Visual inspection image acquisition device for lens module

Abstract

The invention discloses a visual inspection image acquisition device for a lens module, and relates to the technical field of visual inspection systems. The lens module visual inspection image acquisition device comprises a beam splitter prism, a condensation irradiation module, an annular irradiation module and a camera module, wherein the camera module is used for photographing the lens module; the annular irradiation module is arranged between the camera module and the lens module, and the annular irradiation module generates irradiation light; the beam splitter prism is arranged between the camera module and the annular irradiation module; the condensation irradiation module generates a focusing light beam; the focused light beam is emitted to the lens module after passing through the beam splitter prism, the irradiation light is emitted to the lens module, the lens module reflects the irradiation light and the focused light beam, and the reflected irradiation light and focused light beam are emitted to the camera module after passing through the beam splitter prism. According to the lens module visual inspection image acquisition device provided by the invention, visual inspection image acquisition of the lens module can be completed at one time, and the detection efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of visual inspection systems, and in particular to a lens module visual inspection image acquisition device. Background Art

[0002] At present, customized visual inspection systems are often used to complete the measurement and calibration of aperture size. Existing visual inspection systems use coaxial light sources and ring light sources alternately to meet the lighting needs of different areas. However, this visual inspection system still finds it difficult to fully capture the key features of the sample in a single inspection, and requires multiple adjustments to the lighting settings, which reduces the inspection efficiency. Summary of the invention

[0003] In view of this, the present application provides a lens module visual detection image acquisition device, which aims to solve one of the technical problems in the prior art.

[0004] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0005] In a first aspect, an embodiment of the present application provides a lens module visual detection image acquisition device, comprising:

[0006] A camera module, wherein the camera module is used to take pictures of the lens module;

[0007] an annular illumination module, the annular illumination module is arranged between the camera module and the lens module, the annular illumination module generates illumination light, and the illumination light has at least two colors;

[0008] A beam splitter prism, the beam splitter prism is arranged between the camera module and the annular illumination module;

[0009] A focusing illumination module, which is disposed on one side of the beam splitter prism and generates a focused light beam;

[0010] Among them, the focused light beam passes through the dichroic prism and is emitted to the lens module, the irradiation light is emitted to the lens module, the lens module reflects the irradiation light and the focused light beam, and the reflected irradiation light and the focused light beam pass through the dichroic prism and are emitted to the camera module, and the color of the focused light beam is different from the color of the irradiation light.

[0011] In one embodiment of the first aspect, the spotlight illumination module comprises:

[0012] light source;

[0013] A focusing lens group, after the light emitted by the light source passes through the focusing lens group, the focused light beam is output from the light output side of the focusing lens group.

[0014] In one embodiment of the first aspect, the focusing lens assembly comprises:

[0015] A cylinder body, wherein a telescopic member is arranged inside the cylinder body;

[0016] The lens group is arranged in the barrel, and the telescopic member drives the lens group to move along the length direction of the barrel.

[0017] In one embodiment of the first aspect, the annular illumination module includes at least a first annular light source and a second annular light source that are coaxially arranged, the diameter of the second annular light source is larger than the first annular light source, and the color of the illumination light of the second annular light source is different from the color of the illumination light of the first annular light source.

[0018] In one embodiment of the first aspect, an angle α formed between the light of any annular light source and the axis of the current annular light source satisfies 40°≤α≤60°.

[0019] In one embodiment of the first aspect, the wavelength range of the focused light beam and the illumination light is between 100-1400 nm.

[0020] In one embodiment of the first aspect, the color of the focused light beam is green, the color of the irradiated light of the first annular light source is red, and the color of the irradiated light of the second annular light source is blue;

[0021] The light of any annular light source forms an angle of 50° with the axis of the current annular light source.

[0022] In one of the embodiments of the first aspect, an air cooling device is further included, and the air cooling device is used to cool and dissipate heat for the annular irradiation module.

