A multi-modal visual surface light source device
By designing a multimodal visual surface light source device in a CCD image acquisition system, and utilizing a combination of multiple ring lamp groups and a focusing sleeve, the problem of pixel charge overflow caused by the light source device was solved, achieving a clearer and more sensitive imaging effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GOOD VISION PRECISION INSTR CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-21
Smart Images
Figure CN224534156U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of light source and illumination technology, and in particular to a multimodal visual surface light source device. Background Technology
[0002] A CCD image acquisition system refers to the process of using a charge-coupled device (CCD) image sensor as the core photosensitive element to convert incident optical image information into a processable electrical signal, thereby completing the digital recording of the image. Since its inception, this technology has been widely used in many fields, such as scientific research and detection (e.g., astronomical observation, microscopic imaging), industrial inspection (e.g., precision measurement, defect identification), medical imaging (e.g., X-ray imaging, endoscopy), security monitoring, and professional photography, due to its high sensitivity, low noise, excellent imaging uniformity, and wide dynamic range. It has become an important cornerstone of modern optoelectronic imaging technology.
[0003] For existing CCD geometric dimension measurement technology, the first priority is to solve the problem of high-quality visual imaging, such as acquiring image features with clear edge contours and clean, crisp black-and-white transitions at the edges. To achieve this image effect, in addition to the high quality of the optical objective lens and the imaging CCD itself, the light source device of the CCD image acquisition system also needs to have good illumination capabilities. For example, under flat illumination from the light source device, CCD pixels are prone to charge overflow (halo phenomenon), which affects the imaging quality of adjacent pixels or even the entire row or column, restricts the dynamic range, and affects the final imaging effect. Therefore, improvements are urgently needed. Utility Model Content
[0004] The main purpose of this invention is to propose a multimodal visual surface light source device to solve the problem of the light source device affecting the imaging quality of CCD image acquisition systems in related technologies.
[0005] To achieve the above objectives, this utility model proposes a multimodal visual surface light source device, which includes: A protective housing having a mounting groove, wherein a first light-transmitting hole is provided through the bottom of the mounting groove; A welding plate is installed at the bottom of the mounting groove. The welding plate has a second light-transmitting hole corresponding to the first light-transmitting hole. The welding plate has multiple annular partitions arranged coaxially with the second light-transmitting hole from the inside out. Multiple sets of ring lights, each set of ring lights being composed of multiple light-emitting diodes, and the multiple sets of ring lights being installed on the corresponding ring sections; A focusing sleeve, which is cylindrical in shape, is mounted on the welding plate. The focusing sleeve isolates the innermost group of ring lights from the other groups of ring lights, and at least part of the innermost group of ring lights is exposed inside the focusing sleeve.
[0006] In some embodiments, the welding plate has six annular partitions, which are, from the inside out: an annular incident light zone, an inner three-ring angled light zone, a fourth annular angled light zone, a fifth annular angled light zone, and a sixth annular angled light zone. The inner three-ring angled light zone has a first annular light group, a second annular light group, and a third annular light group arranged coaxially from the inside out. The extension lines of the illumination directions of each of the light-emitting diodes in the annular light groups all intersect at the same point.
[0007] In some embodiments, the axis of the second light-transmitting hole is the center of the optical axis, the illumination direction of each light-emitting diode in the annular incident light area forms an angle of 11° with the center of the optical axis, the illumination direction of each light-emitting diode in the first annular light group forms an angle of 15° with the center of the optical axis, the illumination direction of each light-emitting diode in the second annular light group forms an angle of 19.5° with the center of the optical axis, the illumination direction of each light-emitting diode in the third annular light group forms an angle of 23.5° with the center of the optical axis, the illumination direction of each light-emitting diode in the fourth annular angled light area forms an angle of 29° with the center of the optical axis, the illumination direction of each light-emitting diode in the fifth annular angled light area forms an angle of 33° with the center of the optical axis, and the illumination direction of each light-emitting diode in the sixth annular angled light area forms an angle of 36.5° with the center of the optical axis.
[0008] In some embodiments, the focusing sleeve is configured in a conical sleeve shape with a wide end and a narrow end, the wide end being connected to the welding plate, and the narrow end covering each of the light-emitting diodes located inside the focusing sleeve.
