Modular camera coaxial light source structure

Abstract

The utility model provides a kind of module camera coaxial light source structure, it is related to module camera coaxial light source structure technical field, including camera module, coaxial light component, camera module is fixedly connected in the side of coaxial light component and towards coaxial light component, coaxial light component includes mounting bracket, coaxial light lamp plate, coaxial filter plate, half transparent half mirror, optical glass, optical glass is fixedly connected in one end of mounting bracket and close to camera module, half transparent half mirror is inclined and fixedly connected in mounting bracket, coaxial light lamp plate is fixedly connected in the inner wall of mounting bracket and towards half transparent half mirror, coaxial filter plate covers coaxial light lamp plate and is fixedly connected with mounting bracket;The module camera coaxial light source structure can effectively solve the problem that light source structure's astigmatism influences camera to obtain clear image, and then be conducive to accurate visual inspection of product subsequent.

Description

Technical Field

[0001] This utility model relates to the technical field of coaxial light source structure for modular cameras, and in particular to a coaxial light source structure for modular cameras. Background Technology

[0002] Visual inspection equipment is a type of device that utilizes optical and computer vision technologies for inspection, analysis, and identification. They are widely used in various fields, including industrial automation, medical imaging, security monitoring, and traffic management. The main function of these devices is to capture optical images of objects and then process these images using image processing and analysis algorithms to achieve tasks such as target detection, identification, and measurement. A typical visual inspection device includes: a camera, a light source, a lens, image processing software and algorithms, and a control system. Different visual inspection devices can be customized and configured according to specific application needs to meet various inspection tasks in different industries and environments. The development and application of these devices have driven progress in automated and intelligent production, monitoring, and service sectors.

[0003] Existing visual inspection devices generally consist of multiple cameras arranged in parallel with the addition of a light source structure to simultaneously inspect multiple products. The added light source structure is typically a continuous array of LED beads positioned to the side of the camera, reflecting light onto the product through a semi-transparent mirror. However, direct illumination from the LED beads causes scattering, meaning the light from the LED beads is conical, with the upper portion of the light shining directly onto the camera instead of the product. This results in an overly bright and blurry image. When the camera is identifying the position of a product (such as a TV backlight lens), it cannot clearly identify the eight circular patterns used for positioning on the product, thus failing to accurately calculate the product's center position.

[0004] Therefore, it is necessary to propose a coaxial light source structure for the module camera to solve the problem of astigmatism affecting the camera's acquisition of clear images, which will facilitate accurate visual inspection of the product in the future. Utility Model Content

[0005] To address the aforementioned issues, this invention proposes a coaxial light source structure for a modular camera to resolve the problem of astigmatism affecting the camera's ability to acquire clear images, thereby facilitating accurate visual inspection of the product in the future.

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

[0007] This utility model proposes a coaxial light source structure for a modular camera, including a camera module and a coaxial light assembly. The camera module is fixedly connected to one side of the coaxial light assembly and faces the coaxial light assembly. The coaxial light assembly includes a mounting frame, a coaxial lamp plate, a coaxial filter plate, a semi-transparent mirror, and optical glass. The optical glass is fixedly connected to one end of the mounting frame and close to the camera module. The semi-transparent mirror is inclined and fixedly connected inside the mounting frame. The coaxial lamp plate is fixedly connected to the inner wall of the mounting frame and faces the semi-transparent mirror. The coaxial filter plate covers the coaxial lamp plate and is fixedly connected to the mounting frame.

[0008] Furthermore, the coaxial lamp plate is provided with a plurality of first light-emitting parts, which are arranged in sequence, and the coaxial filter plate is provided with a filter part, which covers the plurality of first light-emitting parts.

[0009] Furthermore, the coaxial lamp plate is provided with a plurality of second light-emitting parts, which are arranged in sequence and correspond one-to-one with a plurality of first light-emitting parts. The second light-emitting parts are arranged around the first light-emitting parts, and the filter part covers both the plurality of first light-emitting parts and the plurality of second light-emitting parts.

