CN111896232A - Optical machine module testing method, equipment, system and computer readable storage medium - Google Patents
Optical machine module testing method, equipment, system and computer readable storage medium Download PDFInfo
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- CN111896232A CN111896232A CN202011054515.1A CN202011054515A CN111896232A CN 111896232 A CN111896232 A CN 111896232A CN 202011054515 A CN202011054515 A CN 202011054515A CN 111896232 A CN111896232 A CN 111896232A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G01M11/0257—Testing optical properties by measuring geometrical properties or aberrations by analyzing the image formed by the object to be tested
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0242—Testing optical properties by measuring geometrical properties or aberrations
- G01M11/0278—Detecting defects of the object to be tested, e.g. scratches or dust
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Abstract
The invention discloses a testing method of an optical-mechanical module. The optical-mechanical module testing method is applied to an optical-mechanical module testing system, the optical-mechanical module testing system comprises optical-mechanical module testing equipment and a testing camera bellows, and the optical-mechanical module testing method comprises the following steps: the optical machine module testing equipment acquires a first optical parameter of the optical machine module when the optical machine module is projected in the testing camera bellows through an optical performance sensing chip in the testing camera bellows; obtaining a second optical parameter according to the first optical parameter and a preset mapping relation; and testing the performance of the optical-mechanical module according to the second optical parameter to obtain a test result. The invention also discloses optical machine module testing equipment, a system and a computer readable storage medium. The invention can improve the testing efficiency of the performance test of the optical-mechanical module and improve the accuracy of the test result.
Description
Technical Field
The present invention relates to the field of optical testing technologies, and in particular, to a method, an apparatus, a system, and a computer-readable storage medium for testing an optical module.
Background
The optical module is a main body of a DLP (Digital Light Processing) projector. In the production and manufacturing process of the DLP projector, the performance of the optical module is usually tested to ensure the product quality of the DLP projector.
At present, the performance test of the optical-mechanical module generally needs to be carried out in a darkroom, and a screen with a size larger than the projection size needs to be installed for carrying out a live-action test. Specifically, the image is projected onto the screen through the optical module, and then the optical performance values, such as illuminance, chromaticity, and color temperature, are tested by using the optical performance testing devices, such as CL200A (color illuminometer) and CL500A (spectral radiance illuminometer). The testing method has the advantages that the testing field is generally large, the testing process is manually controlled by an operator, and the testing result is easily influenced by the proficiency of the operator. Therefore, the performance testing method of the existing optical-mechanical module needs to improve the testing efficiency and the accuracy of the testing result.
Disclosure of Invention
The invention mainly aims to provide a testing method, equipment and system of an optical-mechanical module and a computer readable storage medium, aiming at improving the testing efficiency of the performance test of the optical-mechanical module and improving the accuracy of a testing result.
In order to achieve the above object, the present invention provides an optical-mechanical module testing method applied to an optical-mechanical module testing system, where the optical-mechanical module testing system includes an optical-mechanical module testing device and a testing camera bellows, and the optical-mechanical module testing method includes the following steps:
the optical machine module testing equipment acquires a first optical parameter of the optical machine module when the optical machine module is projected in the testing camera bellows through an optical performance sensing chip in the testing camera bellows;
obtaining a second optical parameter according to the first optical parameter and a preset mapping relation;
and testing the performance of the optical-mechanical module according to the second optical parameter to obtain a test result.
Optionally, the step of obtaining the second optical parameter according to the first optical parameter and a preset mapping relationship includes:
obtaining a second illumination and a second color coordinate according to the first illumination, the first color coordinate and a preset mapping relation;
and acquiring a preset shading numerical value, and performing multiplication operation on the second illumination and the preset shading numerical value to obtain a third illumination, wherein the second optical parameter comprises the second color coordinate and the third illumination.
Optionally, before the step of obtaining the second optical parameter according to the first optical parameter and the preset mapping relationship, the method further includes:
judging whether the first illumination is smaller than a preset threshold value or not;
if the first illumination is larger than or equal to a preset threshold, generating corresponding prompt information to prompt that the test environment is unqualified or the optical machine module has a light leakage phenomenon;
if the first illumination is smaller than a preset threshold, executing the following steps: and obtaining a second optical parameter according to the first optical parameter and a preset mapping relation.
