CN211830951U - Image acquisition device - Google Patents

Abstract

The utility model provides an image acquisition device, include from last imaging camera, camera lens and the light source that sets gradually extremely down. The imaging camera and the lens are coaxially arranged, so that light rays passing through the lens can be focused on a photosensitive chip of the imaging camera. The image acquisition device further comprises a driving mechanism, a moving point location is preset on the driving mechanism, and the driving mechanism drives the imaging camera and the lens to move in the longitudinal direction to enable the imaging camera to acquire images in the moving point location. Through setting up actuating mechanism at image acquisition device, actuating mechanism moves imaging camera and camera lens according to the point location and moves the signal drive and move to corresponding removal point location, carries out image acquisition to the product that awaits measuring, and this image acquisition device has multiple formation of image effect like this, can replace the mode that traditional single-stop sola picture was gathered, can greatly save space, improves the utilization ratio of vision module. Moreover, hardware cost is saved, and detection cost is low.

Description

Image acquisition device

Technical Field

The utility model relates to an appearance imperfections detects technical field, especially relates to an image acquisition device.

Background

The product has many defects caused by previous processes in the production process. Before leaving the factory, the appearance of the product needs to be detected, and the appearance of the product is ensured to meet the requirement. The traditional detection means depends on manual detection, and people look at the microscope with heads down under strong light for a long time, so that the eyes and the neck are easily damaged; moreover, the detection stability is not high, and the quality hidden trouble exists.

In order to solve the above problems, an image capturing device is usually used to detect the appearance defects of the product. One set of vision module is settled to this kind of image acquisition device's a worker station, comes the defect of gathering a position of product, just needs a lot of worker stations when facing product multiposition defect detection, and the space that detection device occupied like this can be very big, and the hardware cost also can be very high moreover. In addition, an array zoom lens is adopted in an image acquisition device, and the array zoom lens is controlled by software to zoom quickly, but the price of one set of vision module is very high, so that the factory detection cost is greatly increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an image acquisition device; the image acquisition device has various imaging effects, can replace the traditional single-station single-picture acquisition mode, can greatly save space and improve the utilization rate of the vision module; moreover, hardware cost is saved, and detection cost is low.

The technical scheme of the utility model as follows:

an image acquisition device comprises an imaging camera, a lens and a light source which are sequentially arranged from top to bottom, wherein the lens and the imaging camera are coaxially arranged, so that light rays passing through the lens can be focused on a photosensitive chip of the imaging camera; and

and the driving mechanism drives the imaging camera and the lens to longitudinally perform point location movement, so that the imaging camera performs image acquisition at the moving point location.

The technical solution is further explained below:

in one embodiment, the driving mechanism includes a servo motor and a lead screw module, the lead screw module is disposed on a power output shaft of the servo motor, and the imaging camera and the lens are connected to the lead screw module.

In one embodiment, the image capturing device further includes a carrier plate, the carrier plate is connected to the moving part of the driving mechanism, and the imaging camera and the lens are disposed on the carrier plate.

In one embodiment, the image capturing device further includes a fixing member for fixing the lens, and the fixing member is disposed on the carrier plate and corresponds to the lens.

In one embodiment, the fixing member includes a first hoop block and a second hoop block connected to the carrier plate, the first hoop block has a semicircular groove, the side of the second hoop block away from the carrier plate correspondingly has a semicircular groove, and the first hoop block and the second hoop block are connected in a matched manner.

In one embodiment, the light source includes a first annular light source and a second annular light source, the first annular light source is disposed on the carrier plate, and the first annular light source is close to the lens and is disposed coaxially with the lens; the second annular light source is arranged on one side, far away from the lens, of the first annular light source and is coaxially arranged with the first annular light source.

