Light source target integrated device and dual light fusion test system
Patent Information
- Application Number
- CN202522475817.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-21
AI Technical Summary
常见的做法是使用独立的紫外光源和可见光靶标，这种组合存在安装调试复杂、光路一致性差、无法保证两个模组视场完全重合等问题，导致测试结果不准确、可靠性低，且不适合在生产线上进行快速、批量测试
[0016]本实用新型中，将非可见光源与靶标板在物理上集成为一体，并且在靶标图案的区域内设置镂空孔，靶标图案为可见光图像提供了明确的方向基准和丰富的特征点，便于进行图像的旋转、缩放等仿射变换验证，镂空孔则是两个通道共同的核心，这从物理层面确保了非可见光通道与可见光通道的检测基准是严格同源的，消除了分立式装置因装调误差和相对位移带来的基准不统一问题，为高精度测试奠定了坚实基础。
Smart Images
Figure CN224837029U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of optical detection technology, specifically relating to an integrated light source and target device and a dual-light fusion testing system equipped with the integrated light source and target device. Background Technology
[0002] With the development of solar-blind ultraviolet (UV) detection technology, UV imagers have been widely used in civilian fields such as power, fire protection, and environmental monitoring. While UV imagers can reliably detect the location and intensity of specific UV light sources (such as electric arcs and flames), the lack of a spatial reference frame leads to a decrease in absolute positioning accuracy and an inability to identify the topological relationship between the discharge point and surrounding objects. UV-Vis dual-light fusion imaging systems can better solve this problem. These systems use optical elements such as beam splitters to combine the UV imaging module and the visible light imaging module, aiming to accurately superimpose invisible UV signals (such as corona discharge) with the visible light background image, thereby achieving rapid fault location.
[0003] However, the core performance indicator of a dual-light fusion system—fusion accuracy (i.e., the spatial alignment accuracy between the ultraviolet and visible light images)—requires high-precision calibration and testing. A common approach is to use separate ultraviolet light sources and visible light targets. This combination suffers from complex installation and debugging, poor optical path consistency, and the inability to guarantee complete overlap of the fields of view between the two modules. This results in inaccurate test results, low reliability, and is unsuitable for rapid, batch testing on production lines. Utility Model Content
[0004] This utility model relates to an integrated light source and target device and a dual-light fusion testing system equipped with the integrated light source and target device, which can at least solve some of the defects of the prior art.
[0005] This utility model relates to an integrated light source and target device, comprising a hollow shell, a non-visible light source at one end of the shell, a target plate at the other end of the shell, and a shaping mechanism for shaping the light source beam into a parallel flat-top beam arranged between the non-visible light source and the target plate. The target plate is provided with a hollow hole and a target pattern for providing a spatial orientation reference in a visible light image, the target pattern being distributed around the hollow hole.
[0006] As one embodiment, the target pattern is a cross-shaped mark, and the perforation is located at the center of the cross-shaped mark.
[0007] As one embodiment, the target surface of the target pattern is provided with a black coating.
[0008] As one implementation method, the non-visible light source is an ultraviolet light source.
[0009] As one implementation method, the spectral band of the ultraviolet light source is 265nm~280nm.
[0010] As one implementation method, the non-visible light source uses LED beads.
[0011] As one embodiment, the shaping mechanism includes a collimating lens and a homogenizing plate for shaping a Gaussian beam into a flat-top beam, wherein the non-visible light source, the collimating lens, the homogenizing plate, and the target plate are arranged in sequence.
[0012] As one implementation method, the perforated hole is a round hole.
[0013] As one implementation method, the non-visible light source is coaxially arranged with the hollow hole.
[0014] This utility model also relates to a dual-light fusion testing system, including a reflective collimator and a light source-target integrated device as described above, wherein the housing is mounted on the reflective collimator.
[0015] This utility model has at least the following beneficial effects:
[0016] In this invention, the non-visible light source and the target plate are physically integrated into one unit, and a hollow hole is set in the area of the target pattern. The target pattern provides a clear directional reference and rich feature points for the visible light image, which facilitates the verification of affine transformations such as image rotation and scaling. The hollow hole is the common core of the two channels. This ensures from a physical perspective that the detection reference of the non-visible light channel and the visible light channel is strictly homologous, eliminating the problem of inconsistent reference caused by assembly and adjustment errors and relative displacement in discrete devices, and laying a solid foundation for high-precision testing.