Optionally, the step of testing the performance of the optical mechanical module according to the second optical parameter to obtain a test result includes:
calculating to obtain a third optical parameter according to the second optical parameter and a preset rule, wherein the third optical parameter comprises one or more of color temperature, uniformity and contrast;
and detecting whether the second optical parameter and the third optical parameter meet preset conditions or not so as to test the performance of the optical-mechanical module and obtain a test result.
Optionally, the optical mechanical module testing method further includes:
acquiring test data, wherein the test data comprises a camera obscura optical parameter measured by the optical performance perception chip and a normal optical parameter measured by projection under a normal condition;
and constructing and obtaining the preset mapping relation according to the optical parameters of the dark box and the normal optical parameters.
Optionally, the optical mechanical module testing method further includes:
acquiring a camera shooting image of a camera shooting device;
and comparing the image projected by the camera bellows with a preset standard image, and judging whether stains or dust exist in the optical machine module according to a comparison result.
In addition, in order to achieve the above object, the present invention further provides a testing apparatus for an optical mechanical module, the testing apparatus comprising: the testing method comprises a memory, a processor and an optical-mechanical module testing program which is stored on the memory and can run on the processor, wherein the optical-mechanical module testing program realizes the steps of the optical-mechanical module testing method when being executed by the processor.
In addition, in order to achieve the above object, the present invention further provides an optical mechanical module testing system, which includes: the test system comprises optical-mechanical module test equipment and a test camera bellows; wherein the content of the first and second substances,
the optical-mechanical module testing equipment is the optical-mechanical module testing equipment;
the testing camera bellows comprises a projection screen, an optical performance sensing chip embedded in the projection screen and a fixing tool arranged at a position opposite to the projection screen, wherein the fixing tool is used for fixing the optical-mechanical module;
the testing camera bellows is connected with the optical machine module testing equipment through the optical performance sensing chip and used for acquiring a first optical parameter through the optical performance sensing chip and sending the first optical parameter to the optical machine module testing equipment during testing.
Further, ray apparatus module test system still includes camera device, camera device with ray apparatus module test equipment communication connection, camera device is used for shooing the camera bellows projection image of ray apparatus module, and will camera bellows projection image send to ray apparatus module test equipment.
In addition, in order to achieve the above object, the present invention further provides a computer readable storage medium, where an optical mechanical module testing program is stored on the computer readable storage medium, and the optical mechanical module testing program, when executed by a processor, implements the steps of the optical mechanical module testing method described above.
The invention provides a testing method, equipment and a system of an optical-mechanical module and a computer readable storage medium, wherein the method is applied to the testing system of the optical-mechanical module, the testing system of the optical-mechanical module comprises testing equipment of the optical-mechanical module and a testing camera bellows, and the testing equipment of the optical-mechanical module obtains a first optical parameter of the optical-mechanical module when the optical-mechanical module is projected in the testing camera bellows through an optical performance sensing chip in the testing camera bellows; obtaining a second optical parameter according to the first optical parameter and a preset mapping relation; and testing the performance of the optical-mechanical module according to the second optical parameter to obtain a test result. According to the invention, the test camera bellows is arranged, the optical machine module is arranged in the test camera bellows for projection, then the first optical parameter is obtained through the optical performance sensing chip in the test camera bellows, the second optical parameter under the normal projection scene is obtained through processing and conversion, and further the performance test is carried out based on the second optical parameter, so that the automatic test of the performance of the optical machine module is realized. In addition, when the optical-mechanical module is tested, a larger test space and a projection screen are not needed, the performability is high, the production line replication is easy, and the intelligent detection of the large-scale optical-mechanical module is facilitated.
Drawings
Fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a testing method of an opto-mechanical module according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of a system architecture of the optical-mechanical module testing system according to the present invention;
FIG. 4 is a flowchart illustrating a second embodiment of a testing method of an opto-mechanical module according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal in the embodiment of the invention is optical module testing equipment, and the equipment can be a Personal Computer (PC), a smart phone, a tablet Computer, a portable Computer, a server and other terminal equipment.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU (Central Processing Unit), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wi-Fi interface, Wireless-Fidelity, Wi-Fi interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 1005 as a computer storage medium may include an operating system, a network communication module, and an optical mechanical module testing program.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client and performing data communication with the client; the processor 1001 may be configured to call the optical mechanical module test program stored in the memory 1005, and execute the following operations:
acquiring a first optical parameter of the optical-mechanical module when the optical-mechanical module is projected in the testing camera bellows through an optical performance sensing chip in the testing camera bellows;
obtaining a second optical parameter according to the first optical parameter and a preset mapping relation;
and testing the performance of the optical-mechanical module according to the second optical parameter to obtain a test result.
