Light source for image acquisition

Abstract

The utility model discloses a light source for image acquisition, which comprises a substrate, the substrate comprises a plurality of first mounting positions arranged in an array, and first light-emitting elements are mounted on the first mounting positions; and the first mounting position and the extension plane of the substrate are arranged in a non-parallel manner, so that the plurality of first light-emitting elements emit light at a non-right-angle first preset angle relative to the extension plane of the substrate. According to the light source for image acquisition, a non-right-angle light emitting direction can be realized in a limited installation space, so that the light source can better adapt to various complicated installation environments. Therefore, the installation space required by the light source for image acquisition is relatively small, and different light emitting directions can be realized so as to meet the requirement of image acquisition.

Description

Technical Field

[0001] This utility model belongs to the field of lighting device technology, specifically relating to a light source for image acquisition. Background Technology

[0002] In industrial surface inspection scenarios, how to specifically present surface defects using a particular lighting system is a crucial issue. Common methods include high-angle lighting, low-angle lighting, bright-field lighting, and dark-field lighting. However, in many cases, the characteristics of defects require simultaneous illumination from different directions to achieve the desired effect. Ordinary strip LEDs illuminate vertically downwards with a single direction, and the illumination direction can only be controlled by adjusting the overall angle of the light source. Integrating cup beams can provide multi-directional illumination, but their light source volume needs to be larger than the field of view being captured. In practical industrial surface inspection scenarios, especially within the limited space of online scanning inspection, these lighting methods are not feasible.

[0003] Therefore, in order to address the aforementioned technical problems, it is necessary to provide a light source for image acquisition. Utility Model Content

[0004] The purpose of this invention is to provide a light source for image acquisition that can solve the problems of the above-mentioned light source having a single illumination direction angle and requiring a large installation space.

[0005] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0006] A light source for image acquisition includes a substrate, the substrate including a plurality of first mounting positions arranged in an array, and a first light-emitting element is mounted on the first mounting position;

[0007] The first mounting position is not parallel to the extended plane of the substrate, so that the plurality of first light-emitting elements emit light at a first predetermined angle that is not right-angled with the extended plane of the substrate.

[0008] In one or more embodiments of the present invention, the substrate further includes a plurality of second mounting positions arranged in an array, the first mounting positions and the second mounting positions being arranged at intervals, and a second light-emitting element being mounted on the second mounting position;

[0009] The second mounting position is not parallel to the extended plane of the substrate, so that the plurality of second light-emitting elements emit light at a second predetermined angle that is not right-angled with the extended plane of the substrate, and the light emission directions of the first light-emitting element and the second light-emitting element are not parallel.

[0010] In one or more embodiments of this utility model, the array reference line of the plurality of first mounting positions is collinear or not collinear with the array reference line of the plurality of second mounting positions.

[0011] In one or more embodiments of this utility model, the first predetermined angle and the second predetermined angle are equal.

[0012] In one or more embodiments of this utility model, both the first predetermined angle and the second predetermined angle are 45°.

[0013] In one or more embodiments of the present invention, the substrate includes a plate-shaped extended body portion and a plurality of bases disposed on the body portion. The plurality of bases are arranged in a linear array, and a plurality of first mounting positions are correspondingly disposed on the plurality of bases. The light emission path of the first light-emitting element on any of the bases does not interfere with the adjacent bases.

[0014] In one or more embodiments of the present invention, the substrate includes a plate-shaped extended body portion and a plurality of bases disposed on the body portion. The plurality of bases are arranged in a linear array. Each of the bases is provided with a first mounting position and a second mounting position. The light emission paths of the first light-emitting element and the second light-emitting element on any of the bases do not interfere with each other with the adjacent bases.

[0015] In one or more embodiments of this utility model, any of the bases includes a first mounting surface and a second mounting surface whose extension directions intersect, the first mounting position being located on the first mounting surface and the second mounting position being located on the second mounting surface; or,

[0016] Each of the bases includes a curved mounting surface, with the first mounting position and the second mounting position located at different positions on the mounting surface.

[0017] In one or more embodiments of the present invention, the first light-emitting element and the second light-emitting element on any of the bases are arranged symmetrically; and / or, at least two first light-emitting elements and the second light-emitting element are provided on the base.

