At this time, the linear probe light can be scanned across the reflecting surface of the camera 32, and the position of the camera 32 can be determined according to the spectral data detected by the spectral sensor 140 and the relative positional relationship between the optical assembly 10 and the bracket 40, so as to test the motor 31.

At the time of testing, the motor 31 in the imaging assembly 30 can be tested by rotating the rotary arm 50 so that the imaging assembly 30 is in different postures. For example, the motor 31 may be tested when the angle between the rotating arm 50 and the connecting portion 42 is 0 degrees, 45 degrees, 90 degrees, 135 degrees, and 180 degrees, respectively.

During testing, a drive signal needs to be provided to the motor 31 in the imaging assembly 30, and in order to provide a drive signal to the motor 31, a connection 42 may be provided on the test fixture 20. The connection portion 42 is for electrically connecting the motor 31, and supplying a driving signal to the motor 31. The connection portion 42 may be a pad or a power interface, etc.

The test device of the imaging assembly provided by the embodiment of the disclosure can detect the positions of the camera 32 and the motor 31 when the reflecting surface of the camera 32 is perpendicular to the optical axis of the probe light. The positions of the camera 32 and the motor 31 can be detected when the reflecting surface of the camera 32 is not perpendicular to the optical axis, and the height difference of different positions of the reflecting surface can be determined by a scanning detection mode, so that the detection of the inclined position of the camera 32 is realized.

According to the testing device for the imaging assembly provided by the embodiment of the disclosure, the light source member 110 emits the detection light, the detection light is divided into light with multiple colors through the beam splitter 120 and the dispersion lens 130 and irradiates onto the imaging assembly 30 on the testing fixture 20, the reflection surface on the motor 31 reflects the light focused on the reflection surface to form first reflection light, the first reflection light irradiates onto the beam splitter 120 along an original light path, the beam splitter 120 reflects the first reflection light to form second reflection light, the spectrum sensor 140 receives the second reflection light, the spectrum data of the second reflection light is sensed and determined, and the position of the reflection surface can be determined according to the spectrum data, so that the performance of the motor 31 in the imaging assembly 30 is tested. And the miniaturization and the convenience of the testing device are realized, and the testing device has the advantages of high accuracy, strong universality, wide application range and the like.

The exemplary embodiments of the present disclosure also provide a testing method of an imaging assembly including a camera and a motor, the camera and the motor being connected, and the motor being used to drive the camera, as shown in fig. 7, the testing method of the imaging assembly may include the steps of:

step S710, providing a driving signal to the motor to drive the camera to move through the motor;

step S720, controlling the light source to emit detection light, so that the detection light irradiates the reflecting surface of the camera through the beam splitter and the dispersion lens, the reflecting surface reflects the light focused on the reflecting surface to the spectrum sensor through the dispersion lens and the beam splitter, and the dispersion lens is used for focusing the light with different wavelengths in the detection light at different positions of one side of the dispersion lens far away from the beam splitter;

Step S730, determining the actual position of the camera according to the spectrum data collected by the spectrum sensor.

According to the testing method for the imaging assembly, the light source piece emits the detection light, the detection light is divided into light with multiple colors through the beam splitter and the dispersion lens and irradiates the light to the imaging assembly on the testing fixture, the reflection surface on the motor reflects the light focused on the reflection surface to form first reflection light, the first reflection light irradiates the beam splitter along an original light path, the beam splitter reflects the first reflection light to form second reflection light, the spectrum sensor receives the second reflection light, the spectrum data of the second reflection light are determined in a sensing mode, the position of the reflection surface can be determined according to the spectrum data, and therefore testing of motor performance in the imaging assembly is achieved.

Further, as shown in fig. 9, the method for testing an imaging assembly according to the embodiment of the disclosure further includes the following steps:

Step S740, determining the theoretical position of the camera under the current driving signal according to the driving signal;

step S750, when the difference between the actual position and the theoretical position of the camera is smaller than a preset threshold value, determining that the imaging assembly is qualified.

And determining the theoretical position of the camera on the current driving signal line through the driving signal, comparing the theoretical position with the actual position, and determining that the imaging assembly is qualified when the difference between the actual position of the camera and the theoretical position is smaller than a preset threshold value, thereby realizing the detection of whether the motor is qualified.

