Air outlet hole detection method in optical filter mounting process and monitoring system thereof

Abstract

The invention discloses an air outlet hole detection method in an optical filter mounting process and a monitoring system thereof, and the method specifically comprises the steps: firstly, setting parameters of machine light in a detected light source, and selecting a substrate; then the machine table light is used for irradiating glue points, the glue shape is made to be highlighted on the substrate, and first distance detection in the X direction is carried out on the starting point and the ending point of the glue shape on the substrate; setting a detection specification of the first spacing in the X direction; if the detection result of the first distance in the X direction of the glue shape is not within the specification range, the equipment gives an alarm prompt to prompt that the product is unqualified; according to the invention, related programs and parameter setting are added to realize the immediate detection of the size of the vent hole after glue drawing, and whether the detection result is within the specification is judged; iPQC detection is replaced by filter glass mounting equipment detection, so that the detection reaction time is greatly shortened, the detection quantity is increased, and scrapped products caused by testing are reduced; the method is fast, accurate and economical.

Description

Technical Field

[0001] The present invention relates to the technical field of camera module technology, and in particular to a method for detecting air holes in a filter mounting process and a monitoring system thereof. Background Art

[0002] With the continuous innovation of mobile phone camera technology, cameras have also developed from single-camera to multi-camera, from low-pixel to high-pixel and high-multiple optical zoom periscope lenses. 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 high-end camera production technology. Among them, the glass mounting process is a key process. It is necessary to install an infrared cutoff filter in a dust-free environment to reduce the interference of infrared light on the image sensor, making the imaging closer to achieve natural color, giving users the most realistic experience.

[0003] There is a filter glass mounting project in the camera module production process. Light enters through the lens, and then the filter performs filtering (upper surface of the filter glass) and anti-reflection (lower surface of the filter glass), and finally reaches the sensor component; the filter glass mounting process is that the dispensing head dispenses glue on the substrate, and then the mounting head sticks the filter glass on the substrate; the dispensing part of the process requires that there should be air holes, 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 will be relatively offset and rotated when it is attached to the substrate and the sensor component, which will cause poor product imaging and thus scrap) and the glue shape is closed after the filter glass is attached; the purpose is to prevent the movable dust in the internal space of the camera module from entering the surface of the sensor component, which will cause poor product imaging and thus scrap. The current method for detecting the size of the air holes is: after drawing glue on the substrate, do not mount the filter glass for curing, and then send it to the quality inspection department for testing with secondary equipment, with a frequency of 3 pieces per day, and the products after the test need to be scrapped; the current problems are that the detection reaction time is too long, the number of samples is too small, and it is not economical. Summary of the invention

[0004] In order to solve the defects in the prior art, the present invention provides a method for detecting air holes in a filter mounting process.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides a method for detecting air holes in a filter mounting process, comprising the following steps:

[0007] Step 1: First, set the parameters of the machine light in the light source to be tested and select a substrate;

[0008] Step 2, then use the machine light to illuminate the glue point, so that the glue shape is prominent on the substrate, and perform a first spacing detection in the X direction on the starting point and the end point of the glue shape on the substrate;

[0009] Step 3, setting the detection specification of the first spacing in the X direction; and comparing the first spacing in the X direction and the detection specification range of the second spacing in the X direction of the detected starting point and end point of the glue shape;

[0010] Step 4: If the detection result of the first spacing in the X direction of the adhesive is not within the specification range, the device will alarm to indicate that the product is unqualified.

[0011] As a preferred technical solution of the present invention, the substrate is white to achieve highlighting of the glue shape.

[0012] As a preferred technical solution of the present invention, a method for detecting the first spacing in the X direction between the starting point and the end point of the glue shape is to first set the X direction according to the dispensing direction setting, then use a visual camera to shoot the glue shape highlighted on the substrate, and mark the starting point and the end point of the glue shape according to the set X direction, and calculate the first spacing in the X direction between the starting point and the end point of the glue shape by the visual camera.

[0013] As a preferred technical solution of the present invention, if the test result is not within the specification range, the unqualified product is discarded.

[0014] As a preferred technical solution of the present invention, if the test result is within the specification range, the product flows normally.

[0015] As a preferred technical solution of the present invention, a compensation value is set, and the first spacing in the X direction is compensated for the starting point and the end point of the glue shape by using the compensation value.

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

[0017] As a preferred technical solution of the present invention, a system for monitoring air vents in a filter mounting process is provided, which is used to implement any of the above-mentioned methods for detecting air vents in a filter mounting process, and includes the machine light for emitting a detection light source, the substrate for highlighting the glue shape during glue dispensing, and the visual camera for detecting the first spacing in the X direction between the starting point and the end point of the glue shape.

[0018] As a preferred technical solution of the present invention, it includes a conveying mechanism for conveying the product, and the conveying mechanism is used to convey the product to below the light source of the machine light.

[0019] As a preferred technical solution of the present invention, the device is also provided with an alarm, which sounds an alarm when the detection result is not within the specification range.