In one embodiment, the image capturing device further includes a first fastener and a second connecting plate, the second connecting plate is longitudinally provided with a first strip-shaped hole, the carrier plate is correspondingly provided with a first mounting hole, and the first fastener is inserted into the first strip-shaped hole and the first mounting hole;

the image acquisition device further comprises a second fastener, a third fastener and a second mounting plate which is transversely arranged, the second mounting plate is provided with a light hole, the first annular light source is arranged at the bottom of the second mounting plate, and the first annular light source corresponds to the light hole; the second mounting plate is provided with a second strip-shaped hole along the length direction, the second connecting plate is correspondingly provided with a second mounting hole, and the second fastener penetrates through the second strip-shaped hole and the second mounting hole;

the second mounting panel is equipped with third bar hole along its width direction, first annular light source correspondence is equipped with the third mounting hole, the third fastener is worn to locate third bar hole and third mounting hole.

In one embodiment, the image acquisition device further comprises a rack, a fourth fastener and a transversely arranged third connecting plate, wherein the rack is longitudinally provided with a fourth hole, the side part of the third connecting plate is correspondingly provided with a fourth mounting hole, and the fourth fastener is arranged in the fourth hole and the fourth mounting hole in a penetrating manner;

the image acquisition device further comprises a fifth fastener, a sixth fastener and a third mounting plate transversely arranged on the third connecting plate, the second annular light source is arranged at the top of the third mounting plate, the third connecting plate is provided with a fifth strip-shaped hole, the third mounting plate is correspondingly provided with a fifth mounting hole, and the fifth fastener penetrates through the fifth strip-shaped hole and the fifth mounting hole;

the third mounting panel is equipped with sixth bar hole, second annular light source correspondence is equipped with the sixth mounting hole, the sixth fastener is worn to establish sixth bar hole and sixth mounting hole.

In one embodiment, the lens is a double telecentric lens.

In one embodiment, the imaging camera is a CMOS global exposure camera.

The beneficial effects of the utility model reside in that: the imaging camera, the lens and the light source are sequentially arranged from top to bottom. When the appearance performance of the product to be detected needs to be detected, the product to be detected is placed below the lens. The driving mechanism drives the imaging camera and the lens to move to corresponding moving point positions according to a preset point position moving signal, the light source is turned on, light emitted by the light source irradiates on a product to be detected, the light penetrates through the lens after being refracted or reflected, imaging is carried out on the imaging camera, and image acquisition of the product to be detected is achieved. Through setting up actuating mechanism at image acquisition device, actuating mechanism moves imaging camera and camera lens according to the point location and moves the signal drive and move to corresponding removal point location, carries out image acquisition to the product that awaits measuring, and this image acquisition device has multiple formation of image effect like this, can replace the mode that traditional single-stop sola picture was gathered, can greatly save space, improves the utilization ratio of vision module. Moreover, hardware cost is saved, and detection cost is low.

Drawings

Fig. 1 is a schematic structural view of an image capturing device according to a first embodiment of the present invention;

FIG. 2 is a side view of the image detection apparatus shown in FIG. 1;

FIG. 3 is an exploded view of the image capturing device shown in FIG. 1;

FIG. 4 is an exploded view of the image capturing device shown in FIG. 3 at A;

fig. 5 is an exploded view of the image capturing device shown in fig. 3 at B.

Description of reference numerals:

10. an imaging camera; 20. a lens; 30. a light source; 31. a first annular light source; 311. a third mounting hole; 32. a second annular light source; 321. a sixth mounting hole; 40. a drive mechanism; 41. a servo motor; 42. a screw rod module; 50. a carrier plate; 51. a first fixing hole; 52. a first mounting hole; 60. a stabilizing member; 61. a first hoop block; 62. a second hoop block; 70. a first connecting plate; 71. a first guide bar hole; 72. a first mounting plate; 721. a second fixing hole; 80. a second connecting plate; 81. a first bar-shaped hole; 82. a second mounting plate; 821. a light-transmitting hole; 822. a second bar-shaped hole; 823. a third strip-shaped hole; 90. a frame; 91. a fourth aperture; 92. a third connecting plate; 921. a fifth strip-shaped hole; 93. a third mounting plate; 931. a fifth mounting hole; 932. a sixth strip-shaped hole.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1 and 2, an embodiment of the present invention provides an image capturing device, which includes an imaging camera 10, a lens 20, and a light source 30 sequentially arranged from top to bottom. The imaging camera 10 is disposed coaxially with the lens 20, so that light passing through the lens 20 can be focused on a photosensitive chip of the imaging camera 10. The image acquisition device further comprises a driving mechanism 40, a moving point position is preset in the driving mechanism 40, and the driving mechanism 40 drives the imaging camera 10 and the lens 20 to move in the longitudinal direction to acquire an image at the moving point position by the imaging camera 10.

