CN208794069U - A kind of plane shadowless light source device of plated film - Google Patents
A kind of plane shadowless light source device of plated film Download PDFInfo
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- CN208794069U CN208794069U CN201821563371.0U CN201821563371U CN208794069U CN 208794069 U CN208794069 U CN 208794069U CN 201821563371 U CN201821563371 U CN 201821563371U CN 208794069 U CN208794069 U CN 208794069U
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- light source
- source device
- guide plate
- light guide
- light
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- 239000000758 substrate Substances 0.000 claims abstract description 28
- 239000011324 bead Substances 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 239000012528 membrane Substances 0.000 description 8
- 238000001514 detection method Methods 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 230000003760 hair shine Effects 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 208000032822 Ring chromosome 11 syndrome Diseases 0.000 description 3
- 239000007888 film coating Substances 0.000 description 3
- 238000009501 film coating Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Planar Illumination Modules (AREA)
Abstract
A kind of plane shadowless light source device of plated film, the plane shadowless light source device of the plated film include border, four pieces of LED substrate, light guide plate and surface frames for posting LED lamp bead；Wherein, the border is provided with the first loophole, and the border includes medial surface and the stage portion from medial surface protrusion, and the LED substrate is set to the medial surface of the border, and the LED substrate is fixed in the stage portion of the border；Four pieces of LED substrate are respectively arranged at four medial surfaces of the border；The light guide plate is set on the border between four pieces of LED substrate, and the light guide plate is coated with part reflective semitransparent film on one side；The surface frame is provided with the second loophole, and the surface frame pushes down the light guide plate, and is fixedly connected with the border.The plane shadowless light source device structure of plated film is scientific and reasonable in the utility model, and stability is high.And since the thickness of the plane shadowless light source device of the plated film is thin, focusing is easier, and can substitute coaxial light source in the use occasion of many limited spaces.
Description
Technical Field
The utility model relates to a machine vision light source detects technical field, specificly, relates to a plane shadowless light source device of coating film.
Background
The machine vision detection system adopts a CCD camera lens to convert a detected target into an image signal and transmits the image signal to a special image processing system.
The heart of the machine vision inspection system is image acquisition and processing. All the information comes from the image, and the quality of the image itself is critical to the whole visual system. The light source is an important factor affecting the image level of the machine vision system, since it directly affects the quality of the input data and the effect of at least 30% of the applications. Through proper light source illumination design, target information and background information in the image are optimally separated, the difficulty of image processing algorithm segmentation and identification can be greatly reduced, the positioning and measuring accuracy of the system is improved, and the reliability and the comprehensive performance of the system are improved.
In the prior art, target information and background information in an image are optimally separated mainly through a double-mesh-point plane shadowless light source device. The principle of the double-mesh-point plane shadowless light source device is that dot-shaped reflective ink is printed on one surface of a light guide plate, the printed reflective ink can reflect part of light, the reflected light can penetrate through the light guide plate to illuminate an object to be detected, and the light illuminating the object to be detected penetrates through the light guide plate and an ink gap on the light guide plate to reach a lens of a lens camera, so that the purpose of detection is achieved.
However, in the double-mesh-point planar shadowless light source device, the double-mesh-point light source is difficult to focus, is easily limited by space in the using process, and is not suitable for detecting too close working distance.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem be: in the existing double-mesh point plane shadowless light source device, the double-mesh point light source is difficult to focus, is easy to receive space limitation in the using process and is not suitable for detecting too close working distance.
In order to solve the above problems, the present invention provides a coated planar shadowless light source device, which comprises a periphery, four LED substrates with LED beads attached thereon, a light guide plate and a face frame; wherein,
the periphery is provided with a first light hole, the periphery comprises an inner side surface and a step part protruding from the inner side surface, the LED substrate is arranged on the inner side surface of the periphery, and the LED substrate is fixed on the step part of the periphery;
the four LED substrates are respectively arranged on four inner side surfaces of the periphery; the light guide plate is arranged on the periphery among the four LED substrates, and one surface of the light guide plate is plated with a semi-reflecting and semi-permeable film;
the surface frame is provided with a second light hole, presses the light guide plate and is fixedly connected with the periphery.
Optionally, the material of the periphery and the face frame is aluminum.
Optionally, the circumference and the face frame are fixedly connected through screws.
Optionally, the semi-reflective and semi-transparent film is plated on the surface of the light guide plate close to one side of the face frame.
Compared with the prior art, the technical scheme of the utility model have following advantage:
the light that four LED base plates pasted with LED lamp pearl sent passes through the light guide plate transmission, because the one side of light guide plate has plated the half-reflection semi-permeable membrane, so partial light sees through light guide plate and first light trap shine to be detected the thing, partial light is reflected when plating that face of half-reflection semi-permeable membrane, shine through first light trap again and is detected the thing, light passes first light trap, light guide plate and second light trap arrival camera lens from being detected the thing reflection again, thereby reach and detect the purpose. The planar shadowless light source device for the coating film is scientific and reasonable in structure and high in stability. And because the thickness of the planar shadowless light source device of the coating film is thin, the focusing is easier, and the planar shadowless light source device can replace a coaxial light source in a plurality of occasions with limited space.
