CN112153364B

CN112153364B - Stray light detection apparatus and method

Info

Publication number: CN112153364B
Application number: CN201910559571.1A
Authority: CN
Inventors: 陈永明; 冯天山; 张荣飞
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2022-06-24
Anticipated expiration: 2039-06-26
Also published as: CN112153364A

Abstract

The application provides stray light detection equipment and a method for detecting stray light of a motor of a camera module. The stray light detecting apparatus includes: the light source is arranged at a plurality of angles relative to the optical axis of the incident surface of the camera module to be detected, the light sources are configured to emit light respectively to irradiate the incident surface of the camera module to be detected, wherein the optical center of a single light source is incident light relative to the connecting line of the intersection point of the incident surface and the optical axis, the angle is the included angle between the incident light and the optical axis of the incident surface, and the camera module to be detected is configured to image the incident light to generate an image.

Description

Stray light detection apparatus and method

Technical Field

The present application relates generally to stray light detection apparatus and methods, and more particularly, to apparatus and methods for detecting camera module stray light.

Background

With the rapid development of the mobile phone industry, the requirements of people on the imaging quality of a mobile phone camera are continuously improved, so that the detection requirements of various optical lenses in stray light detection are higher and higher.

After the camera module is assembled by the lens, the motor and other components, the roughness of the surface of the material is different due to the size difference of the used material, under a specific light source angle, not only the surface of the lens can generate stray light due to reflection and refraction, but also the reflection of the surface of the motor can cause the generation of the stray light.

The stray light detection method generally adopted in the industry at present is that a light source circularly moves by taking a lens or a camera module as a center so as to detect stray light at different angles, and human eyes observe whether the lens generates stray light or not. The light source driving mode of the detection device is manually executed. However, since the holding force of the human hand is unstable, it is difficult to perform accurate detection of an accurate angle.

Disclosure of Invention

The present application provides a solution that overcomes at least or in part at least one of the above-identified deficiencies of the prior art.

According to an aspect of the present application, there is provided a stray light detecting apparatus for detecting stray light of a motor of a camera module, characterized by comprising:

the light source is arranged at a plurality of angles relative to the optical axis of the incident surface of the camera module to be detected, the light sources are configured to emit light respectively to irradiate the incident surface of the camera module to be detected, wherein the optical center of a single light source is incident light relative to the connecting line of the intersection point of the incident surface and the optical axis, the angle is the included angle between the central incident light and the optical axis of the incident surface, and the camera module to be detected is configured to image the incident light to generate an image.

According to an exemplary embodiment of the present application, the plurality of light sources are linearly distributed and are axisymmetrically distributed with respect to an incident surface light.

According to an exemplary embodiment of the application, the connecting lines of the plurality of light sources are parallel to a plane where the photosensitive chip of the to-be-detected camera module is located, and a plane where the central incident light of each light source is located is parallel to a plane where the photosensitive chip of the to-be-detected camera module is located.

According to an exemplary embodiment of the application, the plurality of angles comprises: -18 °, -17 °, -16 °, -15 °, -14 °, -13 °, -12 °, -11 °, -10 °, -9 °, -8 °, -7 °, -6 °, 0 °,6 °,7 °, 8 °, 9 °, 10 °, 11 °, 12 °, 13 °, 14 °, 15 °, 16 °, 17 °, 18 °, wherein "+" and "-" respectively denote angles on both sides of the optical axis of the entrance face.

According to an exemplary embodiment of the present application, the stray light detecting apparatus further includes: the image transmission module is connected with the camera module to be detected; and the image analysis module is configured to analyze the image generated by the camera module to be detected so as to generate detection data.

According to an exemplary embodiment of the application, the angular accuracy comprises ± 0.1 °.

According to an exemplary embodiment of the present application, the plurality of light sources being configured to emit light respectively comprises individually controlling the plurality of light sources to emit light respectively by software and an electrically controlled switch.

According to an exemplary embodiment of the present application, the plurality of light sources are disposed on a circumference, and the camera module to be detected is placed such that an intersection point of the incident surface and the optical axis is disposed at a center of the circumference.

According to an exemplary embodiment of the present application, the stray light detecting apparatus further includes: a work table; and the camera module bearing seat is arranged on the table top of the workbench and is configured to bear the camera module to be detected.

According to an exemplary embodiment of the present application, the stray light detecting apparatus further includes a light source bearing seat disposed on the table top of the working table and configured to bear the plurality of light sources.

According to another aspect of the present application, a method for detecting stray light of a motor of a camera module is provided, which includes:

placing a camera module to be detected;

the periscopic camera comprises a plurality of light sources, wherein the light sources are arranged at a plurality of angles relative to an optical axis of an incident surface of a to-be-detected camera module, the light sources are configured to emit light respectively to irradiate the incident surface of the to-be-detected periscopic camera module, the optical center of a single light source is used as light source center incident light relative to a connecting line of an intersection point of the incident surface and the optical axis, the angle is an included angle between the center incident light and the optical axis of the incident surface, and the to-be-detected camera module is configured to image the incident light to generate an image.

According to an exemplary embodiment of the present application, the plurality of angles includes: -18 °, -17 °, -16 °, -15 °, -14 °, -13 °, -12 °, -11 °, -10 °, -9 °, -8 °, -7 °, -6 °, 0 °,6 °,7 °, 8 °, 9 °, 10 °, 11 °, 12 °, 13 °, 14 °, 15 °, 16 °, 17 °, 18 °, wherein "+" and "-" respectively denote angles on both sides of the optical axis of the entrance face.

According to an exemplary embodiment of the application, the method further comprises: transmitting the image generated by the camera module to be detected to an image analysis module through an image transmission module; and analyzing the generated image by an image analysis module to generate detection data.

According to an exemplary embodiment of the present application, the plurality of light sources are disposed on a circumference, and the camera module is placed such that an intersection point of the incident surface and the optical axis is disposed at a center of the circumference.

According to an exemplary embodiment of the application, the method further comprises: setting a workbench; and arranging a camera module bearing seat on the table board of the workbench, wherein the camera module bearing seat is configured to bear the camera module to be detected.

According to an exemplary embodiment of the application, the method further comprises: the table-board of the workbench is provided with a plurality of light source bearing seats, wherein the light source bearing seats are configured to bear the light sources.

According to still another aspect of the present application, there is provided a stray light detecting apparatus for detecting stray light of a lens, characterized by comprising:

the light source is arranged at a plurality of angles relative to the central axis of the lens to be detected, and the light sources are configured to respectively emit light to irradiate the lens, wherein the light center of a single light source is light source center incident light relative to a connecting line of the intersection point of the lens and the central axis, and the angle is an included angle between the center incident light and the central axis of the lens; and

the image capturing module is configured to receive the light passing through the lens to generate an image.

According to an exemplary embodiment of the present application, the stray light detecting apparatus further includes: an image analysis module configured to analyze the generated image to generate detection data.

According to an exemplary embodiment of the present application, the plurality of light sources are disposed on a circumference, and an intersection point of the lens and the central axis is disposed at a center of the circumference.

According to an exemplary embodiment of the present application, the plurality of light sources are symmetrically disposed on the circumference.

