Stripe light source with adjustable light spot width

Abstract

The utility model relates to the field of light source structures, and discloses a stripe light source with adjustable light spot width. The first distance adjusting devices are arranged on the light emitting side of the light emitting assembly, and the multiple sets of first distance adjusting devices are arranged at intervals; the first distance adjusting device comprises a shading adjusting plate, a rotating shaft fixedly connected with the shading adjusting plate and a rotation driving device used for driving the rotating shaft to rotate. A light emitting gap is formed between every two adjacent shading adjusting plates, and the shading adjusting plates can rotate around the rotating shaft so as to change the width of the light emitting gaps. According to the stripe light source with the adjustable light spot width, the distance between every two adjacent light spots can be adjusted by adjusting the light spot width, and the application range of the stripe light source with the adjustable light spot width is widened.

Description

Technical Field

[0001] This utility model relates to the field of light source structure, and in particular to a striped light source with adjustable spot width. Background Technology

[0002] In the field of machine vision lighting, striped light sources are used to detect scratches and cracks on the appearance of products.

[0003] A typical striped light source can only present a specific lighting effect, that is, the distance between two adjacent light spots is fixed and cannot be adjusted. This makes striped light sources applicable only to fixed scenes, and therefore has a limited range of applications.

[0004] Therefore, it is necessary to design a striped light source with adjustable spot width, which can adjust the distance between two adjacent spots by adjusting the spot width.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides a striped light source with adjustable spot width, which can adjust the distance between two adjacent spots by adjusting the spot width.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A striped light source with adjustable spot width, comprising:

[0009] Light emission components;

[0010] The first adjustment device is disposed on the light-emitting side of the light-emitting component, and several sets are arranged at intervals; the first adjustment device includes a light-shielding adjustment plate, a rotating shaft fixedly connected to the light-shielding adjustment plate, and a rotation drive device for driving the rotating shaft to rotate.

[0011] There is a light-emitting gap between two adjacent light-shielding adjustment plates, and the light-shielding adjustment plates can rotate around the pivot to change the width of the light-emitting gap.

[0012] Optionally, the striped light source with adjustable spot width further includes a second adjustment device. The second adjustment device has the same structure as the first adjustment device. The rotating shafts in the first adjustment device and the second adjustment device are parallel to each other, and the center lines of the rotating shafts in the first adjustment device and the second adjustment device are on the same horizontal plane.

[0013] One second adjustment device is installed in each of two adjacent first adjustment devices, and one first adjustment device is installed in each of two adjacent second adjustment devices.

[0014] Optionally, the tilt angle of the light-shielding adjustment plate in all the first adjustment devices is the same, and the tilt angle of the light-shielding adjustment plate in all the second adjustment devices is the same.

[0015] Optionally, the light-emitting component includes a circuit board and a plurality of groups of LED beads mounted on the circuit board;

[0016] The arrangement direction of the LEDs in the same LED group is parallel to the rotating shaft.

[0017] Optionally, the number of the first adjusting devices is N, and the number of the lamp bead groups is 2N groups, where N is a positive integer;

[0018] A set of LED beads is arranged directly below the light-shielding adjustment plate.

[0019] Optionally, the light-emitting assembly includes a parallel light-emitting unit and a housing for supporting the parallel light-emitting unit;

[0020] The light emission direction of the parallel light emission unit is perpendicular to the rotating shaft.

[0021] Optionally, the rotation drive device is a servo motor.

[0022] Optionally, both opposite surfaces of the light-shielding adjustment plate are coated with a light-shielding layer.

[0023] Optionally, the light-shielding adjustment plate is a rectangular plate, and the long side of the rectangular plate is parallel to the rotating shaft.

[0024] Optionally, the length of the shorter side of the rectangular plate is less than the distance between two adjacent rotating shafts.

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

[0026] The adjustable stripe light source provided by this utility model can drive the rotating shaft to rotate to different angles through a rotating drive device, thereby tilting the light-shielding adjustment plate to different angles. Tilting the light-shielding adjustment plate to different angles will change the width of the light-emitting gap between two adjacent light-shielding adjustment plates, and change the width of the stripe light spot emitted from the light-emitting gap, thus achieving the effect of adjusting the distance between two adjacent light spots and making the light emission effect more diverse.