[0018] In one or more embodiments of this utility model, the base is provided with a protrusion away from the main body, and both the first mounting surface and the second mounting surface are located on the protrusion; or,

[0019] The base is provided with a recessed portion that is recessed toward the main body portion, and both the first mounting surface and the second mounting surface are located in the recessed portion.

[0020] Compared with existing technologies, the image acquisition light source of this invention has a substrate with multiple arrayed first mounting positions, and a first light-emitting element is mounted on each of the first mounting positions, thereby forming a strip light source that meets the requirements. By setting the first mounting positions to be non-parallel to the extended plane of the substrate, the light source has the ability to emit light in a non-right-angle direction. The image acquisition light source of this invention can achieve a non-right-angle light emission direction within a limited installation space, thus better adapting to various complex installation environments. Therefore, the image acquisition light source of this invention requires relatively little installation space and can achieve different light emission directions to meet the requirements of image acquisition. Attached Figure Description

[0021] 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 recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a cross-sectional schematic diagram of the light source used for image acquisition in Embodiment 1 of this utility model;

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 This is a cross-sectional schematic diagram of the light source used for image acquisition in Embodiment 2 of this utility model;

[0025] Figure 4 for Figure 3 Enlarged diagram of point B in the middle.

[0026] Explanation of key figure labels:

[0027] 1. Substrate; 11. Body; 12. Base; 121. First mounting surface; 122. Second mounting surface; 2. First light-emitting element; 3. Second light-emitting element; 4. Housing; 5. Transparent plate. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of 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 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 should fall within the protection scope of this utility model.

[0029] Example 1

[0030] Reference Figure 1 and Figure 2 In this embodiment, the image acquisition light source includes a substrate 1, which includes multiple arrayed first mounting positions. First light-emitting elements 2 are mounted on the first mounting positions. The first mounting positions are not parallel to the extended plane of the substrate 1, so that the multiple first light-emitting elements 2 emit light relative to the extended plane of the substrate 1 at a non-right-angled first predetermined angle. The first predetermined angle is the acute angle formed between the light emission direction of the first light-emitting element 2 and the extended plane of the substrate 1. The first light-emitting elements 2 can be LED lamps or other related light-emitting elements.

[0031] Reference Figure 1 and Figure 2 The substrate 1 includes a plate-shaped extended body portion 11 and a plurality of bases 12 disposed on the body portion 11. The plurality of bases 12 are arranged in a linear array, and a plurality of first mounting positions are correspondingly disposed on the plurality of bases 12. The light emission path of the first light-emitting element 2 on any base 12 does not interfere with the adjacent base 12, thereby ensuring that the first light-emitting element 2 can effectively illuminate the object under test. In this embodiment, the base 12 is provided with a mounting surface, and the first mounting position is located on the mounting surface.

[0032] It is understandable that the extended plane of the substrate 1 described above can be understood as the plane defined by the extension direction of the body portion 11. Furthermore, by reasonably setting the distance between two adjacent bases 12, the light emission path of the first light-emitting element 2 can be made to not interfere with the adjacent base 12. Alternatively, by setting the shape of the base 12 or the angle value of a first predetermined angle, the light emission path of the first light-emitting element 2 can be made to not interfere with the adjacent base 12.

[0033] During image acquisition, lighting settings are typically required to ensure a clear and complete image of the object being measured. Different shooting needs may involve different light emission directions. Existing light sources typically emit light perpendicular to the extended plane of the base 12. If other light emission directions are required, the tilt angle of the entire light source needs to be adjusted. If the installation space for the light source is limited, it may prevent the effective implementation of other light emission directions.

[0034] In this embodiment of the image acquisition light source, by setting the first mounting position to be non-parallel to the extended plane of the substrate 1, the light source possesses the ability to emit light in a non-right-angle direction. Therefore, the image acquisition light source of this invention can achieve a non-right-angle light emission direction within a limited installation space, thereby better adapting to various complex installation environments. Simultaneously, the image acquisition light source of this invention requires relatively little installation space and can achieve different light emission directions to meet image acquisition requirements.