Further, as shown in fig. 10, the method for testing an imaging assembly according to the embodiment of the disclosure further includes the following steps:

step 760, the rotation arm is controlled to rotate to drive the test fixture, the imaging assembly and the optical assembly to rotate, so as to realize the test of the imaging assembly by the optical assembly under different postures, and the rotation arm is connected with the test fixture and the imaging assembly.

The rotating arm drives the test fixture, the imaging component and the optical component to rotate, so that various postures of the imaging component during use can be simulated, and the performance of the motor can be tested more comprehensively.

Further, when the motor drives the camera to translate, as shown in fig. 11, the testing method of the imaging assembly provided in the embodiment of the disclosure further includes the following steps:

In step S770, the light source is controlled to move along the preset direction, so that the detected light scans the reflecting surface to determine the spectrum data of the detected light focused on the reflecting surface.

The detection light traverses the reflecting surface of the camera in a scanning mode, and the position of the light source part is recorded in the scanning process, so that the position of the reflecting surface of the camera can be determined, and the translation test of the camera driven by the motor is realized.

The following describes in detail each step of the testing method of the imaging assembly provided in the embodiment of the present disclosure:

in step S710, a driving signal may be provided to the motor to drive the camera to move by the motor.

The imaging assembly is arranged on the test fixture during testing, and the reflecting surface of the imaging assembly can be adjusted to an initial position by an adjusting mechanism on the test fixture before testing. The test begins by providing a drive signal to the motor, which moves to a corresponding position in response to the drive signal.

For example, when the motor is an autofocus motor, a driving signal may be output to the motor, so that the motor moves according to a preset step, and the motor drives the camera to move along the optical axis direction of the optical component, that is, the reflective surface is always perpendicular to the optical axis of the optical component. The position of the camera is tested once with the optical assembly for each step of motor movement.

When the motor is an anti-shake motor, a driving signal can be output to the motor, so that the motor moves according to a preset step length, the motor can drive the camera to move along the direction parallel to and perpendicular to the optical axis of the optical assembly, namely, under the driving of the anti-shake motor, the reflecting surface can form any included angle with the optical axis of the optical assembly. The position of the camera is tested once with the optical assembly for each step of motor movement. For example, as shown in fig. 8, the reflecting surface of the camera and the optical axis of the optical component are not perpendicular, that is, the reflecting surface is an inclined surface with respect to the optical component.

During testing, it is necessary to provide a drive signal to a motor in the imaging assembly, and electrical connections may be provided on the test fixture in order to provide a drive signal to the motor. The electric connection part is used for electrically connecting the motor and providing a driving signal for the motor. The electrical connection may be a pad or a power interface, etc.

The driving signal can be provided by a control module, the control module can comprise a computer and a motor driver, the motor driver is respectively connected with the computer and the motor, and the motor driver drives the motor to move under the control of the computer.

In step S720, the light source member may be controlled to emit the probe light such that the probe light irradiates the reflecting surface of the camera through the beam splitter and the dispersion lens, and the reflecting surface reflects the light focused on the reflecting surface to the spectrum sensor through the dispersion lens and the beam splitter, the dispersion lens being used to focus the light of different wavelengths in the probe light at different positions on a side of the dispersion lens away from the beam splitter.

The control module can send a trigger signal to the light source component, and the light source component emits detection light when the light source component receives the trigger signal. The detection light is dispersed into light with multiple colors after passing through the beam splitter and the dispersion lens, and the light with multiple colors is focused at different positions on one side of the dispersion lens, which is far away from the light source component. When the reflecting surface of the camera is positioned at the focusing position of light of one color, the light of the color is reflected to the beam splitter along the original light path and is reflected to the spectrum sensor through the beam splitter.

The light source member is configured to emit probe light, and in the embodiment of the present disclosure, the light source member may be a line light source member, and the line light source member may emit line probe light, where the line probe light irradiates a surface of the object to be probed to form a line-type light spot. Of course, in practical application, the light source member may be a point light source, etc., which is not limited in the embodiment of the disclosure.