In addition, compared with the existing double-mesh-point plane shadowless light source device, the light of the coated plane shadowless light source device is easier to focus, and the target information and the background information in the image acquired by the camera lens can be optimally separated, so that the difficulty of image processing algorithm segmentation and identification is greatly reduced, the positioning and measuring precision of the machine vision detection system is improved, and the reliability and the comprehensive performance of the machine vision detection system are improved.
Further, the material of the peripheral rim and the surface frame is aluminum, and since aluminum has a characteristic of good heat dissipation, the planar shadowless light source device including the coating film of the peripheral rim and the aluminum surface frame also has an advantage of good heat dissipation.
Drawings
FIG. 1 is a perspective view of a coated flat shadowless light source device of the present invention viewed from a face frame;
FIG. 2 is an exploded view of the planar shadowless light source device coated in FIG. 1;
FIG. 3 is an enlarged view of the planar shadowless light source device coated within the dashed square of FIG. 2;
FIG. 4 is a perspective view of the coated flat shadowless light source device of the present invention viewed from a peripheral angle;
FIG. 5 is an exploded view of the planar shadowless light source device coated in FIG. 4;
fig. 6 is a light path diagram of the planar shadowless light source device of the present invention as a light source for detecting an object to be detected.
In the figure: 1 is a planar shadowless light source device with a film coating; 11 is a circle; 12 is an LED substrate; 13 is a light guide plate; and 14 is a face frame.
Detailed Description
In the prior art, target information and background information in an image are optimally separated mainly by a double-mesh-point plane shadowless light source device. However, the double-mesh point light source in the double-mesh point plane shadowless light source device is difficult to focus, is easy to receive space limitation in the using process, and is not suitable for detecting too close working distance.
The utility model discloses in a plane shadowless light source device of coating film, the light that the LED base plate sent passes through the light guide plate transmission, half-reflection semi-permeable membrane has been plated in the one side of light guide plate, so partial light sees through light guide plate and first light trap and shines and is detected the thing, partial light is reflected when plating that face of half-reflection semi-permeable membrane, shine through first light trap again and is detected the thing, light passes first light trap from being detected the thing reflection again, light guide plate and second light trap reach the camera lens, thereby reach and detect the purpose. The planar shadowless light source device for the film coating of the camera lens has a scientific and reasonable structure and high stability. And because the thickness of the planar shadowless light source device of the coating film is thin, the focusing is easier, and the planar shadowless light source device can replace a coaxial light source in a plurality of occasions with limited space.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1 to 5, fig. 1 is a perspective view of a coated flat shadowless light source device 1 of the present invention when viewed from a face frame, fig. 2 is an exploded view corresponding to the coated flat shadowless light source device 1 in fig. 1, and fig. 3 is an enlarged view of the coated flat shadowless light source device in a dotted-line frame in fig. 2; FIG. 4 is a perspective view of the coated flat shadowless light source device of the present invention viewed from a peripheral angle; fig. 5 is an exploded view of the planar shadowless light source device coated in fig. 4.
As can be seen from fig. 2 and 5, the film-coated planar shadowless light source device 1 includes a periphery 11, four LED substrates 12 with LED beads attached thereon, a light guide plate 13 and a surface frame 14;
the periphery 11 is provided with a first light hole, the periphery 11 comprises an inner side surface and a step part protruding from the inner side surface, the LED substrate 12 is arranged on the inner side surface of the periphery, and the LED substrate 12 is fixed on the step part of the periphery;
the four LED substrates 12 are respectively arranged on four inner side surfaces of the peripheral ring 11; the light guide plate 13 is arranged on the periphery 11 among the four LED substrates 12, and one surface of the light guide plate 13 is plated with a semi-reflecting and semi-permeable film;
the surface frame 14 is provided with a second light hole, and the surface frame 14 presses the light guide plate and is fixedly connected with the peripheral ring 11.
In this embodiment, the material of the peripheral ring 11 and the face frame 14 is aluminum. Since aluminum has a characteristic of good heat dissipation, a planar shadowless light source device including a coating film having an aluminum periphery and an aluminum bezel also has an advantage of good heat dissipation.
In this embodiment, the circumference and the face frame are fixedly connected through screws. But it can also adopt other linking modes, and the utility model discloses do not do the restriction to this.
