Combined light source device

Abstract

The utility model relates to the technical field of light sources, and discloses a combined light source device, which comprises a first linear light source assembly, a second linear light source assembly and a light source assembly, light emitted by the first linear light source is condensed by the first condensation strip, then is emitted to the spectroscope, and is reflected by the spectroscope to be emitted to a to-be-detected workpiece; the second linear light source assembly comprises a second linear light source, a second condensation strip and a first mirror reflector, light emitted by the second linear light source is condensed by the second condensation strip, then is emitted to the first mirror reflector, and is reflected by the first mirror reflector to be emitted to the workpiece to be detected; the lighting area of the first linear light source assembly and the lighting area of the second linear light source assembly are at least partially overlapped. The combined light source device provided by the utility model can further improve the lighting effect so as to better detect the surface defects on the workpiece to be detected.

Description

Technical Field

[0001] The utility model relates to the technical field of light sources, in particular to a combined light source device. Background Art

[0002] The current light source device mainly includes a lamp bead and a spectroscope. The light emitted by the lamp bead is reflected by the spectroscope and then emitted to the workpiece to be inspected, thereby illuminating the set area of ​​the workpiece to be inspected. According to the shape, the light source can be divided into a linear light source, a surface light source, a spherical integral light source, etc. The existing linear light source device has poor lighting brightness, and the light emission direction is basically uniform, resulting in poor lighting effect, which makes it difficult to detect subtle scratches or other defects, which is not conducive to improving the accuracy of defect detection.

[0003] In view of this, it is necessary to design a combined light source device to further improve the lighting effect so as to better detect surface defects on the workpiece to be inspected.

[0004] The above information is presented as background information only to assist with understanding the present disclosure and no determination or admission is made as to whether any of the above may be used as prior art with respect to the present disclosure. Utility Model Content

[0005] The utility model provides a combined light source device to further improve the lighting effect and better detect surface defects on a workpiece to be detected.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A combined light source device, comprising:

[0008] The first linear light source assembly comprises a first linear light source, a beam splitter and a first focusing bar parallel to the first linear light source; the light emitted by the first linear light source is focused by the first focusing bar and then emitted to the beam splitter, and is reflected by the beam splitter and emitted to the workpiece to be inspected;

[0009] A second linear light source assembly comprises a second linear light source, a second focusing bar and a first mirror reflector, wherein the light emitted by the second linear light source is focused by the second focusing bar and then emitted to the first mirror reflector, and then reflected by the first mirror reflector and emitted to the workpiece to be inspected;

[0010] The illumination area of ​​the first linear light source assembly and the illumination area of ​​the second linear light source assembly at least partially overlap.

[0011] Optionally, the first linear light source, the first light focusing bar and the beam splitter are arranged in sequence along a first direction; and the second linear light source, the second light focusing bar and the first mirror reflector are arranged in sequence along a second direction.

[0012] Optionally, the combined light source device also includes a third linear light source assembly, which includes a third linear light source, a third focusing bar and a second mirror reflector; the light emitted by the third linear light source is focused by the third focusing bar and then emitted to the second mirror reflector, and is reflected by the second mirror reflector to be emitted to the workpiece to be inspected.

[0013] Optionally, the second linear light source assembly and the third linear light source assembly are arranged on two opposite sides of the first linear light source assembly.

[0014] Optionally, the combined light source device also includes a mounting plate, the first linear light source assembly, the second linear light source assembly and the third linear light source assembly are all mounted on one side of the bottom of the mounting plate, and a camera detection hole is provided on the mounting plate corresponding to the beam splitter.

[0015] Optionally, the mirror surface of the first mirror reflector is a plane or a concave arc surface; the mirror surface of the second mirror reflector is a plane or a concave arc surface.

[0016] Optionally, the first linear light source assembly further includes a light absorbing plate, which is mounted on a side of the beam splitter away from the first light focusing bar; along the first direction, the first light focusing bar, the beam splitter and the light absorbing plate are arranged in sequence, and the light absorbing surface of the light absorbing plate faces the first light focusing bar.