The light source piece is a linear light source piece, and the detection light emitted by the linear light source piece is linear detection light. In a possible embodiment of the present disclosure, the light source member includes: a point light source, a first collimating lens, a first converging lens and a first linear diaphragm; the first collimating lens is arranged on the light emitting side of the point light source and is used for converting light rays emitted by the point light source into parallel light rays; the first converging lens is arranged on one side of the first collimating lens, which is far away from the point light source, and is used for converging parallel light rays to form linear light; the first linear diaphragm is arranged on one side of the first converging lens, which is far away from the first collimating lens, and is used for filtering stray light in the linear light and outputting linear detection light. .

The point light source can generate divergent light, and the point light source can be a luminous element such as an LED lamp or a halogen lamp. The light emitted from the point light source is visible light, and the wavelength of the light emitted from the electric light source may be 400 nm to 700 nm.

The first collimating lens is arranged on the light emitting side of the point light source, the collimating lens is an optical device, and the collimating lens is used for aligning the light beam emitted by the point light source to the light emitting direction so as to form collimated light or parallel light. Thereby preventing or at least minimizing the spreading of the light beam over distance. The collimating lens can comprise one or more lenses, and the collimating lens can comprise a plurality of lens combinations such as a concave lens, a convex lens, a plane mirror and the like.

The first converging lens is arranged on one side, far away from the point light source, of the first collimating lens and is used for converging light rays transmitted by the collimating lens into linear light. The first converging lens may be a cylindrical lens having a power meridian through which the detected light passes, the vergence of the light being changed. The probe light is converged into linear probe light after passing through the cylindrical lens. In practical applications, the converging lens may be formed by a plurality of lens combinations, for example, the first converging lens may include a plurality of lens combinations such as a cylindrical lens, a concave lens, a convex lens, and a plane lens.

The first linear diaphragm is arranged on one side, far away from the first collimating lens, of the converging lens, and the first linear diaphragm is used for filtering stray light in the detection light. The first linear diaphragm may include a diaphragm body, and a linear hole is provided in the diaphragm body to form the diaphragm. The light emitted by the point light source passes through the first collimating lens, the first converging lens and the first linear diaphragm to form linear detection light.

In another possible embodiment of the present disclosure, the light source member may include: the linear light source, the second collimating lens, the second converging lens and the second linear diaphragm; the second collimating lens is arranged on the light-emitting side of the linear light source and is used for collimating the light rays of the linear light source so as to output parallel light rays; the second converging lens is arranged on one side of the second collimating lens far away from the linear light source and is used for converging parallel light rays to form linear light; the second linear diaphragm is arranged on one side of the second converging lens, which is far away from the second collimating lens, and is used for filtering stray light in the linear light and outputting linear detection light.

The linear light source can generate linear light, and the linear light source can be a luminous element such as an LED lamp or a halogen lamp. The light emitted from the line light source is visible light, and the wavelength of the light emitted from the line light source may be 400 nm to 700 nm.

The second collimating lens is arranged on the light emitting side of the linear light source, the collimating lens is an optical device, and the second collimating lens is used for aligning the light beam emitted by the point light source to the light emitting direction so as to form collimated light or parallel light. Thereby preventing or at least minimizing the spreading of the light beam over distance. Wherein the second collimating lens may be a cylindrical collimating lens. Or the second collimating lens comprises one or more lenses, and the second collimating lens can comprise a plurality of lens combinations such as a concave lens, a convex lens, a plane mirror and the like.

The second converging lens is arranged on one side, far away from the point light source, of the second collimating lens, and the second converging lens is used for converging the light rays transmitted by the collimating lens to form linear light. The second converging lens may be a cylindrical converging lens having a power meridian through which the detected light passes, the vergence of the light being changed. The probe light is converged into linear probe light after passing through the cylindrical converging lens. In practical applications, the second converging lens may be formed by a plurality of lens combinations, for example, the second converging lens may include a plurality of lens combinations such as a cylindrical lens, a concave lens, a convex lens, and a plane mirror.

The second linear diaphragm is arranged on one side of the converging lens, which is far away from the second collimating lens, and is used for filtering stray light in the detection light. The second linear diaphragm may include a diaphragm body, and a linear hole is provided on the diaphragm body to form the diaphragm. The light emitted by the linear light source passes through the second collimating lens, the second converging lens and the second linear diaphragm to form linear detection light.