[0023] Compared with the prior art, the beneficial effects of the present application are as follows: the present application proposes a lens module visual detection image acquisition device, comprising a beam splitter prism, a focusing illumination module, an annular illumination module and a camera module, wherein the camera module is used to take pictures of the lens module; the annular illumination module is arranged between the camera module and the lens module, and the annular illumination module generates illumination light, and the illumination light has at least two colors; the beam splitter prism is arranged between the camera module and the annular illumination module; the focusing illumination module is arranged on one side of the beam splitter module, and the focusing illumination module generates a focused light beam;

[0024] Among them, the focused light beam is emitted to the lens module after passing through the dichroic prism, the irradiation light is emitted to the lens module, the lens module reflects the irradiation light and the focused light beam, and the reflected irradiation light and focused light beam are emitted to the camera module after passing through the dichroic prism. By utilizing the focused light beam generated by the focusing irradiation module and the irradiation light generated by the annular irradiation module to simultaneously irradiate the lens module, there is no need to alternately use the focusing irradiation module and the annular irradiation module to collect images in different areas, which reduces the number of times of collecting images, can complete the visual inspection image collection of the lens module at one time, and improves the efficiency of inspection.

[0025] The color of the focused light beam is different from the color of the irradiated light. The lens module makes the focused light beam illuminate the light hole of the lens module, and the irradiated light illuminates the aperture of the lens module. The colors of the focused light beam and the irradiated light are different, which improves the contrast between the light hole and the aperture in the collected image, facilitates the subsequent identification and calculation of the light hole area and the active area of ​​the aperture, thereby improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of a lens module visual detection image acquisition device in some embodiments of the present application is shown;

[0028] Figure 2 A schematic diagram of the structure of the lens module in some embodiments of the present application is shown.

[0029] Main component symbol description: 100-lens module visual detection image acquisition device; 110-beam splitter prism; 120-camera module; L1-focusing light beam; L2-illumination light; 130-focusing illumination module; 131-light source; 132-focusing lens group; 1321-lens group; 1322-barrel; 140-annular illumination module; 141-first annular light source; 142-second annular light source;

[0030] 200-lens module; 210-lens; 220-aperture; 230-rotor; 240-lens barrel. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] The lens aperture controls the amount of light entering the lens and determines the image's depth of field, clarity and other parameters. Therefore, accurately detecting and adjusting the aperture size is essential to ensure that the lens module can provide stable and high-quality images under various lighting conditions.

[0037] Existing lighting solutions make it difficult to fully capture the key features of a sample in a single inspection and require multiple adjustments and lighting settings, which increases the complexity and time cost of the inspection process and reduces the inspection efficiency of the lens module.

[0038] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a lens module visual detection image acquisition device 100, which is mainly used to acquire visual detection images of a lens module.

[0039] The lens module visual detection image acquisition device 100 includes a beam splitter prism 110 , a focusing illumination module 130 , an annular illumination module 140 and a camera module 120 .

[0040] In this embodiment, if Figure 1 As shown, the camera module 120 is used to take a photo of the lens module 200, and the aperture size of the lens module 200 is measured by analyzing the image in the photo.

[0041] The annular illumination module 140 is disposed between the camera module 120 and the lens module 200 .

[0042] The dichroic prism 110 is arranged between the camera module 120 and the annular illumination module 140. At the same time, the focusing illumination module 130 is arranged on one side of the dichroic prism 110, so that the focusing illumination module 130, the annular illumination module 140 and the camera module 120 are respectively arranged on the surrounding side of the dichroic prism 110, thereby reducing the volume of the lens module visual detection image acquisition device 100.

[0043] The annular illumination module 140 generates illumination light L2, which has at least two colors. The condenser illumination module 130 generates a focused light beam L1, which passes through the beam splitter prism 110 and then projects toward the lens module 200. The illumination light L2 projects toward the lens module 200, and the lens module 200 reflects the illumination light L2 and the focused light beam L1. The reflected illumination light L2 and the focused light beam L1 pass through the beam splitter prism 110 and then project toward the camera module 120.

[0044] The focused light beam L1 includes a first light beam directed toward the beam splitter prism 110 and a second light beam emitted from the beam splitter prism 110 .