It should be noted that, the driving mechanism 40 sets the position of the moving point, and the driving mechanism 40 can automatically drive the imaging camera 10 and the lens 20 to move to the corresponding moving point according to the point movement signal, so that the imaging camera 10 collects a clear image at the moving point. It can be understood that the above-mentioned moving point location is a detection location capable of clearly imaging, and the moving point location can be adjusted according to different products, so as to achieve the purpose of detecting different products.

The image capturing device is provided with an imaging camera 10, a lens 20 and a light source 30 in sequence from top to bottom. When the appearance performance of the product to be detected needs to be detected, the product to be detected is placed below the lens 20. The driving mechanism 40 drives the imaging camera 10 and the lens 20 to move to corresponding moving point positions according to a preset point position moving signal, the light source 30 is turned on, light emitted by the light source 30 irradiates on a product to be detected, the light penetrates through the lens 20 after being refracted or reflected, imaging is carried out on the imaging camera 10, and image acquisition of the product to be detected is achieved. Through setting up actuating mechanism 40 at image acquisition device, actuating mechanism 40 moves to corresponding removal position according to position removal signal drive imaging camera 10 and camera lens 20, carries out image acquisition to the product that awaits measuring, and this image acquisition device has multiple formation of image effect like this, can replace the mode that traditional single-station sola picture was gathered, can greatly save space, improves the utilization ratio of vision module. Moreover, hardware cost is saved, and detection cost is low.

In one embodiment, referring to fig. 1 and 2, the driving mechanism 40 includes a servo motor 41 and a lead screw module 42. The lead screw module 42 is disposed on the power output shaft of the servo motor 41, and the imaging camera 10 and the lens 20 are connected to the lead screw module 42. When the appearance performance of the product to be detected needs to be detected, the servo motor 41 is started, the servo motor 41 drives the screw rod module 42 to move according to the point location moving signal, so as to drive the imaging camera 10 and the lens 20 to move to the corresponding moving point location, and the image of the product to be detected is collected at the moving point location. The servo motor 41 and the lead screw module 42 are used as driving power sources to drive the imaging camera 10 and the lens 20 to perform point location movement, so that the precision and accuracy of the point location movement of the lens 20 can be improved.

It should be noted that the servo motor 41 can adjust the input signal by signal feedback, compared to the stepping motor, so as to rapidly and accurately move the lens 20 in the longitudinal direction. Moreover, the signal of the servo motor 41 has strong anti-interference capability, stability, response speed and capability of adapting to sudden load change, so that the servo motor 41 can provide higher precision and better stability, and thus, the precision and accuracy of the point position movement of the lens 20 can be increased.

Specifically, with the drive mechanism 40 as described above, the lens 20 is longitudinally movable by a range of 54 mm. In the image acquisition process, the time consumed by the movement of adjacent image point positions can reach 30ms, and the repeated positioning precision can reach 0.003 mm.

Of course, in other embodiments, the drive mechanism 40 may be an air cylinder, a hydraulic cylinder, a synchronous pulley assembly, or the like. As long as the driving mechanism 40 can drive the imaging camera 10 and the lens 20 to perform the dot displacement in the longitudinal direction, the details will not be described here.

In one embodiment, referring to fig. 1 and 2, the image capturing device further includes a carrier plate 50. The carrier plate 50 is connected to the moving parts of the driving mechanism 40, and the imaging camera 10 and the lens 20 are disposed on the carrier plate 50. It is understood that the moving component of the driving mechanism 40 refers to a component capable of moving longitudinally in the driving mechanism 40, for example, in the driving mechanism 40 described above, the lead screw nut of the lead screw module 42 is the moving component. By providing the carrier board 50, the carrier board 50 can provide a larger mounting surface for mounting the imaging camera 10 and the lens 20.

