A line-scan camera detection device

Abstract

The application discloses a line-scan camera detection device, which comprises an imaging assembly, an optical lens assembly, a first mounting rack and a second mounting rack. The imaging assembly comprises a camera, a first adapter ring and a first lens. The first adapter ring is fixed with an imaging lens of the camera. The first lens is installed in the first adapter ring and located in front of the imaging lens. The optical lens assembly comprises a fixing seat, a receiving lens, a second adapter ring and a second lens. The second lens is installed in the second adapter ring. The fixing seat defines a through optical path channel. The receiving lens and the second adapter ring are sequentially accommodated in the optical path channel from bottom to top. The imaging assembly is installed on the first mounting rack, and the optical lens assembly is installed on the second mounting rack. The imaging lens of the camera, the first lens, the second lens and the receiving lens are coaxially arranged in the height direction. There is a gap between the imaging assembly and the optical lens assembly. The application can meet the requirements of equipment beam movement and height restoration imaging effect.

Description

Technical Field

[0001] This utility model relates to the technical field of light source detection devices, and in particular to a line scan camera detection device. Background Technology

[0002] In machine vision projects using online scanning cameras, a common technique for achieving high-resolution imaging under macro conditions is to install an extension tube between the camera and the lens. By adjusting the length of the extension tube, the magnification of the optical system can be changed to meet the requirements of precise detection.

[0003] However, as industrial automation equipment develops towards higher density and integration, the internal space utilization of the machines is extremely high, and their structures are becoming increasingly complex. Inside such highly integrated machines, there are often many mechanical beam components used to perform functions such as handling and positioning. These beams need to perform repeated horizontal or vertical movements within a limited space.

[0004] This leads to the inapplicability of the traditional "camera-extension tube-lens" combination scheme when the movement path of the mechanism's crossbeam interferes spatially with the extension tube, which is necessary to ensure imaging quality. As a rigid connector, the extension tube directly hinders the movement of the crossbeam. Therefore, existing technologies struggle to ensure macro imaging effects while simultaneously supporting the necessary internal mechanical movements of the device, limiting the design flexibility and application efficiency of highly integrated equipment. Utility Model Content

[0005] This application provides a line scan camera detection device that can satisfy the movement of the equipment beam while highly restoring the imaging effect.

[0006] This application provides a line scan camera detection device, including an imaging component, an optical lens assembly, a first mounting bracket, and a second mounting bracket. The imaging component includes a camera, a first adapter ring, and a first lens. The first adapter ring is fixed to the imaging lens of the camera, and the first lens is mounted inside the first adapter ring and located in front of the imaging lens. The optical lens assembly includes a mounting base, a receiving lens, a second adapter ring, and a second lens. The second lens is mounted inside the second adapter ring. The mounting base defines a through optical path channel, and the receiving lens and the second adapter ring are sequentially housed within the optical path channel from bottom to top. The imaging component is mounted on the first mounting bracket, and the optical lens assembly is mounted on the second mounting bracket. The imaging lens, the first lens, the second lens, and the receiving lens of the camera are coaxially arranged in the height direction. A gap exists between the imaging component and the optical lens assembly, and the gap is configured to allow the movement beam of the device to pass through.

[0007] In some embodiments, the inner side of the first adapter ring is provided with a first limiting portion to prevent the first lens from detaching.

[0008] In some embodiments, the inner side of the second adapter ring is provided with a second limiting portion to prevent the second lens from detaching.

[0009] In some embodiments, the first limiting portion and the second limiting portion are respectively annular stepped surfaces formed on the inner sides of the first transition ring and the second transition ring.

[0010] In some embodiments, the first adapter ring is threadedly connected to the camera.

[0011] In some embodiments, the second adapter ring is threadedly connected to the receiving lens.

[0012] In some embodiments, the first lens is fixed to the first adapter ring by adhesive.

[0013] In some embodiments, the second lens is fixed to the second adapter ring by adhesive.