Please refer to fig. 6, which is a light path diagram of the planar shadowless light source device of the present invention. As can be seen from fig. 6, when light emitted by the LED lamp beads on the LED substrate passes through the light guide plate plated with the transflective film, a part of the light passes through the light guide plate and the first light hole to irradiate the object to be detected, and another part of the light passes through the surface of the light guide plate plated with the transflective film and is reflected to irradiate the object to be detected through the light guide plate and the first light hole; then, light irradiated to the detected object is reflected by the detected object to pass through the first light transmission hole, the light guide plate and the second light transmission hole to reach the camera lens, so that the detection purpose is achieved.
The planar shadowless light source device 11 for coating in the embodiment comprises a periphery 11, four LED substrates 12 pasted with LED lamp beads, a light guide plate 13 and a surface frame 14; the light that four LED base plates 12 pasted with LED lamp pearl sent passes through light guide plate 13 transmission, because the one side of light guide plate 13 has plated the semi-reflecting semi-permeable membrane, so partial light sees through the light guide plate and shines the detected object, and partial light is reflected when plating that side of semi-reflecting semi-permeable membrane and is shone again to be detected the object, and light is from being detected the object reflection again and passing the light guide plate and reach the camera lens to reach and detect the purpose. The planar shadowless light source device 1 with the coating film is scientific and reasonable in structure and high in stability. And because the thickness of the planar shadowless light source device 1 of the coating film is thin, the focusing is easier, and the coaxial light source can be replaced in a plurality of occasions with limited space.
In addition, compared with the existing double-mesh-point planar shadowless light source device, the light source in the coated planar shadowless light source device 1 is easier to focus, and target information and background information in an image acquired by a camera lens can be optimally separated, so that the difficulty of image processing algorithm segmentation and identification is greatly reduced, the positioning and measuring precision of a machine vision detection system is improved, and the reliability and the comprehensive performance of the machine vision detection system are improved.
The utility model provides a coated planar shadowless light source device, which comprises a periphery, four LED substrates pasted with LED lamp beads, a light guide plate and a face frame; the LED substrate is arranged on the inner side surface of the periphery, and the LED substrate is fixed on the step part of the periphery; the four LED substrates are respectively arranged on four inner side surfaces of the periphery; the light guide plate is arranged on the periphery among the four LED substrates, and one surface of the light guide plate is plated with a semi-reflecting and semi-permeable film; the surface frame is provided with a second light hole, presses the light guide plate and is fixedly connected with the periphery. Because the one side of light guide plate is plated with the semi-reflecting semi-permeable membrane, so partial light sees through light guide plate and first light trap and shines and is detected the thing, and partial light is reflected when the face that plated the semi-reflecting semi-permeable membrane gets off, shines again through first light trap and detects the thing, and light is from detecting the thing reflection again and passing first light trap, light guide plate and second light trap and reach the camera lens to reach and detect the mesh. The camera lens has the advantages that the thickness of the coated planar shadowless light source device is small, the focusing is easier, and a coaxial light source can be replaced in a plurality of occasions with limited space. The problem of among the two mesh point plane shadowless light source devices of current double-mesh point light source device double-mesh point light source focus difficult, easily receive space restriction in the use, be unsuitable to too close working distance and detect is solved.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.
Claims (4)
1. A coated planar shadowless light source device is characterized by comprising a periphery, four LED substrates, a light guide plate and a face frame, wherein the four LED substrates are pasted with LED lamp beads; wherein,
the periphery is provided with a first light hole, the periphery comprises an inner side surface and a step part protruding from the inner side surface, the LED substrate is arranged on the inner side surface of the periphery, and the LED substrate is fixed on the step part of the periphery;
the light guide plate is arranged on the periphery among the four LED substrates, and one surface of the light guide plate is plated with a semi-reflecting and semi-permeable film;
the surface frame is provided with a second light hole, presses the light guide plate and is fixedly connected with the periphery.
2. The coated planar shadowless light source device of claim 1 wherein the material of said perimeter and said face frame is aluminum.
3. The coated planar shadowless light source device of claim 1 wherein the periphery and the face frame are fixedly connected by screws.
4. The coated planar shadowless light source device of claim 1 wherein the transflective film is coated on a surface of the light guide plate adjacent to the bezel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821563371.0U CN208794069U (en) | 2018-09-24 | 2018-09-24 | A kind of plane shadowless light source device of plated film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821563371.0U CN208794069U (en) | 2018-09-24 | 2018-09-24 | A kind of plane shadowless light source device of plated film |
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| Publication Number | Publication Date |
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| CN208794069U true CN208794069U (en) | 2019-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821563371.0U Active CN208794069U (en) | 2018-09-24 | 2018-09-24 | A kind of plane shadowless light source device of plated film |
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| CN (1) | CN208794069U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754336A (en) * | 2021-11-02 | 2022-07-15 | 广东皇智照明科技有限公司 | Sensor-controlled lighting device |
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2018
- 2018-09-24 CN CN201821563371.0U patent/CN208794069U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754336A (en) * | 2021-11-02 | 2022-07-15 | 广东皇智照明科技有限公司 | Sensor-controlled lighting device |
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