Further, the carrier plate 50 is detachably connected to the moving part of the driving mechanism 40. Specifically, the carrier plate 50 is detachably mounted to the moving part of the driving mechanism 40 by screws or the like. Therefore, the carrier plates 50 can be conveniently detached and replaced, and the use is convenient and flexible. Of course, in other embodiments, the carrier plate 50 can also be fixed to the moving part of the driving mechanism 40, for example, the carrier plate 50 is welded to the moving part of the driving mechanism 40, which is not limited to this.

In one embodiment, referring to fig. 1 and 2, the image capturing device further comprises a stabilizing member 60 for fixing the lens 20. The fixing member 60 is disposed on the carrier 50 and corresponds to the lens 20. Through setting up the steady piece 60, the steady piece 60 can strengthen the fixed of camera lens 20, reduces vibrations in the motion process and to the image of imaging quality, guarantees the stability of moving in-process image acquisition.

Further, the stabilizing member 60 is detachably connected to the carrier plate 50. In particular, the steady 60 is mounted to the carrier plate 50 by means of screws or the like. Therefore, the installation position of the steady piece 60 can be conveniently adjusted according to the detection requirement, and the position of the lens 20 is further adjusted, so that the use is convenient and flexible.

In one embodiment, referring to fig. 1 and 2, the stabilizing member 60 is a securing band. Specifically, the fixed hoop comprises a first hoop block 61 and a second hoop block 62 for connecting the carrier plate 50, the first hoop block 61 has a semicircular groove, the side of the second hoop block 62 away from the carrier plate 50 correspondingly has a semicircular groove, and the first hoop block 61 and the second hoop block 62 are connected in a matching manner. When the lens 20 is mounted, the first hoop block 61 is opened or removed, one side of the lens 20 is attached to the groove wall of the semicircular groove of the second hoop block 62, and then the first hoop block 61 is closed or mounted, so that the other side of the lens 20 is attached to the groove wall of the semicircular groove of the first hoop block 61, and thus the lens 20 can be mounted on the fixing member 60, and the lens 20 can be fixed in a reinforced manner.

Specifically, referring to fig. 1 and 2, the first and second band blocks 61 and 62 may be coupled to each other in an openable and closable manner. For example, one end of the first hoop block 61 is hinged to one side of the second hoop block 62 with a semicircular groove, and the other end of the first hoop block 61 and the other side of the second hoop block 62 with a semicircular groove are provided with a pin stop hole or a threaded hole which are matched with each other. Alternatively, the first hoop block 61 and the second hoop block 62 are detachably connected. For example, one end of the first hoop block 61 and one side of the second hoop block 62 having the semicircular groove are provided with a first pin stopping hole or a first threaded hole which are matched with each other, and the other end of the first hoop block 61 and the other side of the second hoop block 62 having the semicircular groove are provided with a second pin stopping hole or a second threaded hole which are matched with each other.

Further, the groove walls of the semicircular grooves of the first hoop block 61 and the second hoop block 62 are provided with anti-slip pads. Specifically, the non-slip mat is a rubber mat, a silica gel mat and the like. Through setting up the slipmat, the slipmat can play skid-proof effect, increases the frictional force of camera lens 20 surface and first hoop piece 61 and second hoop piece 62 to further strengthen camera lens 20's fixed, reduce vibrations in the motion process and to imaging quality's image, guarantee effectively to remove the stability of in-process image acquisition.

In one embodiment, referring to fig. 3, fig. 3 illustrates an exploded view of the image capture device of fig. 1. The image capturing device further includes a first fixing member and a first connecting plate 70. The first connecting plate 70 is longitudinally provided with a first guide bar hole 71, the carrier plate 50 is correspondingly provided with a first fixing hole 51, and the first fixing member is arranged in the first guide bar hole 71 and the first fixing hole 51 in a penetrating manner. The image capturing device further includes a second fixing member and a first mounting plate 72, the first mounting plate 72 is disposed on one side of the first connecting plate 70 away from the carrier plate 50, a plurality of second fixing holes 721 disposed at intervals are disposed in the transverse direction and the longitudinal direction of the first mounting plate 72, and the second fixing member is disposed through the second fixing holes 721. Therefore, on one hand, the imaging camera 10 and the lens 20 can be coaxially arranged by matching with the stable piece 60, so that light can be conveniently focused on a photosensitive chip of the imaging camera 10 through the lens 20; on the other hand, the mounting position of the imaging camera 10 may be adjusted according to the detection requirement.