[0017] Optionally, the first light-focusing bar and the second light-focusing bar are both cylindrical.

[0018] Optionally, the second linear light source assembly includes a first vertical plate and a second vertical plate that are arranged opposite to each other, a clamping groove is formed between the first vertical plate and the second vertical plate, and the first focusing bar is installed in the clamping groove and clamped by the first vertical plate and the second vertical plate.

[0019] Optionally, the included angle between the mirror surface of the first mirror reflector and the horizontal plane is a, the included angle between the mirror surface of the second mirror reflector and the horizontal plane is b, and b>a.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] In the combined light source device provided by the utility model, the first focusing bar focuses the light emitted by the first linear light source, the second focusing bar focuses the light emitted by the second linear light source, and the second linear light source component uses the first mirror reflector to direct the light emitted by the second linear light source toward the workpiece to be inspected from a direction different from the light emission direction of the first linear light source component, thereby effectively improving the illumination intensity of the workpiece to be inspected, and the surface of the workpiece to be inspected can be more easily detected by the camera in light from different directions.

[0022] The present invention has other characteristics and advantages, which will be apparent from the accompanying drawings and subsequent specific embodiments incorporated herein, or will be described in detail in the accompanying drawings and subsequent specific embodiments incorporated herein, which together are used to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the installation structure of the combined light source device provided by an embodiment of the utility model;

[0025] Figure 2 yes Figure 1 A magnified schematic diagram of position A in the middle.

[0026] Figure numerals: 1. first linear light source assembly; 11. first linear light source; 12. spectroscope; 13. first focusing strip; 14. light absorbing plate; 2. second linear light source assembly; 201. first vertical plate; 202. second vertical plate; 21. second linear light source; 22. second focusing strip; 23. first mirror reflector; 3. third linear light source assembly; 31. third linear light source; 32. third focusing strip; 33. second mirror reflector; 4. mounting plate; 41. camera detection hole. DETAILED DESCRIPTION

[0027] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0028] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0029] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0030] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0031] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0032] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0033] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0034] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0035] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0036] In view of the defects of the existing light source device, the applicant has actively conducted research and innovation based on many years of rich practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theory, in the hope of creating a technology that can solve the defects in the existing technology and make the light source device more practical. After continuous research and design, and repeated trial production and improvement, the present utility model with real practical value was finally created.

[0037] Please refer to Figure 1 and Figure 2 The embodiment of the utility model provides a combined light source device, comprising: a first linear light source assembly 1, comprising a first linear light source 11, a beam splitter 12 and a first focusing bar 13 parallel to the first linear light source 11; the light emitted by the first linear light source 11 is focused by the first focusing bar 13 and then emitted to the beam splitter 12, and then reflected by the beam splitter 12 and then emitted to the workpiece to be detected; a second linear light source assembly 2, comprising a second linear light source 21, a second focusing bar 22 and a first mirror reflector 23; the light emitted by the second linear light source 21 is focused by the second focusing bar 22 and then emitted to the first mirror reflector 23, and then reflected by the first mirror reflector 23 and then emitted to the workpiece to be detected. The illumination area of ​​the first linear light source assembly 1 and the illumination area of ​​the second linear light source assembly 2 at least partially overlap. Optionally, the second focusing bar 22 is parallel to the first focusing bar 13.

[0038] In this embodiment, the first focusing bar 13 is provided on the beam splitter 12 and the first linear light source 11, so that the illuminated area of ​​the first linear light source assembly 1 is more concentrated; in addition, the light emitted by the second linear light source 21 is focused by the second focusing bar 22 and then reflected from the first mirror reflector 23 to the workpiece to be inspected, which not only further improves the illumination intensity of the surface of the workpiece to be inspected, but also enables different light to illuminate the set area of ​​the workpiece to be inspected from different directions, so that the workpiece to be inspected is better illuminated and the defects on the surface of the workpiece to be inspected can be more clearly reflected. The set area of ​​the workpiece to be inspected is the area where visual inspection is required.