According to an exemplary embodiment of the application, the plurality of light sources are arranged at equal intervals on the circumference.

According to an exemplary embodiment of the present application, the stray light detecting apparatus further includes: a work table; and the lens bearing seat is arranged on the table top of the workbench and is configured to bear the lens.

According to an exemplary embodiment of the present application, the stray light detecting apparatus further includes: and the light source bearing seat is arranged on the table top of the workbench and is configured to bear the plurality of light sources.

Compared with the prior art, the technical scheme provided by the exemplary embodiment of the application has at least one of the following technical effects:

compared with the mode of holding the light source by hand in the prior art, the accurate detection of the accurate angle can be carried out;

compared with the prior art, the method has the advantages that the accuracy is improved by observing the stray light through human eyes;

basically, the purpose that the light source does circular motion by taking a camera module or a lens as the center in the prior art is realized;

only the light source with a specific angle in the range of generating the stray light is needed to irradiate the incident surface of the periscopic camera module, so that whether the periscopic camera module is qualified or not can be detected;

light sources at other angles in the middle area in the range of generating stray light are removed, and the detection can be carried out more quickly and simply;

the image can be analyzed, and the accuracy of analysis is improved;

the switching rate of a plurality of light sources at different angles can be improved, and compared with the mode in the prior art, the detection efficiency can be improved, and the detection time is saved;

the arrangement of the light source is convenient;

facilitating calibration and post-maintenance of each light source.

Drawings

Exemplary embodiments are illustrated in referenced figures of the drawings. The embodiments and figures disclosed herein are to be regarded as illustrative rather than restrictive.

Fig. 1A shows an explanatory diagram of a periscopic imaging mode, and fig. 1B, 1C, and 1D show explanatory examples of stray light at a frame R angle of-10 °, a base R angle of 10 °, and a frame R angle of-13 ° of a motor in a periscopic imaging module, respectively.

Fig. 2 schematically shows a block diagram of a stray light detection apparatus according to an exemplary embodiment of the present application.

Fig. 3A, 3B, and 3C respectively show examples of images generated by the stray light detecting apparatus for detecting a periscopic camera module according to the exemplary embodiment of the present application for the periscopic camera modules of fig. 1B, 1C, and 1D.

Fig. 4 schematically shows a stray light detection apparatus for detecting stray light of a motor of a periscopic camera module according to another exemplary embodiment of the present application.

Fig. 5 schematically shows a flow chart of a method for detecting stray light of a motor of a periscopic camera module according to an exemplary embodiment of the present application.

FIG. 6 schematically shows a block diagram of a stray light detecting apparatus according to an exemplary embodiment of the present application.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that the expressions first, second, etc. in this specification are used only to distinguish one feature from another feature, and do not indicate any limitation on the features. Thus, a first layer discussed below may also be referred to as a second layer without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of an object have been slightly exaggerated for convenience of explanation. The figures are purely diagrammatic and not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including" and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, the use of "may" mean "one or more embodiments of the application" when describing embodiments of the application. Also, the term "exemplary" is intended to refer to an example or illustration.

As used herein, the terms "substantially," "about," and the like are used as words of table approximation, not as words of table degree, and are intended to account for inherent deviations in measured or calculated values that would be recognized by one of ordinary skill in the art.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

In addition, the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Fig. 1A shows an illustrative schematic view of a periscopic camera module (after assembly). As shown in the figure, light enters the periscopic camera module from the incident surface of the periscopic camera module and enters the lens through reflection. The broken lines shown in fig. 1A are the optical axis of the incident surface and the central axis of the lens, respectively.

At present, because of the structural design, the motor is arranged in the periscopic camera module, and incident light in a certain angle range passes through a lens of the periscopic camera module and then is incident to a frame R angle and a base R angle of the motor. Because the motor is integrally injection-molded, under the condition that the roughness of the frame R angle and the base R angle of the motor cannot meet the requirement, the frame R angle and the base R angle of the motor can reflect incident light to the surface of the photosensitive chip and are received by the photosensitive chip, so that stray light of the motor is caused.

Fig. 1B, 1C, and 1D show illustrative examples of stray light at a frame R angle of-10 °, a base R angle of 10 °, and a frame R angle of-13 ° of a motor in a periscopic camera module, respectively.

On the other hand, in the periscopic camera module, since the incident light passes through the incident surface, the light is reflected by the turning prism, passes through the lens and the color filter, and reaches the photosensitive chip, the optical path is long, the image is dark, the photosensitive chip is generally rectangular, and the image field of the optical system is circular, the stray light of the image generated by the periscopic camera module is generally serious on one side, as shown in fig. 3A to 3C.

Fig. 2 schematically shows a stray light detection apparatus for detecting motor stray light of a periscopic camera module according to an exemplary embodiment of the present application.

As shown in fig. 2, the stray light detecting apparatus for detecting a periscopic camera module according to an exemplary embodiment of the present application may include a plurality of light sources 10. According to certain exemplary embodiments of the present application, the light source 10 may be, for example, an incandescent lamp, a light emitting diode, a laser diode, or any other suitable light source. The plurality of light sources 10 may be disposed at a plurality of angles with respect to an optical axis (indicated by a dotted line in fig. 2) of an incident surface of the periscopic camera module 100 to be detected, and may emit light to illuminate the incident surface of the periscopic camera module 100 to be detected, wherein an optical center of a single light source is a light source center incident light with respect to a connecting line of an intersection point of the incident surface and the optical axis, and the angle is an included angle between the center incident light and the optical axis of the incident surface. After the light source 10 emits light at the incident surface of the periscopic camera module to be detected, the periscopic camera module to be detected 100 is configured to image the incident light to generate an image, for example, through a photosensitive chip within the periscopic camera module to be detected 100. It will be appreciated by those skilled in the art that the periscopic camera module 100 to be inspected can be powered in any suitable manner. Thereafter, the generated image may be displayed and viewed by an operator in any suitable manner, for example. In certain exemplary embodiments, for example, as shown in fig. 3A-3C, which respectively show examples of images generated by the stray light detecting apparatus for detecting a periscopic camera module of the exemplary embodiments of the present application for the periscopic camera modules of fig. 1B, 1C, 1D. Thereafter, the operator can judge whether or not the flare is generated by observing the image.

In the stray light detection apparatus for detecting a periscopic camera module according to the exemplary embodiment of the present application, the plurality of light sources 10 are arranged at a plurality of precise angles in advance, so that accurate detection of precise angles can be performed compared to the manner of holding light sources in the related art.

Also, the stray light detecting apparatus according to the above-described exemplary embodiment of the present application can generate an image with improved accuracy compared to the manner in which stray light is observed by the human eye in the related art.

In the stray light detection apparatus for detecting a periscopic camera module according to an exemplary embodiment of the present application, the plurality of light sources are linearly distributed and are axisymmetrically distributed with respect to the incident plane light. For example, in the exemplary embodiment shown in fig. 2, a plurality of light sources 10 are arranged in a strip-shaped plate, and the plurality of light sources 10 are linearly distributed. Also, the plurality of light sources 10 shown in fig. 2 are distributed axisymmetrically with respect to the incident surface light. It should be noted that this is merely illustrative, and the scope of the present application is not limited thereto. For example, the plurality of light sources 10 may be arranged in any other arrangement, which is included in the scope of the present application, for example, see fig. 4, which will be described in detail below.