In one embodiment, referring to fig. 1 and 2, light source 30 includes a first annular light source 31 and a second annular light source 32. The first annular light source 31 is disposed on the carrier plate 50, the first annular light source 31 is close to the lens 20 and disposed coaxially with the lens 20, and the second annular light source 32 is disposed on a side of the first annular light source 31 away from the lens 20 and disposed coaxially with the first annular light source 31. When the product to be detected needs to be subjected to image acquisition, the product to be detected is placed between the first annular light source 31 and the second annular light source 32, light emitted by the first annular light source 31 irradiates the product to be detected from the top of the product to be detected, and after reflection, the light passes through the lens 20 and forms an image on the photosensitive chip of the imaging camera 10, so that the defects of the product to be detected, such as foreign matters, white spots, black spots and the like, can be clearly imaged. The light emitted from the second annular light source 32 irradiates the product to be measured from the bottom of the product to be measured upwards, and after being refracted, the light passes through the lens 20 and forms an image on the photosensitive chip of the imaging camera 10, so that defects such as scratches, demoulding and the like of the product to be measured can be clearly imaged. Therefore, the appearance defects of the product to be detected can be collected more comprehensively, and the comprehensiveness of appearance detection is ensured.

It should be noted that, in practical use, the driving mechanism 40 drives the imaging camera 10 and the lens 20 to move to different moving point positions according to the point position moving signal, so as to selectively turn on the first annular light source 31 and/or the second annular light source 32, so as to better collect the appearance defects of the product to be measured.

In one embodiment, the product to be tested is an aspheric plastic product or the like, and a 75 ° first annular light source 31 and a 75 ° second annular light source 32 are used. It should be noted that, the 75 ° first annular light source 31 and the 75 ° second annular light source 32 mean that an included angle between the light source 30 and the horizontal direction of the light emitting direction of the lamp bead in the light source 30 is 75 °. Lens 20 in other embodiments, the image capture device can also be used for appearance inspection of other types of products, such as aspheric glass products, spherical plastic products, and spherical glass products.

In one embodiment, referring to fig. 3 and 4, fig. 4 illustrates an exploded view of the image capture device of fig. 3 at a. The image capturing device further includes a first fastener and a second connecting plate 80. The second connecting plate 80 is longitudinally provided with a first strip-shaped hole 81, the carrier plate 50 is correspondingly provided with a first mounting hole 52, and the first fastener penetrates through the first strip-shaped hole 81 and the first mounting hole 52. The image acquisition device further comprises a second fastener, a third fastener and a second mounting plate 82 which is transversely arranged, the second mounting plate 82 is provided with a light hole 821, the first annular light source 31 is arranged at the bottom of the second mounting plate 82, and the first annular light source 31 corresponds to the light hole 821. The second mounting plate 82 is provided with a second bar-shaped hole 822 along the length direction thereof, the second connecting plate 80 is correspondingly provided with a second mounting hole, and a second fastener penetrates through the second bar-shaped hole 822 and the second mounting hole. Second mounting panel 82 is equipped with third bar-shaped hole 823 along its width direction, and first annular light source 31 corresponds and is equipped with third mounting hole 311, and third fastener wears to locate third bar-shaped hole 823 and third mounting hole 311. In this way, the position of the first annular light source 31 can be adjusted in three dimensions XYZ, according to the positions of the imaging camera 10 and the lens 20, until the first annular light source 31 is adjusted to a suitable lighting position.

It is understood that the length direction of the second mounting plate 82 refers to a side of the second mounting plate 82 connected to the second connecting plate 80, and the width direction of the second mounting plate 82 refers to a side of the second mounting plate 82 perpendicular to the second connecting plate 80.