[0045] By utilizing the second segment of the focused light beam L1 generated by the focusing illumination module 130 and the illumination light L2 generated by the annular illumination module 140 to simultaneously illuminate the lens module 200, there is no need to alternately use the focusing illumination module 130 and the annular illumination module 140 to capture images in different areas, thereby reducing the number of times images are captured, and visual inspection image capture of the lens module 200 can be completed at one time, thereby improving the efficiency of detection.

[0046] It should be noted that if Figure 1 As shown, a beam splitter 110 with different splitting ratios can be selected to achieve different proportions between reflected light and transmitted light. In this embodiment, a beam splitter 110 with the same ratio of reflected light to transmitted light is selected. By selecting a beam splitter 110 with the same ratio of reflected light to transmitted light, when the camera module 120 is illuminated by the annular illumination module 140, most of the illumination light L2 can be reflected, reducing the possibility of overexposure of the camera module 120. A beam splitter 110 with other splitting ratios can also be selected to achieve different lighting conditions.

[0047] For example, the ratio between reflected light and transmitted light is 3: 7. Due to the low reflection ratio, only a small portion of the light reflected by the lens module will be reflected to the focusing illumination module 130, thereby improving the safety of the focusing illumination module 130.

[0048] In addition, the focusing illumination module 130, the annular illumination module 140 and the camera module 120 are respectively arranged on the peripheral side of the beam splitter prism 110, shortening the optical path of the focusing light beam L1 and the illumination light L2, reducing the light intensity loss of the focusing light beam L1 and the illumination light L2, and improving the imaging efficiency and imaging quality of the image.

[0049] like Figure 1 As shown, the axis of the first segment of the focused light beam L1 generated by the focusing irradiation module 130 has an angle of 45° with the dichroic film in the dichroic prism 110 , so that the horizontally incident focused light beam L1 is emitted from the dichroic prism 110 in a vertical direction.

[0050] The annular illumination module 140 is disposed below the beam splitter prism 110 . The focused light beam L1 is reflected by the beam splitter prism 110 , passes through the annular illumination module 140 , and is emitted toward the lens module 200 .

[0051] The spot of the focused beam L1 is circular, and the focused beam L1 irradiates the lens 210 of the lens module 200, and the irradiation light L2 irradiates the lens barrel 240, the aperture 220 and the rotor 230 of the lens module 200. The contrast of different areas of the lens module is improved, and the zoned lighting of the lens module 200 is realized.

[0052] It should be noted that the irradiation light L2 can illuminate the rotor 230, the lens barrel 240 and the aperture 220 at the same time. Figure 2 As shown, the aperture 220 is placed horizontally and the lens barrel 240 is tilted below the aperture 220. As the aperture 220 expands, the irradiation light L2 can irradiate the rotor 230, the lens barrel 240 and the aperture 220 at the same time; as the aperture 220 shrinks, the irradiation light L2 can irradiate the aperture 220 and the rotor 230.

[0053] When the irradiation light L2 irradiates the lens barrel 240 and the aperture 220 at the same time, diffuse reflection light is generated on the surface of the aperture 220, and the lens barrel 240 generates reflected light at a certain angle, and the intensity of the diffuse reflection light generated by the aperture 220 is lower than the intensity of the reflected light from the lens barrel 240. In the camera image, the inner edge of the aperture 220 has a great contrast, making the image contrast high, and it is convenient to identify the lens barrel 240 and the aperture 220.

[0054] By utilizing the focused light beam L1 generated by the focusing illumination module 130 and the illumination light L2 generated by the annular illumination module 140 to simultaneously illuminate the lens module 200, there is no need to alternately use the focusing illumination module 130 and the annular illumination module 140 to capture images in different areas, thereby reducing the number of image capture times, being able to complete visual inspection image capture of the lens module 200 at one time, and improving the efficiency of detection.