Furthermore, the connecting lines of the plurality of light sources 10 are parallel to the plane where the photosensitive chip of the periscopic camera module 100 to be detected is located, and the plane where the central incident light of each light source 10 is located is parallel to the plane where the photosensitive chip of the periscopic camera module 100 to be detected is located, so as to ensure that the light of the light sources irradiates the edge of the photosensitive chip of the periscopic camera module 100 to be detected as far as possible.

It will be understood by those skilled in the art that although 5 light sources 10 are schematically illustrated in the figures, this is merely illustrative and the scope of the present application is not limited thereto. For example, according to some exemplary embodiments of the present application, 179 light sources may be provided, and the 179 light sources may be respectively provided at-90 °, -89 °, -88 °, -87 °, -86 °, -85 °, -84 °, -83 °, -82 °, -81 °, -80 °, -79 °, -78 °, -77 °, -76 °, -75 °, -74 °, -73 °, -72 °, -71 °, -70 °, -69 °, … -10 °, -9, -8 °, -7 °, -6 °, -5 °, -4 °, -3 °, -2 °, -1 °, 2 °, 3 °, 4 °, 5 °,6 °,7 °, 8 °, 9 °, 10 °, …,69 °, 70 °, 71 °, 72 °, 73 °, 74 °, 75 °, 76 °, 77 °, 78 °,79 °, 80 °, 81 °, 82 °, 83 °, 84 °, 85 °, 86 °, 87 °, 88 °, 89 °, 90 °, wherein "+" and "-" respectively denote angles on both sides of the optical axis of the incident surface. That is, the 179 light sources may be arranged within a range of (-90 °, 90 °) with respect to the optical axis of the incident surface of the periscopic imaging module, with an interval of 1 ° between adjacent light sources. Through such light source setting mode, under the condition that the angular accuracy meets the requirements, can basically realize with prior art light source use the module of making a video recording as the center circular motion (namely, use periscopic to make a video recording the module and rotate 180 degrees for the center) the similar purpose. It will be appreciated by those skilled in the art that more light sources may be provided with greater angular accuracy requirements. For example, according to certain exemplary embodiments of the present application, 359 light sources may be provided, and the 359 light sources may be respectively provided at-90 °, -89.5 °, -88.5 °, -88 °, -87.5 °, -87 °, -86.5 °, -86 °, -85.5 °, -85 °, -84.5 °, -84 °, -83.5 °, -83 °, -82.5 °, -82 °, -81.5 °, -81 °, -80.5 °, -80 °, -79.5 °, -79 °, … °, -10 °, -9.5 °, -9 °, -8.5 °, -8 °, -7.5 °, -7 °, -6.5 °, -6 °, -5.5 °, -5 °,5 °, -4.5 °, -4 °, -3.5 °, -3 °, -2.5 °, -2 °, -1.5 °, -1 °, -0.5 °, 0 °, 0.5 °, 1 °, 1.5 °, 2 °, 2.5 °, 3 °, 3.5 °, 4 °, 4.5 °, 5 °, 5.5 °,6 °, 6.5 °,7 °, 7.5 °, 8 °, 8.5 °, 9 °, 9.5 °, 10 °, …,79 °, 79.5 °, 80 °, 80.5 °, 81 °, 81.5 °, 82 °, 82.5 °, 83 °, 83.5 °, 84 °, 84.5 °, 85 °, 85.5 °, 86 °, 86.5 °, 87 °, 87.5 °, 88 °, 88.5 °, 89 °, 89.5 °, 90 °. That is, the 359 light sources may be respectively disposed within a range of (-90 °, 90 °) with respect to the optical axis of the incident surface of the periscopic camera module, with an interval of 0.5 ° between the adjacent light sources. It can be understood by those skilled in the art that any plurality of light sources can be provided on the premise that the precision is sufficiently accurate, so that the purpose similar to that of the prior art in which the light source performs circular motion (i.e., rotates 180 ° around the periscopic camera module) by taking the periscopic camera module as the center can be basically achieved.

As described above, in the periscopic camera module, the generation of stray light at a particular angle is caused by the particular structure of the motor in the camera module. The inventor finds that the periscopic camera module can be judged to meet the quality requirement as long as stray light beyond a standard range is not detected at certain specific angles.

In the stray light detecting apparatus for detecting motor stray light of a periscope camera module according to an exemplary embodiment of the present application, 27 light sources 10 may be included, the 27 light sources 10 being respectively disposed at-18 °, -17 °, -16 °, -15 °, -14 °, -13 °, -12 °, -11 °, -10 °, -9 °, -8 °, -7 °, -6 °, 0 °,6 °,7 °, 8 °, 9 °, 10 °, 11 °, 12 °, 13 °, 14 °, 15 °, 16 °, 17 °, 18 °, wherein "+", "respectively indicate angles on both sides of the optical axis of the incidence plane, with respect to the optical axis (shown by a dotted line in fig. 2) of the incidence plane of the periscope camera module 100 to be detected. That is, the 27 light sources 10 are symmetrically disposed, and are respectively disposed in the range of (-18 °, -6 °) { (0 ° } [ (6 °, 18 °) with respect to the optical axis of the incident surface of the periscopic imaging module 100 to be inspected, wherein the light source angles of the two light sources closest to the light source at the center of symmetry (i.e., the middle light source) are ± 6 °, and the other adjacent light sources 10 are spaced 1 ° apart.

Whereas in a stray light detection apparatus for detecting motor stray light of a periscope camera module according to another exemplary embodiment of the present application, 51 light sources 10 may be included, the 51 light sources 10 being arranged at-18 °, -17.5 °, -17 °, -16.5 °, -16 °, -15.5 °, -15 °, -14.5 °, -14 °, -13.5 °, -13 °, -12.5 °, -12 °, -11.5 °, -11 °, -10.5 °, -10 °, -9.5 °, -9 °, -8.5 °, -8 °, -7.5 °, -7 °, -6.5 °, -6 °, 0 °, 6.5 °,7 °, 7.5 °, 8 °, 8.5 °, 9,5 °, -9,5 °, respectively, with respect to the optical axis of the entrance face of the periscope camera module to be detected, 9.5 °, 10 °, 10.5 °, 11 °, 11.5 °, 12 °, 12.5 °, 13 °, 13.5 °, 14 °, 14.5 °, 15 °, 15.5 °, 16 °, 16.5 °, 17 °, 17.5 °, 18 °. That is, the 51 light sources 10 are symmetrically disposed within a range of (-18 °, -6 °) } {0 ° } [ (6 °, 18 °) with respect to the optical axis of the incident surface of the periscopic imaging module to be inspected, respectively, wherein the light source angles of two light sources closest to the light source at the center of symmetry (i.e., the central light source) are ± 6 °, and the other adjacent light sources 10 are spaced 0.5 ° apart.

An operator can manually analyze the generated image by checking the image and judge whether stray light exceeding a standard range is detected or not so as to determine whether the detected periscopic camera module meets the quality requirement or not.

