Light source for glass surface defect detection
By integrating a diffuser module and a Fresnel lens module into a small device and using a beam splitter to adjust the optical path, dual-light source coaxial detection of glass surface defects is achieved. This solves the problem of difficult light source installation in small-sized devices, reduces costs, and improves detection efficiency.
Patent Information
- Application Number
- CN202520385296.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-06
AI Technical Summary
In existing technologies, small-sized equipment cannot provide enough space to install dual-station light sources while ensuring volume, resulting in high inspection costs and low efficiency, and making it difficult to simultaneously detect bumps and dirt defects on the glass surface.
The system employs a diffuser module and a Fresnel lens module housed within the housing. By using a first beam splitter and a second beam splitter to adjust the light paths of the two light sources to the same direction, it achieves coaxial integration of the two light sources. A 5:5 beam splitter prism and a beam splitter plate are used to process the light, ensuring that the light accurately detects defects on the glass surface within the small machine.
By implementing dual-light source coaxial illumination in small devices, equipment costs are reduced, space utilization and detection efficiency are improved, and detection accuracy is ensured.
Smart Images
Figure CN223955423U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model is applied to the technical field of detecting light source, and particularly relates to a light source for glass surface defect detection. BACKGROUND
[0002] The existing electronic product usually encapsulates the display screen through glass, thereby ensuring that the image display can be touched. In order to ensure the display effect, the glass needs to be detected before assembly, thereby avoiding the use of defective glass affecting the product quality. One of the defects of the glass is the concave-convex point, which is difficult to detect by conventional lighting, and needs to be detected by a Finiel lens light source. The dirt on the glass needs to be diffused by uniform coaxial light. At present, the market usually uses two cameras and two light sources to detect the conventional size product, but for small size product equipment, it is difficult to provide enough space for double stations while ensuring the volume. At the same time, the double station detection costs high, and the transfer between stations leads to low detection efficiency.
[0003] If a light source that can provide two kinds of light for detecting glass surface defects can be provided, the cost of the equipment can be greatly reduced and the space utilization can be improved. UTILITY MODEL CONTENT
[0004] The utility model solves the technical problem of overcoming the prior art, and provides a light source for glass surface defect detection that can provide two kinds of light for detecting glass surface defects for small products, thereby reducing the cost of the equipment and improving the space utilization.
[0005] The utility model adopts the technical scheme: the utility model discloses a box body and the diffusing module and the Finiel lens module that set up in the box body and the optical axis intersection, the optical axis intersection is provided with the first light splitting element, the light direction of first light splitting element is provided with the second light splitting element, the diffusing module includes diffusing lamp plate and diffusing board that set up in sequence along the optical axis, and the Finiel lens module includes direct light board and Finiel lens that set up in sequence along the optical axis.
[0006] From the above scheme, the light path of the diffusing module and the Finiel lens module is adjusted to the same direction by the first light splitting element, thereby realizing the integration of the two groups of light sources through the smallest volume, and ensuring that the two groups of light sources can provide corresponding light to enable the detection camera to accurately capture the defects on the surface of the glass product, thereby realizing the coaxial lighting of the double light sources in the small machine, reducing the equipment cost and improving the work efficiency.
[0007] A preferred solution is that the first light splitting element and the second light splitting element are arranged on the optical axis of the diffusion module, and the light of the diffusion module passes through the first light splitting element and then reaches the second light splitting element to be refracted and irradiated on the workpiece.
[0008] A preferred solution is that the optical axis of the field lens module is perpendicular to the optical axis of the diffusion module, the first light splitting element is a 5:5 light splitting prism, and the light of the field lens module passes through the first light splitting element and then passes through the second light splitting element to be refracted and irradiated on the workpiece.
[0009] A preferred solution is that the second light splitting element is a 5:5 light splitting prism.
[0010] A preferred solution is that the diffusion lamp plate and the direct irradiation lamp plate are fixed on the inner wall of the box body, and the inner wall of the box body is further provided with a first mounting sliding groove matched with the diffusion plate and the field lens.