[0035] Example 2

[0036] Reference Figure 3 and Figure 4 In this embodiment, the image acquisition light source includes a substrate 1. The substrate 1 includes a plurality of first mounting positions arranged in an array, and a first light-emitting element 2 is mounted on the first mounting position. The first mounting positions are not parallel to the extended plane of the substrate 1, so that the plurality of first light-emitting elements 2 emit light at a non-right-angled first predetermined angle relative to the extended plane of the substrate 1. The substrate 1 also includes a plurality of second mounting positions arranged in an array, and the first mounting positions and the second mounting positions are arranged at intervals. A second light-emitting element 3 is mounted on the second mounting position.

[0037] The second mounting position is not parallel to the extended plane of the substrate 1, so that the plurality of second light-emitting elements 3 emit light at a non-right-angled second predetermined angle relative to the extended plane of the substrate 1, and the light emission directions of the first light-emitting element 2 and the second light-emitting element 3 are not parallel. The first predetermined angle is the acute angle formed between the light emission direction of the first light-emitting element 2 and the extended plane of the substrate 1. The second predetermined angle is the acute angle formed between the light emission direction of the second light-emitting element 3 and the extended plane of the substrate 1. Both the first light-emitting element 2 and the second light-emitting element 3 can be LED lamps or other related light-emitting elements.

[0038] In this embodiment, by setting a first mounting position, a first light-emitting element 2, a second mounting position, and a second light-emitting element 3, the image acquisition light source in this embodiment can have different light emission directions as much as possible within a limited installation space to meet different lighting direction requirements.

[0039] Understandably, in other embodiments, more mounting positions may be provided on the substrate 1 so that the image acquisition light source of this utility model has multiple different light emission directions.

[0040] Reference Figure 3 and Figure 4 In this embodiment, the array reference lines of the plurality of first mounting positions are collinear with the array reference lines of the plurality of second mounting positions. In other embodiments, the array reference lines of the plurality of first mounting positions and the array reference lines of the plurality of second mounting positions may not be collinear. That is, the first mounting positions and the second mounting positions may also be... Figure 4 The mounting positions are staggered on the plane. Therefore, the arrangement of the first and second mounting positions can be set according to the actual light emission requirements.

[0041] Reference Figure 3 and Figure 4The substrate 1 includes a plate-shaped extended body portion 11 and a plurality of bases 12 disposed on the body portion 11. The plurality of bases 12 are arranged in a linear array. Each base 12 is provided with a first mounting position and a second mounting position. The light emission paths of the first light-emitting element 2 and the second light-emitting element 3 on any base 12 do not interfere with each other with the adjacent bases 12, thereby ensuring that the first light-emitting element 2 and the second light-emitting element 3 can effectively illuminate the object under test.

[0042] In this embodiment, the first predetermined angle and the second predetermined angle are equal. Preferably, both the first predetermined angle and the second predetermined angle are 45°. When both the first predetermined angle and the second predetermined angle are 45°, the light emission paths of the first light-emitting element 2 and the second light-emitting element 3 do not interfere with the adjacent base 12. It is understood that in other embodiments, the light emission paths of the first light-emitting element 2 and the second light-emitting element 3 can also be made non-interfering with the adjacent base 12 by reasonably setting the distance between two adjacent bases 12.

[0043] Reference Figure 3 and Figure 4 Each base 12 includes a first mounting surface 121 and a second mounting surface 122 intersecting in their extending directions. A first mounting position is located on the first mounting surface 121, and a second mounting position is located on the second mounting surface 122. In this embodiment, the base 12 is provided with a protrusion away from the body portion 11, and both the first mounting surface 121 and the second mounting surface 122 are located on the protrusion. In other embodiments, the base 12 may also be provided with a recessed portion recessed towards the body portion 11, and both the first mounting surface 121 and the second mounting surface 122 are located on the recessed portion. The specific shape of the base 12 can be specifically set according to the actual light emission direction requirements.

[0044] In one optional embodiment, any base 12 includes a curved mounting surface, with the first mounting position and the second mounting position located at different positions on the mounting surface. The curved mounting surface of the base 12 can also satisfy the different light emission requirements of the first light-emitting element 2 and the second light-emitting element 3.