The beam splitter is arranged on the light emitting side of the light source device, is configured to be capable of transmitting light rays of the first side and reflecting light rays of the second side, and one side, close to the light source, of the beam splitter is the first side.

Wherein the optical axes of the beam splitter and the probe light intersect, and the optical axes of the beam splitter and the probe light are not perpendicular. The detection light output by the light source component can enter the dispersion lens through the beam splitter, and when the light reflected by the imaging component irradiates the beam splitter, the beam splitter can reflect the light.

The beam splitter may be a single-sided mirror having a reflective surface and a transmissive surface, the transmissive surface of the single-sided mirror facing the light source, and the reflective surface of the single-sided mirror facing the dispersive lens. And the reflecting surface of the single-sided perspective mirror is not perpendicular to the optical axis of the detection light. The light emitted by the light source part irradiates the dispersion lens through the single-sided perspective mirror, the light reflected by the imaging component irradiates the reflecting surface of the single-sided perspective mirror through the dispersion lens, and the reflecting surface of the single-sided perspective mirror reflects the light to the spectrum sensor.

By way of example, the perspective and reflecting surfaces of the beam splitter may be disposed in parallel, and the angle between the beam splitter and the optical axis of the probe light may be 45 degrees. The light reflected by the reflecting surface of the beam splitter is transmitted to the side part of the light source component, and the spectrum sensor is arranged on the side part of the light source component.

The dispersive lens is arranged on one side of the beam splitter, which is far away from the light source, and is used for focusing the detection light with different wavelengths at different positions on one side of the dispersive lens, which is far away from the beam splitter.

Dispersion is a phenomenon in which a complex-color light is decomposed into monochromatic light to form a spectrum, that is, a dispersion lens can decompose a complex-color probe light into monochromatic light of a plurality of different colors. And the dispersive lenses have different focuses for light of different colors (wavelengths). After the probe light passes through the dispersive lens, the focal point distances of the light with different wavelengths are different from the dispersive lens. For example, light having a wavelength of 700 nm is focused at a first location, light having a wavelength of 550 nm is focused at a second location, and light having a wavelength of 400 nm is focused at a third location.

In step S730, the actual position of the camera may be determined according to the spectral data collected by the spectral sensor.

The control module is connected with the spectrum sensor and used for determining the gesture of the imaging component according to the spectrum data detected by the spectrum sensor. The control module is provided with a wavelength-focus mapping relation, wherein the wavelength-focus mapping relation comprises a mapping relation between a focus of the dispersion lens and a detection light wavelength. The wavelength-focal point mapping may be determined by calibration. The wavelength-focal point mapping relationship may be stored in the control module in the form of a table or a function.

In step S740, a theoretical position of the camera under the current driving signal may be determined according to the driving signal.

The motor can respond to the current driving signal to drive the movement result of the camera under the current driving signal according to the type of the motor, the design parameters of the motor and the like, and then the theoretical position of the camera is determined.

The theoretical position of the camera obtained through calculation and the actual position of the camera obtained through testing can be compared, and when the difference between the actual position of the camera and the theoretical position is smaller than a preset threshold value, the imaging assembly is determined to be qualified. And when the difference between the actual position and the theoretical position of the camera is greater than or equal to a preset threshold value, determining that the imaging assembly is unqualified.

In step S760, the rotation arm is controlled to rotate to drive the test fixture, the imaging assembly and the optical assembly to rotate, so as to test the imaging assembly under different postures by the optical assembly, and the rotation arm is connected with the test fixture and the imaging assembly.

Wherein, the support is used for forming the main part of the testing arrangement of imaging module, and the support can include base and connecting portion, and base and connecting portion connect, and the base is used for supporting whole testing arrangement, and connecting portion are used for connecting the swinging boom.

The rotating arm is rotationally connected with the connecting part, wherein a driving motor can be arranged on the connecting part, the driving motor is connected with the rotating arm, and the rotating arm is driven to rotate relative to the bracket through the driving motor. The driving motor is connected with the control module, driving signals are provided for the driving motor through the control module, and the control module controls the rotating arm to rotate by a preset angle. When the rotating arm is stopped at the preset position, the control module controls the spectrum sensor to detect spectrum data of the second reflected light.