[0055] The focused light beam L1 and the irradiated light L2 have different colors, which improves the contrast of the lens 210 and the aperture 220 in the captured image, facilitates the subsequent identification and calculation of the area of ​​the lens 210 and the active area of ​​the aperture 220, and thus improves the detection accuracy.

[0056] like Figure 1 As shown, the camera module 120 is disposed above the beam splitter prism 110 , and the camera module 120 is directly opposite to the lens module 200 . The camera module 120 is used to collect the image of the lens module 200 illuminated by the focusing light beam L1 and the irradiation light L2 .

[0057] Precise control of the spot diameter of the focused light beam L1 is crucial. In this example, a black and white camera is used in the camera module 120. The focused light beam L1 irradiates the lens 210 of the lens module 200. After the light is reflected by the lens of the lens module 200, it appears as a white light spot in the image of the camera module 120. Under the illumination of the annular illumination module 140, the aperture 220 and the rotor 230 of the lens module 200 appear black and white, respectively, in the image of the camera module 120.

[0058] When the spot area of ​​the focused beam L1 is too large, it will affect the imaging quality of the metal rotor 230 that controls the aperture 220; when the spot area of ​​the focused beam L1 is too small, the spot will affect the inner imaging effect of the aperture 220, thereby affecting the calculation of the active area of ​​the aperture 220.

[0059] To address the above problem, in some embodiments, the focusing illumination module 130 includes a light source 131 and a focusing lens group 132 to achieve local high-precision illumination.

[0060] The focusing lens group 132 is disposed between the light source 131 and the beam splitter prism 110. After the light emitted from the light source 131 passes through the focusing lens group 132, a focused light beam L1 is outputted from the light output side of the focusing lens group 132.

[0061] For example, Figure 1 As shown, the light source 131 is disposed on the left side of the beam splitter prism 110. The light beam emitted by the light source 131 is converged by the focusing lens group 132 and then emitted to the beam splitter prism 110. The beam splitter prism 110 reflects the focused light beam L1 to the lens 210 of the lens module 200, so that the diameter of the focused light beam L1 passing through the lens 210 is the same as the diameter of the lens 210.

[0062] In some embodiments, the focusing lens group 132 includes a lens group 1321 and a barrel 1322 .

[0063] In this embodiment, the light source 131 is a point light source.

[0064] The light source 131 of the spotlight irradiation module 130 has only one color.

[0065] A telescopic part is provided in the barrel 1322, and the lens group 1321 is provided in the barrel 1322. The telescopic part drives the lens group 1321 to move along the length direction of the barrel 1322, so that the lens group 1321 moves toward or away from the light source 131, thereby adjusting the spot size of the focusing light beam L1, so that the lens module visual detection image acquisition device 100 can be applicable to more types of lens modules, thereby enhancing practicality.

[0066] The lens module is assembled from multiple parts. The types of parts and materials of different types of lens modules are different, and their reflectivity and optical properties are different. The existing lighting solutions are difficult to adapt to the needs of different samples and lack versatility.

[0067] In addition, increasing the contrast by simply increasing the brightness of the light source to increase the intensity of reflected light will cause the lens module to heat up rapidly, causing the resin lens to deform.

[0068] Therefore, in view of the differences in angles and materials of different structures of the samples to be tested, a multi-color light source is used to improve the contrast between the parts in the image, which is beneficial to improving the detection efficiency.

[0069] To address the above problem, in some embodiments, the annular illumination module 140 includes at least one annular light source, and the light beam generated by each annular light source is coaxially arranged with the focused light beam L1 reflected by the beam splitter prism 110 .

[0070] The diameters of the light beams generated by the annular light sources increase successively and are combined to form the illumination light L2.

[0071] By using at least one annular light source, annular dark field illumination is achieved and the illumination uniformity of the surface of the lens module to be tested is improved.

[0072] The number of ring lights can be set as required.

[0073] In some embodiments, the annular illumination module 140 includes a first annular light source 141 , and the first annular light source 141 illuminates the lens barrel 240 , the aperture 220 , and the rotor 230 of the lens module 200 .

[0074] Furthermore, the color of the light beam of the first annular light source 141 is different from the color of the focused light beam L1 .