[0011] A preferred solution is that the first light splitting element and the second light splitting element are both light splitting flat plates, and the inner wall of the box body is provided with a second mounting sliding groove matched with the first light splitting element and the second light splitting element.
[0012] A preferred solution is that the field lens module further comprises a plurality of focusing plates arranged around the direct irradiation lamp plate, and the plurality of focusing plates reflect and converge the light emitted by the direct irradiation lamp plate to the field lens.
[0013] A preferred solution is that the box body is provided with a light outlet, the light outlet is located in the light outlet direction of the second light splitting element, and the box body is further provided with a viewing window, the viewing window is located on the side of the second light splitting element away from the light outlet. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 is the first three-dimensional structure schematic diagram of the utility model;
[0015] Fig. 2 is the exploded structure schematic diagram of the utility model;
[0016] Fig. 3 is the second three-dimensional structure schematic diagram of the utility model;
[0017] Fig. 4 is the light path schematic diagram of the utility model. DETAILED DESCRIPTION
[0018] As Figs. 1 to 4As shown, in the embodiment, the utility model discloses a box 1 and the diffuse module 2 and the finial lens module 3 of optical axis intersection are arranged in the box 1, and the optical axis intersection is provided with the first light splitting element 4, the light direction of the first light splitting element 4 is provided with the second light splitting element 5, the diffuse module 2 includes diffuse lamp board 21 and diffuse board 22 that are sequentially arranged along the optical axis, and the finial lens module 3 includes straight light board 31 and finial lens 32 that are sequentially arranged along the optical axis. Through the above structure, the coaxial of double light source is realized, the problem that double work position machine table cannot be installed in small machine is solved, and then it is guaranteed that concave-convex point and dirty two kinds of defects can be highly integrated in small size machine table, the space utilization is effectively improved, and the single work position integrated detection mode eliminates the time required for transfer, that is, reduces the time required for single glass detection, and improves the detection efficiency.
[0019] In the embodiment, the first light splitting element 4 and the second light splitting element 5 are arranged on the optical axis of the diffuse module 2, and the light of the diffuse module 2 passes through the first light splitting element 4 and then reaches the second light splitting element 5 to be refracted and irradiated on the workpiece. The optical axis of the finial lens module 3 is perpendicular to the optical axis of the diffuse module 2. The setting positions of the diffuse module 2 and the finial lens module 3 can be mutually adjusted, and preferably, the optical axis of the finial lens module 3 is perpendicular to the optical axis of the diffuse module 2, which can ensure the lighting effect of the finial lens module 3. The first light splitting element 4 transmits the light of the diffuse module 2 and reflects the light of the finial lens module 3, so that the light of the finial lens module 3 and the light of the diffuse module 2 enter the second light splitting element 5 at the same incident angle, and the second light splitting element 5 reflects the entering light to the workpiece. The light direction and angle of the second light splitting element 5 can be adjusted according to requirements.
[0020] In the embodiment, the diffuse lamp board 21 and the straight light board 31 are fixed on the inner wall of the box 1, and the inner wall of the box 1 is further provided with a first mounting sliding groove matched with the diffuse board 22 and the finial lens 32. The sliding groove structure is adopted for limiting, and installation and later replacement are facilitated.
[0021] In the embodiment, the first light splitting element 4 and the second light splitting element 5 are both light splitting flat sheets, and the inner wall of the box 1 is provided with a second mounting sliding groove matched with the first light splitting element 4 and the second light splitting element 5. The light splitting flat sheet is adopted for light processing, and the mounting sliding groove is matched to realize rapid installation and replacement and maintenance.
[0022] Another implementation is that one or both of the first light splitting element 4 and the second light splitting element 5 is a 5:5 light splitting prism, and the light of the Finel lens module 3 is refracted by the first light splitting element 4 and then refracted by the second light splitting element 5 to the workpiece. The 5:5 light splitting prism is used as the light splitting element to realize the processing of the light.