According to the stray light detection apparatus for detecting stray light of the motor of the periscopic camera module according to the above exemplary embodiment of the present application, it is only necessary to irradiate the incident surface of the periscopic camera module with the light source of a specific angle within the range of generating stray light, and it is possible to detect whether the periscopic camera module is qualified.

Moreover, according to the stray light detection apparatus for detecting stray light of the motor of the periscopic camera module according to the above exemplary embodiment of the present application, light sources at other angles in the middle region in the range where stray light is generated are removed, and detection can be performed more quickly and simply.

In the stray light detecting apparatus for detecting stray light of the motor of the periscopic camera module according to certain exemplary embodiments of the present application, for example, as shown in fig. 2, an image transmission module 20 and an image analysis module 30 may be further included. The image transmission module 20 can be connected to the periscopic camera module 100 to be detected. The image analysis module 30 may be conventional image analysis hardware, software, or a combination thereof. For example, image analysis software may include, for example, imatest, halcon, matlab. The image transmission module 20 may transmit the image generated by the periscopic camera module to be detected 100 to the image analysis module 30, and the image analysis module 30 may analyze the image generated by the periscopic camera module to be detected (e.g., by a photosensitive chip in the periscopic camera module to be detected) to generate the detection data. According to some exemplary embodiments of the present application, the image analysis module 30 may also be configured to record the angle of the light source 10 with respect to the optical axis of the incident surface of the periscopic module to be detected at the same time as the image generated by the periscopic module to be detected. It will be appreciated by those skilled in the art that, in certain exemplary embodiments, the analysis of the generated image may also be manually attended by a human worker, which is included within the functionality of the image analysis module 30 and is included within the scope of the present application.

In this way, stray light detection apparatus according to certain exemplary embodiments of the present application can analyze an image, improving the accuracy of the analysis.

In the stray light detecting apparatus for detecting stray light of the motor of the periscopic camera module according to some exemplary embodiments of the present application, the plurality of light sources may be individually controlled by software and an electrically controlled switch to emit light, respectively. In an exemplary embodiment, a plurality of light sources 10 are controlled in parallel by wires. For example, according to the operation time of other components, such as a photosensitive chip in the periscopic camera module to be detected, the software can be programmed to set the electric control switch to turn off the currently-emitted light source and turn on the next light source to emit light at regular intervals, so that the image capturing module can respectively acquire the image of each light source at different time periods.

In this way, the stray light detection apparatus for detecting stray light of a motor of a periscopic camera module according to some exemplary embodiments of the present application can improve switching rates of a plurality of light sources at different angles, can improve detection efficiency, and saves detection time compared to the prior art.

In the exemplary embodiment shown in fig. 2, the plurality of light sources 10 are fixed on the periscopic camera module with the incident surface of the periscopic camera module facing upward, i.e., the plurality of light sources 10 illuminate the incident surface of the periscopic camera module from above. It should be noted that this is merely illustrative, and the scope of the present application is not limited thereto. For example, the position arrangement of the plurality of light sources 10 and the periscopic camera module may be arranged in other directions relative to the working platform of the stray light detection apparatus, that is, may be arranged on the working platform of the stray light detection apparatus in other directions, for example, see fig. 4 which will be described in detail below.

In the exemplary embodiment shown in fig. 2, a stray light detecting apparatus for detecting stray light of a motor of a periscopic camera module according to some exemplary embodiments of the present application may include a stage 40 and a periscopic camera module carrier 50 disposed on a top surface of the stage 40. It should be noted that, since the periscopic camera module 100 and the image transmission module 20 are connected and disposed on the image transmission module 20 in the exemplary embodiment shown in fig. 2, the periscopic camera module carrier 50 shown in fig. 2 is shown to carry the image transmission module 20, but it can be understood by those skilled in the art that it is essentially used to carry and fix the periscopic camera module 100. Because the periscopic camera module bearing seat 50 is provided, the position of the periscopic camera module to be detected 100 is fixed, so that the plurality of light sources 10 can be arranged on the table-board of the workbench 40 at a preset angle relative to the reference line of the periscopic camera module bearing seat 50 (i.e. the optical axis of the incident plane of the periscopic camera module to be detected).

In contrast to fig. 2, in the exemplary embodiment shown in fig. 4, a plurality of light sources 10 illuminates the periscopic camera module in the horizontal direction. And, a plurality of light sources 10 can be symmetrical setting in semicircular circumference, and the point of intersection of the incident plane and the optical axis of the incident plane of the periscopic camera module that awaits measuring is set up in centre of a circle department. For example, the 27 light sources 10 in the above-described exemplary embodiment are symmetrically disposed on the circumference of a semicircle, and the intersection of the optical axis of the incident surface and the incident surface is disposed at the center of the circle, wherein the light source 10 at the center of symmetry on the circumference (i.e., the middle light source 10) is disposed at 0 ° with respect to the optical axis of the incident surface (may be simply referred to as, the angle of the middle light source 10 is 0 °).

In the stray light detecting apparatus for detecting stray light of the motor of the periscopic camera module according to some exemplary embodiments of the present application, by disposing the light source 10 on the circumference as exemplarily shown in fig. 4, the intersection point of the optical axis of the incident surface and the incident surface is disposed at the center of the circle, the arrangement of the light source may be facilitated. It should be noted that this circumferential arrangement is particularly advantageous over other arrangements for equipment that needs to be provided at approximately-90, 90.

As shown in fig. 4, the stray light detecting apparatus for detecting stray light of a motor of a periscopic camera module according to some exemplary embodiments of the present application may include a table 40 and a periscopic camera module carrier 50' disposed on a table top of the table 40. The periscopic camera module bearing seat 50' can be configured to bear the periscopic camera module 100 to be detected. It should be noted that, since the periscopic camera module 100 and the image transmission module 20 are connected and disposed on the image transmission module 20 in the exemplary embodiment shown in fig. 4, the periscopic camera module carrier 50' shown in fig. 2 is shown as carrying the image transmission module 20, but it can be understood by those skilled in the art that it is essentially used to carry and fix the periscopic camera module 100. According to these exemplary embodiments, since the periscopic camera module bearing seat 50 'is provided, the position of the periscopic camera module to be detected 100 is fixed, so that the plurality of light sources 10 can be disposed on the top surface of the worktable 40 at a preset angle with respect to the reference line of the periscopic camera module bearing seat 50' (i.e. the optical axis of the incident surface of the periscopic camera module to be detected). For example, in an exemplary embodiment, the light source 10 may be soldered directly to the table top of the table 40. For example, the 27 light sources in the above exemplary embodiment may be directly welded on the table top of the table 40, and the angles with respect to the reference line of the periscopic camera module carrier 50' (i.e. the optical axis of the incidence plane of the periscopic camera module to be examined) are-18 °, -17 °, -16 °, -15 °, -14 °, -13 °, -12 °, -11 °, -10 °, -9 °, -8 °, -7 °, -6 °, 0 °,6 °,7 °, 8 °, 9 °, 10 °, 11 °, 12 °, 13 °, 14 °, 15 °, 16 °, 17 °, 18 °, respectively.

