An air outlet hole detection method and monitoring system in a filter patching process

Abstract

The application discloses a kind of filter mounting process air hole detection method and its monitoring system, specifically to first the parameter of the light of detection light source machine lamp is set, select a substrate;Then the glue point is irradiated using the machine lamp light, let glue shape highlight on the substrate, and the start point and end point of the glue shape on the substrate are detected first spacing in X direction;Set the first spacing detection specification of the X direction;If the detection result of the first spacing of glue shape in the X direction is not in the specification range, the equipment will alarm prompt, prompt product unqualified;The present application increases relevant program and parameter setting to realize that glue is drawn immediately after size detection of air hole, and whether the detection result is in specification is judged;It is detected by filter glass mounting equipment instead of IPQC detection, greatly shortens detection reaction time, increases detection quantity, reduces scrap product due to test;It is fast, accurate and economical.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of camera module process, in particular to an air hole detection method in filter mounting process and a monitoring system thereof. BACKGROUND

[0002] With the continuous innovation of mobile phone camera technology, the camera has developed from single camera to multi-camera, low pixel to high pixel and high-multiple optical zoom periscope lens. As a result, the process difficulty of camera manufacturers has increased. In order to adapt to the development of the market, it is necessary to continuously develop production technology of high-end cameras. Among them, the glass mounting process is a key process, which needs to install an infrared cut filter in a dust-free environment, which can reduce the interference of infrared light on the image sensor, make the imaging closer to realize natural color, and bring the most real experience to the user.

[0003] In the camera module production process, there is a filter glass mounting project. Light passes through the lens, then the filter glass (upper surface of the filter glass) and the antireflection (lower surface of the filter glass) filter light, and finally reaches the sensor assembly. The filter glass mounting process is to glue the substrate with a glue dispensing head, and then mount the filter glass on the substrate with a mounting head. The process requirement of the glue dispensing part has an air hole, so that the glue shape is not closed before the filter glass is mounted on the substrate (the risk of closing before mounting: the filter glass is mounted on the substrate and the sensor assembly will have relative deviation and rotation, which will cause poor product imaging, thereby causing scrap) and the glue shape is closed after the filter glass is mounted. The purpose is to prevent movable dust in the internal space of the camera module from entering the surface of the sensor assembly, which will cause poor product imaging, thereby causing scrap. The current method for detecting the size of the air hole is to draw glue on the substrate, then send it to the quality inspection department for detection with a two-dimensional equipment after curing without mounting the filter glass, the frequency is 3 per day, and the products after testing need to be scrapped. The current problems are that the detection reaction time is too long, the sample quantity is too small, and it is not economical. SUMMARY

[0004] To solve the defects in the prior art, the present application provides an air hole detection method in filter mounting process.

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] The present application provides an air hole detection method in filter mounting process, comprising the following steps:

[0007] Step 1, first set the parameters of the machine lamp light in the detected light source, select a substrate;

[0008] Step 2, then use the machine lamp light to irradiate the glue point, let the glue shape highlight on the substrate, and detect the first interval of the X direction of the starting point and the ending point of the glue shape on the substrate;

[0009] Step 3, set the detection specification of the first interval of the X direction, and compare the starting point and the ending point of the glue shape with the detection specification range of the second interval of the X direction;

[0010] Step 4, if the detection result of the first interval of the X direction of the glue shape is not within the specification range, the device will alarm and prompt that the product is unqualified.

[0011] As a preferred technical solution of the present application, the substrate is white to highlight the glue shape.

[0012] As a preferred technical solution of the present application, the method for detecting the first interval of the X direction of the starting point and the ending point of the glue shape is to first set the X direction according to the direction setting of glue dispensing, then take a picture of the glue shape highlighted on the substrate through a vision camera, mark the starting point and the ending point of the glue shape according to the set X direction, and calculate the first interval of the X direction of the starting point and the ending point of the glue shape through the vision camera.

[0013] As a preferred technical solution of the present application, if the detection result is not within the specification range, the unqualified product is rejected.

[0014] As a preferred technical solution of the present application, if the detection result is within the specification range, the product is normally flowing.

[0015] As a preferred technical solution of the present application, a compensation value is set to compensate the first interval of the X direction of the starting point and the ending point of the glue shape.

[0016] As a preferred technical solution of the present application, the method for setting the detection specification range of the second interval of the X direction is obtained by analyzing the correlation between the detection data of the filter glass mounting device and the process control two-dimensional test data.

[0017] As a preferred technical solution of the present application, a gas hole monitoring system in a filter patch mounting process is used to implement any one of the above filter patch mounting process gas hole detection methods, which comprises a device with a machine lamp light source for emitting detection light, a substrate for highlighting the glue shape of glue dispensing, and a vision camera for detecting the first interval of the X direction of the starting point and the ending point of the glue shape.

[0018] As a preferred technical scheme of the present application, a conveying mechanism for conveying the product is arranged, and the conveying mechanism is used for conveying the product to below the light source of the machine lamp light.

[0019] As a preferred technical scheme of the present application, an alarm is further arranged on the device, and the alarm is used for sounding an alarm when the detection result is not within the specification range.