[0023] In the embodiment, the Finel lens module 3 further comprises a plurality of focusing plates 33 arranged around the direct light plate 31 respectively, and the focusing plates 33 reflect and converge the light emitted by the direct light plate 31 to the Finel lens 32, thereby improving the light output effect of the Finel lens module 3, ensuring that sufficient detection light is provided in a compact space, and ensuring that the detection camera can better obtain the defect image of the product.
[0024] In the embodiment, the box 1 is provided with a light outlet 11, and the light outlet 11 is located in the light output direction of the second light splitting element 5. The box 1 is also provided with a viewing window 12, and the viewing window 12 is located on the side of the second light splitting element 5 away from the light outlet 11. The light outlet 11 corresponds to the detection station of the product to be detected, and the light output by the second light splitting element 5 is irradiated on the surface of the product to be detected after passing through the light outlet 11. The viewing window 12 is used for maintenance detection by the operator, and the lens of the viewing window 12 reduces the brightness, thereby facilitating the confirmation of the light by the operator, so that the post-maintenance can be performed in the case that the detection area is small.
[0025] Although the embodiments of the utility model are described in actual schemes, but do not constitute the limitation to the meaning of the utility model, and for the person skilled in the art, according to the modification of the embodiments of the present specification and the combination with other schemes, it is obvious.
Claims
1. A light source for glass surface defect detection, characterized by: It includes a box (1), and the diffusing module (2) and the Finiel lens module (3) are arranged in the box (1) and the optical axes intersect, the first light splitting element (4) is arranged at the intersection of the optical axes, the light-emitting direction of the first light splitting element (4) is provided with the second light splitting element (5), the diffusing module (2) includes diffusing lamp panels (21) and diffusing plates (22) arranged along the optical axis in sequence, and the Finiel lens module (3) includes straight lamp panels (31) and Finiel lenses (32) arranged along the optical axis in sequence.
2. The light source for glass surface defect detection according to claim 1, wherein: The first light splitting element (4) and the second light splitting element (5) are arranged on the optical axis of the diffusing module (2), and the light of the diffusing module (2) passes through the first light splitting element (4) and then reaches the second light splitting element (5) to be refracted and irradiated on the workpiece. 3. The light source for glass surface defect detection according to claim 1, wherein: The optical axis of the Finiel lens module (3) is perpendicular to the optical axis of the diffusing module (2), the first light splitting element (4) is a 5:5 light splitting prism, and the light of the Finiel lens module (3) is refracted through the first light splitting element (4) and then refracted through the second light splitting element (5) to the workpiece.
4. The light source for glass surface defect detection according to claim 1, wherein: The second light splitting element (5) is a 5:5 light splitting prism.
5. The light source for glass surface defect detection according to claim 1, wherein: The diffusing lamp panels (21) and the straight lamp panels (31) are fixed on the inner wall of the box (1), and the inner wall of the box (1) is further provided with a first mounting sliding groove matched with the diffusing plates (22) and the Finiel lenses (32).
6. The light source for glass surface defect detection according to claim 1, wherein: The first light splitting element (4) and the second light splitting element (5) are light splitting flat sheets, and the inner wall of the box (1) is provided with a second mounting sliding groove matched with the first light splitting element (4) and the second light splitting element (5).
7. The light source for glass surface defect detection according to claim 1, wherein: The Finiel lens module (3) further includes a plurality of focusing plates (33) arranged around the straight lamp panels (31) respectively, and the plurality of focusing plates (33) reflect and converge the light emitted by the straight lamp panels (31) to the Finiel lenses (32).
8. The light source for glass surface defect detection according to claim 1, wherein: The box (1) is provided with a light outlet (11), the light outlet (11) is located in the light-emitting direction of the second light splitting element (5), and the box (1) is further provided with a window (12), and the window (12) is located on the side of the second light splitting element (5) away from the light outlet (11).