CN217879926U

CN217879926U - Optical fiber reflection type arched light source and detection equipment

Info

Publication number: CN217879926U
Application number: CN202221622458.7U
Authority: CN
Inventors: 钟超
Original assignee: Guangdong OPT Machine Vision Co Ltd
Current assignee: Guangdong OPT Machine Vision Co Ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-11-22
Anticipated expiration: 2032-06-27

Abstract

The utility model discloses an optical fiber reflection type arched light source and detection equipment, which generates light through a light source generator arranged outside a shell, transmits the light to an optical fiber light-emitting unit by utilizing an optical fiber unit, and reflects the light of the optical fiber light-emitting unit to one side of a detection station facing a camera avoiding hole by utilizing a reflection assembly, so that one end of a workpiece on the detection station facing the camera is illuminated, and the camera can conveniently acquire surface information of the workpiece through the camera avoiding hole; in the structure, the light source generator is arranged outside the shell, so that a heat dissipation structure does not need to be arranged in the shell, namely, the heat dissipation structure does not need to be arranged in the detection equipment for aiming at the light emitting source, the brightness of the optical fiber light emitting unit is not limited, meanwhile, the two sides of the camera avoiding hole are only provided with the workpiece and the camera, the camera is not influenced by other heat, and the imaging stability is ensured. To sum up, the utility model discloses an enough and stable formation of image of luminance can be ensured to optic fibre reflective arch light source and check out test set.

Description

Optical fiber reflection type arched light source and detection equipment

Technical Field

The utility model relates to a machine vision technical field especially relates to an optic fibre reflective arch light source and check out test set.

Background

Machine vision is a branch of rapid development of artificial intelligence, which uses a machine to replace human eyes to measure and judge workpieces, and is a comprehensive technology, specifically comprising image processing, mechanical engineering technology, control, light source illumination, optical imaging, sensors, analog and digital video technology, computer software and hardware technology and other subjects. The light source illumination is an important part of machine vision, and plays a role in enhancing the distinction between the defect feature and the background feature, so that the defect feature can be effectively separated from the background feature during image processing.

When a workpiece needs to be detected, an annular light source is usually selected to be arranged above the workpiece, and the surface of the workpiece is polished; then through setting up the camera in annular light source top to obtain the surface information of work piece, annular light source includes annular lamp plate usually, and one side of annular lamp plate sets up LED lamp pearl, and the opposite side of annular lamp plate sets up heat radiation structure in order to dispel the heat to LED lamp pearl.

On the basis, it is easy to understand that the brightness of the LED lamp beads is limited by the heat dissipation structure, if the power consumption of the selected LED lamp beads is too high, the generated heat exceeds the heat dissipation capacity of the heat dissipation structure, the polishing effect can be influenced, and the heat dissipation structure is generally limited by the internal space of the detection equipment, so that the size cannot be increased without restriction, and the heat dissipation capacity is limited; meanwhile, the heat generated by the annular light source can affect the camera above the annular light source and affect the imaging effect of the camera. Therefore, the annular light source in the prior art has the defects of insufficient brightness and influence on camera imaging.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an optic fibre reflective arch light source and check out test set solve the not enough problem that just influences the camera formation of image of annular light source luminance among the prior art at present.

To achieve the purpose, the utility model adopts the following technical proposal:

an optical fiber reflection type arched light source comprises a shell, wherein a detection cavity is formed in the shell, and a detection station is arranged in the detection cavity;

along the horizontal direction, an optical fiber avoiding hole is formed in the wall of the detection cavity on one side of the detection station; along the vertical direction, a camera avoiding hole is formed in one side, located at the detection station, of the cavity wall of the detection cavity;

a light source generator is arranged outside the shell and connected with an optical fiber unit, one end of the optical fiber unit is connected with an optical fiber light emitting unit, and the optical fiber light emitting unit penetrates through the optical fiber avoiding hole;

the detection cavity is internally provided with a reflection assembly, and the reflection assembly is used for reflecting light emitted by the optical fiber light-emitting unit to the detection station towards one end of the camera avoiding hole.

Optionally, the reflective assembly comprises a mirror unit and a reflective layer unit; the reflector unit is arranged on one side of the optical fiber light-emitting unit and used for reflecting light rays to the reflecting layer unit; the reflection layer unit is arranged on the wall of the detection cavity and used for reflecting light to one end, facing the camera avoiding hole, of the detection station.

Optionally, one end of the optical fiber light-emitting unit penetrating through the optical fiber avoiding hole is connected with a sleeve portion; a sleeve pipe and a light outlet pipe are formed in the sleeve part;

cup joint the pipeline with light-emitting pipeline intercommunication, just an pot head of optic fibre light-emitting unit is located cup joint in the pipeline, and the orientation the light-emitting pipeline, the speculum unit install in on the pipe wall of light-emitting pipeline, the inclined plane of speculum unit respectively for the mouth of pipe of light-emitting pipeline reaches optic fibre light-emitting unit slope sets up.