As shown in fig. 4, the stray light detecting apparatus for detecting stray light of a motor of a periscopic camera module according to some exemplary embodiments of the present application may further include a plurality of light source holders 60, and the plurality of light source holders 60 are disposed on the stage of the worktable 40. The plurality of light source carriers 60 may be configured to carry a plurality of light sources 10. For example, the light source bearing seats may be symmetrically and/or equally spaced around a semi-circular circumference, with the reference line of the periscopic camera module bearing seat 60 being located at the center of the circle. For example, the 179 light source holders 60 may be set in a range of (-90 °, 90 °) with respect to the reference line of the periscopic camera module holder 60 (i.e., the optical axis of the incident surface of the periscopic camera module to be detected), and the adjacent light source holders 60 may be spaced by 1 °. In this way, the worker can flexibly install the light source 10 at a desired angle according to actual needs. In the exemplary embodiment described above, for example, 27 light sources may be mounted on the light source carrier 60 at angles of-18 °, -17 °, -16 °, -15 °, -14 °, -13 °, -12 °, -11 °, -10 °, -9 °, -8 °, -7 °, -6 °, 0 °,6 °,7 °, 8 °, 9 °, 10 °, 11 °, 12 °, 13 °, 14 °, 15 °, 16 °, 17 °, 18 °, respectively.

In addition, as shown in fig. 4, a plurality of light source carriers 60 may be provided independently of each other. In this way, calibration and post-maintenance of each light source 10 can be facilitated.

As shown in fig. 5, the method for detecting stray light of the motor of the periscopic camera module may include:

s10, placing a periscopic camera module to be detected;

s20 sets up a plurality of light sources, the plurality of light sources being at a plurality of angles with respect to the optical axis of the incident surface of the periscopic camera module to be detected, the plurality of light sources being configured to emit light respectively to illuminate the lens, wherein the optical center of a single light source is incident light at the center of the light source with respect to a line connecting the intersection of the incident surface and the optical axis, the angle being an angle between the incident light at the center and the optical axis of the incident surface, and the periscopic camera module to be detected being configured to image the incident light to generate an image.

Thereafter, the operator can judge whether or not the flare is generated by observing the image.

According to the method for detecting stray light of the motor of the periscopic camera module according to the exemplary embodiment of the present application, the plurality of light sources 10 are arranged at a plurality of precise angles in advance, so that precise detection of precise angles can be performed compared to the manner of holding the light sources in the prior art.

Also, the method according to the above-described exemplary embodiment of the present application can generate an image with improved accuracy compared to the prior art in which stray light is observed by the human eye.

In the stray light detection method for detecting a periscopic camera module according to the exemplary embodiment of the present application, the plurality of light sources may be arranged in a linear distribution and distributed symmetrically with respect to the incident plane light axis.

Furthermore, the plurality of light sources can be set to be parallel to the plane where the photosensitive chip of the periscopic camera module to be detected is located, and the plane where the central incident light of each light source is located is parallel to the plane where the photosensitive chip of the periscopic camera module to be detected is located, so that the light of the light sources can be ensured to irradiate the edge of the photosensitive chip of the periscopic camera module to be detected as far as possible.

According to some exemplary embodiments of the present application, 179 light sources may be provided, and the 179 light sources may be respectively provided at-90 °, -89 °, -88 °, -87 °, -86 °, -85 °, -84 °, -83 °, -82 °, -81 °, -80 °, -79 °, -78 °, -77 °, -76 °, -75 °, -74 °, -73 °, -72 °, -71 °, -70 °, -69 °, … -10 °, -9, -8 °, -7 °, -6 °, -5 °, -4 °, -3 °, -2 °, -1 °, 0 °, 2 °, 3 °,0 °,1 °, 2 °, 3 °,10 °, 4 °, 5 °,6 °,7 °, 8 °, 9 °, 10 °, …,69 °, 70 °, 71 °, 72 °, 73 °, 74 °, 75 °, 76 °, 77 °, 78 °,79 °, 80 °, 81 °, 82 °, 83 °, 84 °, 85 °, 86 °, 87 °, 88 °, 89 °, 90 °, wherein "+" and "-" respectively denote angles on both sides of the optical axis of the incident surface. That is, the 179 light sources may be arranged within a range of (-90 °, 90 °) with respect to the optical axis of the incident surface of the periscopic imaging module, with an interval of 1 ° between adjacent light sources. Through such light source setting mode, under the condition that the angular accuracy meets the requirements, can basically realize with prior art light source use the module of making a video recording as the center circular motion (namely, use periscopic to make a video recording the module and rotate 180 degrees for the center) the similar purpose. It will be appreciated by those skilled in the art that more light sources may be provided with greater angular accuracy requirements. For example, according to some exemplary embodiments of the present application, 359 light sources may be provided, and the 359 light sources may be respectively provided at-90 °, -89.5 °, -88.5 °, -88 °, -87.5 °, -87 °, -86.5 °, -86 °, -85.5 °, -85 °, -84.5 °, -84 °, -83.5 °, -83 °, -82.5 °, -82 °, -81.5 °, -81 °, -80.5 °, -80 °, -79.5 °, -79 °, …, -10 °, -9.5 °, -9 °, -8.5 °, -8 °, -7.5 °, -7 °, -6.5 °, -6 °, -5.5 °, -5 °,5 °, -4.5 °, -4 °, -3.5 °, -3 °, -2.5 °, -2 °, -1.5 °, -1 °, -0.5 °, 0 °, 0.5 °, 1 °, 1.5 °, 2 °, 2.5 °, 3 °, 3.5 °, 4 °, 4.5 °, 5 °, 5.5 °,6 °, 6.5 °,7 °, 7.5 °, 8 °, 8.5 °, 9 °, 9.5 °, 10 °, …,79 °, 79.5 °, 80 °, 80.5 °, 81 °, 81.5 °, 82 °, 82.5 °, 83 °, 83.5 °, 84 °, 84.5 °, 85 °, 85.5 °, 86 °, 86.5 °, 87 °, 87.5 °, 88 °, 88.5 °, 89 °, 89.5 °, 90 °. That is, the 359 light sources may be respectively disposed within a range of (-90 °, 90 °) with respect to the optical axis of the incident surface of the periscopic camera module, with an interval of 0.5 ° between the adjacent light sources. Those skilled in the art will appreciate that any number of light sources can be provided with sufficient accuracy to achieve substantially the same purpose as prior art light sources that are circular about (i.e., rotate 180 ° about) a periscopic camera module.

As described above, in the periscopic camera module, the generation of stray light at a particular angle is caused by the particular structure of the motor in the camera module. The inventor researches and finds that the periscopic camera module can be judged to meet the quality requirement as long as the stray light beyond the standard range is not detected at certain specific angles.