[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] Figure 1 This is a top view schematic diagram of the striped light source with adjustable spot width provided in an embodiment of this utility model;

[0030] Figure 2 This is the book Figure 1 A schematic diagram of the AA cross-sectional structure of a striped light source with adjustable spot width;

[0031] Figure 3 This is a three-dimensional structural diagram of the striped light source with adjustable spot width provided in an embodiment of this utility model.

[0032] Reference numerals: 1. Light-emitting assembly; 11. Circuit board; 12. Lamp bead group; 2. First adjustment device; 22. Rotating shaft; 21. Light-shielding adjustment plate; 23. Rotation drive device; 3. Second adjustment device. 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 striped 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, actively conducted research and innovation in order to create a technology that could overcome the defects in the existing technology, making the striped light source with adjustable spot width more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value was finally created.

[0043] Please refer to Figures 1 to 3 This utility model provides a striped light source with adjustable spot width, including a light-emitting component 1 and a first adjustment device 2.

[0044] The light-emitting component 1 is used to emit light to the first adjusting device 2. The first adjusting device 2 is arranged on the light-emitting side of the light-emitting component 1, and several sets are arranged at intervals. The first adjusting device 2 includes a light-shielding adjustment plate 21, a rotating shaft 22 fixedly connected to the light-shielding adjustment plate 21, and a rotation drive device 23 for driving the rotating shaft 22 to rotate. There is a light-emitting gap between two adjacent light-shielding adjustment plates 21, and the light-shielding adjustment plate 21 can rotate around the rotating shaft 22 to change the width of the light-emitting gap.

[0045] In this embodiment, the striped light source with adjustable spot width can be driven by the rotation drive device 23 to rotate the rotating shaft 22 to different angles, thereby tilting the light-shielding adjustment plate 21 to different angles. Tilting the light-shielding adjustment plate to different angles will change the width of the light-emitting gap between two adjacent light-shielding adjustment plates 21, and change the width of the striped light spot emitted from the light-emitting gap, thus achieving the effect of adjusting the distance between two adjacent light spots and making the light emission effect more diverse.

[0046] like Figure 2 When the light-shielding adjustment plate 21 is in a vertical position, the width of the striped light spot is the largest, and the projection of the rotating shaft 22 becomes the dark stripe in the striped projection, while the striped light spot becomes the bright stripe in the striped projection. When the light-shielding adjustment plate 21 is in a horizontal position, the width of the striped light spot is the smallest.

[0047] Optionally, the striped light source with adjustable spot width also includes a second adjusting device 3. The second adjusting device 3 has the same structure as the first adjusting device 2. The rotating shaft 22 in the first adjusting device 2 and the rotating shaft 22 in the second adjusting device 3 are parallel to each other, and the center line of the rotating shaft 22 in the first adjusting device 2 and the center line of the rotating shaft 22 in the second adjusting device 3 are on the same horizontal plane. A second adjusting device 3 is installed in two adjacent first adjusting devices 2, and a first adjusting device 2 is installed in two adjacent second adjusting devices 3.

[0048] It should also be noted that the rotation angle of each light-shielding adjustment plate 21 can be adjusted individually to create a projection illumination effect with unequal gap stripes. In this embodiment, the rotating shaft 22 can drive the corresponding light-shielding adjustment plate 21 to rotate 360°.

[0049] Optionally, the tilt angles of the light-shielding adjustment plates 21 in all the first adjustment devices 2 are the same, and the tilt angles of the light-shielding adjustment plates 21 in all the second adjustment devices 3 are the same. In this embodiment, the light-shielding adjustment plates 21 in the first adjustment devices 2 rotate synchronously, and the light-shielding adjustment plates 21 in the second adjustment devices 3 rotate synchronously, so that the stripe projection changes periodically, thereby better meeting the needs of detecting surface defects of the workpiece.

[0050] Optionally, the light-emitting assembly 1 includes a circuit board 11 and several groups of LED beads 12 mounted on the circuit board 11; the arrangement direction of the LED beads in the same LED bead group 12 is parallel to the rotating shaft 22.