[0075] It can be understood that the material properties of the aperture 220 of the lens module 200 have a higher reflectivity for red light, so the color of the irradiation light L2 can be set to red, and the color of the focused light beam L1 can be set to white, green or blue.

[0076] In some embodiments, the annular illumination module 140 includes at least a first annular light source 141 and a second annular light source 142 which are coaxially arranged. The first annular light source 141 illuminates the lens barrel 240, the aperture 220 and the rotor 230 of the lens module 200, and the second annular light source 142 illuminates the lens barrel 240, the aperture 220 and the rotor 230 of the lens module 200.

[0077] The diameter of the second annular light source 142 is greater than that of the first annular light source 141 , and the color of the light beam of the first annular light source 141 is different from the color of the focused light beam L1 .

[0078] It can be understood that the material properties of the aperture 220 of the lens module 200 have a higher reflectivity for red light, and the rotor 230 is made of metal material, which has a higher reflectivity for blue light. Figure 2 As shown, the rotor 230 of the lens module 200 is disposed around the outside of the aperture 220, so the color of the second annular light source 142 can be set to blue, and the color of the first annular light source 141 can be set to red.

[0079] The color of the focused light beam L1 is white light or green light, so that the colors of the light beams irradiating the lens 210, the aperture 220 and the rotor 230 are different, thereby improving the contrast of each part in the image.

[0080] like Figure 2 As shown, the lens 210 and the aperture 220 are adjacent to each other in the lens module 200, so that the colors of the focused light beam L1 and the light beam irradiating the aperture 220 are different, thereby improving the contrast between the lens 210 and the aperture 220 in the image.

[0081] like Figure 2As shown, the lens 210 and the rotor 230 are separated by the aperture 220 in the lens module 200, and the colors of the focused light beam L1 and the light beam irradiating the rotor 230 are the same, but the light intensities of the two beams are different, thereby improving the contrast of the lens 210 and the rotor 230 in the image.

[0082] Exemplarily, the first annular light source 141 uses three layers of compactly arranged annular LED light strips, and the second annular light source 142 uses one layer of annular LED light strips.

[0083] The light color of each layer of the LED light strip of the first annular light source 141 is the same, which is blue. The light color of the LED light strip of the second annular light source 142 is red.

[0084] like Figure 1 As shown, in the vertical direction, the first ring light source 141 is located above the second ring light source 142, and there is no spacing between the layers of LED light strips of the first ring light source 141, which are tightly combined, and there is no spacing between the bottommost layer of LED light strips of the first ring light source 141 and the LED light strips of the second ring light source 142 to reduce stray light.

[0085] Furthermore, the diameters of all the LED light strips gradually increase in the direction away from the beam splitter prism.

[0086] The number of layers of the LED light strips of the first annular light source 141 and the second annular light source 142 can be selected according to the actual size of the lens module. When the size of the aperture 220 in the lens module becomes larger or smaller, the number of layers of the LED light strips of the first annular light source 141 can be increased or decreased to make the light beam of the first annular light source 141 thicker or thinner. The same applies to the second annular light source 142, and no further details will be given.

[0087] In some embodiments, the light emitting direction of the first annular light source 141 is parallel to the light emitting direction of the second annular light source 142. The first annular light source 141 and the second annular light source 142 illuminate the surface of the lens module to be tested at a certain tilt angle, and most of the reflections occurring on the surface of the lens module to be tested are emitted from the other side, thereby reducing the light directly reflected from the surface of the lens module 200 to be tested from entering the imaging optical path of the camera module 120, thereby improving the imaging contrast.

[0088] In some embodiments, an angle α is formed between the light of any annular light source and the axis of the current annular light source, and satisfies 40°≤α≤60°.

[0089] In this embodiment, the angle α is 50°, and the light of the first annular light source 141 forms an angle of 50° with the axis of the first annular light source 141, and the light of the second annular light source 142 forms an angle of 50° with the axis of the second annular light source 142. In other embodiments, the angle α is 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, etc., which are not limited to the example angles.

