Common-path parallel coaxial combined light source

Abstract

This utility model discloses a common-path parallel-coaxial combined light source, relating to the field of detection light source technology. The common-path parallel-coaxial combined light source includes a housing, a beam splitter, light-emitting elements, and a light-blocking plate. The housing has a first opening, a second opening, and a receiving cavity. The beam splitter is located between the first and second openings, and is respectively positioned opposite to the first and second openings. Multiple light-emitting elements are detachably mounted on the bottom wall of the receiving cavity, arranged sequentially at intervals along a second horizontal direction, and all facing the beam splitter. The first and second horizontal directions are perpendicular to each other. The light-blocking plate is disposed within the receiving cavity, located between two adjacent light-emitting elements. The number of light-emitting elements can be increased or decreased according to detection requirements to accommodate workpieces of different lengths. Furthermore, when a light-emitting element is damaged, it can be directly removed from the bottom wall of the receiving cavity for convenient replacement and repair.

Description

Technical Field

[0001] This utility model relates to the field of detection light source technology, and in particular to a common optical path parallel coaxial combined light source. Background Technology

[0002] In machine vision systems, it is usually necessary to use a light source to illuminate the product when inspecting its appearance. Among them, parallel coaxial light sources are the most common.

[0003] When performing visual inspection on large objects, conventional length parallel coaxial light sources often cannot meet the illumination requirements due to the excessive lateral distance of these objects. To meet the needs of visual inspection of large objects, the conventional approach is to proportionally increase the size of the LED array of the parallel coaxial light source. However, parallel coaxial light sources with large LED arrays are often only suitable for large objects. When inspecting smaller objects, their adaptability is poor. Furthermore, because large parallel coaxial light sources have a large overall structure, if a part of the large LED array is damaged, the entire large LED array needs to be removed, making repair difficult. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a common optical path parallel coaxial combined light source, which can be adapted to workpieces of different lengths and is more convenient for subsequent replacement and maintenance.

[0005] To achieve the above objectives, this utility model provides a common-path parallel-coaxial combined light source, which includes a housing, a beam splitter, light-emitting elements, and a light-blocking plate. The housing has a first opening, a second opening, and a receiving cavity. The first and second openings are respectively disposed on opposite side walls of the housing along a first horizontal direction. The first and second openings are opposite to each other and both communicate with the receiving cavity. The beam splitter is obliquely disposed within the receiving cavity and located between the first and second openings. The beam splitter is respectively opposite to the first and second openings. Multiple light-emitting elements are provided. The multiple light-emitting elements are detachably disposed on the bottom wall of the receiving cavity and arranged sequentially at intervals along a second horizontal direction, all facing the beam splitter. The first and second horizontal directions are perpendicular to each other. At least one light-blocking plate is provided. The light-blocking plate is disposed within the receiving cavity and located between two adjacent light-emitting elements.

[0006] Furthermore, a third opening is provided on the bottom wall of the outer shell; multiple third openings are provided and are arranged at intervals along the second horizontal direction, and each is connected to the receiving cavity; multiple light-emitting elements are detachably disposed at multiple third openings.

[0007] Furthermore, the light-emitting element includes a cylindrical body, a base, a connecting structure, and a light-emitting structure; the cylindrical body is disposed at the third opening; the cylindrical body is disposed vertically through the cylindrical body, the base is detachably inserted into the cylindrical body, and the connecting structure detachably connects the cylindrical body and the base; the light-emitting structure is disposed at the top of the base.

[0008] Furthermore, the cylindrical body is movably disposed at the third opening, and a first annular protrusion is provided on the circumferential side of the top end of the cylindrical body. The first annular protrusion is located inside the receiving cavity and is vertically opposite to the bottom wall of the receiving cavity. The seat body is movably disposed inside the cylindrical body, and a second annular protrusion is provided on the circumferential side of the bottom end of the seat body. The second annular protrusion is located outside the receiving cavity and is vertically opposite to the outer bottom wall of the outer shell.

[0009] Furthermore, it also includes Fresnel lenses; multiple Fresnel lenses are provided, all of which are disposed within the receiving cavity; the multiple Fresnel lenses are respectively located between the beam splitter and the multiple light-emitting elements.

[0010] Furthermore, it also includes an intensifying lens; the intensifying lens is disposed over the second opening.