[0020] The present application has the following beneficial effects:

[0021] 1. The method provided by the present application is characterized in that: first, the parameters of the machine lamp light in the light source are set, and a substrate is selected; then, the machine lamp light is used to irradiate the glue point, so that the glue shape is highlighted on the substrate, and the first interval in the X direction of the starting point and the ending point of the glue shape on the substrate is detected; the detection specification of the first interval in the X direction is set; and the detected starting point and ending point of the glue shape are compared with the detection specification range of the first interval in the X direction and the second interval in the X direction; if the detection result of the first interval in the X direction of the glue shape is not within the specification range, the device will alarm and prompt that the product is unqualified; the present application adds relevant programs and parameter settings to realize the detection of the size of the air outlet hole immediately after the glue is drawn, and judges whether the detection result is within the specification; the detection of the filter glass mounting device is used to replace the IPQC detection, which greatly shortens the detection reaction time, increases the detection quantity, and reduces the scrapped products due to testing; it is fast, accurate and economical. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present application are described below, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0023] Embodiment: The present application is a filter mounting process air hole detection method, comprising the following steps:

[0024] Step 1: first, the parameters of the machine lamp light in the light source are set, and a substrate is selected; the substrate is white to highlight the glue shape;

[0025] Step 2: then, the machine lamp light is used to irradiate the glue point, so that the glue shape is highlighted on the substrate, and the first interval in the X direction of the starting point and the ending point of the glue shape on the substrate is detected;

[0026] Step 3: the detection specification of the first interval in the X direction is set; and the detected starting point and ending point of the glue shape are compared with the detection specification range of the first interval in the X direction and the second interval in the X direction;

[0027] Step 4, if the detection result of the first interval of the glue shape in the X direction is not within the specification range, the device will alarm and prompt that the product is unqualified.

[0028] The method for detecting the first interval of the glue shape in the X direction from the starting point to the ending point is to first set the X direction according to the glue dispensing direction setting, then take a photo of the glue shape highlighted on the substrate through a vision camera, mark the starting point and the ending point of the glue shape according to the set X direction, and calculate the first interval of the X direction of the starting point and the ending point of the glue shape through the vision camera.

[0029] If the detection result is not within the specification range, the unqualified product is rejected.

[0030] If the detection result is within the specification range, the product flows normally.

[0031] A compensation value is set to compensate the first interval of the X direction of the starting point and the ending point of the glue shape.

[0032] The method for setting the detection specification range of the second interval of the X direction is obtained by analyzing the correlation between the detection data of the filter glass mounting device and the process control two-dimensional test data.

[0033] A gas hole monitoring system in a filter patch mounting process is used to implement the above-mentioned any one of the filter patch mounting process gas hole detection method, which includes the machine lamp light source for emitting detection light, the substrate for highlighting the glue shape after glue dispensing, and the vision camera for detecting the first interval of the X direction of the starting point and the ending point of the glue shape.

[0034] The device further includes a conveying mechanism for conveying the product, and the conveying mechanism is used to convey the product below the light source of the machine lamp light.

[0035] The device further includes an alarm, which emits an alarm sound when the detection result is not within the specification range.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for detecting air vents in adhesive dots during filter mounting, characterized in that, Includes the following steps: Step 1: First, set the parameters of the machine lights used for testing and select a substrate; Step 2: Then, the machine light is used to illuminate the glue dots, making the glue shape stand out on the substrate. The first distance between the start and end points of the glue shape on the substrate in the X direction is detected. Specifically, the X direction is first set according to the glue dispensing direction. Then, the glue shape standing out on the substrate is photographed by a vision camera. The start and end points of the glue shape are marked according to the set X direction. The first distance between the start and end points of the glue shape in the X direction is calculated from the image captured by the vision camera. Step 3: Set the detection specification range of the second spacing in the X direction; and compare the detected first spacing of the adhesive in the X direction with the set detection specification range of the second spacing in the X direction. The detection specification range of the second spacing in the X direction is obtained by correlation analysis between the filter mounting equipment detection data and the process control two-dimensional test data. Step 4: If the detection result of the first spacing in the X direction of the adhesive is not within the detection specification range of the second spacing in the X direction, the equipment will issue an alarm, indicating that the product is unqualified; the substrate is white to make the adhesive stand out.

2. The method for detecting air vents in adhesive dots during filter mounting process according to claim 1, characterized in that, The product is transported to the area below the light source of the machine's lighting using a conveyor mechanism.

3. The method for detecting air vents in adhesive dots during filter mounting process according to claim 2, characterized in that, If the test result is not within the test specification range of the second spacing in the X direction, the unqualified product will be rejected.

4. The method for detecting air vents in adhesive dots during filter mounting process according to claim 2, characterized in that, If the test results are within the test specification range of the second spacing in the X direction, the product is transported normally.

5. The method for detecting air vents in adhesive dots during filter mounting process according to claim 1, characterized in that, Set a compensation value, and use the compensation value to compensate for the first distance in the X direction between the start and end points of the gel shape.