CN218122433U - Light source for improving uniformity of light source of machine vision side light emitting surface - Google Patents
Light source for improving uniformity of light source of machine vision side light emitting surface Download PDFInfo
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- CN218122433U CN218122433U CN202222369091.9U CN202222369091U CN218122433U CN 218122433 U CN218122433 U CN 218122433U CN 202222369091 U CN202222369091 U CN 202222369091U CN 218122433 U CN218122433 U CN 218122433U
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Abstract
The utility model discloses an improve light source of machine vision side light emitting area light source homogeneity, include: a housing, a light source, a light guide; the housing includes: the light guide box is communicated with the light source box, and one side surface of the light guide box is provided with an illumination port; the light guide includes: a light receiving element, a light guide plate connected to the light receiving element; the light source is arranged in the light source box, the light receiving piece is arranged in the light source box, the light source faces the light receiving piece, the light guide plate is arranged in the light guide box and faces the illumination opening, and the thickness of one end, connected with the light receiving piece, of the light guide plate is larger than that of one end, far away from the light receiving piece, of the light guide plate. Because the thickness of the end, connected with the light receiving piece, in the light guide plate is greater than the thickness of the end, far away from the light receiving piece, in the light guide plate, the loss of the end, far away from the light receiving piece, of light is less, and therefore the uniformity of a light source can be improved.
Description
Technical Field
The utility model relates to a machine vision side light emitting area light source technical field especially relates to a improve light source of machine vision side light emitting area light source homogeneity.
Background
In machine vision, there are generally two types of light emitting surface light sources, a bottom light emitting type (surface light source shown in fig. 1) and a side light emitting type (surface light source shown in fig. 2).
In current luminous area source of side, generally adopt unilateral LED lamp pearl to give out light, for make the light source relatively be, can adopt the even light guide plate of thickness to lead light more, but in practical application, because light still can have the loss in the light guide plate, the luminance of the one end that is close to LED lamp pearl in the light guide plate can exceed the luminance of keeping away from that one end of LED lamp pearl, the homogeneity is not particularly good. For this reason, the present multilateral LED lamp pearl that adopts is simultaneously to giving out light to the multilateral of light guide plate, but this kind of condition can lead to the promotion of cost, and the structure of light source also becomes more complicated, and the cost further promotes.
Accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the light source improves the uniformity of a light source at a light emitting surface at the visual side of the machine, improves the uniformity of the light source at the light emitting surface at the side, and reduces the cost.
The technical scheme of the utility model as follows: provided is a light source for improving uniformity of a light source of a machine vision side light emitting face, comprising: a housing, a light source, a light guide; the housing includes: the light source box and the light guide box are communicated with the light source box, and one side surface of the light guide box is provided with an illumination port; the light guide includes: a light receiving element, a light guide plate connected to the light receiving element; the light source is arranged in the light source box, the light receiving piece is arranged in the light source box, the light source faces the light receiving piece, the light guide plate is arranged in the light guide box and faces the illumination opening, and the thickness of one end, connected with the light receiving piece, of the light guide plate is larger than that of one end, far away from the light receiving piece, of the light guide plate. The light receiving member and the light guide plate are integrally formed.
The light emitted by the light emitting source is conducted to the light guide plate through the light receiving piece, and because the thickness of one end of the light guide plate connected with the light receiving piece is larger than that of one end of the light guide plate far away from the light receiving piece, the loss of the light at the end far away from the light receiving piece is less, and therefore the uniformity of the light source can be improved. Because the light emitting sources are not arranged on multiple sides, materials can be effectively saved, and the cost is reduced.
Further, the bottom surface of the inner side of the light guide box is an inclined surface, and the inclined surface is matched with the surface of the light guide plate. The inclined plane can be better convenient for the light guide plate to be assembled.
Further, the beveled surface is coated with a reflective coating. The reflective coating is used for reflecting the light emitted by the light guide plate back to the light guide plate, so that the loss of the light is reduced.
Further, the lower surface of the light guide plate is a sawtooth surface. The sawtooth surface can increase diffuse reflection so as to improve the uniformity of products.
Further, the upper surface of the light guide plate is coated with a diffusion coating. The diffusion coating can further increase the uniformity of light emitted by the light guide plate.
Further, the light emitting source is an LED lamp panel. The LED lamp panel contains two rows of LED lamp pearls at least.
Further, the height of the light receiving surface of the light receiving part is larger than the thickness of the light guide plate. The light receiving surface area is large, and the light receiving surface area can receive more light and conduct the tube to the light guide plate.
Further, the upper surface of light guide plate with the illumination mouth flushes, avoids light to follow the side strake light-emitting of light guide plate, promotes pleasing to the eye degree.
When the scheme is adopted, the utility model provides an improve light source of machine vision side light emitting area light source homogeneity, the light that the light emitting source sent conducts for the light guide plate through receiving the light piece, because the thickness of even receiving the one end of light piece in the light guide plate is greater than the thickness of keeping away from the one end of receiving the light piece in the light guide plate, and the light is few in the one end loss of keeping away from the light piece, consequently can promote the homogeneity of light source. Because the light emitting sources are not arranged on multiple sides, materials can be effectively saved, and the cost is reduced.