[0020] The beneficial effects of the present invention are:

[0021] 1. The method provided by the present invention is to first set the parameters of the machine light in the light source for detection, select a substrate; then use the machine light to irradiate the glue point, so that the glue shape is prominent on the substrate, and perform a first spacing detection in the X direction on the starting point and the end point of the glue shape on the substrate; set the detection specification of the first spacing in the X direction; and compare the first spacing in the X direction between the detected starting point and the end point of the glue shape and the detection specification range of the second spacing in the X direction; if the detection result of the first spacing in the X direction of the glue shape is not within the specification range, the equipment will alarm and prompt that the product is unqualified; the present invention adds relevant programs and parameter settings to realize the immediate detection of the size of the vent hole after the glue is painted, and determines whether the detection result is within the specification; the detection of the filter glass mounting equipment replaces the IPQC detection, which greatly shortens the detection reaction time, increases the number of detections, and reduces the scrapped products due to the test; it is fast, accurate and economical. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0024] Embodiment: A method for detecting air holes in a filter mounting process of the present invention comprises the following steps:

[0025] Step 1: First, set the parameters of the machine light in the light source to be detected, and select a substrate; the substrate is white to achieve the highlighting of the glue shape;

[0026] Step 2, then use the machine light to illuminate the glue point, so that the glue shape is prominent on the substrate, and perform a first spacing detection in the X direction on the starting point and the end point of the glue shape on the substrate;

[0027] Step 3, setting the detection specification of the first spacing in the X direction; and comparing the first spacing in the X direction and the detection specification range of the second spacing in the X direction of the detected starting point and end point of the glue shape;

[0028] Step 4: If the detection result of the first spacing in the X direction of the adhesive is not within the specification range, the device will alarm to indicate that the product is unqualified.

[0029] The method for detecting the first spacing in the X direction between the starting point and the end point of the glue shape is to first set the X direction according to the dispensing direction setting, then use a visual camera to shoot the glue shape protruding on the substrate, and mark the starting point and the end point of the glue shape according to the set X direction, and calculate the first spacing in the X direction between the starting point and the end point of the glue shape by the visual camera.

[0030] If the test results are not within the specification range, the unqualified products will be discarded.

[0031] If the test result is within the specification range, the product flows normally.

[0032] Wherein, a compensation value is set, and the first spacing in the X direction is compensated for the starting point and the end point of the glue shape by using the compensation value.

[0033] The method for setting the detection specification range of the second spacing in the X direction is to obtain the range through correlation analysis between the detection data of the filter glass mounting equipment and the process control two-dimensional test data.

[0034] Among them, a vent monitoring system in a filter mounting process is used to implement any of the above-mentioned vent detection methods in a filter mounting process, including the machine light that emits a detection light source, the substrate that highlights the glue shape during glue dispensing, and the visual camera device that detects the first spacing in the X direction between the starting point and the end point of the glue shape.

[0035] Among them, it includes a conveying mechanism for conveying the product, and the conveying mechanism is used to convey the product to under the light source of the machine light.

[0036] The device is also provided with an alarm, which sounds an alarm when the test result is not within the specification range.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for detecting air holes in a filter mounting process, characterized in that: The following steps are involved: Step 1: First, set the parameters of the machine light in the light source to be tested and select a substrate; Step 2, then use the machine light to illuminate the glue point, so that the glue shape is prominent on the substrate, and perform a first spacing detection in the X direction on the starting point and the end point of the glue shape on the substrate; Step 3, setting the detection specification of the first spacing in the X direction; and comparing the first spacing in the X direction and the detection specification range of the second spacing in the X direction of the detected starting point and end point of the glue shape; Step 4: If the detection result of the first spacing in the X direction of the adhesive is not within the specification range, the device will alarm to indicate that the product is unqualified.

2. The method for detecting air holes in a filter mounting process according to claim 1, characterized in that: The substrate is white to make the shape of the glue stand out.

3. The method for detecting air holes in a filter mounting process according to claim 1, characterized in that: The method for detecting the first spacing in the X direction between the starting point and the end point of the glue shape is to first set the X direction according to the dispensing direction setting, then use a visual camera to shoot the glue shape protruding on the substrate, and mark the starting point and the end point of the glue shape according to the set X direction, and calculate the first spacing in the X direction between the starting point and the end point of the glue shape by the visual camera.

4. The method for detecting air holes in a filter mounting process according to claim 1, characterized in that: If the test results are not within the specification range, the unqualified products will be discarded.

5. The method for detecting air holes in a filter mounting process according to claim 1, characterized in that: If the test results are within the specification range, the product flows normally.

6. The method for detecting air holes in a filter mounting process according to claim 1, characterized in that: A compensation value is set, and the first spacing in the X direction is compensated for the starting point and the end point of the glue shape by using the compensation value.

7. The method for detecting air holes in a filter mounting process according to claim 1, characterized in that: The method for setting the detection specification range of the second spacing in the X direction is to obtain the range through correlation analysis between the detection data of the filter glass mounting equipment and the process control secondary element test data.

8. A vent monitoring system in a filter mounting process, used to implement any one of the vent detection methods in the filter mounting process 1-7 above, characterized in that: The device includes the machine light having a light source for emitting a detection light source, the substrate for highlighting the glue shape during dispensing, and the visual camera for detecting the first spacing in the X direction between the starting point and the end point of the glue shape.

9. The vent monitoring system in the filter mounting process according to claim 8, characterized in that: It comprises a conveying mechanism for conveying the product, and the conveying mechanism is used to convey the product to below the light source of the machine light.

10. The vent monitoring system in the filter mounting process according to claim 8, characterized in that: The device is also provided with an alarm, which sounds an alarm when the test result is not within the specification range.