[0009] In some embodiments, the narrow end covers half of each of the light-emitting diodes located within the focusing sleeve.
[0010] In some embodiments, the inner peripheral wall of the light-concentrating sleeve is provided with a plurality of contoured recesses, each contoured recess being adapted to the outer contour of each light-emitting diode, and half of the outer side wall of each light-emitting diode being located within the corresponding contoured recess.
[0011] In some embodiments, the welding plate is provided with two welding holes corresponding to the positions of each of the light-emitting diodes, and the positive and negative terminals of each light-emitting diode are inserted into the corresponding welding holes. An annular flange is provided on the periphery of the wide end, and a through hole is provided on the annular flange corresponding to the position of each of the welding holes.
[0012] In some embodiments, each of the ring-shaped light groups within the annular incident light area, the inner three-ring angled light area, the fourth ring angled light area, the fifth ring angled light area, and the sixth ring angled light area is powered separately.
[0013] In some embodiments, the inner three-ring angular light region has eight equally divided sector regions spaced apart along its central axis, with each sector region having its own light-emitting diodes powered separately, and each sector region including six groups of first light-emitting diodes connected in parallel, each first light-emitting diode group including three light-emitting diodes connected in series.
[0014] In some embodiments, the fourth ring angle light region has eight equally divided sector regions spaced apart along its central axis, with each sector region having its own light-emitting diodes powered separately, and each sector region including two groups of second light-emitting diodes connected in parallel, each second group of light-emitting diodes including three light-emitting diodes connected in series. The fifth ring angle light region has eight equally divided sector areas separated along its central axis. The light-emitting diodes in each sector area are powered separately. Each sector area includes two groups of third light-emitting diodes connected in parallel. Each group of third light-emitting diodes includes three light-emitting diodes connected in series. The sixth ring angle light region has eight equally divided sector areas separated along its central axis. The light-emitting diodes in each sector area are powered separately. Each sector area includes two groups of third light-emitting diodes connected in parallel. Each group of third light-emitting diodes includes three light-emitting diodes connected in series.
[0015] The beneficial effects of this utility model's technical solution are as follows: This utility model's multimodal vision surface light source device features multiple ring-shaped light groups arranged from the inside out on a soldered plate. Each ring-shaped light group can independently illuminate itself after being powered on, adapting to the imaging lighting needs of objects of different sizes and contours. Furthermore, the included focusing sleeve isolates the innermost ring-shaped light group from the other ring-shaped light groups, filtering out stray light from them. The innermost ring-shaped light group emits scattered light towards the object during illumination. Compared to the traditional method of emitting parallel light, the scattered light makes the image clearer. Combined with the fact that each ring-shaped light group can independently illuminate itself after being powered on, and that the illumination is achieved through single or multiple ring-shaped light groups, the contrast between various elements in the image becomes more obvious, improving the sensitivity of image changes during focusing and thus enhancing image quality. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the multimodal vision surface light source device according to an embodiment of the present invention; Figure 2This is an exploded view of the structure of the multimodal vision surface light source device according to an embodiment of the present invention; Figure 3 This is a structural cross-sectional view of the multimodal vision surface light source device according to an embodiment of the present invention; Figure 4 for Figure 1 Schematic diagram of the structure of the welding plate; Figure 5 for Figure 1 Schematic diagram of the structure of the central focusing sleeve; Figure 6 This is a circuit diagram of a multimodal visual surface light source device according to an embodiment of the present invention.
[0017] Explanation of icon numbers: 100. Protective housing; 110. Mounting groove; 110a. First light-transmitting hole; 200. Welding plate; 200a. Second light-transmitting hole; 210. Annular incident light area; 220. Inner three-ring angled light area; 221. First ring light group; 222. Second ring light group; 223. Third ring light group; 230. Fourth ring angled light area; 240. Fifth ring angled light area; 250. Sixth ring angled light area; 260. Welding insertion hole; 300. Focusing sleeve; 310. Wide end; 320. Narrow end; 330. Contour recess; 340. Annular flange; 341. Through hole; 400. Optical axis center; 500. Focusing surface. Detailed Implementation
[0018] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model. In addition, the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.