[0014] In some embodiments, the receiving lens is connected to the mounting screw.

[0015] In some embodiments, the mounting base includes a cylindrical portion and a mounting portion connected to one end of the cylindrical portion and protruding outward. The cylindrical portion defines the optical path channel and is provided with a fixing hole for connection with the receiving lens screw. The mounting portion is used for fixed connection with the second mounting bracket.

[0016] In some embodiments, the receiving lens is provided with an adjustment knob, and the cylindrical portion is provided with a clearance groove corresponding to the adjustment knob, with the adjustment knob located within the clearance groove.

[0017] In some embodiments, the first mounting bracket and / or the second mounting bracket is an adjustable mounting bracket, the adjustable mounting bracket including a base, a drive unit disposed on the base, and a mounting platform driven by the drive unit, wherein the camera and / or the fixture is mounted on the mounting platform.

[0018] In some embodiments, the drive unit includes at least two drive members that are driven together, the two drive members being configured to enable the mounting platform to perform translational or rotational adjustments in at least two degrees of freedom in a plane.

[0019] Based on the line scan camera inspection device of this application embodiment, the camera's imaging lens, first lens, second lens, and receiving lens are sequentially coaxial in the height direction, forming a complete detection optical path. The camera can sequentially pass through this detection optical path to perform imaging inspection on the workpiece located directly below the receiving lens. By designing the imaging component and the optical lens component as two spatially separated independent modules, and forming a gap between them, this gap is constructed to allow the moving beam in the device to reciprocate through this space, thereby fundamentally solving the motion interference problem caused by the physical space occupied by traditional extension tubes in high-density integrated devices. Compared with related technologies that require the use of extension tubes to ensure macro imaging, thus creating an irreconcilable contradiction with the movement of the mechanism beam, this solution, through an innovative "optical path segmentation" design, perfectly accommodates the spatial layout and motion requirements of the device while ensuring imaging performance. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a line scan camera detection device provided in an embodiment of this application;

[0022] Figure 2 This is a cross-sectional schematic diagram of a line scan camera detection device provided in an embodiment of this application;

[0023] Figure 3 An exploded view of an imaging component provided in an embodiment of this application;

[0024] Figure 4 This is an exploded view of an optical lens assembly provided in an embodiment of this application.

[0025] Explanation of icon numbers:

[0026] 1. Line scan camera detection device; 100. Imaging assembly; 110. Camera; 120. First adapter ring; 121. First limiting part; 130. First lens; 200. Optical lens assembly; 210. Fixing base; 211. Cylindrical part; 212. Mounting part; 213. Clearance groove; 214. Optical path channel; 220. Receiving lens; 221. Adjustment knob; 230. Second adapter ring; 231. Second limiting part; 240. Second lens; 300. Gap; 400. First mounting bracket; 500. Second mounting bracket.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained with reference to the accompanying drawings and embodiments. Detailed Implementation

[0028] To make the objectives, technical solutions and advantages of this utility model clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0029] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this invention as detailed in the appended claims.

[0030] In the description of this utility model, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] Please see Figure 1 This application provides a line scan camera detection device 1, which is particularly suitable for macro detection scenarios where there is interference from moving parts within a high-density integrated device. The line scan camera detection device 1 mainly includes an imaging component 100, an optical lens component 200, a first mounting bracket 400, and a second mounting bracket 500.

[0033] Please refer to the following: Figure 2 and Figure 3 The imaging assembly 100 includes a camera 110, a first adapter ring 120, and a first lens 130. The camera 110 is mounted on the first mounting bracket 400, and the mounting methods include, but are not limited to: direct screw fastening, transition connection by means of a quick-release plate, or fastening the camera 110 with a clamping mechanism, so as to facilitate quick assembly and disassembly and initial positioning.