Further, the first optical parameter includes a first illumination and a first color coordinate, and the processor 1001 may call the optical mechanical module testing program stored in the memory 1005, and further perform the following operations:
obtaining a second illumination and a second color coordinate according to the first illumination, the first color coordinate and a preset mapping relation;
and acquiring a preset shading numerical value, and performing multiplication operation on the second illumination and the preset shading numerical value to obtain a third illumination, wherein the second optical parameter comprises the second color coordinate and the third illumination.
Further, the processor 1001 may call the optical mechanical module testing program stored in the memory 1005, and further perform the following operations:
judging whether the first illumination is smaller than a preset threshold value or not;
if the first illumination is larger than or equal to a preset threshold, generating corresponding prompt information to prompt that the test environment is unqualified or the optical machine module has a light leakage phenomenon;
if the first illumination is smaller than a preset threshold, executing the following steps: and obtaining a second optical parameter according to the first optical parameter and a preset mapping relation.
Further, the processor 1001 may call the optical mechanical module testing program stored in the memory 1005, and further perform the following operations:
calculating to obtain a third optical parameter according to the second optical parameter and a preset rule, wherein the third optical parameter comprises one or more of color temperature, uniformity and contrast;
and detecting whether the second optical parameter and the third optical parameter meet preset conditions or not so as to test the performance of the optical-mechanical module and obtain a test result.
Further, the processor 1001 may call the optical mechanical module testing program stored in the memory 1005, and further perform the following operations:
acquiring test data, wherein the test data comprises a camera obscura optical parameter measured by the optical performance perception chip and a normal optical parameter measured by projection under a normal condition;
and constructing and obtaining the preset mapping relation according to the optical parameters of the dark box and the normal optical parameters.
Further, the processor 1001 may call the optical mechanical module testing program stored in the memory 1005, and further perform the following operations:
acquiring a camera shooting image of a camera shooting device;
and comparing the image projected by the camera bellows with a preset standard image, and judging whether stains or dust exist in the optical machine module according to a comparison result.
Based on the hardware structure, the invention provides various embodiments of the test method of the optical-mechanical module.
The invention provides a testing method of an optical-mechanical module.
Referring to fig. 2, fig. 2 is a schematic flow chart of a testing method of an opto-mechanical module according to a first embodiment of the present invention.
In this embodiment, the optical module testing method is applied to an optical module testing system, the optical module testing system includes an optical module testing device and a testing camera bellows, and the optical module testing method includes:
step S10, the optical module testing equipment obtains a first optical parameter of the optical module when the optical module projects in the testing dark box through the optical performance sensing chip in the testing dark box;
in this embodiment, the optical module testing method is applied to an optical module testing system, as shown in fig. 3, the optical module testing system includes an optical module testing device and a testing camera box, wherein the testing camera box includes a projection screen, an optical performance sensing chip embedded in the projection screen, and a fixing tool disposed at a position opposite to the projection screen, wherein the fixing tool is used for fixing the optical module, and the fixing tool is optionally disposed at the opposite side of the projection screen, so as to project a picture to be projected on the projection screen. The optical performance perception chip is used for acquiring optical parameters including illumination and color coordinates in projection.
The terminal of the embodiment of the invention is optical module testing equipment, and the optical module testing equipment can be terminal equipment such as a Personal Computer (PC), a tablet Computer, a portable Computer, a server and the like. In the embodiment of the present invention, the optical module testing apparatus is taken as a PC terminal for illustration.
In the embodiment of the invention, after the optical engine module is fixed on the fixing tool of the testing camera bellows, the position of the optical engine module can be adjusted to ensure that the projected image is in a normal rectangle, then the opening side of the testing camera bellows is covered with the curtain cloth to ensure that the test of the optical engine module is carried out in a dark environment, and then the image to be projected is projected, wherein the image to be projected can comprise one or more of a white image, a black image, a red image, a green image and a blue image.