By way of example, the drive motor may be a servo motor or a stepper motor or the like. When driving motor is servo motor, driving motor can include motor and servo driver, and the motor is connected in connecting portion, and the output shaft and the swinging boom of motor are connected, and servo driver and control module are connected, and servo driver drives motor according to the signal of control module output. When the driving motor is a stepping motor, the driving motor can comprise a motor and a stepping driver, the motor is connected to the connecting part, an output shaft of the motor is connected with the rotating arm, the stepping driver is connected with the control module, and the stepping driver drives the motor according to signals output by the control module.

Or the rotating arm can also be rotatably connected to the connecting part, and the relative position relationship between the rotating arm and the connecting part is adjusted in a manual rotation mode. For example, a damping member may be provided on the connection portion, the damping member being configured to enable relative rotation between the rotating arm and the connection portion when a force exerted on the rotating arm is greater than a preset threshold.

Wherein a scale value may be provided on the rotating portion, the scale value being configured to be 0-360 degrees along the circumference. The rotating angle of the rotating arm relative to the connecting part can be determined through the scale value on the connecting part. Thereby enabling the pose of the imaging assembly to be determined, determining the effect of the pose of the imaging assembly on the motor output.

During testing, the rotating arm can be rotated to enable the imaging assembly to be in different postures, and the motor in the imaging assembly is tested. For example, when the included angle between the rotating arm and the connecting portion is 0 degree, 45 degrees, 90 degrees, 135 degrees and 180 degrees, the motor can be tested respectively.

In step S770, the light source member may be controlled to move in a predetermined direction so that the detected light scans the reflection surface to determine spectral data of the detected light focused on the reflection surface.

Wherein the optical assembly and the rotating arm may be slidably connected, and the optical assembly may be slidable in a direction perpendicular to an optical axis of the probe light. For example, in a Cartesian coordinate system, the optical axis of the probe light is along the Z direction, and the optical assembly can slide in the X direction and the Y direction.

The testing device of the imaging assembly provided by the embodiment of the disclosure can further comprise a connecting plate, wherein the connecting plate is connected to the bracket, and the connecting plate is opposite to the testing fixture, and the optical assembly is in sliding connection with one side of the connecting plate facing the testing fixture.

The optical assembly is arranged on one side of the connecting plate, facing the test fixture, of the connecting plate, the imaging assembly to be tested is clamped on the test fixture, and the reflecting surface is opposite to the optical assembly. The connecting plate is provided with a sliding rail, and the optical component is connected with the sliding rail.

For example, the connection plate may include a first plate and a second plate, the first plate and the rotation arm are connected, the second plate and the first plate are connected, the second plate is capable of sliding in an X direction with respect to the first plate, the optical assembly is connected to the second plate, and a slide rail in a Y direction is provided on the second plate, along which the optical assembly is capable of moving.

Through the test of scanning formula, can test anti-shake motor. Under the drive of the anti-shake motor, the reflecting surface can form any included angle with the optical axis of the optical component. When the motor moves for one step, the optical assembly is utilized to perform a scanning test on the position of the camera. The scanning test can acquire spectral data of any point on the reflecting surface, further can determine the spatial position of the whole reflecting surface, and determines the motion state of the anti-shake motor according to the spatial position of the reflecting surface, so as to realize the test of the anti-shake motor.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A testing apparatus for an imaging assembly, the testing apparatus comprising:

The test fixture is arranged on one side of the dispersion lens, which is far away from the beam splitter, and is used for clamping the imaging component, the imaging component is provided with a reflecting surface, the reflecting surface can reflect detection light focused on the reflecting surface to form first reflected light, the first reflected light irradiates to the beam splitter, the beam splitter reflects the first reflected light to form second reflected light, the spectrum sensor is used for receiving the second reflected light, the spectrum sensor is used for detecting the spectrum of the second reflected light, determining the wavelength of the second reflected light according to the spectrum of the second reflected light, determining the position of a focus according to the wavelength-focus mapping relation, determining the position of the camera under the driving of a motor according to the position of the focus, providing a driving signal for the motor, determining the theoretical position of the camera under the current driving signal according to the driving signal, and determining that the imaging component is qualified when the difference between the actual position and the theoretical position of the camera is smaller than a preset threshold value.