[0034] The first lens 130 is housed within the inner cavity of the first adapter ring 120 and is located in front of the imaging lens of the camera 110. It is preferably fixed using optical adhesive, such as UV-curable adhesive or epoxy resin, to meet the needs of rapid positioning or high-strength applications, respectively. To further ensure the axial positioning of the lens, a first limiting part 121 is provided on the inner sidewall of the first adapter ring 120 at the end away from the imaging lens of the camera 110 to prevent the first lens 130 from loosening. In other embodiments, the first lens 130 can also be fixed by mechanical clamping, for example, by providing an internal thread on the inner side of the first adapter ring 120 and engaging a pressure ring, tightening the pressure ring to press the first lens 130 onto the first limiting part 121. This method facilitates subsequent maintenance and replacement.

[0035] The first lens 130 is mounted in the inner cavity of the first adapter ring 120 and is located in front of the imaging lens of the camera 110. It is preferably fixed by bonding with optical adhesive. The optical adhesive can be a UV-curable adhesive, which is easy to apply and position; or it can be an epoxy resin adhesive, which provides stronger long-term bonding strength. A first limiting part 121 is provided on the outer end of the inner wall of the first adapter ring 120 (i.e., in the direction away from the imaging lens of the camera 110). The first limiting part 121 is used to axially limit the first lens 130 and prevent it from loosening. In other embodiments, the first lens 130 and the first adapter ring 120 can also be fixed by a mechanical clamping scheme. For example, an internal thread is provided on the inner side of the first adapter ring 120, and a pressure ring is screwed in. By tightening the pressure ring, the first lens 130 is pressed against the first limiting part 121 on its inner side. This mechanical fixing method facilitates subsequent maintenance and replacement.

[0036] Please refer to the following: Figure 2 and Figure 4 The optical lens assembly 200 includes a mounting base 210, a receiving lens 220, a second adapter ring 230, and a second lens 240. The mounting base 210 defines a through optical path channel 214, within which the receiving lens 220, the second adapter ring 230, and the second lens 240 are housed. The receiving lens 220 is disposed at the lower part of the optical path channel 214 defined by the mounting base 210. Its fixing method can be screw connection, snap-fit ​​connection, or pin connection, etc. In one specific embodiment, a radial fixing hole can be provided on the side wall of the mounting base 210, and a corresponding threaded hole can be provided on the lens body of the receiving lens 220. A screw is passed through the fixing hole and locked into the threaded hole to achieve fixing between the two. Alternatively, a radial threaded hole can be provided on the side wall of the mounting base 210, and a screw can be directly pressed against the lens body of the receiving lens 220 to achieve fastening.

[0037] The second adapter ring 230 is connected to the top of the receiving lens 220 and is used to accommodate and fix the second lens 240. The connection method between it and the receiving lens 220 can refer to the connection method between the first adapter ring 120 and the imaging lens, such as using a threaded connection, a snap-fit ​​connection, or a combination of pins and screws.

[0038] The second lens 240 is installed in the inner cavity of the second adapter ring 230 and is located above the receiving lens 220. A second limiting part 231 is provided on the inner sidewall of the second adapter ring 230 at the end away from the receiving lens 220 for axially limiting the second lens 240. The second lens 240 can be fixed in the same way as the first lens 130, using optical adhesive bonding or mechanical clamping with a pressure ring.

[0039] In some embodiments, the first limiting portion 121 and the second limiting portion 231 are respectively annular stepped surfaces formed inside the first transition ring 120 and the second transition ring 230. This structure helps to increase the contact area and improve the limiting stability. In other embodiments, the limiting portion may also be configured as one or more independent limiting protrusion structures.

[0040] To facilitate the connection between the mounting base 210 and the second mounting bracket 500, as well as the connection between the mounting base 210 and the receiving lens 220, the structure of the mounting base 210 has been optimized in this embodiment. Please refer to... Figure 1 The fixing base 210 includes a cylindrical portion 211 and a mounting portion 212 connected to one end of the cylindrical portion 211 and protruding outward.

