Detection light source

Abstract

The utility model relates to the field of lighting devices, and discloses a detection light source which comprises a coaxial light source and a reflecting mirror installed on the light emitting side of the coaxial light source. The reflector is used for reflecting light emitted by the coaxial light source to the surface of a workpiece to be detected; the reflecting mirror comprises a first reflecting surface and a second reflecting surface which are symmetrically arranged along a vertical symmetric surface, and an included angle between the first reflecting surface and the second reflecting surface is greater than 180 degrees; the light-emitting center line of the coaxial light source is located on the vertical symmetry plane. The detection light source provided by the utility model can effectively improve the illumination uniformity of a coaxial light source on a workpiece.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighting device field, especially a kind of detection light source. BACKGROUND

[0002] Machine vision is widely used in industrial production and manufacturing field, and is mainly used for product quality detection, production process control, environment perception and the like.Detection light source includes coaxial light source, linear light source, parallel light source and the like.

[0003] The current coaxial light source, light emitting element is LED lamp bead, the light of LED lamp bead is projected on product surface after passing through light splitter.But LED lamp bead has the illumination characteristic that the brightness of center position of illumination area is higher than the brightness of side position, so that the illumination brightness of center part of coaxial light source illumination area is a little brighter than side, and illumination uniformity is relatively poor.

[0004] Therefore, it is necessary to design a detection light source that can effectively improve the illumination uniformity of the coaxial light source irradiated on the workpiece.

[0005] The above information is given as background information only to assist in understanding the present disclosure, and does not determine or acknowledge whether any of the above content can be used as prior art with respect to the present disclosure. UTILITY MODEL CONTENT

[0006] The utility model provides a kind of detection light source, can effectively improve the illumination uniformity of the coaxial light source irradiated on the workpiece.

[0007] To achieve the above purpose, the utility model provides the following technical scheme:

[0008] A kind of detection light source, including coaxial light source and the reflector of the light emitting side of the coaxial light source;The reflector is used to reflect the light of the coaxial light source to the surface of the workpiece to be detected;

[0009] The reflector includes first reflective surface and second reflective surface symmetrically arranged along vertical symmetry plane, and the included angle of the first reflective surface and the second reflective surface is greater than 180°;

[0010] The light emitting center line of the coaxial light source is located on the vertical symmetry plane.

[0011] Optionally, the coaxial light source includes shell, lamp plate installed in the shell and light splitter installed on the light emitting side of the lamp plate;

[0012] The light emitting port of the shell is towards the reflector, and the center line of the light emitting port coincides with the light emitting center line.

[0013] Optionally, the lamp plate includes circuit board and patch lamp bead installed on the circuit board;

[0014] A diffuser plate is installed between the lamp panel and the beam splitter.

[0015] Optionally, the housing has a camera detection port, which is located on the top side of the beam splitter and extends through the housing;

[0016] An intensifying lens is installed in the camera detection port, and a light-absorbing plate is installed on one side of the bottom of the beam splitter.

[0017] Optionally, the top wall plate of the housing is provided with an insertion slot for inserting the beam splitter;

[0018] The housing is also provided with a support groove for supporting the beam splitter. The beam splitter can be inserted into the support groove along the insertion through groove, and the top of the beam splitter is in contact with the groove wall of the insertion through groove.

[0019] Optionally, the top wall plate of the housing has a pressing groove that communicates with the insertion slot, and a pressing block is installed in the pressing groove to press and position the beam splitter.

[0020] Optionally, the clamping block has a V-groove for matching the beam splitter, and the V-groove opening faces downward;

[0021] The clamping block is an elastic block.

[0022] Optionally, the housing has a heat dissipation section, and the lamp plate is mounted on the heat dissipation section by connecting bolts;

[0023] The distance between the lamp panel and the heat dissipation unit is adjustable.

[0024] Optionally, the angle between the first reflective surface and the second reflective surface is not greater than 190°.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The detection light source provided by this utility model reflects the light emitted from the coaxial light source onto the surface of the workpiece by setting a reflector. The reflector includes a first reflective surface and a second reflective surface that are symmetrical about a vertical symmetry plane. The light emission center line of the coaxial light source is located on the vertical symmetry plane, so that the light emitted from the center of the coaxial light source, which is relatively concentrated, can be dispersed to the side of the workpiece, thereby effectively improving the uniformity of illumination on the workpiece.