[0010] Furthermore, the first light-emitting part is provided with a plurality of first lamp beads, which are distributed in an array. The light-filtering part is provided with a plurality of first light-transmitting holes, which correspond one-to-one with and are aligned with the plurality of first lamp beads. The plurality of first light-transmitting holes are distributed in an array.

[0011] Furthermore, the diameter of the first light-transmitting hole is smaller than the diameter of the first lamp bead.

[0012] Furthermore, the second light-emitting part is provided with a plurality of second lamp beads, which are arranged around the first light-emitting part, and the light-filtering part is provided with a plurality of second light-transmitting holes, which correspond one-to-one with and are aligned with the plurality of second lamp beads.

[0013] Furthermore, the diameter of the second light-transmitting hole is smaller than the diameter of the second lamp bead.

[0014] Furthermore, the thickness of the filter portion is 3.5 to 4.0 mm.

[0015] Furthermore, a storage groove is provided on one side of the coaxial filter plate, and the first light-emitting part and the second light-emitting part are both housed in the storage groove.

[0016] Furthermore, the inner side of the mounting bracket is provided with a light-absorbing cloth, which is located opposite the coaxial lamp plate.

[0017] The beneficial effects of this utility model are:

[0018] This invention employs a coaxial optical assembly to enhance the light source of the camera module. A coaxial filter is added in front of the coaxial light source plate to cover it, allowing the light emitted from the coaxial light source plate to directly illuminate the semi-transparent mirror along a straight line under the action of the coaxial filter. The light then shines through the semi-transparent mirror onto the surface of the product to be inspected. This prevents the light emitted from the coaxial light source plate from scattering towards the camera module, avoiding astigmatism and enabling the camera module to acquire clear images. In summary, the coaxial light source structure of this module effectively solves the problem of astigmatism affecting the camera's ability to acquire clear images, thus facilitating accurate visual inspection of the product. Attached Figure Description

[0019] Figure 1 This is an exploded view of the coaxial light source structure of the module camera of this utility model;

[0020] Figure 2 This is a cross-sectional view of the coaxial light source structure of the module camera of this utility model;

[0021] Figure 3 This is a schematic diagram of the coaxial lamp plate of the module camera coaxial light source structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the coaxial filter plate of the coaxial light source structure of the module camera of this utility model.

[0023] The attached figures are labeled as follows:

[0024] Camera module 1;

[0025] Coaxial light assembly 2, mounting bracket 21, light-absorbing cloth 211, coaxial light plate 22, first light-emitting part 221, first light bead 2211, second light-emitting part 222, second light bead 2221, coaxial filter plate 23, filter part 231, first light-transmitting hole 2311, second light-transmitting hole 2312, storage slot 232, semi-transparent and semi-reflective mirror 24, optical glass 25. Detailed Implementation

[0026] To more clearly and completely illustrate the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, will further explain this utility model.

[0027] Please refer to Figures 1-4This utility model proposes a coaxial light source structure for a modular camera, including a camera module 1 and a coaxial light assembly 2. The camera module 1 consists of multiple cameras arranged in parallel. The camera module 1 is fixedly connected to one side of the coaxial light assembly 2 and faces the coaxial light assembly 2. The coaxial light assembly 2 includes a mounting frame 21, a coaxial light plate 22, a coaxial filter plate 23, a semi-transparent mirror 24, and an optical glass 25. The optical glass 25 is fixedly connected to one end of the mounting frame 21 and close to the camera module 1. The optical glass 25 is used to improve the clarity of the product outline captured by the camera module 1. The coaxial filter plate 23 is made of black acetal material. The semi-transparent mirror 24 is inclined and fixedly connected to the mounting frame 21. The coaxial light plate 22 is fixedly connected to the inner wall of the mounting frame 21 and faces the semi-transparent mirror 24. The coaxial filter plate 23 covers the coaxial light plate 22 and is fixedly connected to the mounting frame 21.