Optionally, the number of the camera avoidance holes is two, the camera avoidance holes are distributed on two sides of the detection station along the vertical direction, and the reflector unit is a double-sided reflecting prism.

Optionally, the number of the optical fiber avoiding holes is two, and the optical fiber avoiding holes are distributed on two sides of the detection station along the horizontal direction.

Optionally, the housing includes two arc-shaped sub-housing units, and a gap between the two arc-shaped sub-housing units forms the optical fiber avoiding hole.

Optionally, the shape of optic fibre light-emitting unit is the cuboid, just the light-emitting face of optic fibre light-emitting unit is the rectangle, optic fibre dodges the hole and is the rectangular hole.

The utility model provides a detection equipment, includes camera unit and last optic fibre reflective arch light source, camera unit set up in outside the casing, and with the camera dodges the relative setting of hole.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model provides an optical fiber reflection type arched light source and detection equipment, it produces light through the light source generator of external casing, utilizes the optic fibre unit to transmit light to optic fibre light-emitting unit, recycles reflection assembly and reflects the light of optic fibre light-emitting unit to the detection station towards the camera and dodges one side in the hole, makes the one end towards the camera unit of the work piece on the detection station illuminated to be convenient for the camera unit to obtain the surface information of work piece through the camera dodge hole; in the structure, the light source generator is arranged outside the shell, so that a heat dissipation structure does not need to be arranged in the shell, namely the heat dissipation structure is not needed to be arranged in the detection equipment for the light emitting source, the brightness of the optical fiber light emitting unit is not limited any more, meanwhile, the two sides of the camera avoiding hole are only provided with the workpiece and the camera unit, the camera unit is not influenced by other heat, and the imaging stability is ensured. To sum up, the utility model discloses an enough and stable formation of image of luminance can be ensured to optic fibre reflective arch light source and check out test set.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

The structure, proportion, size and so on shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification for the understanding and reading of the people skilled in the art, and are not used to limit the limit conditions of the present invention, so that the present invention does not have the essential significance in the technology, and any structure modification, proportion relation change or size adjustment should still fall within the scope covered by the technical content disclosed in the present invention without affecting the function and the achievable by the present invention.

Fig. 1 is a schematic view of an optical path structure of an optical fiber reflective arched light source according to an embodiment of the present invention;

fig. 2 is a schematic front view of an optical fiber reflective arched light source according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is an exploded schematic view of an optical fiber reflective arched light source according to an embodiment of the present invention.

Illustration of the drawings: 01. detecting a station; 10. a housing; 11. a detection cavity; 12. an optical fiber avoidance hole; 13. a camera avoidance hole; 21. a light source generator; 22. an optical fiber unit; 23. an optical fiber light emitting unit; 30. a reflective component; 31. a mirror unit; 32. a reflective layer unit; 33. a sleeve portion; 331. sleeving a pipeline; 332. a light outlet pipeline; 40. a camera unit.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but 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.

In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Referring to fig. 1 to 4, fig. 1 is a schematic view of an optical path structure of an optical fiber reflective arched light source according to an embodiment of the present invention, fig. 2 is a schematic view of a front view structure of an optical fiber reflective arched light source according to an embodiment of the present invention, fig. 3 is a schematic view of a partially enlarged structure of fig. 2 at a, and fig. 4 is a schematic view of an explosion structure of an optical fiber reflective arched light source according to an embodiment of the present invention.

Example one

The optical fiber reflective arched light source provided by the embodiment is applied to a scene of polishing a workpiece, wherein the arched shape refers to that the whole light source is cylindrical, the workpiece can be detected in the cylinder, and the structure of the optical fiber reflective arched light source is optimized, so that the brightness of the optical fiber reflective arched light source is improved, and the imaging of the camera unit 40 is not influenced.

As shown in fig. 1 and fig. 2, the optical fiber reflective arched light source of the present embodiment includes a cylindrical housing 10, a detection cavity 11 is formed in the housing 10, and a detection station 01 is disposed in the detection cavity 11; wherein, check out test set can set up a conveyer belt, with the work piece conveying to on detecting station 01 to be convenient for follow-up polish and detect it. Along the horizontal direction, an optical fiber avoiding hole 12 is formed in the wall of the detection cavity 11 on one side of the detection station 01; along the vertical direction, a camera avoiding hole 13 is formed in the wall of the detection cavity 11 on one side of the detection station 01; wherein, the camera unit 40 can obtain the surface information of the workpiece at the inspection station 01 through the camera escape hole 13. A light source generator 21 is arranged outside the shell 10, the light source generator 21 is connected with an optical fiber unit 22, one end of the optical fiber unit 22 is connected with an optical fiber light emitting unit 23, and the optical fiber light emitting unit 23 penetrates through the optical fiber avoiding hole 12; it should be noted that the light source generator 21 may be a laser, and the light emitted by the light source generator can be transmitted to the optical fiber light-emitting unit 23 through the optical fiber unit 22. Be provided with reflection assembly 30 in the detection cavity 11, reflection assembly 30 is used for the light reflection that sends optic fibre light-emitting unit 23 to detection station 01 towards the one end of camera dodge hole 13, and behind the work piece was lighted up from last down or from down up to light, camera unit 40 can start, from last down or from down up acquireing the surface information of work piece.