[0027] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0028] 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.

[0029] Fig. 1 This is a schematic diagram of the installation structure of the detection light source provided in an embodiment of the present utility model;

[0030] Fig. 2 This is a bottom-view schematic diagram of the detection light source provided in this embodiment of the utility model;

[0031] Fig. 3 This is a schematic diagram of the cross-sectional structure of the reflector provided in an embodiment of this utility model.

[0032] Reference numerals: 100, coaxial light source; 101, insertion slot; 102, support slot; 103, pressing groove; 110, housing; 120, lamp board; 121, circuit board; 122, surface mount LED; 130, beam splitter; 140, diffuser plate; 150, lens enhancer; 160, light absorber plate; 170, heat dissipation unit; 180, connecting bolt; 200, reflector; 201, first reflective surface; 202, second reflective surface; 300, vertical symmetry plane. Detailed Implementation

[0033] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0034] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0035] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0036] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0037] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0038] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0039] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0040] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0041] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0042] In view of the aforementioned defects in existing coaxial light sources, the applicant, based on years of extensive practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, has actively conducted research and innovation in order to create a technology that can overcome the defects in the existing technology and make the detection light source more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value has finally been created.

[0043] Please refer to Figs. 1 to 3 This utility model embodiment provides a detection light source, including a coaxial light source 100 and a reflector 200 mounted on the light-emitting side of the coaxial light source 100. The reflector 200 is used to reflect the light emitted from the coaxial light source 100 onto the surface of the workpiece to be inspected. The reflector 200 includes a first reflective surface 201 and a second reflective surface 202 symmetrically arranged along a vertical plane of symmetry 300, and the included angle between the first reflective surface 201 and the second reflective surface 202 is greater than 180°. The light-emitting center line of the coaxial light source 100 is located on the vertical plane of symmetry 300. The light-emitting center line refers to the center line of the light-emitting range; for example, the light-emitting center line of a flashlight is the center line of the cone-shaped illumination range in space.

[0044] It should be noted that the light emission effect of the LED beads in the coaxial light source 100 is roughly conical. The brightness is highest at the center of the illumination area of ​​an LED bead, decreasing further away from the center. Therefore, the light emission effect of the coaxial light source 100 also shows that the brightness is higher at the center of the illumination area and lower on the sides. In this embodiment, by making the angle between the first reflective surface 201 and the second reflective surface 202 greater than 180°, the relatively concentrated light emitted from the coaxial light source 100 in the center can be more dispersed to the sides of the workpiece, resulting in more uniform illumination.

[0045] Preferably, the included angle between the first reflective surface 201 and the second reflective surface 202 is no greater than 190°. Specifically, the included angle between the first reflective surface 201 and the second reflective surface 202 is 185±2°.

[0046] Optionally, the coaxial light source 100 includes a housing 110, a lamp plate 120 mounted in the housing 110, and a beam splitter 130 mounted on the light-emitting side of the lamp plate 120; the light-emitting port of the housing 110 faces the reflector 200, and the center line of the light-emitting port coincides with the light-emitting center line. The cross-section of the light-emitting port is circular.

[0047] The light emitted from the lamp panel 120 passes through the beam splitter 130 and then shines on the reflector 200. The first reflector 201 and the second reflector 202 then reflect the light onto the surface of the workpiece, achieving the effect of moderately dispersing the relatively concentrated light emitted from the coaxial light source in the center.

[0048] Optionally, the lamp board 120 includes a circuit board 121 and surface mount LEDs 122 mounted on the circuit board 121; a diffuser 140 is installed between the lamp board 120 and the beam splitter 130.

[0049] Optionally, the housing 110 has a camera inspection port located on the top side of the beam splitter 130 and extending through the housing 110; an intensifying lens 150 is installed in the camera inspection port, and a light-absorbing plate 160 is installed on the bottom side of the beam splitter 130. The inspection camera can take pictures of the workpiece for inspection through the camera inspection port.

