CN214375745U - High-brightness planar shadowless light source - Google Patents

Abstract

The utility model provides a high bright plane shadowless light source, the light source includes the light guide plate, centers on the border that the light guide plate set up, with the face frame of border cooperation equipment, the border includes side and bottom surface, first light trap has been seted up on the bottom surface, on the face frame with the second light trap has been seted up to the position that first light trap corresponds, the border still includes certainly the border of first light trap is followed the bottom surface is towards the inboard accepting part that extends, the light guide plate set up in on the accepting part just the light guide plate with be provided with the lamp plate between the side, the light guide plate is close to one side coating of face frame has the half-reflecting semi-permeable membrane, the lamp plate with be equipped with the condensing lens between the light guide plate. The utility model provides a plane shadowless light source improves light source luminance under the condition that does not change luminous power, and the structure is small and exquisite light, the light efficiency high-usage.

Description

High-brightness planar shadowless light source

Technical Field

The utility model relates to a machine vision detects light source technical field, especially relates to a high bright plane shadowless light source.

Background

The machine vision system is to use a machine to replace human eyes for measurement or detection judgment, and relates to three parts, namely an illumination part, a lens part and a camera, wherein an object to be detected is converted into an image signal through the lens of the camera, and then the image signal is subjected to subsequent processing. In this case, the illumination directly affects the input condition of the machine vision system, thereby affecting the image processing result and further affecting the machine judgment, so the importance of the light source in the machine vision system is self-evident.

On the basis of heat dissipation of the existing structure, in order to achieve a better effect, the power of the existing plane shadowless light source is improved to the limit, the temperature of the light source reaches the upper limit of the standard, namely, on the basis of the existing structure, due to the limitation of mechanism space, the function of the heat dissipation structure cannot be increased, so that the power can not be increased to improve the brightness of the light source, and the brightness of the light source directly influences the imaging condition of the defects on the object to be detected.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a high-brightness planar shadowless light source to improve the above problems.

In a first aspect, the utility model provides a high bright plane shadowless light source, the light source include the light guide plate, center on the border that the light guide plate set up, with the face frame of border cooperation equipment, the border includes side and bottom surface, first light trap has been seted up on the bottom surface, on the face frame with the second light trap has been seted up to the position that first light trap corresponds, the border of first light trap is still included certainly the bottom surface is towards the inboard portion of accepting that extends, the light guide plate set up in the portion of accepting just the light guide plate with be provided with the lamp plate between the side, the light guide plate is close to one side coating of face frame has half the pellicle, the lamp plate with be equipped with the condensing lens between the light guide plate.

Preferably, the lamp plate is close to the lamp pearl of evenly having arranged in light guide plate one side.

Preferably, the condensing lens is close to lamp pearl one side is provided with dodges the light trough of lamp pearl, the condensing lens is close to light guide plate one side is provided with the spotlight portion.

Preferably, the light-gathering part is a protrusion in the shape of a hemispherical arc.

Preferably, a transparent plate is arranged between the light guide plate and the face frame.

Preferably, the border is hollow rectangular frame, the border includes four sides and four the side corresponds four the lamp plate, four the lamp plate winds the light guide plate sets up all around.

Preferably, a heat dissipation rubber mat is arranged between the lamp panel and the side face.

More preferably, the material of the periphery and the face frame is aluminum.

Preferably, the periphery and the face frame are fixedly connected through a lock screw.

The technical effects of the utility model are that: the utility model provides a plane shadowless light source improves light source luminance under the condition that does not change luminous power, and the structure is small and exquisite light, light efficiency high-usage.

Drawings

Fig. 1 is a three-dimensional structure diagram of a planar shadowless light source according to an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a partial exploded view of fig. 1.

Reference numerals:

100. a planar shadowless light source; 10. a circle; 11. a side surface; 12. a bottom surface; 13. a first light-transmitting hole; 14. a receiving part; 20. a face frame; 21. a second light-transmitting hole; 30. a light guide plate; 40. a lamp panel; 41. a substrate; 42. a lamp bead; 50. a condenser lens; 51. a lamp slot; 52. a light-condensing section; 60. a transparent plate; 70. heat dissipation rubber mat

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides a high bright plane shadowless light source 100, as shown in fig. 1-3, including border 10, face frame 20, light guide plate 30, lamp plate 40, condensing lens 50, transparent plate 60, heat dissipation cushion 70. The periphery 10 is disposed around the light guide plate 30 and the face frame 20 is assembled with the periphery 10 in a matching manner, specifically, the periphery 10 and the face frame 20 are fixedly connected by a lock screw, and the light guide plate 30 is fixed between the periphery 10 and the face frame 20.

The periphery 10 comprises a side surface 11, a bottom surface 12, a first light transmission hole 13 and a bearing part 14, wherein the bottom surface 12 is provided with the first light transmission hole 13, the first light transmission hole 13 is opposite to a second light transmission hole 21 arranged on the face frame 20, the bearing part 14 extends towards the inner side from the edge of the first light transmission hole 13 along the bottom surface 12, the light guide plate 30 is arranged on the bearing part 14, a lamp panel 40 is arranged between the light guide plate 30 and the side surface 11, and a condenser lens 50 is arranged between the lamp panel 40 and the light guide plate 30; one side of the light guide plate 30 close to the face frame 20 is coated with a semi-reflective and semi-permeable film. Specifically, as shown in fig. 2-3, the circumference 10 is a hollow rectangular frame, the circumference 10 includes four side surfaces 11 and four side surfaces 11 corresponding to the four lamp panels 40, and the four lamp panels 40 surround the light guide plate 30.

