A lens flare rapid detection device

Abstract

This invention relates to the field of optical inspection equipment technology, and particularly to a rapid lens flare detection device, comprising: a driving mechanism, a planar LED inspection mechanism, and a multi-field-of-view screening mechanism; the planar LED inspection mechanism and the multi-field-of-view screening mechanism respectively perform rapid inspection and screening of lens flare, using real imaging conditions to assist in evaluating the degree of lens flare. The driving mechanism includes: a linear module, a sliding module, an L-shaped support plate, and a tray; the linear module is symmetrically fixed on a horizontal working platform, and the sliding module is installed at the driving end of the linear module, driving the sliding module to slide and adjust on the X-axis; several L-shaped support plates are installed at the driving end of the sliding module, driving the L-shaped support plates to slide and adjust on the Y-axis. This invention enables multi-station planar rapid inspection, combined with multi-field-of-view point light source screening of lens flare degree, improving inspection efficiency and reducing the risk of missed detection.

Description

Technical Field

[0001] This invention relates to the field of optical inspection equipment technology, and in particular to a rapid lens flare inspection device. Background Technology

[0002] In recent years, the rapid development of mobile phones, automotive components, and other fields has met people's demands for improved product functionality and quality. Among these, the lens, an optical component, plays a crucial role.

[0003] The quality of lens imaging directly affects the user experience. Therefore, the requirements for flare detection, which affects lens imaging, are very high. However, lens components have complex structures, high cleanliness requirements, and many processing steps, so even slight carelessness can lead to a wide variety of flare types.

[0004] In related technologies, the flare of the lens assembly itself is generally detected by visual inspection equipment to check a few specific appearances and by manual microscopy. This process is labor-intensive, time-consuming, and prone to missed detections. Especially during the trial production of new structures or when local processes are changed, new flare features that are difficult to detect are more likely to emerge, posing a significant potential risk. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention discloses a rapid lens flare detection device. This invention can quickly detect flare using a planar LED light source and screen using multiple field-of-view point light sources. It uses real imaging conditions to assist in evaluating the degree of lens flare, thereby improving detection efficiency and reducing the risk of missed detections.

[0006] This invention is achieved through the following technical solution:

[0007] A rapid lens flare detection device includes: a driving mechanism, a planar LED detection mechanism, and a multi-field screening mechanism; the planar LED detection mechanism and the multi-field screening mechanism are used to quickly detect and screen lens flare respectively, and the actual imaging situation is used to assist in judging the degree of lens flare.

[0008] Preferably, the driving mechanism includes: a linear module, a sliding module, an L-shaped support plate, and a tray; the linear module is symmetrically fixed on a horizontal working platform; the sliding module is installed at the driving end of the linear module, driving the sliding module to slide and adjust along the X-axis; a plurality of L-shaped support plates are installed at the driving end of the sliding module, driving the L-shaped support plates to slide and adjust along the Y-axis; the L-shaped support plate has a placement area for the tray, used to place and fix the tray; the tray has evenly spaced holes for placing and fixing lenses.

[0009] Preferably, it also includes reinforcing ribs, which are disposed on the L-shaped support plate.

[0010] Preferably, the number of L-shaped trays provided is two or more.

[0011] Preferably, the planar LED detection mechanism includes: a circumferential fixing device, a sliding optical axis, a locking device, an LED light panel, an XYZ manual adjustment platform, and an image sensor. The four circumferential fixing devices vertically fix the sliding optical axis on a horizontal working platform. The locking device is provided on the sliding optical axis to lock and restrict the LED light panel at a certain height on the sliding optical axis. The two XYZ manual adjustment platforms are arranged and fixed on the horizontal working platform in a Y-axis orientation, and the image sensor is attached to the top of the XYZ manual adjustment platform, with the image sensor located directly below the LED light panel.