[0090] In some embodiments, the wavelength range of the focused light beam L1 and the irradiation light L2 is between 100-1400 nm. For example, the focused light beam L1 and the irradiation light L2 are 100 nm, 280 nm, 320 nm, 435 nm, 450 nm, 492 nm, 577 nm, 597 nm, 622 nm, 760 nm, 1050 nm, 1240 nm, 1400 nm, etc.

[0091] In some embodiments, the color of the focused light beam L1 is any one of white, green, blue and red; the color of the illumination light L2 is at least one of white, green, blue and red.

[0092] In this embodiment, the color of the focused light beam L1 is green, and the color of the irradiation light L2 is red and blue. In other embodiments, the color of the focused light beam L1 is white, and the color of the irradiation light L2 is red or blue; the color of the focused light beam L1 is green, and the color of the irradiation light L2 is red or blue; the color of the focused light beam L1 is green, and the color of the irradiation light L2 is white or blue; the color of the focused light beam L1 is green, and the color of the irradiation light L2 is red or white, etc.

[0093] In some embodiments, the lens module visual detection image acquisition device 100 also includes an air cooling device (not shown), which is used to cool and dissipate heat from the annular illumination module 140, reduce heat radiation to the lens module 200, and reduce damage.

[0094] The lens module visual inspection image acquisition device 100 of the present application can improve the contrast of the lens 210, aperture 220 and rotor 230 in the image by accurately controlling the driving current of the green point light source and the red and blue ring light sources respectively according to the characteristics of different structural materials, thereby improving the image quality and processing efficiency, especially in calculating the active area of ​​the aperture 220.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0096] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A lens module visual detection image acquisition device, characterized in that: include: A camera module, wherein the camera module is used to take pictures of the lens module; an annular illumination module, the annular illumination module is arranged between the camera module and the lens module, the annular illumination module generates illumination light, and the illumination light has at least two colors; A beam splitter prism, the beam splitter prism is arranged between the camera module and the annular illumination module; A focusing illumination module, which is disposed on one side of the beam splitter prism and generates a focused light beam; Among them, the focused light beam passes through the dichroic prism and is emitted to the lens module, the irradiation light is emitted to the lens module, the lens module reflects the irradiation light and the focused light beam, and the reflected irradiation light and the focused light beam pass through the dichroic prism and are emitted to the camera module, and the color of the focused light beam is different from the color of the irradiation light.

2. The lens module visual detection image acquisition device according to claim 1, characterized in that: The spotlight irradiation module comprises: light source; A focusing lens group, after the light emitted by the light source passes through the focusing lens group, the focused light beam is output from the light output side of the focusing lens group.

3. The lens module visual detection image acquisition device according to claim 2, characterized in that: The focusing lens group comprises: A cylinder body, wherein a telescopic member is arranged inside the cylinder body; The lens group is arranged in the barrel, and the telescopic member drives the lens group to move along the length direction of the barrel.

4. The lens module visual detection image acquisition device according to claim 1, characterized in that: The annular illumination module at least comprises a first annular light source and a second annular light source which are coaxially arranged. The diameter of the second annular light source is larger than that of the first annular light source. The color of the illumination light of the second annular light source is different from that of the first annular light source.

5. The lens module visual detection image acquisition device according to claim 4, characterized in that: The angle α formed between the light of any annular light source and the axis of the current annular light source satisfies 40°≤α≤60°.

6. The lens module visual detection image acquisition device according to claim 5, characterized in that: The wavelengths of the focused light beam and the irradiation light are in the range of 100-1400 nm.

7. The lens module visual detection image acquisition device according to claim 6, characterized in that: The color of the focused light beam is green, the color of the irradiated light of the first annular light source is red, and the color of the irradiated light of the second annular light source is blue; The light of any annular light source forms an angle of 50° with the axis of the current annular light source.

8. The lens module visual detection image acquisition device according to any one of claims 1 to 7, characterized in that: It also includes an air cooling device, which is used to cool and dissipate heat for the annular irradiation module.

Images