At this time, the optical module testing equipment obtains a first optical parameter of the optical module when the optical module is projected in the testing dark box through the optical performance sensing chip in the testing dark box, wherein the first optical parameter comprises illuminance and a color coordinate, and for convenience of distinguishing, the first optical parameter is respectively called as the first illuminance and the first color coordinate.
Step S20, obtaining a second optical parameter according to the first optical parameter and a preset mapping relation;
and then, obtaining a second optical parameter according to the first optical parameter and a preset mapping relation. The preset mapping relation is constructed in advance, and comprises a mapping relation between the illumination of the dark box and the normal illumination and a mapping relation between the color coordinates of the dark box and the color coordinates. The preset mapping relationship may be in the form of a table, for example, each of the dark box optical parameter intervals may be set to correspond to a normal optical parameter. Of course, the preset mapping relationship may also be in the form of a calculation formula, where different optical parameter intervals of the dark box correspond to the same calculation formula for calculating the normal optical parameters according to the optical parameters of the dark box, or different optical parameter intervals of the dark box correspond to different calculation formulas, without limiting the present invention. The process of constructing the predetermined mapping relationship may refer to the fourth embodiment described below.
The first optical parameter is obtained based on a dark box projection test scene (i.e., a scene in which the optical-mechanical module is fixed on a fixed tool for projection), and the second optical parameter is an optical parameter obtained by conversion in a normal projection scene (i.e., a scene in which the optical-mechanical module performs projection at a normal projection distance with a normal transmittance).
Wherein the first optical parameter includes a first luminance and a first color coordinate, and the step S20 includes:
a21, obtaining a second illumination and a second color coordinate according to the first illumination, the first color coordinate and a preset mapping relation;
step a22, obtaining a preset shading value, and performing multiplication operation on the second illuminance and the preset shading value to obtain a third illuminance, wherein the second optical parameter includes the second color coordinate and the third illuminance.
The first optical parameter includes a first luminance and a first color coordinate, and the second optical parameter (including a second color coordinate and a third luminance) is obtained as follows:
first, according to the first illumination, the first color coordinate and a preset mapping relation, a second illumination and a second color coordinate are obtained. Experiments prove that the color coordinate does not change due to the change of the test scene, namely, the second color coordinate is the same as the first color coordinate; the illumination value varies linearly with the variation of the projection distance, that is, the illumination value measured in the normal projection scene and the illumination value measured by the test dark box are in a linear relationship, specifically, Ev=Ev_iK + B, wherein Ev_iThe illumination value is measured at a position which is i meters away from the screen (namely when the optical engine module is fixed on a fixing tool which is i meters away from the projection screen in the test dark box for projection), namely the illumination value corresponds to first illumination; evThe illumination value is the illumination value under the projection distance (such as 1 meter) of the normal projection ratio of the optical machine, namely the corresponding second illumination.
Then, a preset shading value is obtained, and the second illuminance and the preset shading value are multiplied to obtain a third illuminance, that is, the third illuminance = the second illuminance and the preset shading value. Wherein the second optical parameter comprises a second color coordinate and a third luminance.
It should be noted that, because the testing dark box is small, when the optical module is projected, the light directly projected onto the optical performance sensing chip may be too strong, which results in exceeding the measurement range, so in practical implementation, a neutral gray mirror can be added in front of the lens of the optical module for fixing and weakening the illumination value, and meanwhile, the color coordinate is not affected. Therefore, the influence of the gray mirror is considered in calculating the illuminance value, and therefore a preset shading value is preset. The preset shading value corresponds to the shading capability of the gray mirror, for example, if the shading capability of the gray mirror is 80%, that is, only 20% of the light can be transmitted through the gray mirror to the optical performance sensor chip, the preset shading value can be set to 5.
And step S30, testing the performance of the optical-mechanical module according to the second optical parameter to obtain a test result.
After the second optical parameters (including the second color coordinate and the third illumination) are obtained, the performance of the optical mechanical module is tested according to the second optical parameters, and a test result is obtained.
Specifically, step S30 includes:
step a31, calculating to obtain a third optical parameter according to the second optical parameter and a preset rule, wherein the third optical parameter comprises one or more of color temperature, uniformity and contrast;
step a32, detecting whether the second optical parameter and the third optical parameter meet preset conditions or not, so as to test the performance of the optical-mechanical module, and obtain a test result.