[0012] Preferably, the multi-field screening mechanism includes: a vertical support, an umbrella-shaped frame, arc-shaped tracks, a point light source, a second xyz manual adjustment platform, and a second image sensor; the umbrella-shaped frame is fixed to a horizontal working platform by the vertical support, and the umbrella-shaped frame also includes multiple arc-shaped tracks arranged circumferentially, the point light source slides freely and locks along the arc-shaped tracks, one second xyz manual adjustment platform is fixed to the horizontal working platform, and the second image sensor is attached to the top of the second xyz manual adjustment platform, the second image sensor being located directly below the axial direction of the umbrella-shaped frame.

[0013] Preferably, the overall exterior of the detection device also includes an aluminum alloy shell, with a black light-absorbing film affixed to the locations where ambient light needs to be blocked.

[0014] Preferably, the surface of the drive mechanism needs to be blackened.

[0015] Preferably, a reasonable distance is set between the LED light panel and the umbrella-shaped frame to ensure that they do not interfere with each other when they are working.

[0016] The present invention has the following beneficial effects:

[0017] 1. Common types of flare can be quickly detected using a planar LED light source.

[0018] 2. In the fast inspection mode, it can be equipped with dual or even multi-stations. Simply select a long sliding module. It is simple and easy to implement, and greatly improves the inspection efficiency.

[0019] 3. The point light source can be moved radially and placed in different fields of view to screen for special types of flares.

[0020] 4. The results of lens determination at each aperture position on the tray can be directly transmitted to the MTF machine for quick evaluation of the resolution of qualified lenses.

[0021] 5. Combining planar LED light source rapid detection and multi-field point light source screening improves detection efficiency and reduces false negative rate. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the tray of the present invention.

[0025] Figure 3 This is a schematic diagram of the LED light panel of the present invention.

[0026] In the diagram: 101-Linear module, 102-Sliding module, 103-L-shaped support plate, 104-Tray disk, 105-Reinforcing rib; 201-Circumferential fixing device, 202-Sliding optical axis, 203-Locking device, 204-LED light panel, 205-XYZ manual adjustment platform one, 206-Image sensor one; 301-Vertical support, 302-Umbrella-shaped structure frame, 303-Arc-shaped track, 304-Point light source, 305-XYZ manual adjustment platform two, 306-Image sensor two. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figure 1-3This invention provides a technical solution for a rapid lens flare detection device, comprising: a driving mechanism, a planar LED detection mechanism, and a multi-field screening mechanism. The planar LED detection mechanism and the multi-field screening mechanism perform rapid detection and screening of lens flare respectively, using real-world imaging conditions to assist in evaluating the degree of lens flare. The driving mechanism aligns the lens in the 104 holes of the tray with the image sensor; in rapid detection mode, it can be used with dual or even multiple stations for simultaneous detection. The planar LED detection mechanism is responsible for rapid detection of common types of flare using a planar LED light source. The multi-field screening mechanism uses a multi-field point light source (304) to screen for special types of flare. The entire device utilizes real-world imaging conditions to assist in evaluating the degree of lens flare, improving detection efficiency and reducing the risk of missed detections.

[0029] The driving mechanism includes: a linear module 101, a sliding module 102, an L-shaped support plate 103, and a tray 104; the linear module 101 is symmetrically fixed on a horizontal working platform; the sliding module 102 is installed at the driving end of the linear module 101, and the sliding module 102 is driven to slide and adjust on the X-axis; several L-shaped support plates 103 are installed at the driving end of the sliding module 102, and the L-shaped support plates 103 are driven to slide and adjust on the Y-axis; the L-shaped support plate 103 has a placement area for the tray 104, which is used to place and fix the tray 104; the tray 104 has evenly spaced holes for placing and fixing lenses.

[0030] It also includes a reinforcing rib 105, which is provided on the L-shaped support plate 103.

[0031] The number of L-shaped trays 103 is two or more.