[0011] Furthermore, the outer shell includes a first side plate, a second side plate, a top plate, and a bottom plate; the top plate and the bottom plate are arranged opposite to each other and spaced apart in the vertical direction; there are two first side plates and two second side plates; the two first side plates are arranged opposite to each other and spaced apart in the first horizontal direction, and are respectively connected to the top plate and the bottom plate; the two second side plates are arranged opposite to each other and spaced apart in the second horizontal direction, and are respectively connected to the top plate and the bottom plate; the side ends of the two first side plates are respectively connected to the side ends of the two second side plates.

[0012] Furthermore, it also includes a control component; the control component is connected to the housing and electrically connected to the plurality of light-emitting elements; the control component is capable of controlling the on / off state and brightness of the light-emitting elements.

[0013] Furthermore, there are two light-emitting elements and one light-blocking plate; the two light-emitting elements are arranged at intervals along the second horizontal direction, and the light-blocking plate is disposed between the two light-emitting elements.

[0014] Furthermore, the receiving cavity is provided with mounting grooves on its two opposite inner sidewalls along the second horizontal direction, and the mounting grooves extend in an inclined direction; the two ends of the beam splitter along the second horizontal direction are respectively disposed in the two mounting grooves.

[0015] Compared with the prior art, the present invention has the following advantages: In the embodiment of the present invention, the workpiece to be inspected can be placed on one side of the first opening, and the camera inspection module can be placed on one side of the second opening. The first and second openings are arranged opposite to each other in the first horizontal direction, so that the camera inspection module can inspect the workpiece to be inspected. The inclined beam splitter is located between the first and second openings, and the beam splitter is arranged opposite to the first and second openings, so that the light emitted by the multiple light-emitting elements facing the beam splitter can be irradiated on the beam splitter. The beam splitter can reflect the light emitted by the light-emitting elements from the first opening to the workpiece to be inspected, thereby irradiating the workpiece to be inspected. A light-blocking plate is provided between adjacent light-emitting elements to reduce the cross interference of light from adjacent light-emitting elements, improve the uniformity of illumination, and ensure the illumination effect. Since multiple light-emitting elements are irradiated on the same beam splitter, and multiple light-emitting elements are detachably arranged on the bottom wall of the receiving cavity, the number of light-emitting elements can be increased or decreased according to the detection requirements to adapt to workpieces of different lengths. When a light-emitting element is damaged, it can be directly removed from the bottom wall of the receiving cavity for easy replacement and repair. Attached Figure Description

[0016] To more clearly illustrate the technology 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the common optical path parallel coaxial combined light source of this utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the common optical path parallel coaxial combined light source of this utility model from another perspective;

[0019] Figure 3 This is a cross-sectional view of the common-path parallel-coaxial combined light source of this utility model;

[0020] Figure 4 This is a schematic diagram of the light-emitting element of the common-path parallel-coaxial combined light source of this utility model;

[0021] Figure 5This is a cross-sectional view of the housing of the common-path parallel-coaxial combined light source of this utility model.

[0022] Reference numerals: outer shell 100; first opening 101; second opening 102; third opening 103; receiving cavity 104; mounting groove 105; first side plate 110; second side plate 120; top plate 130; bottom plate 140; beam splitter 200; light-emitting element 300; cylinder 310; first annular boss 311; base 320; second annular boss 321; connecting structure 330; light-emitting structure 340; light-blocking plate 400; Fresnel lens 500; intensifying lens 600. Detailed Implementation

[0023] The technology of this embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is one embodiment of the present invention, and not all embodiments thereof. Based on this embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0025] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second", such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0026] Please see Figures 1 to 5This utility model provides a common-path parallel-coaxial combined light source, which includes a housing 100, a beam splitter 200, a light-emitting element 300, and a light-blocking plate 400. The housing 100 is provided with a first opening 101, a second opening 102, and a receiving cavity 104. The first opening 101 and the second opening 102 are respectively disposed on opposite side walls of the housing 100 along a first horizontal direction. The first opening 101 and the second opening 102 are disposed opposite each other and are both connected to the receiving cavity 104. The beam splitter 200 is inclinedly disposed in the receiving cavity 104. The cavity 104 is located between the first opening 101 and the second opening 102. The beam splitter 200 is respectively disposed opposite to the first opening 101 and the second opening 102. Multiple light-emitting elements 300 are disposed. Multiple light-emitting elements 300 are detachably disposed on the bottom wall of the cavity 104 and are arranged sequentially at intervals along the second horizontal direction, and all are disposed facing the beam splitter 200. The first horizontal direction and the second horizontal direction are perpendicular to each other. At least one light-blocking plate 400 is disposed. The light-blocking plate 400 is disposed in the cavity 104 and is located between two adjacent light-emitting elements 300.