In the method for detecting motor stray light of a periscope camera module according to an exemplary embodiment of the present application, 27 light sources 10 may be provided, the 27 light sources 10 being respectively disposed at-18 °, -17 °, -16 °, -15 °, -14 °, -13 °, -12 °, -11 °, -10 °, -9 °, -8 °, -7 °, -6 °, 0 °,6 °,7 °, 8 °, 9 °, 10 °, 11 °, 12 °, 13 °, 14 °, 15 °, 16 °, 17 °, 18 °, wherein "+," respectively represent angles on both sides of the optical axis of the incidence plane, with respect to the optical axis (shown by a dotted line in fig. 2) of the incidence plane of the periscope camera module 100 to be detected. That is, the 27 light sources 10 are symmetrically disposed, and are respectively disposed in the range of (-18 °, -6 °) { (0 ° } [ (6 °, 18 °) with respect to the optical axis of the incident surface of the periscopic imaging module 100 to be inspected, wherein the light source angles of the two light sources closest to the light source at the center of symmetry (i.e., the middle light source) are ± 6 °, and the other adjacent light sources 10 are spaced 1 ° apart.

In a method for detecting periscopic camera modules according to another exemplary embodiment of the present application, 51 light sources 10 may be provided, the 51 light sources 10 being respectively arranged at-18 °, -17.5 °, -17 °, -16.5 °, -16 °, -15.5 °, -15 °, -14.5 °, -13.5 °, -13 °, -12.5 °, -12 °, -11.5 °, -11 °, -10.5 °, -10 °, -9.5 °, -9 °, -8.5 °, -8 °, -7.5 °, -7 °, -6.5 °, -6 °, 0 °, 6.5 °, 7.5 °, 8 °, 8.5 °, 9 °, 9.5 °, 10.5 °,10, 10.5 °, 11 °, 11.5 °, 12 °, 12.5 °, 13 °, 13.5 °, 14 °, 14.5 °, 15 °, 15.5 °, 16 °, 16.5 °, 17 °, 17.5 °, 18 °. That is, the 51 light sources 10 are symmetrically disposed within a range of (-18 °, -6 °) } {0 ° } [ (6 °, 18 °) with respect to the optical axis of the incident surface of the periscopic imaging module to be inspected, respectively, wherein the light source angles of two light sources closest to the light source at the center of symmetry (i.e., the central light source) are ± 6 °, and the other adjacent light sources 10 are spaced 0.5 ° apart.

An operator can manually analyze the generated image by checking the image to judge whether stray light exceeding a standard range is detected or not so as to determine whether the detected periscopic camera module meets the quality requirement or not.

According to the stray light detection method for detecting stray light of the motor of the periscopic camera module in the above exemplary embodiment of the present application, it is only necessary to irradiate the incident surface of the periscopic camera module with the light source of a specific angle within the range of generating stray light, and whether the periscopic camera module is qualified or not can be detected.

In addition, according to the stray light detection method for detecting stray light of the motor of the periscopic imaging module according to the exemplary embodiment of the present application, light sources at other angles in the middle region in the range where the stray light is generated are removed, and the detection can be performed more quickly and simply.

As shown in fig. 5, the method for detecting stray light of a motor of a periscopic camera module according to the above exemplary embodiment of the present application may further include:

s30, transmitting the image generated by the periscopic camera module to be detected to an image analysis module through an image transmission module; and analyzing the generated image by an image analysis module to generate detection data.

In this way, the stray light detection method according to some exemplary embodiments of the present application can analyze an image, improving the accuracy of the analysis.

According to a stray light detection method for detecting stray light of a motor of a periscopic camera module according to some exemplary embodiments of the present application, the plurality of light sources may be configured to emit light respectively including individually controlling the plurality of light sources to emit light respectively by software and an electrically controlled switch.

In this way, the stray light detection method for detecting stray light of the motor of the periscopic camera module according to some exemplary embodiments of the present application can improve the switching rate of the plurality of light sources at different angles, and compared with the prior art, can improve the detection efficiency and save the detection time.

According to a stray light detection method for detecting stray light of a motor of a periscopic camera module according to some exemplary embodiments of the present application, a plurality of light sources may be disposed on a circumference, and the periscopic camera module may be placed such that an intersection point of an optical axis of an incident surface and the incident surface is disposed at a center of a circle. In this way, the arrangement of the light sources may be facilitated. It should be noted that this circumferential arrangement is particularly advantageous for methods requiring close to-90 °, 90 ° arrangements, as compared to other arrangements.

The stray light detection method for detecting stray light of a motor of a periscopic camera module according to some exemplary embodiments of the present application may further include: setting a workbench; and arranging a periscopic camera module bearing seat on the table top of the workbench, wherein the periscopic camera module bearing seat is configured to bear the periscopic camera module to be detected. According to these exemplary embodiments, for example, referring to fig. 4, since the periscopic camera module bearing seat 50 'is provided, the position of the periscopic camera module to be detected is fixed, so that the plurality of light sources 10 can be arranged on the table top of the worktable 40 at a preset angle with respect to the reference line of the periscopic camera module bearing seat 50' (i.e. the optical axis of the incident surface of the periscopic camera module to be detected).

The stray light detection method for detecting stray light of a motor of a periscopic camera module according to some exemplary embodiments of the present application may further include: the light source bearing seat is arranged on the table top of the workbench, wherein the light source bearing seat is configured to bear a plurality of light sources. For example, the 179 light source carriers 60 may be respectively disposed within a range of (-90 °, 90 °) with respect to the reference line of the periscopic camera module carrier (i.e. the optical axis of the incident surface of the periscopic camera module to be detected), and the adjacent light source carriers may be spaced by 1 °. By the mode, the staff can flexibly install the light source at a required angle according to actual needs.

In addition, a plurality of light source carrying seats can be arranged independently of each other. In this way, calibration and post-maintenance of each light source can be facilitated.

It should be noted that the stray light detection method for detecting the stray light of the motor of the periscopic camera module according to some exemplary embodiments of the present application described above corresponds substantially to the stray light detection apparatus for detecting the stray light of the motor of the periscopic camera module according to some exemplary embodiments of the present application described above, and thus some of the repeated description thereof is omitted for the sake of brevity.

FIG. 6 schematically shows a block diagram of a stray light detecting apparatus according to an exemplary embodiment of the present application. The stray light detection apparatus can be used to detect stray light of various lenses.

As shown in fig. 6, the stray light detecting apparatus according to an exemplary embodiment of the present application may include a plurality of light sources 10 and an image capturing module 70.

The plurality of light sources 10 (shown as 15 in fig. 6) may be disposed at a plurality of angles with respect to a central axis of the lens 200 (shown as a dotted line in fig. 6). Here, a connection line of the optical centers of the individual light sources 10 with respect to the intersection point of the lens 200 and the central axis is the central incident light of the light source 10, and the angle is the angle between the central incident light of the light source 10 and the central axis of the lens 200. The plurality of light sources 10 may emit light to illuminate the lens 200, respectively, and thus, the light emitted from the plurality of light sources 10 is illuminated to the lens 200 at a plurality of angles with respect to the central axis of the lens 200. According to certain exemplary embodiments of the present application, the light source 10 may be, for example, an incandescent lamp, a light emitting diode, a laser diode, or any other suitable light source.