And calculating to obtain a third optical parameter according to the second optical parameter and a preset rule, wherein the third optical parameter comprises one or more of color temperature, uniformity and contrast. The specific preset rule is a calculation rule of the third optical parameter, which may refer to the prior art, for example, for the contrast, i.e., a first difference between the maximum value of the x coordinate and the minimum value of the x coordinate and a second difference between the maximum value of the y coordinate and the minimum value of the y coordinate in the color coordinates.
And then, detecting whether the second optical parameter and the third optical parameter meet preset conditions or not so as to test the performance of the optical-mechanical module and obtain a test result. For example, the white balance performance of the optical mechanical module can be tested by detecting whether the value of the color coordinate is within a preset threshold range.
The embodiment of the invention provides an optical-mechanical module testing method, which is applied to an optical-mechanical module testing system, wherein the optical-mechanical module testing system comprises optical-mechanical module testing equipment and a testing camera bellows, and the optical-mechanical module testing equipment acquires a first optical parameter of an optical-mechanical module when the optical-mechanical module is projected in the testing camera bellows through an optical performance sensing chip in the testing camera bellows; obtaining a second optical parameter according to the first optical parameter and a preset mapping relation; and testing the performance of the optical-mechanical module according to the second optical parameter to obtain a test result. In the embodiment of the invention, the optical machine module is arranged in the testing camera bellows for projection by arranging the testing camera bellows, then the first optical parameter is obtained by the optical performance sensing chip in the testing camera bellows, the second optical parameter under the normal projection scene is obtained by processing and converting, and the performance test is further carried out based on the second optical parameter, so that the automatic test of the performance of the optical machine module is realized. In addition, when the optical-mechanical module is tested, a larger test space and a projection screen are not needed, the performability is high, the production line replication is easy, and the intelligent detection of the large-scale optical-mechanical module is facilitated.
Referring to fig. 4, fig. 4 is a flowchart illustrating a second embodiment of the testing method of the opto-mechanical module according to the present invention.
Based on the first embodiment shown in fig. 2, before the step S20, the method for testing an optical mechanical module further includes:
step S40, determining whether the first illuminance is less than a preset threshold;
in this embodiment, after the first optical parameter of the optical module during projection in the testing dark box is obtained through the optical performance sensing chip, whether the testing environment of the testing dark box is unqualified or the optical module has a light leakage phenomenon can be preliminarily detected based on the first illuminance in the first optical parameter. Specifically, it may be determined whether the first illuminance in the first optical parameter is smaller than a preset threshold.
If the first illumination is greater than or equal to the preset threshold, executing step S50 to generate corresponding prompt information to prompt that the test environment is unqualified or the optical engine module has a light leakage phenomenon;
if the first illumination is larger than or equal to the preset threshold, generating corresponding prompt information to prompt that the test environment is unqualified or the optical machine module has a light leakage phenomenon. The corresponding prompting modes may include, but are not limited to: 1) voice reminding; 2) performing character reminding in a terminal screen of the optical-mechanical module testing equipment; 3) and establishing communication connection with the management terminal, and sending the prompt information to the management terminal to inform management personnel.
If the first illuminance is less than the preset threshold, step S20 is executed: and obtaining a second optical parameter according to the first optical parameter and a preset mapping relation.
If the first illumination is smaller than the preset threshold, it indicates that there is no unqualified test environment or light leakage phenomenon in the optical engine module, at this time, the steps are continuously executed: obtaining a second optical parameter according to the first optical parameter and the preset mapping relationship, and then performing the subsequent steps, where the specific performing process may refer to the first embodiment, which is not described herein again.
In this embodiment, whether through judging first illuminance and be less than preset threshold value, can judge whether exist the circumstances that test environment is unqualified or ray apparatus module has the light leak phenomenon, get rid of after the unqualified circumstances of test environment as testing personnel, then can be used to detect the ray apparatus module and whether have the light leak phenomenon to whether the intellectual detection system of light leak phenomenon has been realized to the ray apparatus module.
Further, based on the first and second embodiments, a third embodiment of the testing method of the opto-mechanical module of the present invention is provided.