It should be noted that, referring to fig. 3 and fig. 4, the second connecting plate 80 is moved to make the first mounting holes 52 of the carrier plate 50 correspond to different positions of the first strip-shaped holes 81 of the second connecting plate 80, so that the position of the first annular light source 31 in the Z-axis direction can be adjusted. The second mounting plate 82 is moved to enable the second mounting holes of the second connecting plate 80 to correspond to different positions of the second strip-shaped holes 822 of the second mounting plate 82, so that the position of the first annular light source 31 in the Y-axis direction can be adjusted. The first ring light source 31 is moved to make the third mounting holes 311 of the first ring light source 31 correspond to different positions of the third strip-shaped holes 823 of the second mounting plate 82, so that the position of the first ring light source 31 in the X-axis direction is adjusted.

Of course, in other embodiments, a strip-shaped hole may be disposed on the carrier plate 50, and a mounting hole may be disposed on the second connecting plate 80; or, the carrier plate 50 and the second connecting plate 80 are both provided with strip-shaped holes; alternatively, a plurality of mounting holes are provided at intervals in the height direction of the carrier plate 50, and a plurality of mounting holes are also provided at intervals in the height direction of the second connecting plate 80. In addition, the alternatives described above can also be employed in the second connecting plate 80, the second mounting plate 82, and the first annular light source 31.

In one embodiment, referring to fig. 3 and 5, fig. 5 illustrates an exploded view of the image capture device of fig. 3 at B. The image capturing device further includes a frame 90, a fourth fastening member, and a third connecting plate 92 disposed transversely. The frame 90 is longitudinally provided with a fourth hole 91, the lateral part of the third connecting plate 92 is correspondingly provided with a fourth mounting hole, and a fourth fastener penetrates through the fourth hole 91 and the fourth mounting hole. The image capturing device further includes a fifth fastening member, a sixth fastening member and a third mounting plate 93 transversely disposed on the third connecting plate 92, and the second annular light source 32 is disposed on the top of the third mounting plate 93. The third connecting plate 92 is provided with a fifth bar-shaped hole 921, the third mounting plate 93 is correspondingly provided with a fifth mounting hole 931, and a fifth fastener is arranged in the fifth bar-shaped hole 921 and the fifth mounting hole 931 in a penetrating manner. The third mounting plate 93 is provided with a sixth bar-shaped hole 932, the second annular light source 32 is correspondingly provided with a sixth mounting hole 321, and a sixth fastener is arranged in the sixth bar-shaped hole 932 and the sixth mounting hole 321 in a penetrating manner. In this way, the position of the second annular light source 32 can be adjusted in the three XYZ dimensions according to the positions of the imaging camera 10 and the lens 20 until the second annular light source 32 is adjusted to a suitable lighting position.

It should be noted that, referring to fig. 3 and 5, the third connecting plate 92 is moved to make the fourth mounting hole of the third connecting plate 92 correspond to different positions of the fourth hole 91 of the frame 90, so as to adjust the position of the second annular light source 32 in the Z-axis direction. The third mounting plate 93 is moved so that the fifth mounting holes 931 of the third mounting plate 93 correspond to different positions of the fifth strip holes 921 of the third connecting plate 92, and the position of the second annular light source 32 in the X-axis direction can be adjusted. The second annular light source 32 is moved so that the sixth mounting hole 321 of the second annular light source 32 corresponds to different positions of the sixth strip-shaped hole 932 of the third mounting plate 93, thereby realizing the adjustment of the position of the second annular light source 32 in the Y-axis direction.

Of course, in other embodiments, the rack 90 may be provided with a mounting hole, and the third connecting plate 92 may be provided with a strip-shaped hole; or, the frame 90 and the third connecting plate 92 are both provided with strip-shaped holes; alternatively, a plurality of mounting holes are provided at intervals in the height direction of the frame 90, and a plurality of mounting holes are also provided at intervals in the height direction of the third connecting plate 92. The above-described alternatives can be adopted for the third connecting plate 92, the third mounting plate 93, and the second annular light source 32.

In one embodiment, referring to fig. 1 and 2, the imaging camera 10 is fixedly attached to the top of the lens 20. In this way, instabilities during operation may be reduced.