It should be noted that the angles shown in fig. 6 are only exemplary, and the angles may be set according to actual requirements. Also, it can be understood by those skilled in the art that although the 15 light sources 10 are schematically illustrated in the drawings, this is merely illustrative and the scope of the present application is not limited thereto. For example, according to certain exemplary embodiments of the present application, 179 light sources may be provided, and the 179 light sources may be respectively provided at-90 °, -89 °, -88 °, -87 °, -86 °, -85 °, -84 °, -83 °, -82 °, -81 °, -80 °, -79 °, -78 °, -77 °, -76 °, -75 °, -74 °, -73 °, -72 °, -71 °, -70 °, -69 °, … -10 °, -9, -8 °, -7 °, -6 °, -5 °, -4 °, -3 °, -2 °, -1 °, 0 °, 1 °, 2 °, 3 °, 4 °, 5 °,6 °,7 °, 8 °, 9 °, 10 °, …,69 °, 70 °, 71 °, 72 °, 73 °, 74 °, 75 °, 76 °, 77 °, 78 °,79 °, 80 °, 81 °, 82 °, 83 °, 84 °, 85 °, 86 °, 87 °, 88 °, 89 °, 90 °. That is, the 179 light sources may be respectively disposed within a range of (-90 °, 90 °) with an interval of 1 ° between adjacent light sources with respect to the central axis of the lens of the camera module. With such a light source arrangement, the similar object to that of the prior art in which the light source makes a circular motion around the lens (i.e., rotates 180 ° around the lens) can be basically achieved, with the angular accuracy meeting the requirement. It will be appreciated by those skilled in the art that more light sources may be provided with greater angular accuracy requirements. For example, according to certain exemplary embodiments of the present application, 359 light sources may be provided, and the 359 light sources may be respectively provided at-90 °, -89.5 °, -89 °, -88.5 °, -88 °, -87.5 °, -87 °, -86.5 °, -86 °, -85.5 °, -85 °, -84.5 °, -84 °, -83.5 °, -83 °, -82.5 °, -82 °, -81.5 °, -81 °, -80.5 °, -80 °, -79.5 °, -79 °, …, -10 °, -9.5 °, -9 °, -8.5 °, -8 °, -7.5 °, -7 °, -6.5 °, -6 °, -5.5 °, -5,5 °, -5, -4.5 °, -4 °, -3.5 °, -3 °, -2.5 °, -2 °, -1.5 °, -1 °, -0.5 °, 0 °, 0.5 °, 1 °, 1.5 °, 2 °, 2.5 °, 3 °, 3.5 °, 4 °, 4.5 °, 5 °, 5.5 °,6 °, 6.5 °,7 °, 7.5 °, 8 °, 8.5 °, 9 °, 9.5 °, 10 °, …,79 °, 79.5 °, 80 °, 80.5 °, 81 °, 81.5 °, 82 °, 82.5 °, 83 °, 83.5 °, 84 °, 84.5 °, 85 °, 85.5 °, 86 °, 86.5 °, 87 °, 87.5 °, 88 °, 88.5 °, 89.5 °, 90 °. That is, the 359 light sources may be respectively disposed within a range of (-90 °, 90 °) with an interval of 0.5 ° between adjacent light sources with respect to the central axis of the lens of the camera module. It will be appreciated by those skilled in the art that any number of light sources may be provided with sufficient accuracy to achieve substantially the same goal as the prior art light sources are rotated 180 around the lens.

After the light source 10 emits light to illuminate the lens 200, the image capturing module 70 may receive the light passing through the lens to generate an image. The image capturing module 70 may be any conventional image capturing device. According to some exemplary embodiments of the present disclosure, the image capturing module 70 may be configured to record an angle of the light source 10 relative to a central axis of a lens of the camera module at the time of generating the image for subsequent analysis.

According to the stray light detecting apparatus of certain exemplary embodiments of the present application, the plurality of light sources 10 are previously arranged at a plurality of precise angles, thereby enabling precise angle detection of the lens, compared to the way of holding the light sources in the prior art.

Furthermore, stray light detection apparatus according to certain exemplary embodiments of the present application can be configured to generate an image with improved accuracy over prior art techniques in which the lens is observed by the human eye for stray light generation.

Also, as described above, the stray light detecting apparatus according to some exemplary embodiments of the present application can set a plurality of light sources according to the requirement of the angular accuracy (for example, as described above, 179 light sources may be set in the range of (-90 °, 90 °) with respect to the central axis of the lens of the camera module, respectively, and the interval between adjacent light sources is 1 °), and by such a light source setting manner, it is possible to basically achieve the similar effect as that of the prior art in which the light sources make a circular motion centering on the lens.

In some exemplary embodiments, the plurality of light sources 10 may be provided independently of each other. In this way, calibration and post-maintenance of each light source 10 can be facilitated.

As shown in fig. 6, the stray light detecting apparatus according to an exemplary embodiment of the present application may further include an image analyzing module 30. After the image capture module 70 generates the image, the image may be transmitted to the image analysis module 30. Image analysis module 30 may analyze the generated image to generate detection data, e.g., to determine whether motor stray light is present. The image analysis module 30 may be conventional image analysis hardware, software, or a combination thereof. For example, image analysis software may include, for example, imatest, halcon, matlab. According to some exemplary embodiments of the present disclosure, the image analysis module 30 may also be configured to record an angle of the light source 10 relative to a central axis of a lens of the camera module at the time while receiving the image generated by the image capture module 70. It will be appreciated by those skilled in the art that, in certain exemplary embodiments, the analysis of the generated image may also be manually attended by a human worker, which is included within the functionality of the image analysis module 30 and is included within the scope of the present application.

Stray light detection apparatus according to certain exemplary embodiments of the present application can be arranged to analyze images, improving the accuracy of the analysis.

In the stray light detecting apparatus according to certain exemplary embodiments of the present application, the plurality of light sources 10 may be individually controlled to emit light by software and an electrically controlled switch, respectively. In an exemplary embodiment, a plurality of light sources 10 are controlled in parallel by wires. For example, according to the operation time of other components such as the image capturing module 70, the software can be programmed to set the electrical control switch to turn off the currently-illuminated light source and turn on the next light source to illuminate at regular intervals, so that the image capturing module 70 can respectively capture the image of each light source.

In this way, the stray light detection apparatus according to some exemplary embodiments of the present application can improve the switching rate of a plurality of light sources at different angles, and can improve detection efficiency and save detection time compared to the prior art.

In the stray light detecting apparatus according to some exemplary embodiments of the present application, the plurality of light sources 10 may be symmetrically disposed at the circumference of a semicircle, and the intersection point of the lens to be detected 200 and the central axis is disposed at the center of the circle. For example, in the exemplary embodiment in fig. 6, 15 light sources 10 are symmetrically disposed on a semicircular circumference, and an intersection point of the lens to be detected 200 and the central axis is disposed at a center point, wherein the light source 10 at the center of symmetry on the circumference (i.e., the middle light source 10) is disposed at 0 ° with respect to the central axis of the lens to be detected 200 (may be simply referred to as, the angle of the middle light source 10 is 0 °).

In the stray light detecting apparatus according to some exemplary embodiments of the present application, the plurality of light sources 10 may be disposed at equal intervals on the circumference of a semicircle with the lens to be detected disposed at the center of the circle. For example, in the exemplary embodiment in fig. 6, 15 light sources 10 are disposed at equal intervals on the circumference of a semicircle, and a lens to be detected is disposed at the center of the circle.