In this embodiment, before the step S10, the method for testing an optical mechanical module further includes:
step A, obtaining test data, wherein the test data comprises a camera obscura optical parameter measured by the optical performance sensing chip and a normal optical parameter measured by projection under a normal condition;
in this embodiment, in order to facilitate the subsequent conversion of the optical parameters obtained in the darkbox projection-based test scenario (i.e., the scenario in which the optical mechanical module is fixed to the fixed fixture for projection), the optical parameters in the normal projection scenario (i.e., the scenario in which the optical mechanical module performs projection at the normal transmittance at the normal projection distance) are obtained, and a mapping relationship between the darkbox optical parameters and the normal optical parameters needs to be established. Test data can be obtained through testing, and the test data comprises optical parameters of a dark box measured through the optical performance sensing chip and normal optical parameters measured through projection under normal conditions. The optical parameters of the black box comprise the illuminance and color coordinates (recorded as the illuminance and color coordinates of the black box respectively) measured in the projection test scene of the black box, and the normal optical parameters comprise the illuminance and color coordinates (recorded as the normal illuminance and color coordinates respectively) measured in the normal projection scene.
And B, constructing and obtaining the preset mapping relation according to the optical parameters of the dark box and the normal optical parameters.
And then, constructing to obtain a preset mapping relation according to the optical parameters of the dark box and the normal optical parameters. The preset mapping relation comprises a mapping relation between the illumination of the dark box and the normal illumination and a mapping relation between the color coordinate of the dark box and the color coordinate. When the preset mapping relationship is constructed, the corresponding mapping relationship can be determined by means of a least square method. The preset mapping relationship may be in a table form, for example, each of the optical parameter intervals of the dark box may be set to correspond to a normal optical parameter. Of course, the preset mapping relationship may also be in the form of a calculation formula, where different optical parameter intervals of the dark box correspond to the same calculation formula for calculating the normal optical parameters according to the optical parameters of the dark box, or different optical parameter intervals of the dark box correspond to different calculation formulas, without limiting the present invention.
By the method, the mapping relation between the optical parameters of the camera bellows and the corresponding normal optical parameters is established, so that the optical parameters acquired in the camera bellows projection test scene can be conveniently converted subsequently, the optical parameters in the normal projection scene are obtained, and further performance detection is carried out.
Further, based on the first and second embodiments, a fourth embodiment of the testing method of the opto-mechanical module of the present invention is provided.
In this embodiment, the testing method of the optical mechanical module further includes:
step C, acquiring a camera shooting image of a camera module;
in this embodiment, can shoot through the projection to ray apparatus module in the test camera bellows, obtain camera bellows projection image, and then whether have stain or dust on the subassembly or the camera lens based on this camera bellows projection image detection ray apparatus module.
Specifically, a camera device is used for acquiring a camera bellows projection image of the optical machine module, and the camera bellows projection image is an image of the optical machine template projected on a projection screen in the test camera bellows. The projection device can be a special camera device arranged in the optical machine module testing system, and can be arranged at the relative position of the projection screen, and the relative position can be optionally arranged right opposite to the projection screen so as to obtain a projection image (namely a camera bellows projection image) projected on the projection screen. Certainly, when the system is specifically implemented, the system can also be a projection device on the optical module testing equipment, and it can be understood that, in this case, the set position of the optical module testing equipment needs to be limited to obtain the dark box projection image.
And D, comparing the image projected by the camera bellows with a preset standard image, and judging whether stains or dust exist in the optical machine module according to a comparison result.
And then, comparing the image projected by the camera bellows with a preset standard image, and judging whether the optical machine module has stains or dust according to the comparison result. The preset standard projection image is a camera bellows projection image obtained by shooting when stains or dust do not exist on the component or the lens of the optical-mechanical module. When the image projected by the camera bellows is compared with the preset standard image, whether the two images have difference or not can be detected, and if the two images have difference, the optical machine module is judged to have stain or dust; if not, the optical machine module has no stain or dust.
By the mode, the embodiment of the invention can realize automatic detection on whether stains or dust exist on the components or the lens of the optical-mechanical module, manual checking and detection are not needed, the quality detection efficiency of the optical-mechanical module can be improved, and meanwhile, the condition that the stains or dust which are not obvious in the optical-mechanical module cannot be checked manually is avoided, so that the accuracy of the quality detection result of the optical-mechanical module can be improved to a certain extent.