[0045] Reference Figure 3 and Figure 4 In one optional embodiment, the first light-emitting element 2 and the second light-emitting element 3 on any base 12 are arranged symmetrically. The first mounting surface 121 is provided with at least one first mounting position, and the second mounting surface 122 is provided with at least one second mounting position. At least two first light-emitting elements 2 and two light-emitting elements 3 are provided on the base 12. The illumination intensity of the light source for image acquisition in this embodiment can be controlled by setting the number of first light-emitting elements 2 and second light-emitting elements 3.

[0046] Furthermore, the image acquisition light source of this utility model may also include a housing 4 and a transparent plate 5. The base 12, the first light-emitting element 2 and the second light-emitting element 3 can all be installed in the housing 4, and the light-emitting surfaces of the first light-emitting element 2 and the second light-emitting element 3 face the transparent plate 5 so that light passes through the transparent plate 5 to illuminate the object under test for image acquisition.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An illumination source for image acquisition, characterized in that The substrate (1) comprises a plurality of first mounting positions arranged in an array, and a first light emitting element (2) is mounted on each first mounting position; The first mounting position is arranged non-parallel to the extension plane of the substrate (1), so that the plurality of first light emitting elements (2) emit light at a first predetermined angle which is not a right angle relative to the extension plane of the substrate (1).

2. The light source for image acquisition according to claim 1, characterized in that, The substrate (1) further comprises a plurality of second mounting positions arranged in an array, and a second light emitting element (3) is mounted on each second mounting position; The second mounting position is arranged non-parallel to the extension plane of the substrate (1), so that the plurality of second light emitting elements (3) emit light at a second predetermined angle which is not a right angle relative to the extension plane of the substrate (1), and the light emitting directions of the first light emitting elements (2) and the second light emitting elements (3) are non-parallel.

3. The light source for image acquisition according to claim 2, characterized in that, The array reference straight line of the plurality of first mounting positions is collinear or non-collinear with the array reference straight line of the plurality of second mounting positions.

4. The light source for image acquisition according to claim 2, characterized by The first predetermined angle and the second predetermined angle are equal.

5. The light source for image acquisition according to claim 4, characterized in that, The first predetermined angle and the second predetermined angle are both 45°.

6. The light source for image acquisition according to claim 1, wherein The substrate (1) comprises a plate-shaped body portion (11) and a plurality of pedestals (12) arranged on the body portion (11), the plurality of pedestals (12) are arranged in a linear array, and the plurality of first mounting positions are arranged on the plurality of pedestals (12) correspondingly, and the light emitting path of the first light emitting element (2) on any one of the pedestals (12) does not interfere with the adjacent pedestal (12).

7. The light source for image acquisition according to any one of claims 2 to 5, characterized in that, The substrate (1) comprises a plate-shaped body portion (11) and a plurality of pedestals (12) arranged on the body portion (11), the plurality of pedestals (12) are arranged in a linear array, and the plurality of first mounting positions and the plurality of second mounting positions are arranged on any one of the pedestals (12) correspondingly, and the light emitting path of the first light emitting element (2) and the second light emitting element (3) on any one of the pedestals (12) does not interfere with the adjacent pedestal (12).

8. The light source for image acquisition according to claim 7, characterized in that, Any one of the pedestals (12) comprises a first mounting surface (121) and a second mounting surface (122) intersecting in the extension direction, the first mounting position is located on the first mounting surface (121), and the second mounting position is located on the second mounting surface (122); or, Any one of the pedestals (12) comprises a curved mounting surface, and the first mounting position and the second mounting position are located at different positions of the mounting surface.

9. The light source for image acquisition according to claim 8, characterized in that, The first light emitting element (2) and the second light emitting element (3) on any one of the pedestals (12) are arranged symmetrically; and / or, at least two first light emitting elements (2) and second light emitting elements (3) are arranged on the pedestal (12).

10. The light source for image acquisition according to claim 8, wherein The pedestal (12) is provided with a protruding portion away from the body portion (11), and the first mounting surface (121) and the second mounting surface (122) are both located on the protruding portion; or, The pedestal (12) is provided with a recessed portion recessed towards the body portion (11), and the first mounting surface (121) and the second mounting surface (122) are both located on the recessed portion.

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