[0019] To address the technical deficiencies in related technologies, this utility model provides a multimodal visual surface light source device. Please refer to [link / reference]. Figures 1 to 5 The multimodal vision surface light source device includes: a protective housing, a welding plate, multiple sets of ring lamps, and a focusing sleeve. The protective housing serves as the load-bearing structure for the various components of the multimodal vision surface light source device. The protective housing can be made of plastic or metal, and no particular restriction is imposed here. The protective housing has a mounting groove, and a first light-transmitting hole is provided through the bottom of the mounting groove. The first light-transmitting hole is the channel for the camera of the CCD image acquisition system to capture images.
[0020] Furthermore, the welding plate is installed at the bottom of the mounting groove. The welding plate can be installed at the bottom of the mounting groove by snap-fit, screw fastening or other installation methods. In addition, the welding plate is provided with a second light-transmitting hole corresponding to the first light-transmitting hole. Similarly, the second light-transmitting hole is also the channel for the camera of the CCD image acquisition system to capture images.
[0021] In addition, the welding plate has multiple annular partitions arranged coaxially with the second light-transmitting hole from the inside out; each annular light group is composed of multiple light-emitting diodes, and the multiple annular light groups are installed on the corresponding annular partitions respectively; the multiple annular light groups can be powered separately as needed, and emit light through one or more annular light groups, so that users can control the lighting of each annular light group as needed, thereby adapting to the lighting requirements of test objects of different sizes and contours.
[0022] Furthermore, the focusing sleeve has a cylindrical structure and is mounted on a welding plate. The focusing sleeve isolates the innermost set of ring lights from the other sets, with at least a portion of the innermost set of ring lights exposed inside the focusing sleeve. In this way, the focusing sleeve filters out stray light from the other sets of ring lights, and the innermost set of ring lights emits diffused light towards the object under test when illuminating. Compared to the traditional method of emitting parallel light, the diffused light makes the image clearer.
[0023] The above-described technical solution, the multimodal vision surface light source device of this utility model, sets multiple ring light groups from the inside out on the welding plate, and each ring light group can be powered on independently after being powered on, which can adapt to the imaging lighting needs of objects of different sizes and contours. In addition, the set light-gathering sleeve can isolate the innermost ring light group from other ring light groups, which can filter out stray light from other ring light groups. When the innermost ring light group is lit, it emits scattered light towards the object under test. Compared with the traditional method of emitting parallel light, the scattered light emitted by one or more ring light groups can make the image clearer. Combined with the fact that each ring light group can be powered on independently after being powered on, the contrast of each element in the image is more obvious, improving the sensitivity of image changes during focusing, thereby improving the image quality.
[0024] In some embodiments, the welding plate has six annular partitions, which are, from the inside out: an annular incident light area, an inner three-ring angled light area, a fourth annular angled light area, a fifth annular angled light area, and a sixth annular angled light area. The inner three-ring angled light area has a first annular light group, a second annular light group, and a third annular light group arranged coaxially from the inside out. The extension lines of the illumination directions of each light-emitting diode in the annular light group all intersect at the same point.
[0025] For details, please refer to Figure 3With the axis of the second light-transmitting aperture as the center of the optical axis, the illumination directions of the LEDs in the annular incident light zone form an angle of 11° with the center of the optical axis; the LEDs in the first annular light group form an angle of 15°; the LEDs in the second annular light group form an angle of 19.5°; the LEDs in the third annular light group form an angle of 23.5°; the LEDs in the fourth annular angled light zone form an angle of 29°; the LEDs in the fifth annular angled light zone form an angle of 33°; and the LEDs in the sixth annular angled light zone form an angle of 36.5°. Thus, although the LEDs in different annular zones have different illumination angles, their focal points are all on the center of the optical axis on the same focal plane. The object being measured, located on this focal plane, receives better illumination, allowing the camera of the CCD image acquisition system to capture a clear image.