[0032] The planar LED detection mechanism includes: a circumferential fixing device 201, a sliding optical axis 202, a locking device 203, an LED light panel 204, an XYZ manual adjustment platform 205, and an image sensor 206. The four circumferential fixing devices 201 vertically fix the sliding optical axis 202 on the horizontal working platform. The locking device 203 is provided on the sliding optical axis 202 to lock and restrict the LED light panel 204 at a certain height of the sliding optical axis 202. The two XYZ manual adjustment platforms 205 are arranged and fixed on the horizontal working platform in a Y-axis manner, and the image sensor 206 is attached to the top of the XYZ manual adjustment platform 205. The image sensor 206 is located directly below the LED light panel 204.

[0033] The multi-field screening mechanism includes: a vertical support 301, an umbrella-shaped frame 302, an arc-shaped track 303, a point light source 304, a second xyz manual adjustment platform 305, and a second image sensor 306. The umbrella-shaped frame 302 is fixed to the horizontal working platform by the vertical support 301. The umbrella-shaped frame 302 also includes multiple circumferentially arranged arc-shaped tracks 303. The point light source 304 slides freely and locks along the arc-shaped tracks 303. A second xyz manual adjustment platform 305 is fixed to the horizontal working platform, and the second image sensor 306 is attached to the top of the second xyz manual adjustment platform 305. The second image sensor 306 is located directly below the axial direction of the umbrella-shaped frame 302.

[0034] The overall exterior of the detection device also includes an aluminum alloy shell, with black light-absorbing films affixed to the locations where ambient light needs to be blocked.

[0035] The surface of the drive mechanism needs to be blackened.

[0036] A reasonable distance is set between the LED light panel 204 and the umbrella-shaped frame 302 to ensure that they do not interfere with each other when they are working.

[0037] The embodiments of the present invention also include the following working method:

[0038] Preparation: Before testing lenses of the same model, such as... Figure 1 As shown, the poses of the three image sensors are adjusted using the XYZ manual adjustment platform. These three image sensors are two image sensors 206 and one image sensor 306. The locking device 203 is opened, and the height of the LED light panel 204 is adjusted along the sliding optical axis 202, then locked. Based on the distance between the two XYZ manual adjustment platforms 205, the image is observed, and the spacing between the two L-shaped support plates 103 is adjusted. The point light source 304 is locked in position as required, distributed in different fields of view.

[0039] Formal Operation: The sliding module 102 moves to its initial position, which is the leftmost end of the linear module 101, and will move as follows: Figure 2 The tray 104 is placed in the L-shaped tray 103. After confirming that everything is correct, the sliding module 102 moves to directly above the image sensor 206, aligns with the first lens in the tray 104, takes the first image, transmits it to the algorithm for processing and evaluation, records the defect results of the first lens, and while transmitting the image data, the sliding module 102 moves to above the next lens to start taking the second image. The above steps are repeated until all lenses in the tray 104 have been photographed.

[0040] Based on the processing results of the planar LED quick detection, the positions of unqualified lenses are shielded, the sliding module 102 moves to the underside of the umbrella-shaped structure frame 302, aligns with the position of the first qualified quick detection result, captures an image, transmits it to the algorithm for processing and evaluation, records the flare result, and so on, to complete the multi-field detection task.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Based on the modular scheme of driving structure, planar fast detection and multi-field screening, the device structure of the present invention can be transformed in various ways, such as the type and structural form of the driving mechanism, the number of workstations, the shape of the workstation tray, the structure of the umbrella-shaped frame and its support form, etc., and these equivalent transformations all fall within the protection scope of the present invention.