Drawings
FIG. 1 is a schematic view of a bottom emission type surface light source;
FIG. 2 is a schematic structural diagram of a side-view type surface light source;
fig. 3 is a schematic structural diagram of an embodiment of the present invention;
FIG. 4 is an exploded view of the embodiment of FIG. 3;
FIG. 5 is a cross-sectional view of the embodiment of FIG. 3;
fig. 6 is an enlarged view of the area a in fig. 5.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 3 to fig. 6, the present embodiment provides a light source for improving uniformity of a light source at a side light-emitting surface of a machine vision, including: a housing, a light source 10, a light guide; the housing includes: the light guide box comprises a light source box 11 and a light guide box 12 communicated with the light source box 11, wherein one side surface of the light guide box 12 is provided with an illumination port; the light guide includes: a light receiving member 13, a light guide plate 14 connected to the light receiving member 13; the light emitting source 10 is disposed in the light source box 11, the light receiving element 13 is disposed in the light source box 11, the light emitting source 10 faces the light receiving element 13, the light guide plate 14 is disposed in the light guide box 12 and faces the illumination opening, and a thickness of an end of the light guide plate 14 connected to the light receiving element 13 is greater than a thickness of an end of the light guide plate 14 far from the light receiving element 13. The light receiving member 13 is integrally formed with the light guide plate 14. The upper surface of the light guide plate 14 is flush with the illumination opening, light is prevented from being emitted from the side edge strips of the light guide plate 14, and the attractiveness is improved. The light emitting source 10 is an LED lamp panel. The LED lamp panel contains two rows of LED lamp pearls 15.
The light emitted by the light emitting source 10 is transmitted to the light guide plate 14 through the light receiving element 13, and since the thickness of the end of the light guide plate 14 connected to the light receiving element 13 is greater than the thickness of the end of the light guide plate 14 far away from the light receiving element 13, the loss of the light at the end far away from the light receiving element 13 is small, so that the uniformity of the light source can be improved. Because the light emitting sources 10 are not arranged on multiple sides, materials can be effectively saved, and the cost is reduced.
In this embodiment, the bottom surface of the inner side of the light guide box 12 is an inclined surface, and the inclined surface is matched with the surface of the light guide plate 14. The inclined surface can better facilitate the assembly of the light guide plate 14. The beveled surface is coated with a reflective coating 16. The reflective coating 16 is used to reflect the light emitted from the light guide plate 14 back to the light guide plate 14, thereby reducing the loss of light.
In this embodiment, the lower surface of the light guide plate 14 is a sawtooth surface 17. The serrated surface 17 can increase diffuse reflection to improve product uniformity. The upper surface of the light guide plate 14 is coated with a diffusion coating 18. The diffusion coating 18 can further increase the uniformity of light exiting the light guide plate 14.
In this embodiment, the height of the light receiving surface of the light receiving member 13 is larger than the thickness of the light guide plate 14. The light receiving surface area is large, and the light guide plate 14 can receive more light and transmit the tube.
To sum up, the utility model provides an improve light source of machine vision side light emitting area light source homogeneity, the light that the light emitting source sent conducts for the light guide plate through receiving the light piece, because the thickness of the one end of receiving the light piece in the light guide plate even is greater than the thickness of keeping away from the one end of receiving the light piece in the light guide plate, and the light is less at the one end loss of keeping away from the light piece, consequently can promote the homogeneity of light source. Because the light emitting sources are not arranged on multiple sides, materials can be effectively saved, and the cost is reduced.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A light source for improving the uniformity of a light source on a side light emitting surface of a machine vision, comprising: a housing, a light source, a light guide; the housing includes: the light guide box is communicated with the light source box, and one side surface of the light guide box is provided with an illumination port; the light guide includes: a light receiving element, a light guide plate connected to the light receiving element; the light source is arranged in the light source box, the light receiving piece is arranged in the light source box, the light source faces the light receiving piece, the light guide plate is arranged in the light guide box and faces the illumination opening, and the thickness of one end, connected with the light receiving piece, of the light guide plate is larger than that of one end, far away from the light receiving piece, of the light guide plate.
2. The light source of claim 1, wherein the bottom surface of the light guide box is an inclined surface, and the inclined surface is engaged with the surface of the light guide plate.
3. A light source as claimed in claim 2 wherein the beveled surface is coated with a reflective coating to improve the uniformity of the light source from the machine vision side light emitting face.
4. The light source of claim 1, wherein the lower surface of the light guide plate is a sawtooth surface.
5. A light source as claimed in claim 1, wherein the upper surface of the light guide plate is coated with a diffusion coating to improve the uniformity of the light from the machine vision side light emitting face.
6. The light source for improving the uniformity of the light source at the light emitting surface at the visual side of the machine as claimed in claim 1, wherein the light emitting source is an LED lamp panel.
7. The light source of claim 6, wherein the LED lamp panel comprises at least two rows of LED lamp beads.
8. The light source of claim 1, wherein the height of the light receiving surface of the light receiving element is greater than the thickness of the light guide plate.
9. A light source as claimed in claim 1, wherein the upper surface of the light guide plate is flush with the light opening.
10. A light source as claimed in claim 1, wherein the light receiving element is integrally formed with the light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222369091.9U CN218122433U (en) | 2022-09-06 | 2022-09-06 | Light source for improving uniformity of light source of machine vision side light emitting surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222369091.9U CN218122433U (en) | 2022-09-06 | 2022-09-06 | Light source for improving uniformity of light source of machine vision side light emitting surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218122433U true CN218122433U (en) | 2022-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222369091.9U Active CN218122433U (en) | 2022-09-06 | 2022-09-06 | Light source for improving uniformity of light source of machine vision side light emitting surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218122433U (en) |
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2022
- 2022-09-06 CN CN202222369091.9U patent/CN218122433U/en active Active
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