The face frame 20 is provided with a second light hole 21 at a position corresponding to the first light hole 13, and the first light hole 13 forms a light emitting region and the second light hole 21 forms a light transmitting region. The utility model provides a plane shadowless light source 100 is used for detecting smooth object surface foul thing, fish tail, mar lamp defect. Treat that the detection object is placed in first light trap 13 one side, camera in the vision machine is in face frame 20 one side of seting up second light trap 21, the light that lamp pearl 42 on the lamp plate 40 sent passes first light trap 13 through the transmission of light guide plate 30 and shines on treating the detection object, because light guide plate 30 has half anti-semi-permeable membrane near 20 one side coating of face frame, so, partial light is shone and is plated the reflection after half anti-semi-permeable membrane cladding material, through light guide plate 30, first light trap 13 shines on treating the detection object, the camera shoots under above-mentioned light and treats the detection object, treat the purpose that the detection object reaches defect detection. Preferably, the material of the periphery 10 and the face frame 20 is aluminum, which has a good heat dissipation effect, and when the light source is used in a visual detection shadowless light source, the light brightness needs to be improved in order to achieve a better detection effect, and the light power is much higher than that of a general light source, and a material with a heat dissipation effect needs to be added with a heat dissipation function.

The lamp plate 40 specifically is LED lamp plate 40, and LED lamp plate 40 includes base plate 41 and lamp pearl 42, and lamp pearl 42 evenly arranges in one side that base plate 41 is close to light guide plate 30. Preferably, a heat dissipation rubber pad 70 is further disposed between the lamp panel 40 and the side 11.

The light collecting mirror 50 includes a light trough 51 and a light collecting part 52 for accommodating the lamp beads 42, the light trough 51 is arranged on one side of the light collecting mirror 50 close to the lamp beads 42 for avoiding and accommodating the lamp beads 42 which are uniformly arranged, the light collecting mirror 50 is provided with the light collecting part 52 close to one side of the light guide plate 30, and the light collecting part 52 is just opposite to the light guide plate 30, specifically, the light collecting part 52 is a protrusion in the shape of a hemispherical arc, as shown in fig. 2. The arrangement of the collecting mirror 50 can improve the light efficiency utilization rate, so that the brightness of the light source is improved, and under the condition of space limitation of the shadowless light source mechanism, the brightness of the shadowless light source can be directly improved by improving the light efficiency utilization rate.

A transparent plate 60 is provided between the light guide plate 30 and the face frame 20 to protect components inside the light source together with the peripheral rim 10 and the face frame 20.

To sum up, the utility model provides a plane shadowless light source 100 of hi-lite through set up condensing lens 50 between lamp plate 40 and light guide plate 30, improves light source luminance under the condition that does not change the light power, the utility model provides a plane shadowless light source 100, the structure is small and exquisite light, the light efficiency utilization ratio is high, under the condition of same power, luminance can improve 50%.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (9)

1. The utility model provides a high bright plane shadowless light source, a serial communication port, the light source includes the light guide plate, centers on the border that the light guide plate set up, with the face frame of border cooperation equipment, the border includes side and bottom surface, first light trap has been seted up on the bottom surface, on the face frame with the second light trap has been seted up to the position that first light trap corresponds, the border of first light trap is still included certainly the bottom surface is towards the inboard accepting part that extends, the light guide plate set up in on the accepting part just the light guide plate with be provided with the lamp plate between the side, the light guide plate is close to one side coating of face frame has half anti-semi-permeable membrane, the lamp plate with be equipped with the condensing lens between the light guide plate.

2. The high-brightness planar shadowless light source of claim 1, wherein lamp beads are uniformly arranged on one side of the lamp panel close to the light guide plate.

3. The high-brightness planar shadowless light source of claim 2, wherein a light groove for avoiding the light bead is arranged on one side of the collecting mirror close to the light bead, and a light collecting part is arranged on one side of the collecting mirror close to the light guide plate.

4. The high brightness, planar shadowless light source of claim 3 wherein the light concentrating portions are protrusions in the shape of hemispherical arcs.

5. The high brightness, planar shadowless light source of claim 1 wherein a transparent plate is disposed between the light guide plate and the bezel.

6. The high-brightness planar shadowless light source of claim 1, wherein the circumference is a hollow rectangular frame, the circumference comprises four sides, the four sides correspond to the four lamp panels, and the four lamp panels are arranged around the light guide plate.

7. The high-brightness planar shadowless light source of claim 1, wherein a heat-dissipating rubber mat is arranged between the lamp panel and the side face.

8. The high brightness, planar shadowless light source of claim 1 wherein the material of the perimeter and the face frame is aluminum.

9. The high-brightness planar shadowless light source of claim 1, wherein the periphery and the face frame are fixedly connected through a lock screw.

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