The invention also provides an optical-mechanical module testing system, which comprises: the optical mechanical module testing equipment and the testing camera box are shown in figure 3.
The optical-mechanical module testing device is configured to execute the steps in the above-mentioned optical-mechanical module testing method embodiment, and specific functions and implementation processes may refer to the above-mentioned embodiment, which is not described herein again.
The testing camera bellows comprises a projection screen, an optical performance sensing chip embedded in the projection screen and a fixing tool arranged at a position opposite to the projection screen, wherein the fixing tool is used for fixing the optical-mechanical module;
the testing camera bellows is connected with the optical machine module testing equipment through the optical performance sensing chip and used for acquiring a first optical parameter through the optical performance sensing chip and sending the first optical parameter to the optical machine module testing equipment during testing.
In this embodiment, the test camera bellows includes projection screen, embedded optical performance perception chip on projection screen, and the fixed frock that sets up in the relative position with projection screen, and wherein, this fixed frock is used for fixed ray apparatus module, and fixed frock optional sets up in the face-to-face of projection screen to in with treat the projection picture projection on this projection screen. The optical performance perception chip is used for acquiring optical parameters including illumination and color coordinates in projection.
The testing camera bellows passes through the optical property perception chip and is connected with ray apparatus module test equipment for when testing, obtain first optical parameter through the optical property perception chip, and send first optical parameter to ray apparatus module test equipment.
During specific implementation, after the optical engine module is fixed on a fixing tool of the testing camera bellows, the position of the optical engine module can be adjusted to ensure that an image obtained by projection is in a normal rectangular shape, then the opening side of the testing camera bellows is covered with the upper curtain cloth to ensure that the testing of the optical engine module is carried out in a dark environment, and then a picture to be projected is projected, wherein the picture to be projected can comprise one or more of a white picture, a black picture, a red picture, a green picture and a blue picture. Then, the optical module testing equipment obtains a first optical parameter of the optical module when the optical module is projected in the testing camera bellows through the optical performance sensing chip in the testing camera bellows, and then carries out a series of processing on the first optical parameter to test the performance of the optical module.
In this embodiment, the optical module testing system is constructed, the optical module is placed in a testing camera bellows in the system for projection, the optical module testing equipment obtains a first optical parameter through an optical performance sensing chip in the testing camera bellows, processes and converts the first optical parameter to obtain a second optical parameter in a normal projection scene, and then performs performance testing based on the second optical parameter, so that automatic testing of the performance of the optical module is realized. In addition, when the optical-mechanical module is tested, a larger test space and a projection screen are not needed, the performability is high, the production line replication is easy, and the intelligent detection of the large-scale optical-mechanical module is facilitated.
Further, ray apparatus module test system still includes camera device, camera device with ray apparatus module test equipment communication connection, camera device is used for shooing the camera bellows projection image of ray apparatus module, and will camera bellows projection image send to ray apparatus module test equipment.
In this embodiment, this ray apparatus module test system can also include camera device, camera device and ray apparatus module test equipment communication connection, and camera device is used for shooing the camera bellows projection image of ray apparatus module to send the camera bellows projection image to ray apparatus module test equipment, whether for ray apparatus module test equipment detects ray apparatus module and has stain or dust. The image projected by the camera bellows is the image projected by the optical engine template on the projection screen in the test camera bellows.
The projection device can be a special camera device arranged in the optical machine module testing system, and can be arranged at the relative position of the projection screen, and the relative position can be optionally arranged right opposite to the projection screen so as to obtain a projection image (namely a camera bellows projection image) projected on the projection screen.
Of course, it can be understood that, in the specific embodiment, the dark box projection image may also be directly obtained by the projection device on the optical module testing apparatus, but in this case, the set position of the optical module testing apparatus needs to be limited to obtain the dark box projection image.
In this embodiment, through setting for a camera device for shoot the camera bellows projection image of ray apparatus module, whether have stain or dust on the subassembly or the camera lens of ray apparatus module based on this camera bellows projection image detection ray apparatus module test equipment for be convenient for.
The invention further provides a computer-readable storage medium, on which an optical-mechanical module testing program is stored, and when the optical-mechanical module testing program is executed by a processor, the steps of the optical-mechanical module testing method according to any one of the above embodiments are implemented.