[0027] In this embodiment of the invention, the workpiece to be inspected can be placed on one side of the first opening 101, and the camera detection module can be placed on one side of the second opening 102. The first opening 101 and the second opening 102 are arranged opposite to each other in the first horizontal direction, so that the camera detection module can inspect the workpiece to be inspected. The inclined beam splitter 200 is located between the first opening 101 and the second opening 102, and the beam splitter 200 is arranged opposite to the first opening 101 and the second opening 102, so that the light emitted by the plurality of light-emitting elements 300 toward the beam splitter 200 can be irradiated onto the beam splitter 200. The beam splitter 200 can redirect the light emitted by the light-emitting elements 300 from the first opening 101 to the second opening 102. The first opening 101 reflects light onto the workpiece to be inspected, thus illuminating the workpiece. A light-blocking plate 400 is provided between adjacent light-emitting elements 300 to reduce the influence between adjacent light-emitting elements 300 and ensure the illumination effect. Since multiple light-emitting components illuminate the same beam splitter 200, and multiple light-emitting elements 300 are detachably mounted on the bottom wall of the receiving cavity 104, the number of light-emitting elements 300 can be increased or decreased according to the inspection requirements to accommodate workpieces of different lengths. When a light-emitting element 300 is damaged, it can be directly removed from the bottom wall of the receiving cavity 104 for easy replacement and maintenance.

[0028] Specifically, the number of light-emitting elements 300 is one more than the number of light-blocking plates 400.

[0029] Specifically, the light-emitting structure is an LED light source array.

[0030] Reference Figure 5In some embodiments of this utility model, a third opening 103 is provided on the bottom wall of the outer shell 100; multiple third openings 103 are provided and are arranged sequentially at intervals along the second horizontal direction, and are all connected to the receiving cavity 104; multiple light-emitting elements 300 are detachably disposed at multiple third openings 103 respectively.

[0031] By providing the third opening 103, the light-emitting element 300 can be easily installed, allowing the light-emitting element 300 to illuminate the beam splitter 200 located in the receiving cavity 104.

[0032] Specifically, the number of light-emitting elements 300 can be increased or decreased according to lighting requirements. The number of third openings 103 can be greater than or equal to the number of light-emitting elements 300, and multiple light-emitting elements 300 installed in the third openings 103 are arranged sequentially at intervals.

[0033] Reference Figure 1 and Figure 4 In some embodiments of this utility model, the light-emitting element 300 includes a cylindrical body 310, a base 320, a connecting structure 330, and a light-emitting structure 340; the cylindrical body 310 is disposed at the third opening 103; the cylindrical body 310 is disposed vertically through the cylindrical body 310, the base 320 is detachably inserted into the cylindrical body 310, and the connecting structure 330 detachably connects the cylindrical body 310 and the base 320; the light-emitting structure 340 is disposed at the top of the base 320.

[0034] The cylindrical body 310 has a third opening 103 through it, and the interior of the cylindrical body 310 is vertically connected so that the cylindrical body 310 can be fitted over the base 320. The light-emitting structure 340 is located at the top of the base 320, and light can be emitted to the beam splitter 200 through the light-emitting structure 340. The base 320 can move up and down inside the cylindrical body 310, and the base 320 and the cylindrical body 310 can be detachably connected by the connecting structure 330, so that the light-emitting structure 340 and the base 320 can be removed by removing the base 320 from the cylindrical body 310, which facilitates the replacement of the light-emitting structure 340.

[0035] Specifically, the light-emitting structure 340 is an LED structure or other structure capable of emitting light.

[0036] Reference Figures 3 to 5In some embodiments of this utility model, the cylindrical body 310 is movably disposed at the third opening 103. A first annular protrusion 311 is provided on the periphery of the top end of the cylindrical body 310. The first annular protrusion 311 is located inside the receiving cavity 104 and is vertically opposite to the bottom wall of the receiving cavity 104. The seat 320 is movably disposed inside the cylindrical body 310. A second annular protrusion 321 is provided on the periphery of the bottom end of the seat 320. The second annular protrusion 321 is located outside the receiving cavity 104 and is vertically opposite to the outer bottom wall of the outer shell 100.