[0028] In this embodiment, a coaxial light assembly 2 is used to add a light source to the camera module 1. A coaxial filter 23 is added in front of the coaxial light plate 22 to cover it, so that the light emitted by the coaxial light plate 22 is directly irradiated onto the semi-transparent mirror 24 in a straight line under the action of the coaxial filter 23. That is, only the vertical positive light is retained. The semi-transparent mirror 24 is tilted in the mounting bracket 21, so that the light emitted by the coaxial light plate 22 and the semi-transparent mirror 24 form an angle. Then, the light is reflected vertically onto the surface of the product to be inspected through the semi-transparent mirror 24. In this way, the outline of the product can be directly captured by the camera module 1. At the same time, the light emitted by the coaxial light plate 22 will not be scattered in the direction of the camera module 1, avoiding the astigmatism effect on the camera module 1, so that the camera module 1 can clearly capture the image.

[0029] In summary, the coaxial light source structure of this module camera can effectively solve the problem of astigmatism affecting the camera's ability to obtain clear images, thus facilitating accurate visual inspection of the product in the future.

[0030] In this embodiment, a plurality of first light-emitting parts 221 are protruding on the coaxial light plate 22 and arranged in sequence. A filter part 231 is provided on the coaxial filter plate 23 and covers the plurality of first light-emitting parts 221. The arrangement of the plurality of first light-emitting parts 221 allows the coaxial light plate 22 to adjust the brightness of each first light-emitting part 221 to reduce the light difference between adjacent images acquired by the camera module 1. At the same time, the filter part 231 can filter the light of the first light-emitting parts 221, that is, filter out the light illuminating at an oblique angle and retain only the vertical positive light emitted to the outside.

[0031] In this embodiment, a plurality of second light-emitting parts 222 are protruding on the coaxial light plate 22. The plurality of second light-emitting parts 222 are arranged sequentially, and each of the plurality of second light-emitting parts 222 corresponds to a plurality of first light-emitting parts 221. The second light-emitting parts 222 are arranged around the first light-emitting parts 221. The filter part 231 covers both the plurality of first light-emitting parts 221 and the plurality of second light-emitting parts 222. The arrangement of the plurality of second light-emitting parts 222 allows the coaxial light plate 22 to adjust the brightness of each second light-emitting part 222. The arrangement of the second light-emitting parts 222 around the first light-emitting parts 221 can assist the first light-emitting parts 221 in providing supplementary lighting to adjust the brightness of the border in the image acquired by the camera module 1. At the same time, the filter part 231 can filter the light from the second light-emitting parts 222, that is, filter out the light shone at an angle, and only retain the vertical positive light emitted to the outside.

[0032] In this embodiment, the first light-emitting part 221 is provided with a plurality of first lamp beads 2211, which are arranged in an array. The filter part 231 is provided with a plurality of first light-transmitting holes 2311, which correspond one-to-one with and are aligned with the plurality of first lamp beads 2211. The plurality of first light-transmitting holes 2311 are arranged in an array. When supplementing the camera module 1, the plurality of first lamp beads 2211 emit light simultaneously, and the light of each first lamp bead 2211 is transmitted through the corresponding first light-transmitting hole 2311, so that the transmitted light retains only the vertical positive light that illuminates the semi-transparent and semi-reflective mirror 24.

[0033] In this embodiment, the diameter of the first light-transmitting hole 2311 is smaller than the diameter of the first lamp bead 2211, which can greatly eliminate light from other angles, thereby retaining vertical positive light to illuminate the semi-transparent and semi-reflective mirror 24.

[0034] In this embodiment, the second light-emitting part 222 is provided with a plurality of second lamp beads 2221, which are arranged around the first light-emitting part 221. The filter part 231 is provided with a plurality of second light-transmitting holes 2312, which correspond to and are aligned with the plurality of second lamp beads 2221. When supplementing the camera module 1, the plurality of second lamp beads 2221 emit light according to the brightness of the image acquired by the camera module 1, and the brightness is set according to the brightness of the border in the image. The light of each second lamp bead 2221 is transmitted from the corresponding second light-transmitting hole 2312, so that the transmitted light retains only the vertical positive light that illuminates the semi-transparent and semi-reflective mirror 24.

[0035] In this embodiment, the diameter of the second light-transmitting hole 2312 is smaller than the diameter of the second lamp bead 2221, which can greatly eliminate light from other angles, thereby retaining vertical positive light to illuminate the semi-transparent and semi-reflective mirror 24.