[0026] In this embodiment, the focusing sleeve is shaped like a conical sleeve with a wide end and a narrow end. The wide end is connected to the welding plate, and the narrow end covers each light-emitting diode (LED) located inside the focusing sleeve. To better filter out stray light outside the annular incident light area, in this embodiment, the narrow end covers half of each LED located inside the focusing sleeve. Specifically, the inner peripheral wall of the focusing sleeve has multiple contoured recesses, each conforming to the outer contour of each LED, with half of the outer wall of each LED located within the corresponding contoured recess. To prevent light transmission, the focusing sleeve can be made of an opaque material, such as black nylon or black ABS plastic.
[0027] In some embodiments, to facilitate the connection between the focusing sleeve and the welding plate, the welding plate is provided with two welding holes corresponding to the positions of each light-emitting diode (LED). The positive and negative terminals of each LED are inserted into the corresponding welding holes. An annular flange is provided on the periphery of the wide end, and a through-hole is provided corresponding to each welding hole on the annular flange. With this configuration, the focusing sleeve can be inserted into the corresponding welding holes through the corresponding through-holes using the positive and negative terminals of each LED. After insertion, welding is performed, thus fixing the focusing sleeve to the welding plate through the connection of multiple LEDs. This simplifies the installation method and allows for a denser arrangement of LEDs within the annular section.
[0028] Please see Figure 4 and Figure 6In some embodiments, each ring lamp group in the annular incident light area, the inner three-ring angle light area, the fourth ring angle light area, the fifth ring angle light area, and the sixth ring angle light area is powered separately; and in this embodiment, the inner three-ring angle light area has eight equally divided sector areas separated along its central axis, and the light-emitting diodes in each sector area are powered separately. Each sector area includes 6 groups of first light-emitting diodes connected in parallel, and each first light-emitting diode group includes 3 light-emitting diodes connected in series. Furthermore, the fourth ring angle light region has eight equally divided sector areas spaced apart along its central axis. The light-emitting diodes in each sector area are powered separately. Each sector area includes two sets of second light-emitting diode groups connected in parallel, and each second light-emitting diode group includes three light-emitting diodes connected in series. The fifth ring angle light region has eight equally divided sector areas spaced apart along its central axis. The light-emitting diodes in each sector area are powered separately. Each sector area includes two sets of third light-emitting diode groups connected in parallel, and each third light-emitting diode group includes three light-emitting diodes connected in series. The sixth ring angle light region has eight equally divided sector areas spaced apart along its central axis. The light-emitting diodes in each sector area are powered separately. Each sector area includes two sets of third light-emitting diode groups connected in parallel, and each third light-emitting diode group includes three light-emitting diodes connected in series. With this setup, the LED groups in the annular incident light area, the inner three-ring angled light area, the fourth ring angled light area, the fifth ring angled light area, and the sixth ring angled light area use a total of 33 DC12V(+) input channels, and then share a common output channel 0V(-). Users can control the switching and brightness of each LED group by individually adjusting the switching and current of each DC12V(+) input channel through the circuit. This allows the multimodal vision surface light source device to provide users with a variety of lighting methods to adapt to various sizes and contours of the test objects.
[0029] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.
Claims
1. A multimodal visual surface light source device, characterized in that, The multimodal visual surface light source device includes: A protective housing (100) has a mounting groove (110) and a first light-transmitting hole (110a) is provided through the bottom of the mounting groove (110); A welding plate (200) is installed at the bottom of the mounting groove (110). The welding plate (200) has a second light-transmitting hole (200a) corresponding to the first light-transmitting hole (110a). The welding plate (200) has a plurality of annular partitions arranged coaxially with the second light-transmitting hole (200a) from the inside out. Multiple sets of ring lights, each set of ring lights being composed of multiple light-emitting diodes, and the multiple sets of ring lights being installed on the corresponding ring sections; A focusing sleeve (300) is provided in a cylindrical structure. The focusing sleeve (300) is installed on the welding plate (200). The focusing sleeve (300) isolates the innermost group of the ring lights from the other groups of the ring lights. The innermost group of the ring lights is at least partially exposed inside the focusing sleeve (300).