[0017] In this invention, the entire device is an independent module with a compact structure and standard interfaces. Users do not need to have professional optical assembly and adjustment knowledge to connect it to a standard collimator and start testing immediately. This greatly reduces the technical threshold and operational complexity of dual-light fusion system testing, making it very suitable for rapid batch testing on production lines, precision measurement in laboratories, and regular equipment calibration. It is highly practical and easy to promote industrialization. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 A schematic diagram of the integrated light source and target device provided in this embodiment of the utility model;
[0020] Figure 2 This is a schematic diagram of the target plate structure;
[0021] Figure 3 This is a schematic diagram of a dual-light fusion testing system;
[0022] Figure 4 This is a schematic diagram of the optical path of a dual-light fusion product. Detailed Implementation
[0023] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0024] like Figure 1 This utility model provides a light source and target integrated device 100, including a hollow shell 1. One end of the shell 1 is provided with a non-visible light source 2, and the other end of the shell 1 is provided with a target plate 5. A shaping mechanism for shaping the light source beam into a parallel flat-top beam is arranged between the non-visible light source 2 and the target plate 5. The target plate 5 is provided with a hollow hole 52 and a target pattern 51 for providing a spatial orientation reference in a visible light image. The target pattern 51 is distributed around the hollow hole 52.
[0025] The aforementioned housing 1 is preferably a cylindrical housing 1.
[0026] In one embodiment, the aforementioned non-visible light source 2 is an ultraviolet light source, and the aforementioned integrated light source and target device 100 can be used for ultraviolet-visible dual-light fusion testing. Furthermore, the aforementioned ultraviolet light source preferably adopts a solar-blind ultraviolet band with a spectral band of 265nm~280nm. This band can effectively avoid the solar radiation background, ensuring the sensitivity and reliability of ultraviolet signal detection.
[0027] Optionally, such as Figure 2 The target pattern 51 is a cross-shaped mark, and the perforated hole 52 is located at the center of the cross-shaped mark. However, it is not limited to the cross-shaped mark; target patterns 51 in the shape of letters such as square, ring, and X are also applicable to this embodiment.
[0028] Preferably, the target pattern 51 is a solid pattern to facilitate imaging; further, the target surface of the target pattern 51 is provided with a black coating. The black coating can reduce the reflectivity of the target surface of the target pattern 51, and both the reflected visible light and ultraviolet light can be absorbed. On the one hand, it forms an extremely sharp contrast in visible light imaging, which is convenient for image recognition; on the other hand, it can minimize the interference of the target background on ultraviolet imaging and improve the signal-to-noise ratio.
[0029] Optionally, the ultraviolet light source is a point-emitting light source, which can be matched to the test in the actual scenario.
[0030] Optionally, the non-visible light source 2 uses LED beads, which have the advantages of small size, low power consumption, long life and simple driving, and are particularly suitable for integration into compact devices. Its initial light emission characteristics are point diverging light sources.
[0031] The aforementioned shaping mechanism can shape the light beam emitted by the non-visible light source 2 into parallel light and a flat-top light. Preferably, as shown in the example... Figure 1 The shaping mechanism includes a collimating lens 3 and a homogenizing plate 4 for shaping the Gaussian beam into a flat-top beam. The non-visible light source 2, the collimating lens 3, the homogenizing plate 4, and the target plate 5 are arranged sequentially. The collimating lens 3 converts the point-divergent light emitted from the non-visible light source 2 into a parallel beam (typically Gaussian-distributed parallel light). The homogenizing plate 4 (such as a diffractive optical element or microlens array) homogenizes the Gaussian beam, shaping it into a flat-top beam with uniform energy distribution across its cross-section. After exiting the perforated hole 52, the parallel flat-top beam forms a uniform illumination spot in the far field. Its centroid position is stable and not easily affected by small changes in the detector position, greatly improving the repeatability and accuracy of coordinate extraction.
[0032] More preferably, such as Figure 1 The non-visible light source 2, collimating lens 3, light homogenizer 4, and target plate 5 are arranged coaxially in sequence.
[0033] Based on the aforementioned integrated light source and target device 100, the light emitted by the non-visible light source 2 is transformed into a uniform and parallel beam after passing through the shaping mechanism, which vertically illuminates the target. The device simultaneously outputs two physical signals:
[0034] For the visible light imaging module, an image with a bright background, a high-contrast target pattern 51, and a central hole is seen;
[0035] For non-visible light imaging modules, a bright spot with clear boundaries is seen against a dark background.