[0037] The cylindrical body 310 moves downward until the first annular protrusion 311 abuts against the bottom wall of the receiving cavity 104, thereby limiting the downward movement of the cylindrical body 310 out of the receiving cavity 104. The cylindrical body 310 and the base 320 are connected to each other through the connecting structure 330, thereby limiting the position of the base 320 and the light-emitting structure 340 and preventing the light-emitting element 300 from falling out of the third opening 103. The base 320 moves upward until the second annular protrusion abuts against the bottom wall of the outer shell 100, thereby limiting the upward movement of the base 320. The cylindrical body 310 and the base 320 are connected to each other through the connecting structure 330, thereby limiting the position of the base 320 and the light-emitting structure 340 and preventing the light-emitting element 300 from falling completely into the receiving cavity 104 from the third opening 103.

[0038] Reference Figure 1 and Figure 3 In some embodiments of this utility model, a Fresnel lens 500 is also included; multiple Fresnel lenses 500 are provided, and all are disposed within the receiving cavity 104; the multiple Fresnel lenses 500 are respectively located between the beam splitter 200 and the multiple light-emitting elements 300, so as to achieve the effect of light focusing.

[0039] Specifically, a placement groove is provided on the upper side of the light-blocking plate 400, and a groove is provided on the inner wall of the receiving cavity 104. The side of the Fresnel lens 500 is embedded in the placement groove and the groove so as to define the position of the Fresnel lens 500 in the receiving cavity 104.

[0040] Reference Figures 1 to 3 In some embodiments of this utility model, an intensifying lens 600 is also included; the intensifying lens 600 is disposed at the second opening 102.

[0041] The light emitted by the light-emitting element 300 shines on the beam splitter 200, and then is reflected from the first opening 101 to the workpiece to be inspected through the beam splitter 200. The light then passes through the first opening 101, the beam splitter 200 and the intensifying lens 600 and enters the camera detection module. The illumination effect can be improved by setting the intensifying lens 600.

[0042] Reference Figures 1 to 3In some embodiments of this utility model, the outer shell 100 includes a first side plate 110, a second side plate 120, a top plate 130, and a bottom plate 140; the top plate 130 and the bottom plate 140 are arranged opposite to each other and spaced apart in the vertical direction; there are two first side plates 110 and two side plates 120; the two first side plates 110 are arranged opposite to each other and spaced apart in the first horizontal direction, and are respectively connected to the top plate 130 and the bottom plate 140; the two second side plates 120 are arranged opposite to each other and spaced apart in the second horizontal direction, and are respectively connected to the top plate 130 and the bottom plate 140; the side ends of the two first side plates 110 are respectively connected to the side ends of the two second side plates 120.

[0043] The top ends of the first side plate 110 and the second side plate 120 are both connected to the top plate 130, and the bottom ends of the first side plate 110 and the second side plate 120 are both connected to the bottom plate 140. The side ends of the first side plate 110 and the second side plate 120 are connected to form the outer shell 100 structure.

[0044] A first opening 101 is defined between the two second side plates 120, the top plate 130 and one of the first side plates 110, a second opening 102 is provided on the other first side plate 110, and a third opening 103 is provided on the bottom plate 140.

[0045] In some embodiments of this utility model, a control component is also included; the control component is connected to the housing 100 and electrically connected to a plurality of light-emitting elements 300; the control component is capable of controlling the opening and closing and brightness of the light-emitting elements 300.

[0046] The control unit can simultaneously start and stop multiple light-emitting elements 300, and can also selectively control the start and stop of a single light-emitting element 300, so as to adapt to different workpieces to be tested by controlling a portion of the light-emitting elements 300.

[0047] The control unit can improve the lighting effect by controlling the brightness of the light-emitting element 300.

[0048] Reference Figures 1 to 3 In some embodiments of this utility model, two light-emitting elements 300 are provided, and one light-blocking plate 400 is provided; the two light-emitting elements 300 are arranged at intervals along the second horizontal direction, and the light-blocking plate 400 is disposed between the two light-emitting elements 300.

[0049] Specifically, the lower end of the light-blocking plate 400 extends to the bottom wall of the receiving cavity 104, and the Fresnel lens 500 abuts against the inner wall of the receiving cavity 104 and the top of the light-blocking plate 400.