2. The multimodal visual surface light source device according to claim 1, characterized in that, The welding plate (200) has six annular partitions, which are: annular incident light area (210), inner three-ring angle light area (220), fourth ring angle light area (230), fifth ring angle light area (240) and sixth ring angle light area (250) from the inside to the outside. The inner three-ring angle light area (220) has a first ring light group (221), a second ring light group (222) and a third ring light group (223) arranged coaxially from the inside to the outside. The extension lines of the illumination direction of each of the light-emitting diodes in the ring light group intersect at the same point.
3. The multimodal visual surface light source device according to claim 2, characterized in that, The second light-transmitting hole (200a) has its axis aligned with the optical axis center (400). The illumination direction of each light-emitting diode in the annular incident light area (210) forms an angle of 11° with the optical axis center (400). The illumination direction of each light-emitting diode in the first annular lamp group (221) forms an angle of 15° with the optical axis center (400). The illumination direction of each light-emitting diode in the second annular lamp group (222) forms an angle of 19.5° with the optical axis center (400). The third annular lamp group (223) has each... The illumination direction of each light-emitting diode (LED) forms an angle of 23.5° with the center of the optical axis (400). The illumination direction of each LED located in the fourth ring angle light region (230) forms an angle of 29° with the center of the optical axis (400). The illumination direction of each LED located in the fifth ring angle light region (240) forms an angle of 33° with the center of the optical axis (400). The illumination direction of each LED located in the sixth ring angle light region (250) forms an angle of 36.5° with the center of the optical axis (400).
4. The multimodal visual surface light source device according to claim 1, characterized in that, The focusing sleeve (300) is arranged in a conical sleeve shape and has a wide end (310) and a narrow end (320). The wide end (310) is connected to the welding plate (200), and the narrow end (320) covers each of the light-emitting diodes located inside the focusing sleeve (300).
5. The multimodal visual surface light source device according to claim 4, characterized in that, The narrow end (320) covers half of each of the light-emitting diodes located inside the light-concentrating sleeve (300).
6. The multimodal visual surface light source device according to claim 5, characterized in that, The inner peripheral wall of the light-concentrating sleeve (300) is provided with a plurality of contoured recesses (330), each contoured recess (330) is adapted to the outer contour of each light-emitting diode, and half of the outer side wall of each light-emitting diode is located in the corresponding contoured recess (330).
7. The multimodal visual surface light source device according to claim 4, characterized in that, The welding plate (200) is provided with two welding holes (260) at the positions corresponding to each of the light-emitting diodes. The positive and negative terminals of each light-emitting diode are inserted into the corresponding welding holes (260). The wide end (310) is provided with an annular flange (340) on its periphery. The annular flange (340) is provided with a through hole (341) corresponding to each of the welding holes (260).
8. The multimodal visual surface light source device according to claim 2, characterized in that, Each of the ring-shaped light groups in the annular incident light area (210), the inner three-ring angle light area (220), the fourth ring angle light area (230), the fifth ring angle light area (240), and the sixth ring angle light area (250) is powered separately.
9. The multimodal visual surface light source device according to claim 8, characterized in that, The inner three-ring angle light region (220) has eight equally divided sector regions separated along its central axis. The light-emitting diodes in each sector region are powered separately. Each sector region includes 6 groups of first light-emitting diodes connected in parallel. Each first light-emitting diode group includes 3 light-emitting diodes connected in series.
10. The multimodal vision surface light source device according to claim 8, characterized in that, The fourth ring angle light region (230) has eight equally divided sector regions separated along its central axis. The light-emitting diodes in each sector region are powered separately. Each sector region includes two groups of second light-emitting diodes connected in parallel. Each group of second light-emitting diodes includes three light-emitting diodes connected in series. The fifth ring angle light region (240) has eight equally divided sector regions separated along its central axis. The light-emitting diodes in each sector region are powered separately. Each sector region includes two groups of third light-emitting diodes connected in parallel. Each group of third light-emitting diodes includes three light-emitting diodes connected in series. The sixth ring angle light region (250) has eight equally divided sector regions spaced apart along its central axis. The light-emitting diodes in each sector region are powered separately. Each sector region includes two groups of third light-emitting diodes connected in parallel. Each group of third light-emitting diodes includes three light-emitting diodes connected in series.