[0041] The mounting part 212 is preferably a flange structure with through holes, which can be fixedly connected to the second mounting bracket 500 by fasteners such as screws, thereby stably mounting the entire optical lens assembly 200 on the equipment.

[0042] The interior of the cylindrical portion 211 forms an optical path channel 214, and radial fixing holes (not shown in the figure) are provided on its side wall. The receiving lens 220 is housed in the cylindrical portion 211, and the receiving lens 220 is reliably fixed to the mounting base 210 by passing a screw through the fixing hole and locking it into the corresponding threaded hole on the lens body of the receiving lens 220.

[0043] Furthermore, to facilitate operation and avoid structural interference, the receiving lens 220 is equipped with an adjustment knob 221 for adjusting the aperture or focal length. Correspondingly, a clearance groove 213 is formed on the side wall of the cylindrical portion 211. When the receiving lens 220 is installed in place, its adjustment knob 221 is precisely located within this clearance groove 213, providing operating space for manual or tool-operated adjustment knob 221, ensuring the feasibility of adjustment function, while maintaining the external cleanliness of the structure.

[0044] In this application, the imaging lens, first lens 130, second lens 240, and receiving lens 220 of the camera 110 are coaxial in the height direction, forming a complete detection optical path. The camera 110 can sequentially pass through this detection optical path to perform imaging detection on the workpiece located directly below the receiving lens 220. By designing the imaging assembly 100 and the optical lens assembly 200 as two spatially separated independent modules, and forming a specific gap 300 between them, this gap 300 is constructed to allow the moving beam in the equipment (such as a mechanical gripper, product conveyor belt, etc., which need to pass between the imaging assembly 100 and the optical lens assembly 200) to reciprocate through this space, thus fundamentally solving the motion interference problem caused by the physical space occupied by traditional extension tubes in high-density integrated equipment. Compared with related technologies that require the use of extension tubes to ensure macro imaging, thus creating an irreconcilable contradiction with the movement of the mechanism beam, this solution, through an innovative "optical path segmentation" design, perfectly accommodates the spatial layout and motion requirements of the equipment while ensuring imaging performance.

[0045] In terms of optical performance, the aperture or focal length of the receiving lens 220 can be adjusted by operating the adjustment knob 221 to adapt to different imaging conditions. Furthermore, by precisely designing the optical parameters (including but not limited to curvature, thickness, and material) of the first lens 130 and the second lens 240, the changes in the optical path caused by eliminating the physical extension tube can be effectively compensated, thereby ensuring that key optical indicators such as imaging magnification, image field flatness, and transmittance are maintained at the expected levels, meeting the imaging requirements of macro detection. It should be noted that the core innovation of this invention lies in solving the spatial interference problem through a separate modular structure and the design of the gap 300. The specific optical parameters of the first lens 130 and the second lens 240 can be determined by those skilled in the art based on actual optical path requirements through conventional optical design or a limited number of experiments; this application does not specifically limit them.

[0046] In some embodiments, the first mounting bracket 400 and / or the second mounting bracket 500 are adjustable mounting brackets used to achieve precise alignment between the imaging assembly 100 and the optical lens assembly 200, so as to compensate for installation errors and ensure the coaxial accuracy of the optical path.

[0047] The adjustable mounting bracket includes a base, a mounting platform, and a drive unit disposed on the base. The camera 110 or the mounting mount 210 is fixedly mounted on the mounting platform. The drive unit includes at least two drive members that, by coordinating their operation, can drive the mounting platform to make at least two degrees of freedom of fine adjustment relative to the base within a plane (e.g., a horizontal plane). These degrees of freedom include translation along directions perpendicular to each other (e.g., the X and Y axes) and / or rotation about an axis perpendicular to the plane (e.g., the Z axis).