In one embodiment, the lens 20 is a double telecentric lens 20. It should be noted that the double telecentric lens 20 has a small degree of telecentricity, a high resolution, and nearly zero distortion; the object space and the image space are arranged in a double telecentric mode, and the light projection rate is high; within the depth of field, there is no change in magnification. Therefore, the double telecentric lens 20 with low depth of field and high resolution is adopted, so that the imaging of small-size articles or small defects can be clear, and the accuracy of the appearance performance detection of the product to be detected is ensured.

In one embodiment, the imaging camera 10 is a CMOS global exposure camera. Therefore, the CMOS global exposure camera is adopted for image acquisition, and the image of the product to be detected can be obtained quickly and stably.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. An image acquisition device is characterized by comprising an imaging camera, a lens and a light source which are sequentially arranged from top to bottom, wherein the lens and the imaging camera are coaxially arranged, so that light rays passing through the lens can be focused on a photosensitive chip of the imaging camera; and

and the driving mechanism drives the imaging camera and the lens to longitudinally perform point location movement, so that the imaging camera performs image acquisition at the moving point location.

2. The image capturing device as claimed in claim 1, wherein the driving mechanism includes a servo motor and a lead screw module, the lead screw module is disposed on a power output shaft of the servo motor, and the imaging camera and the lens are connected to the lead screw module.

3. The image capturing device as claimed in claim 1, further comprising a carrier plate, wherein the carrier plate is connected to the moving part of the driving mechanism, and the imaging camera and the lens are disposed on the carrier plate.

4. The image capturing device as claimed in claim 3, further comprising a fixing member for fixing the lens, wherein the fixing member is disposed on the carrier plate and is disposed corresponding to the lens.

5. The image capturing device as claimed in claim 4, wherein the fixing member includes a first hoop block and a second hoop block connected to the carrier, the first hoop block has a semicircular groove, the second hoop block has a corresponding semicircular groove on a side portion away from the carrier, and the first hoop block and the second hoop block are connected in a closed manner.

6. The image capturing device as claimed in claim 3, wherein the light source includes a first annular light source and a second annular light source, the first annular light source is disposed on the carrier plate, and the first annular light source is disposed close to the lens and coaxial with the lens; the second annular light source is arranged on one side, far away from the lens, of the first annular light source and is coaxially arranged with the first annular light source.

7. The image capturing device as claimed in claim 6, wherein the image capturing device further comprises a first fastener and a second connecting plate, the second connecting plate is longitudinally provided with a first strip-shaped hole, the carrier plate is correspondingly provided with a first mounting hole, and the first fastener is inserted into the first strip-shaped hole and the first mounting hole;

the image acquisition device further comprises a second fastener, a third fastener and a second mounting plate which is transversely arranged, the second mounting plate is provided with a light hole, the first annular light source is arranged at the bottom of the second mounting plate, and the first annular light source corresponds to the light hole; the second mounting plate is provided with a second strip-shaped hole along the length direction, the second connecting plate is correspondingly provided with a second mounting hole, and the second fastener penetrates through the second strip-shaped hole and the second mounting hole;

the second mounting panel is equipped with third bar hole along its width direction, first annular light source correspondence is equipped with the third mounting hole, the third fastener is worn to locate third bar hole and third mounting hole.

8. The image capturing device as claimed in claim 6, further comprising a frame, a fourth fastening member and a third connecting plate disposed transversely, wherein the frame is longitudinally provided with a fourth hole, a side of the third connecting plate is correspondingly provided with a fourth mounting hole, and the fourth fastening member is inserted into the fourth hole and the fourth mounting hole;

the image acquisition device further comprises a fifth fastener, a sixth fastener and a third mounting plate transversely arranged on the third connecting plate, the second annular light source is arranged at the top of the third mounting plate, the third connecting plate is provided with a fifth strip-shaped hole, the third mounting plate is correspondingly provided with a fifth mounting hole, and the fifth fastener penetrates through the fifth strip-shaped hole and the fifth mounting hole;

the third mounting panel is equipped with sixth bar hole, second annular light source correspondence is equipped with the sixth mounting hole, the sixth fastener is worn to establish sixth bar hole and sixth mounting hole.

9. The image capturing device of any one of claims 1 to 8, wherein the lens is a double telecentric lens.

10. The image capturing device of any one of claims 1 to 8, wherein the imaging camera is a CMOS global exposure camera.

Images