[0050] Optionally, the top wall of the housing 110 is provided with an insertion slot 101 for inserting the beam splitter 130; the housing 110 is also provided with a support slot 102 for supporting the beam splitter 130, the beam splitter 130 can be inserted into the support slot 102 along the insertion slot 101, and the top of the beam splitter 130 fits against the slot wall of the insertion slot 101.

[0051] Specifically, the beam splitter 130 is directly inserted into the support slot 102 from the insertion slot 101, making installation more convenient.

[0052] Optionally, the top wall plate of the housing 110 has a pressing groove 103 that connects to the insertion slot 101. A pressing block is installed in the pressing groove 103 to press and position the beam splitter 130. The pressing block (not shown) presses and fixes the beam splitter 130 to prevent the beam splitter 130 from shifting during use.

[0053] Optionally, the clamping block has a V-groove for matching the beam splitter 130, with the V-groove opening facing downwards; the clamping block is an elastic block. Specifically, the top corner of the beam splitter 130 is embedded in the V-groove, thereby completely fixing the beam splitter 130. Furthermore, the clamping block being an elastic block also allows the V-groove to better fit the top corner of the beam splitter 130.

[0054] Optionally, the housing 110 has a heat dissipation section 170, and the lamp plate 120 is mounted on the heat dissipation section 170 by connecting bolts 180; the distance between the lamp plate 120 and the heat dissipation section 170 is adjustable. The heat dissipation section 170 serves to dissipate heat and reduce the internal temperature of the housing 110.

[0055] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A detection light source, characterized in that, It includes a coaxial light source (100) and a reflector (200) mounted on the light-emitting side of the coaxial light source (100); the reflector (200) is used to reflect the light emitted from the coaxial light source (100) onto the surface of the workpiece to be inspected; The reflector (200) includes a first reflective surface (201) and a second reflective surface (202) symmetrically arranged along a vertical plane of symmetry (300), and the included angle between the first reflective surface (201) and the second reflective surface (202) is greater than 180°; The light-emitting center line of the coaxial light source (100) is located on the vertical symmetry plane (300).

2. The detection light source according to claim 1, characterized in that, The coaxial light source (100) includes a housing (110), a lamp plate (120) installed in the housing (110), and a beam splitter (130) installed on the light-emitting side of the lamp plate (120); The light outlet of the housing (110) faces the reflector (200), and the center line of the light outlet coincides with the light outlet center line.

3. The detection light source according to claim 2, characterized in that, The lamp board (120) includes a circuit board (121) and surface mount LEDs (122) mounted on the circuit board (121); A diffuser plate (140) is installed between the lamp panel (120) and the beam splitter (130).

4. The detection light source according to claim 2, characterized in that, The housing (110) has a camera detection port, which is located on the top side of the beam splitter (130) and extends through the housing (110); An intensifying lens (150) is installed in the camera detection port, and a light-absorbing plate (160) is installed on one side of the bottom of the beam splitter (130).

5. The detection light source according to claim 2, characterized in that, The top wall plate of the housing (110) is provided with an insertion slot (101) for inserting the beam splitter (130); The housing (110) is also provided with a support groove (102) for supporting the beam splitter (130). The beam splitter (130) can be inserted into the support groove (102) along the insertion through groove (101), and the top of the beam splitter (130) is attached to the groove wall of the insertion through groove (101).

6. The detection light source according to claim 5, characterized in that, The top wall plate of the housing (110) is provided with a pressing groove (103) that communicates with the insertion through slot (101), and a pressing block is installed in the pressing groove (103) to press and position the beam splitter (130).

7. The detection light source according to claim 6, characterized in that, The clamping block has a V-shaped groove for matching the beam splitter (130), and the opening of the V-shaped groove faces downward; The clamping block is an elastic block.

8. The detection light source according to claim 2, characterized in that, The housing (110) has a heat dissipation part (170), and the lamp plate (120) is mounted on the heat dissipation part (170) by connecting bolts (180); The distance between the lamp panel (120) and the heat dissipation part (170) is adjustable.

9. The detection light source according to claim 3, characterized in that, The angle between the first reflective surface (201) and the second reflective surface (202) is no greater than 190°.

Images