The specific embodiment of the computer-readable storage medium of the present invention is substantially the same as the embodiments of the test method of the optical mechanical module, and is not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides an optical-mechanical module test method which characterized in that is applied to optical-mechanical module test system, optical-mechanical module test system includes optical-mechanical module test equipment and test camera bellows, optical-mechanical module test method includes the following steps:
the optical machine module testing equipment acquires a first optical parameter of the optical machine module when the optical machine module is projected in the testing camera bellows through an optical performance sensing chip in the testing camera bellows;
obtaining a second optical parameter according to the first optical parameter and a preset mapping relation;
and testing the performance of the optical-mechanical module according to the second optical parameter to obtain a test result.
2. The method of testing an optical-mechanical module of claim 1, wherein the first optical parameter comprises a first illumination and a first color coordinate, and the step of obtaining the second optical parameter according to the first optical parameter and a predetermined mapping relationship comprises:
obtaining a second illumination and a second color coordinate according to the first illumination, the first color coordinate and a preset mapping relation;
and acquiring a preset shading numerical value, and performing multiplication operation on the second illumination and the preset shading numerical value to obtain a third illumination, wherein the second optical parameter comprises the second color coordinate and the third illumination.
3. The method for testing an optical-mechanical module of claim 2, wherein before the step of obtaining the second optical parameter according to the first optical parameter and the predetermined mapping relationship, the method further comprises:
judging whether the first illumination is smaller than a preset threshold value or not;
if the first illumination is larger than or equal to a preset threshold, generating corresponding prompt information to prompt that the test environment is unqualified or the optical machine module has a light leakage phenomenon;
if the first illumination is smaller than a preset threshold, executing the following steps: and obtaining a second optical parameter according to the first optical parameter and a preset mapping relation.
4. The method according to any of the claims 1 to 3, wherein the step of testing the performance of the optical mechanical module according to the second optical parameter to obtain the test result comprises:
calculating to obtain a third optical parameter according to the second optical parameter and a preset rule, wherein the third optical parameter comprises one or more of color temperature, uniformity and contrast;
and detecting whether the second optical parameter and the third optical parameter meet preset conditions or not so as to test the performance of the optical-mechanical module and obtain a test result.
5. The opto-mechanical module testing method of any one of claims 1 to 3, further comprising:
acquiring test data, wherein the test data comprises a camera obscura optical parameter measured by the optical performance perception chip and a normal optical parameter measured by projection under a normal condition;
and constructing and obtaining the preset mapping relation according to the optical parameters of the dark box and the normal optical parameters.
6. The opto-mechanical module testing method of any one of claims 1 to 3, further comprising:
acquiring a camera shooting image of a camera shooting device;
and comparing the image projected by the camera bellows with a preset standard image, and judging whether stains or dust exist in the optical machine module according to a comparison result.
7. The utility model provides an optical module test equipment which characterized in that, optical module test equipment includes: a memory, a processor and an optical-mechanical module testing program stored on the memory and capable of running on the processor, wherein the optical-mechanical module testing program when executed by the processor implements the steps of the optical-mechanical module testing method according to any one of claims 1 to 6.
8. The utility model provides an optical machine module test system which characterized in that, optical machine module test system includes: the test system comprises optical-mechanical module test equipment and a test camera bellows; wherein the content of the first and second substances,
the opto-mechanical module testing apparatus is the opto-mechanical module testing apparatus of claim 7;
the testing camera bellows comprises a projection screen, an optical performance sensing chip embedded in the projection screen and a fixing tool arranged at a position opposite to the projection screen, wherein the fixing tool is used for fixing the optical-mechanical module;
the testing camera bellows is connected with the optical machine module testing equipment through the optical performance sensing chip and used for acquiring a first optical parameter through the optical performance sensing chip and sending the first optical parameter to the optical machine module testing equipment during testing.
9. The opto-mechanical module testing system of claim 8, further comprising a camera device communicatively coupled to the opto-mechanical module testing equipment, the camera device configured to capture a camera projection image of the opto-mechanical module and send the camera projection image to the opto-mechanical module testing equipment.
10. A computer-readable storage medium, wherein the computer-readable storage medium stores thereon a test program for an optical-mechanical module, and the test program, when executed by a processor, implements the steps of the test method for the optical-mechanical module according to any one of claims 1 to 6.
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