[0039] Optionally, the first linear light source 11, the first focusing bar 13 and the beam splitter 12 are arranged in sequence along the first direction; the second linear light source 21, the second focusing bar 22 and the first mirror reflector 23 are arranged in sequence along the second direction. It should be particularly emphasized that the first mirror reflector 23 is tilted so that the light projected by the second linear light source assembly 2 to the workpiece to be inspected and the light projected by the first linear light source assembly 1 to the workpiece to be inspected intersect with each other. It should also be particularly noted that the first mirror reflector 23 can be specifically set according to actual conditions to project the light emitted by the second linear light source 21 onto the surface of the product to be inspected. Preferably, the first direction and the second direction are perpendicular to each other.

[0040] Optionally, the combined light source device further includes a third linear light source assembly 3, which includes a third linear light source 31, a third focusing bar 32, and a second mirror reflector 33; the light emitted by the third linear light source 31 is focused by the third focusing bar 32 and then emitted to the second mirror reflector 33, and then reflected by the second mirror reflector 33 and emitted to the workpiece to be inspected. Specifically, the light emitted by the first linear light source assembly 1, the second linear light source assembly 2, and the third linear light source assembly 3 in this embodiment cross each other and are emitted to the surface of the workpiece to be inspected from three different directions, so that the workpiece to be inspected can be more clearly illuminated, which is conducive to making the surface defects of the workpiece to be inspected more clearly, thereby facilitating the camera to take pictures for inspection.

[0041] Optionally, the second linear light source assembly 2 and the third linear light source assembly 3 are arranged on two opposite sides of the first linear light source assembly 1. Figure 1 As shown, the light emitted by the first linear light source assembly 1 illuminates the workpiece to be inspected vertically downward, the light emitted by the second linear light source assembly 2 illuminates the workpiece to be inspected obliquely downward from the left side of the first linear light source assembly 1, and the light emitted by the third linear light source assembly 3 illuminates the workpiece to be inspected obliquely downward from the right side of the first linear light source assembly 1, thereby better illuminating the workpiece to be inspected.

[0042] Optionally, the combined light source device further comprises a mounting plate 4, the first linear light source assembly 1, the second linear light source assembly 2 and the third linear light source assembly 3 are all mounted on one side of the bottom of the mounting plate 4, and a camera detection hole 41 is provided on the mounting plate 4 corresponding to the spectroscope 12. The camera takes a photo of the workpiece to be inspected through the camera detection hole 41 and the spectroscope 12.

[0043] Optionally, the mirror surface of the first mirror reflector 23 is a plane or a concave arc surface; the mirror surface of the second mirror reflector 33 is a plane or a concave arc surface. Preferably, the mirror surface is a concave arc surface, which is conducive to further improving the illumination intensity.

[0044] Optionally, the first linear light source assembly 1 further includes a light absorbing plate 14, which is mounted on a side of the beam splitter 12 away from the first light focusing bar 13; along the first direction, the first light focusing bar 13, the beam splitter 12 and the light absorbing plate 14 are sequentially arranged, and the light absorbing surface of the light absorbing plate 14 faces the first light focusing bar 13. The light absorbing plate 14 can reduce stray light incident on the camera, thereby facilitating the improvement of imaging accuracy and making the image clearer.

[0045] Optionally, the first light focusing bar 13 and the second light focusing bar 22 are both cylindrical.

[0046] Optionally, the second linear light source assembly 2 includes a first vertical plate 201 and a second vertical plate 202 arranged opposite to each other, a clamping groove is formed between the first vertical plate 201 and the second vertical plate 202, and the first focusing bar 13 is installed in the clamping groove and clamped by the first vertical plate 201 and the second vertical plate 202. Figure 2 As shown, the first vertical plate 201 is provided with a first groove, and the second vertical plate 202 is provided with a second groove. The first groove and the second groove are opposite to each other and clamp the first focusing strip 13 together.