2. The testing device of an imaging assembly of claim 1, wherein the light source member is a line light source member and the probe light emitted by the line light source member is a line probe light.

3. The testing device of an imaging assembly of claim 2, wherein the light source member comprises:

A point light source;

The first collimating lens is arranged on the light emitting side of the point light source and is used for converting light rays emitted by the point light source into parallel light rays;

The first converging lens is arranged on one side, far away from the point light source, of the first collimating lens and is used for converging the parallel light rays to form linear light;

The first linear diaphragm is arranged on one side, far away from the first collimating lens, of the first converging lens, and is used for filtering stray light in the linear light and outputting linear detection light.

4. The testing device of an imaging assembly of claim 2, wherein the light source member comprises:

a line light source;

the second collimating lens is arranged on the light emitting side of the linear light source and is used for collimating the light rays of the linear light source so as to output parallel light rays;

The second converging lens is arranged on one side, far away from the linear light source, of the second collimating lens and is used for converging the parallel light rays to form linear light;

the second linear diaphragm is arranged on one side of the second converging lens, which is far away from the second collimating lens, and is used for filtering stray light in the linear light and outputting linear detection light.

5. The imaging assembly testing apparatus of claim 1, wherein the probe light has a wavelength of 400 nm to 700 nm.

6. The testing device for an imaging assembly of claim 1, wherein the testing device for an imaging assembly further comprises:

a bracket;

The rotating arm is connected to the support, can rotate relative to the support, and the optical assembly and the test fixture are arranged on the rotating arm.

7. The imaging assembly testing apparatus of claim 6, wherein said optical assembly and said rotating arm are slidably coupled.

8. The testing device for an imaging assembly of claim 7, wherein the testing device for an imaging assembly further comprises:

The connecting plate is connected to the support, the connecting plate and the test fixture are oppositely arranged along the direction of the measuring light path, and the optical assembly is connected to one side of the connecting plate, which faces the test fixture in a sliding mode.

9. The testing device for an imaging assembly of claim 7, wherein the testing device for an imaging assembly further comprises:

And the reflecting mirror is arranged on one side of the imaging assembly, which faces the connecting plate, and forms the reflecting surface.

10. The testing apparatus of an imaging assembly of any of claims 1-9, wherein the testing apparatus of an imaging assembly further comprises:

the control module is connected with the spectrum sensor and used for determining the position of the imaging component according to the spectrum data detected by the spectrum sensor.

11. The testing device of imaging assemblies according to claim 10, wherein a wavelength-focus mapping relationship is provided in the control module, wherein the wavelength-focus mapping relationship includes a mapping relationship between a focus of the dispersive lens and a wavelength of the probe light.

12. A testing device for an imaging assembly according to any of claims 1-9, wherein the imaging assembly comprises a motor and a camera, the camera and the motor being connected, and the motor being adapted to drive the camera, the reflecting surface being located on a side of the camera remote from the motor.

13. A method of testing an imaging assembly, the imaging assembly comprising a camera and a motor, the camera and the motor being connected and the motor being used to drive the camera, the method comprising:

providing a drive signal to the motor to drive the camera to move;

Determining a wavelength according to spectrum data acquired by a spectrum sensor, and determining the actual position of a camera according to a wavelength-focus mapping relation;

Determining a theoretical position of the camera under the current driving signal according to the driving signal; and when the difference between the actual position and the theoretical position of the camera is smaller than a preset threshold value, determining that the imaging assembly is qualified.

14. The test method of claim 13, wherein the test method further comprises:

the rotating arm is controlled to rotate so as to drive the testing clamp, the imaging assembly and the optical assembly to rotate, so that the optical assembly can test the imaging assembly under different postures, and the rotating arm is connected with the testing clamp and the imaging assembly.

15. The test method of claim 14, wherein the test method further comprises:

And controlling the light source to move along a preset direction, so that the detection light scans the reflecting surface to determine the spectrum data of the detection light focused on the reflecting surface.