[0036] In this embodiment, the thickness of the filter section 231 is 3.5 to 4.0 mm. This thickness allows the light from the other angles of the lamp to be consumed on the inner wall of the light-transmitting hole, thereby retaining the vertical positive light to illuminate the semi-transparent and semi-reflective mirror 24.

[0037] In this embodiment, a storage groove 232 is provided on one side of the coaxial filter plate 23. The first light-emitting part 221 and the second light-emitting part 222 are both housed in the storage groove 232. The storage groove 232 is used to provide a storage space for the first light-emitting part 221 and the second light-emitting part 222, so that the light emitted by the first light-emitting part 221 and the second light-emitting part 222 can be concentrated and emitted from the filter plate 231 to the outside.

[0038] In this embodiment, the inner side of the mounting bracket 21 is provided with a light-absorbing cloth 211, which is located opposite the coaxial lamp plate 22. The function of the light-absorbing cloth 211 is to absorb the light emitted by the first light-emitting part 221 and the second light-emitting part 222 after passing through the semi-transparent mirror 24, so that it cannot affect the clear acquisition of product images by the camera module 1 through diffuse reflection.

[0039] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A coaxial light source structure for a modular camera, comprising a camera module and a coaxial light assembly, wherein the camera module is fixedly connected to one side of the coaxial light assembly and faces the coaxial light assembly, characterized in that, The coaxial optical assembly includes a mounting frame, a coaxial light plate, a coaxial filter plate, a semi-transparent mirror, and optical glass. The optical glass is fixedly connected to one end of the mounting frame and close to the camera module. The semi-transparent mirror is inclined and fixedly connected inside the mounting frame. The coaxial light plate is fixedly connected to the inner wall of the mounting frame and faces the semi-transparent mirror. The coaxial filter plate covers the coaxial light plate and is fixedly connected to the mounting frame.

2. The coaxial light source structure for a module camera according to claim 1, characterized in that, The coaxial lamp plate is provided with a plurality of first light-emitting parts, which are arranged in sequence. The coaxial filter plate is provided with a filter part, which covers the plurality of first light-emitting parts.

3. The coaxial light source structure for a module camera according to claim 2, characterized in that, The coaxial lamp plate is provided with a plurality of second light-emitting parts, which are arranged in sequence. Each of the plurality of second light-emitting parts corresponds to a plurality of first light-emitting parts. The second light-emitting parts are arranged around the first light-emitting parts. The filter part covers both the plurality of first light-emitting parts and the plurality of second light-emitting parts.

4. The coaxial light source structure for a module camera according to claim 2, characterized in that, The first light-emitting part is provided with a plurality of first lamp beads, which are distributed in an array. The light-filtering part is provided with a plurality of first light-transmitting holes, which correspond one-to-one with and are aligned with the plurality of first lamp beads. The plurality of first light-transmitting holes are distributed in an array.

5. The coaxial light source structure for a module camera according to claim 4, characterized in that, The diameter of the first light-transmitting hole is smaller than the diameter of the first lamp bead.

6. The coaxial light source structure for a module camera according to claim 3, characterized in that, The second light-emitting part is provided with a plurality of second lamp beads, which are arranged around the first light-emitting part. The light-filtering part is provided with a plurality of second light-transmitting holes, which correspond to and are aligned with the plurality of second lamp beads.

7. The coaxial light source structure for a module camera according to claim 6, characterized in that, The diameter of the second light-transmitting hole is smaller than the diameter of the second lamp bead.

8. The coaxial light source structure for a module camera according to claim 2, characterized in that, The thickness of the filter portion is 3.5–4.0 mm.

9. The coaxial light source structure for a module camera according to claim 3, characterized in that, The coaxial filter plate has a storage groove on one side, and the first light-emitting part and the second light-emitting part are both housed in the storage groove.

10. The coaxial light source structure for a module camera according to claim 1, characterized in that, The inner side of the mounting bracket is provided with a light-absorbing cloth, which is located opposite the coaxial lamp plate.

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