[0050] Reference Figure 5In some embodiments of this utility model, the receiving cavity 104 is provided with mounting grooves 105 on its two opposite inner sidewalls along the second horizontal direction, and the mounting grooves 105 extend along the inclined direction; the two ends of the beam splitter 200 along the second horizontal direction are respectively disposed in the two mounting grooves 105.

[0051] By setting the mounting slot 105, the position of the beam splitter 200 within the receiving cavity 104 can be defined, thereby improving the stability of the reflected light.

[0052] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A common optical path parallel coaxial combined light source, characterized in that, include: The outer shell is provided with a first opening, a second opening, and a receiving cavity; the first opening and the second opening are respectively provided on opposite side walls of the outer shell along a first horizontal direction; The first opening and the second opening are disposed opposite to each other, and both are connected to the receiving cavity; A beam splitter is inclinedly disposed within the receiving cavity and located between the first opening and the second opening; the beam splitter is respectively disposed opposite to the first opening and the second opening; Multiple light-emitting elements are provided; the multiple light-emitting elements are detachably disposed on the bottom wall of the receiving cavity and are arranged sequentially at intervals along the second horizontal direction, and all are disposed facing the beam splitter; the first horizontal direction and the second horizontal direction are perpendicular to each other; At least one light-blocking plate is provided; the light-blocking plate is disposed in the receiving cavity and located between two adjacent light-emitting elements.

2. The common-optical-path parallel coaxial combined light source according to claim 1, characterized in that, The bottom wall of the outer shell is provided with a third opening; there are multiple third openings, which are arranged at intervals along the second horizontal direction and are all connected to the receiving cavity; the multiple light-emitting elements are detachably disposed at the multiple third openings.

3. The common-optical-path parallel coaxial combined light source according to claim 2, characterized in that, The light-emitting element includes a cylindrical body, a base, a connecting structure, and a light-emitting structure; the cylindrical body is disposed at the third opening; the cylindrical body is disposed vertically through the cylindrical body, the base is detachably inserted into the cylindrical body, and the connecting structure detachably connects the cylindrical body and the base; the light-emitting structure is disposed at the top of the base.

4. The common optical path parallel coaxial combined optical source according to claim 3, characterized in that, The cylindrical body is movably disposed at the third opening. A first annular protrusion is provided on the circumference of the top end of the cylindrical body. The first annular protrusion is located inside the receiving cavity and is vertically opposite to the bottom wall of the receiving cavity. The seat is movably disposed inside the cylindrical body. A second annular protrusion is provided on the circumference of the bottom end of the seat. The second annular protrusion is located outside the receiving cavity and is vertically opposite to the outer bottom wall of the outer shell.

5. The common-optical-path parallel coaxial combined light source according to claim 1, characterized in that, It also includes Fresnel lenses; multiple Fresnel lenses are provided, and all of them are disposed within the receiving cavity; the multiple Fresnel lenses are respectively located between the beam splitter and the multiple light-emitting elements.

6. The co-linear parallel coaxial combined light source according to claim 1, wherein, It also includes an intensifying lens; the intensifying lens is disposed at the second opening.

7. The common-optical-path parallel coaxial combined light source according to claim 1, characterized in that, The outer casing includes a first side plate, a second side plate, a top plate, and a bottom plate; the top plate and the bottom plate are arranged opposite to each other and spaced apart in the vertical direction; there are two first side plates and two second side plates; the two first side plates are arranged opposite to each other and spaced apart in the first horizontal direction, and are respectively connected to the top plate and the bottom plate; the two second side plates are arranged opposite to each other and spaced apart in the second horizontal direction, and are respectively connected to the top plate and the bottom plate; the side ends of the two first side plates are respectively connected to the side ends of the two second side plates.

8. The common optical path parallel coaxial combined optical source according to claim 1, characterized in that, It also includes a control component; the control component is connected to the housing and electrically connected to the plurality of light-emitting elements; the control component is capable of controlling the on / off state and brightness of the light-emitting elements.

9. The common-optical-path parallel coaxial combined light source according to claim 1, characterized in that, Two light-emitting elements are provided, and one light-blocking plate is provided; the two light-emitting elements are arranged at intervals along the second horizontal direction, and the light-blocking plate is disposed between the two light-emitting elements.

10. The co-linear parallel coaxial combined light source according to claim 1, wherein, The receiving cavity is provided with mounting grooves on its two opposite inner sidewalls along the second horizontal direction, and the mounting grooves extend along the inclined direction; the two ends of the beam splitter along the second horizontal direction are respectively disposed in the two mounting grooves.

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