Claims

1. A method for rapid lens flare detection, applied to a rapid lens flare detection device, characterized in that, The detection device includes: a driving mechanism, a planar LED detection mechanism, and a multi-field screening mechanism; the planar LED detection mechanism and the multi-field screening mechanism are used to quickly detect and screen lens flare, respectively, and the actual imaging situation is used to assist in judging the degree of lens flare; The driving mechanism includes: a linear module (101), a sliding module (102), an L-shaped support plate (103), and a tray (104); the linear module (101) is fixed symmetrically along the Y-axis on a horizontal working platform, and the sliding module (102) is installed at the driving end of the linear module (101), driving the sliding module (102) to slide and adjust on the X-axis; two L-shaped support plates (103) are installed at the driving end of the sliding module (102), driving the L-shaped support plates (103) to slide and adjust on the Y-axis; the L-shaped support plate (103) is provided with a placement area for the tray (104) for placing and fixing the tray (104), and the tray (104) is provided with evenly spaced holes for placing and fixing lenses; The planar LED detection mechanism includes: a circumferential fixing device (201), a sliding optical axis (202), a locking device (203), an LED light panel (204), an XYZ manual adjustment platform (205), and an image sensor (206); the four circumferential fixing devices (201) vertically fix the sliding optical axis (202) on a horizontal working platform, the locking device (203) is provided on the sliding optical axis (202) to lock and restrict the LED light panel (204) at a certain height of the sliding optical axis (202), the two XYZ manual adjustment platforms (205) are arranged and fixed on the horizontal working platform in a Y-axis manner, and the image sensor (206) is attached to the top of the XYZ manual adjustment platform (205), the image sensor (206) is located directly below the LED light panel (204); The multi-field screening mechanism includes: a vertical support (301), an umbrella-shaped frame (302), an arc-shaped track (303), a point light source (304), a second xyz manual adjustment platform (305), and a second image sensor (306); the umbrella-shaped frame (302) is fixed to a horizontal working platform by the vertical support (301), and the umbrella-shaped frame (302) also includes a plurality of arc-shaped tracks (303) arranged circumferentially. The point light source (304) slides freely and locks along the arc-shaped track (303). One second xyz manual adjustment platform (305) is fixed to the horizontal working platform, and the second image sensor (306) is attached to the top of the second xyz manual adjustment platform (305). The second image sensor (306) is located directly below the axial direction of the umbrella-shaped frame (302). The overall exterior of the detection device also includes an aluminum alloy shell, with a black light-absorbing film attached to the locations where ambient light needs to be blocked. The surface of the drive mechanism needs to be blackened. The drive mechanism enables the lens in the tray (104) hole to align with the image sensor, and in the fast detection mode, it is used in conjunction with dual stations for simultaneous detection; the planar LED detection mechanism is responsible for the fast detection of common types of flares by the planar LED light source; the multi-field screening mechanism enables the screening of special types of flares by the multi-field point light source (304); The method includes: Before testing the same type of lens, the poses of the two image sensors (206) are adjusted using two xyz manual adjustment platforms (205), and the poses of one image sensor (306) are adjusted using one xyz manual adjustment platform (305). The locking device (203) is opened, and the height of the LED light board (204) is adjusted along the sliding optical axis (202) and locked. The image is observed according to the distance between the two xyz manual adjustment platforms (205), and the spacing between the two L-shaped support plates (103) is adjusted. The point light source (304) is locked in position as required and distributed in different fields of view. The sliding module (102) moves to the leftmost end of the straight module (101), places the tray (104) in the L-shaped tray (103), and after confirming that there is no error, the sliding module (102) moves to the top of the image sensor (206), aligns with the first lens in the tray (104), takes the first image, transmits it to the algorithm for processing and evaluation, records the defect result of the first lens, and while transmitting the image data, the sliding module (102) moves to align with the next lens and starts to take the second image. The above steps are repeated until all the lenses in the tray (104) have been photographed. Based on the processing results of the planar LED detection mechanism's rapid inspection, the positions of unqualified lenses are shielded, the sliding module (102) moves to the underside of the umbrella-shaped structure frame (302), aligns with the position of the first qualified rapid inspection result, captures an image, transmits it to the algorithm for processing and evaluation, records the flare result, and so on, to complete the multi-field detection task.

2. The method for rapid lens flare detection as described in claim 1, characterized in that, It also includes reinforcing ribs (105), which are disposed on the L-shaped support plate (103).

3. The method for rapid lens flare detection as described in claim 1, characterized in that, A reasonable distance is set between the LED light panel (204) and the umbrella-shaped frame (302) to ensure that they do not interfere with each other when they are working.

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