[0047] Optionally, the angle between the mirror surface of the first mirror reflector 23 and the horizontal plane is a, the angle between the mirror surface of the second mirror reflector 33 and the horizontal plane is b, and b>a, so that the second linear light source assembly 2 and the third linear light source assembly 3 can jointly illuminate the set area of ​​the workpiece to be inspected. Specifically, the specific values ​​of a and b should be determined according to the actual structure.

[0048] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A combined light source device, characterized in that: include: A first linear light source assembly (1) comprises a first linear light source (11), a beam splitter (12), and a first light focusing bar (13) parallel to the first linear light source (11); light emitted by the first linear light source (11) is focused by the first light focusing bar (13) and then emitted to the beam splitter (12), and is reflected by the beam splitter (12) and emitted to a workpiece to be inspected; A second linear light source assembly (2) comprises a second linear light source (21), a second light focusing bar (22) and a first mirror reflector (23), wherein light emitted by the second linear light source (21) is focused by the second light focusing bar (22) and then emitted to the first mirror reflector (23), and is reflected by the first mirror reflector (23) and emitted to a workpiece to be inspected; The lighting area of ​​the first linear light source assembly (1) and the lighting area of ​​the second linear light source assembly (2) at least partially overlap.

2. The combined light source device according to claim 1, characterized in that: The first linear light source (11), the first light focusing strip (13) and the beam splitter (12) are arranged in sequence along a first direction; and the second linear light source (21), the second light focusing strip (22) and the first mirror reflector (23) are arranged in sequence along a second direction.

3. The combined light source device according to claim 1, characterized in that: The invention also comprises a third linear light source assembly (3), wherein the third linear light source assembly (3) comprises a third linear light source (31), a third light focusing bar (32) and a second mirror reflector (33); light emitted by the third linear light source (31) is focused by the third light focusing bar (32) and then emitted to the second mirror reflector (33), and then reflected by the second mirror reflector (33) and emitted to the workpiece to be inspected.

4. The combined light source device according to claim 3, characterized in that: The second linear light source assembly (2) and the third linear light source assembly (3) are arranged on two opposite sides of the first linear light source assembly (1).

5. The combined light source device according to claim 3, characterized in that: It also comprises a mounting plate (4), wherein the first linear light source assembly (1), the second linear light source assembly (2) and the third linear light source assembly (3) are all mounted on one side of the bottom of the mounting plate (4), and a camera detection hole (41) is provided on the mounting plate (4) corresponding to the beam splitter (12).

6. The combined light source device according to claim 3, characterized in that: The mirror surface of the first mirror reflector (23) is a plane or a concave arc surface; the mirror surface of the second mirror reflector (33) is a plane or a concave arc surface.

7. The combined light source device according to claim 2, characterized in that: The first linear light source assembly (1) further comprises a light absorbing plate (14), the light absorbing plate (14) being mounted on a side of the beam splitter (12) away from the first light focusing bar (13); along the first direction, the first light focusing bar (13), the beam splitter (12) and the light absorbing plate (14) are arranged in sequence, and a light absorbing surface of the light absorbing plate (14) faces the first light focusing bar (13).

8. The combined light source device according to claim 1, characterized in that: The first light focusing strip (13) and the second light focusing strip (22) are both cylindrical.

9. The combined light source device according to claim 1, characterized in that: The second linear light source assembly (2) comprises a first vertical plate (201) and a second vertical plate (202) which are arranged opposite to each other, a clamping groove is formed between the first vertical plate (201) and the second vertical plate (202), and the first focusing strip (13) is installed in the clamping groove and is clamped by the first vertical plate (201) and the second vertical plate (202) facing each other.

10. The combined light source device according to claim 3, characterized in that: The included angle between the mirror surface of the first mirror reflector (23) and the horizontal plane is a, the included angle between the mirror surface of the second mirror reflector (33) and the horizontal plane is b, and b>a.

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