In the stray light detecting apparatus according to certain exemplary embodiments of the present application, by disposing the light sources 10 on a circle with the lens disposed at the center of the circle as exemplarily shown in fig. 6, the arrangement of the light sources may be facilitated, especially for large angles (e.g., -90 °, 90 °). However, this is merely illustrative, and the scope of the present application is not limited thereto. For example, the plurality of light sources 10 may be arranged linearly to form a linear array; alternatively, the plurality of light sources 10 may be arranged in any arrangement, which is included in the scope of the present application.

As shown in fig. 6, a stray light detecting apparatus according to some exemplary embodiments of the present application may include a table 40 and a lens holder 50 ″ provided on a floor of the table 40. The lens holder 50 "can be configured to hold the lens 200 to be inspected. According to these exemplary embodiments, since the lens holder 50 ″ is present, the position of the lens 200 to be inspected is fixed, so that the plurality of light sources 10 can be disposed on the floor of the work table 40 at a predetermined angle with respect to the central axis of the lens holder 50 ″ (i.e., the central axis of the lens 200 to be inspected). For example, in an exemplary embodiment, the light source 10 may be soldered directly to the table top of the table 40. In the exemplary embodiment as described above, for example, the 179 light sources may be respectively disposed within a range of (-90 °, 90 °) with respect to the central axis of the lens holder 50 "(i.e., the central axis of the lens 200 to be detected), with an interval of 1 ° between the adjacent light sources.

As shown in fig. 6, the stray light detecting apparatus according to some exemplary embodiments of the present application may further include a plurality of light source carriers 60, the plurality of light source carriers 60 being disposed on the table top of the work table 40. The plurality of light source carriers 60 may be configured to carry a plurality of light sources 10. For example, referring to the exemplary embodiment in fig. 6, the light source carriers may be symmetrically and/or equally spaced about the circumference of a semicircle with the lens carrier 50 "disposed at the center of the circle. In this way, the worker can mount the light source 10 at a desired angle according to actual needs. In the exemplary embodiment as described above, for example, 179 light source carriers 60 may be respectively disposed within a range of (-90 °, 90 °) with respect to the central axis of the lens carrier 50 "(i.e., the central axis of the lens 200 to be inspected), with a 1 ° interval between the adjacent light source carriers 60.

In addition, as shown in fig. 6, a plurality of light source carriers 60 may be provided independently of each other. In this manner, calibration and post-maintenance of each light source 10 can be facilitated, as described above.

The above description is only a preferred embodiment of the present application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. Stray light check out test set for detect the stray light of the motor of the module of making a video recording, its characterized in that includes:

the light sources are arranged at a plurality of angles relative to an optical axis of an incidence surface of the camera module to be detected, the angles are all positioned in a range of (-18 degrees, -6 degrees) and (0 degree) and (n) (6 degrees and 18 degrees), and the + and-respectively represent angles on two sides of the optical axis of the incidence surface; the plurality of light sources are configured to respectively emit light to irradiate an incident surface of the camera module to be detected, wherein a connecting line of an optical center of a single light source relative to an intersection point of the incident surface and an optical axis is light source center incident light, an angle is an included angle between the center incident light and the optical axis of the incident surface, and the camera module to be detected is configured to image the incident light to generate an image; the camera module to be detected is a periscopic camera module.

2. A stray light detecting apparatus according to claim 1, wherein said plurality of light sources are linearly distributed and are distributed symmetrically with respect to the incident plane light axis.

3. A stray light detecting apparatus according to claim 1, wherein the connecting lines of the plurality of light sources are parallel to a plane on which the photosensitive chip of the module to be detected is located, and a plane on which the central incident light of each light source is located is parallel to a plane on which the photosensitive chip of the module to be detected is located.

4. A stray light detecting apparatus according to claim 1, wherein said plurality of angles includes: -18 °, -17 °, -16 °, -15 °, -14 °, -13 °, -12 °, -11 °, -10 °, -9 °, -8 °, -7 °, -6 °, 0 °,6 °,7 °, 8 °, 9 °, 10 °, 11 °, 12 °, 13 °, 14 °, 15 °, 16 °, 17 °, 18 °.

5. A stray light detecting apparatus according to claim 1, further comprising:

the image transmission module is connected with the camera module to be detected; and

the image analysis module is configured to analyze the image generated by the camera module to be detected so as to generate detection data.

6. A stray light detection apparatus according to claim 1, wherein the angular accuracy comprises ± 0.1 °.

7. A stray light detecting apparatus according to claim 1, wherein the plurality of light sources being configured to emit light individually comprises the plurality of light sources being individually controlled to emit light individually by software and an electrically controlled switch.

8. A stray light detecting apparatus according to claim 1, wherein the plurality of light sources are disposed on a circumference, and the camera module to be detected is placed such that an intersection of the incident surface and the optical axis is disposed at a center of the circumference.

9. A stray light detection apparatus according to any one of claims 1 to 8, further comprising:

a work table; and

the camera module bearing seat is arranged on the table board of the workbench and is configured to bear the camera module to be detected.

10. A stray light detecting apparatus according to claim 9, further comprising:

and the light source bearing seat is arranged on the table top of the workbench and is configured to bear the plurality of light sources.

11. A method for detecting stray light of a motor of a camera module, comprising:

placing a camera module to be detected;

arranging a plurality of light sources, wherein the light sources are arranged at a plurality of angles relative to the optical axis of the incidence surface of the camera module to be detected, the angles are all positioned in the range of (-18 degrees, -6 degrees) n {0 degrees } n (6 degrees, 18 degrees), and the plus and minus respectively represent the angles at two sides of the optical axis of the incidence surface; the plurality of light sources are configured to respectively emit light to irradiate an incident surface of the camera module to be detected, wherein a connecting line of an optical center of a single light source relative to an intersection point of the incident surface and an optical axis is light source center incident light, an angle is an included angle between the center incident light and the optical axis of the incident surface, and the camera module to be detected is configured to image the incident light to generate an image; the camera module to be detected is a periscopic camera module.

12. The method of claim 11, wherein the plurality of angles comprises: -18 °, -17 °, -16 °, -15 °, -14 °, -13 °, -12 °, -11 °, -10 °, -9 °, -8 °, -7 °, -6 °, 0 °,6 °,7 °, 8 °, 9 °, 10 °, 11 °, 12 °, 13 °, 14 °, 15 °, 16 °, 17 °, 18 °.

13. The method of claim 11, further comprising:

transmitting the image generated by the camera module to be detected to an image analysis module through an image transmission module; and

the generated image is analyzed by an image analysis module to generate detection data.

14. The method of claim 11, wherein the plurality of light sources being configured to emit light individually comprises individually controlling the plurality of light sources to emit light individually via software and an electronically controlled switch.

15. The method of claim 11, wherein the plurality of light sources are arranged on a circumference, and the camera module is positioned such that an intersection of the incident surface and the optical axis is disposed at a center of the circumference.

16. The method according to any one of claims 11-15, further comprising:

setting a workbench; and

the table board of the workbench is provided with a camera module bearing seat, wherein the camera module bearing seat is configured to bear the camera module to be detected.

17. The method of claim 16, further comprising:

the table-board of the workbench is provided with a plurality of light source bearing seats, wherein the light source bearing seats are configured to bear the light sources.