[0036] Preferably, such as Figure 2The hollow hole 52 is preferably circular. Therefore, the central hole of the visible light imaging module is circular, and the light spot of the non-visible light imaging module is circular. Because a circle is the easiest geometric shape to extract sub-pixel-level edges and calculate the centroid in image processing, ensuring the highest accuracy in coordinate positioning, using a circular hole for the hollow hole 52 can improve the accuracy of dual-light fusion testing.
[0037] Preferably, the non-visible light source 2 is coaxially arranged with the perforated hole 52. This ensures the uniformity and symmetry of the light spot and avoids systematic errors caused by eccentricity.
[0038] In this embodiment, the non-visible light source 2 and the target plate 5 are physically integrated into one unit, and a hollow hole 52 is set in the area of the target pattern 51. The target pattern 51 provides a clear directional reference and rich feature points for the visible light image, which facilitates the verification of affine transformations such as image rotation and scaling. The hollow hole 52 is the common core of the two channels. This ensures from a physical perspective that the detection reference of the non-visible light channel and the visible light channel is strictly homogeneous, eliminating the problem of inconsistent reference caused by assembly and adjustment errors and relative displacement in discrete devices, and laying a solid foundation for high-precision testing.
[0039] In this embodiment, the entire device is a single, compact module with standard interfaces. Users do not need to have professional optical assembly and adjustment knowledge to connect it to a standard collimator 200 and start testing immediately. This greatly reduces the technical threshold and operational complexity of testing dual-light fusion systems, making it very suitable for rapid batch testing on production lines, precision measurement in laboratories, and regular equipment calibration. It is highly practical and easy to promote industrialization.
[0040] like Figure 3 This utility model embodiment also provides a dual-light fusion testing system for testing dual-light fusion products 300, including a reflective parallel light tube 200 and a light source target integrated device 100 as described above, wherein the housing 1 is mounted on the reflective parallel light tube 200.
[0041] The housing 1 of the aforementioned integrated light source and target device 100 can be securely mounted on the focal plane (or entrance) of the reflective collimator 200 via a standard mechanical interface (such as a flange).
[0042] like Figure 4Taking ultraviolet light as an example, ultraviolet and visible light are fed into the dual-light fusion product 300 through a reflective collimator 200. In the dual-light fusion product 300, the visible light module 301 and the ultraviolet module 302 are coaxially aligned using a 45° beam splitter. The visible and ultraviolet images are superimposed, mapping the visible light circular target image (corresponding to the scheme where the cutout hole 52 is a circular hole) onto the ultraviolet image. The centroid coordinates of the two circular images can be obtained separately, and the coordinate deviations in the two directions, dx and dy, can be calculated. The combined deviation is dθ, where dθ = sqrt[(dx)]. 2 +(dy) 2 Given the field of view and resolution of the ultraviolet module 302, the fusion accuracy (mrad) can be obtained by dividing the field of view by the resolution and multiplying by the fusion bias.
[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A light source and target integrated device, characterized in that, The device includes a hollow shell, one end of which is provided with a non-visible light source, and the other end of which is provided with a target plate. A shaping mechanism for shaping the light source beam into a parallel flat-top beam is arranged between the non-visible light source and the target plate. The target plate is provided with a hollow hole and a target pattern for providing a spatial orientation reference in a visible light image. The target pattern is distributed around the hollow hole.
2. The integrated light source and target device as described in claim 1, characterized in that: The target pattern is a cross-shaped mark, and the perforation is located at the center of the cross-shaped mark.
3. The integrated light source and target device as described in claim 1, characterized in that: The target surface of the target pattern has a black coating.
4. The integrated light source and target device as described in claim 1, characterized in that: The non-visible light source is an ultraviolet light source.
5. The integrated light source and target device as described in claim 4, characterized in that: The ultraviolet light source has a spectral band of 265nm~280nm.
6. The integrated light source and target device as described in any one of claims 1 to 5, characterized in that: The non-visible light source uses LED lamp beads.
7. The integrated light source and target device as described in claim 1 or 5, characterized in that: The shaping mechanism includes a collimating lens and a homogenizing plate for shaping a Gaussian beam into a flat-top beam. The non-visible light source, the collimating lens, the homogenizing plate, and the target plate are arranged in sequence.
8. The integrated light source and target device as described in claim 1, characterized in that: The perforated hole is a round hole.
9. The integrated light source and target device as described in claim 1 or 8, characterized in that: The non-visible light source is coaxially arranged with the hollow hole.
10. A dual-light fusion testing system, comprising a reflective collimator, characterized in that: It also includes the integrated light source and target device as described in any one of claims 1 to 9, wherein the housing is mounted on the reflective collimator.