[0048] As a preferred transmission connection method, the drive component can be, for example, a micrometer or a micrometer head. Two drive components can be connected via a worm gear mechanism or a precision linkage mechanism, thereby converting the linear motion of the drive component into the translational or rotational motion required by the mounting platform. In another embodiment, the base and the mounting platform can be connected via a flexible hinge structure, in which case the drive component (such as a set screw) acts directly on the flexible hinge, causing it to produce controllable elastic deformation, thereby achieving backlash-free, high-resolution micro-displacement adjustment.

[0049] The adjustable mounting bracket may also be equipped with a locking mechanism, which locks the mounting platform relative to the base after adjustment to ensure the stability of the equipment during operation.

[0050] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0051] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A line scan camera detection device (1), characterized in that, include: An imaging assembly (100) includes a camera (110), a first adapter ring (120), and a first lens (130). The first adapter ring (120) is fixed to the imaging lens of the camera (110), and the first lens (130) is installed inside the first adapter ring (120) and located in front of the imaging lens. An optical lens assembly (200) includes a mounting base (210), a receiving lens (220), a second adapter ring (230), and a second lens (240). The second lens (240) is mounted within the second adapter ring (230). The mounting base (210) defines a through optical path channel (214). The receiving lens (220) and the second adapter ring (230) are sequentially housed within the optical path channel (214) from bottom to top. A first mounting bracket (400) and a second mounting bracket (500), wherein the imaging assembly (100) is mounted on the first mounting bracket (400) and the optical lens assembly (200) is mounted on the second mounting bracket (500); The imaging lens, the first lens (130), the second lens (240), and the receiving lens (220) of the camera (110) are coaxially arranged in the height direction, and there is a gap (300) between the imaging assembly (100) and the optical lens assembly (200), the gap (300) being configured to allow the movement beam of the device to pass through.

2. The line scan camera detection device according to claim 1, characterized in that, The inner side of the first adapter ring (120) facing outward is provided with a first limiting part (121) to prevent the first lens (130) from detaching; And / or, the inner side of the second adapter ring (230) facing outward is provided with a second limiting part (231) to prevent the second lens (240) from detaching.

3. The line scan camera detection device according to claim 2, characterized in that, The first limiting part (121) and the second limiting part (231) are respectively annular steps formed on the inner side of the first transition ring (120) and the second transition ring (230).

4. The line scan camera detection device (1) as described in claim 1, characterized in that, The first adapter ring (120) is threadedly connected to the camera (110); And / or, the second adapter ring (230) is threadedly connected to the receiving lens (220).

5. The line scan camera detection device (1) as described in claim 1, characterized in that, The first lens (130) is fixed inside the first adapter ring (120) with glue; And / or, the second lens (240) is fixed to the second adapter ring (230) by adhesive.

6. The line scan camera detection device according to claim 1, characterized in that, The receiving lens (220) is screwed to the mounting base (210).

7. The line scan camera detection device according to claim 6, characterized in that, The mounting base (210) includes a cylindrical portion (211) and a mounting portion (212) connected to one end of the cylindrical portion (211) and protruding outward. The cylindrical portion (211) defines the optical path channel (214) and is provided with a fixing hole for screw connection with the receiving lens (220). The mounting portion (212) is used for fixed connection with the second mounting bracket (500).

8. The line scan camera detection device according to claim 7, characterized in that, The receiving lens (220) is provided with an adjustment knob (221), and the cylindrical part (211) is provided with a relief groove (213) corresponding to the adjustment knob (221), and the adjustment knob (221) is located in the relief groove (213).

9. The line scan camera detection device according to any one of claims 1 to 8, characterized in that, The first mounting bracket (400) and / or the second mounting bracket (500) are adjustable mounting brackets. The adjustable mounting bracket includes a base, a drive unit disposed on the base, and a mounting platform driven by the drive unit. The camera (110) and / or the fixture (210) are mounted on the mounting platform.

10. The line scan camera detection device according to claim 9, characterized in that, The drive unit includes at least two drive components that are connected by transmission, and the two drive components drive the mounting platform to perform translational or rotational adjustments in at least two degrees of freedom in a plane.

Images