[0051] Optionally, the number of first adjusting devices 2 is N, and the number of LED bead groups 12 is 2N groups, where N is a positive integer; a group of LED bead groups 12 is arranged directly below the light-shielding adjusting plate 21. That is, the light-shielding adjusting plate 21 is as follows: Figure 2 When in a horizontal position, it can block the light emitted by at least one row of LED beads 12.

[0052] Optionally, the light-emitting assembly 1 includes a parallel light-emitting unit and a housing for supporting the parallel light-emitting unit; the housing serves to protect the parallel light-emitting unit. The light-emitting direction of the parallel light-emitting unit is perpendicular to the rotation axis 22, which makes the projected striped light spots and striped shadows clearer.

[0053] Optionally, the rotation drive 23 is a servo motor. A servo motor can more precisely adjust the rotation angle of the light-shielding adjustment plate 21.

[0054] Optionally, the opposing surfaces of the light-shielding adjustment plate 21 are coated with a light-shielding layer to absorb light directly hitting the light-shielding adjustment plate 21.

[0055] Optionally, the light-shielding adjustment plate 21 is a rectangular plate, and the long side of the rectangular plate is parallel to the rotation axis 22.

[0056] Optionally, the length of the shorter side of the rectangular plate is less than the distance between two adjacent pivots 22.

[0057] 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 striped light source with adjustable spot width, characterized in that, include: Light-emitting component (1); The first adjustment device (2) is disposed on the light-emitting side of the light-emitting component (1), and several sets are arranged at intervals; the first adjustment device (2) includes a light-shielding adjustment plate (21), a rotating shaft (22) fixedly connected to the light-shielding adjustment plate (21), and a rotation drive device (23) for driving the rotating shaft (22) to rotate. There is a light-emitting gap between two adjacent light-shielding adjustment plates (21), and the light-shielding adjustment plate (21) can rotate around the rotating shaft (22) to change the width of the light-emitting gap.

2. The striped light source with adjustable spot width according to claim 1, characterized in that, It also includes a second adjusting device (3), which has the same structure as the first adjusting device (2). The rotating shaft (22) in the first adjusting device (2) and the rotating shaft (22) in the second adjusting device (3) are parallel to each other, and the center line of the rotating shaft (22) in the first adjusting device (2) and the center line of the rotating shaft (22) in the second adjusting device (3) are on the same horizontal plane. One second adjustment device (3) is installed in each of two adjacent first adjustment devices (2), and one first adjustment device (2) is installed in each of two adjacent second adjustment devices (3).

3. The striped light source with adjustable spot width according to claim 2, characterized in that, The tilt angles of the light-shielding adjustment plates (21) in all the first adjustment devices (2) are the same, and the tilt angles of the light-shielding adjustment plates (21) in all the second adjustment devices (3) are the same.

4. The striped light source with adjustable spot width according to claim 1, characterized in that, The light-emitting component (1) includes a circuit board (11) and a plurality of groups of LED beads (12) mounted on the circuit board (11); The arrangement direction of the LEDs in the same LED group (12) is parallel to the rotating shaft (22).

5. The striped light source with adjustable spot width according to claim 4, characterized in that, The number of the first adjusting device (2) is N, and the number of the lamp bead groups (12) is 2N groups, where N is a positive integer; A set of LED beads (12) is arranged directly below the light-shielding adjustment plate (21).

6. The striped light source with adjustable spot width according to claim 1, characterized in that, The light-emitting assembly (1) includes a parallel light-emitting unit and a housing for supporting the parallel light-emitting unit; The light emission direction of the parallel light emission unit is perpendicular to the rotating shaft (22).

7. The striped light source with adjustable spot width according to claim 1, characterized in that, The rotary drive device (23) is a servo motor.

8. The striped light source with adjustable spot width according to claim 1, characterized in that, The light-shielding adjustment plate (21) has a light-shielding layer on both opposite sides.

9. The striped light source with adjustable spot width according to claim 1, characterized in that, The light-shielding adjustment plate (21) is a rectangular plate, and the long side of the rectangular plate is parallel to the rotating shaft (22).

10. The striped light source with adjustable spot width according to claim 9, characterized in that, The length of the short side of the rectangular plate is less than the distance between two adjacent rotating shafts (22).

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