Specifically, the optical fiber reflective arched light source generates light through the light source generator 21 externally arranged on the shell 10, the light is transmitted to the optical fiber light emitting unit 23 through the optical fiber unit 22, and the light of the optical fiber light emitting unit 23 is reflected to one side, facing the camera avoiding hole 13, of the detection station 01 through the reflection assembly 30, so that one end, facing the camera unit 40, of the workpiece on the detection station 01 is illuminated, and the camera unit 40 can conveniently acquire surface information of the workpiece through the camera avoiding hole 13; in the above structure, since the light source generator 21 is disposed outside the housing 10, there is no need to provide a heat dissipation structure in the housing 10, that is, there is no need to provide a heat dissipation structure for the light source in the detection device (for example, the light source generator 21 may be disposed outside the detection device, and the light is introduced into the housing 10 through the optical fiber unit 22, and at this time, the heat sink of the light source generator 21 is disposed outside the detection device and is no longer limited by the size of the detection device), so that the brightness of the optical fiber light emitting unit 23 is no longer limited, and meanwhile, the two sides of the camera avoiding hole 13 are only provided with the workpiece and the camera unit 40, and the camera unit 40 is no longer influenced by other heat, thereby ensuring the imaging stability. To sum up, the utility model discloses an enough and stable of formation of image of luminance can be ensured to the reflection-type arch light source of optic fibre.

In a specific embodiment, as shown in fig. 1 to 3, the reflection assembly 30 includes a mirror unit 31 and a reflection layer unit 32; the reflector unit 31 is disposed at one side of the optical fiber light-emitting unit 23, and is configured to reflect light to the reflective layer unit 32; the reflective layer unit 32 is disposed on a wall of the detection cavity 11, and configured to reflect light to an end of the detection station 01 facing the camera avoidance hole 13. Wherein, select for use above-mentioned structure to have the advantage that occupation space is little. In other alternative embodiments, the light-emitting angle of the optical fiber light-emitting unit 23 may be changed to directly illuminate the reflective layer unit 32, but accordingly, when the camera unit 40 is required to be arranged on both sides, an upward inclined optical fiber light-emitting unit 23 and another downward inclined optical fiber light-emitting unit 23 are required to be arranged on one side of the detection station 01.

Further, as shown in fig. 2 and 3, one end of the optical fiber light emitting unit 23 penetrating through the optical fiber avoiding hole 12 is connected with a sleeve portion 33; a socket pipe 331 and a light outlet pipe 332 are formed in the sleeve portion 33; the sleeving pipeline 331 is communicated with the light outlet pipeline 332, one end of the optical fiber light outlet unit 23 is sleeved in the sleeving pipeline 331 and faces towards the light outlet pipeline 332, the reflector unit 31 is installed on the pipe wall of the light outlet pipeline 332, and the inclined surface of the reflector unit 31 is obliquely arranged relative to the pipe orifice of the light outlet pipeline 332 and the optical fiber light outlet unit 23. The sleeve portion 33 is provided to ensure that the light emitted from the optical fiber light emitting unit 23 can be accurately and comprehensively irradiated on the mirror unit 31, thereby improving the light utilization efficiency.

In this embodiment, the number of the camera avoiding holes 13 is two, and the camera avoiding holes are distributed on two sides of the detection station 01 along the vertical direction, and the reflector unit 31 is a double-sided reflection prism, so that the optical fiber reflection type arched light source can detect the upper and lower surfaces of the workpiece simultaneously.

In this embodiment, the number of the optical fiber avoiding holes 12 is two, and the optical fiber avoiding holes are distributed on two sides of the detection station 01 along the horizontal direction. Through the arrangement, light can irradiate on the workpiece from two sides of the detection station 01 through the optical fiber light-emitting unit 23 and the reflection assembly 30, and the surface of the workpiece can be illuminated.

Further, the housing 10 includes two arc-shaped sub-housing units, and a gap between the two arc-shaped sub-housing units forms the optical fiber avoiding hole 12. Because casing 10 comprises two arc subshell units, it can be broken apart and be a plurality of spare parts at the in-process of transportation, the transportation of being convenient for to when installation optic fibre light-emitting unit 23, can put optic fibre light-emitting unit 23 on one of them arc subshell unit, another arc subshell unit of reconnection, make optic fibre light-emitting unit 23 when the installation the degree of difficulty reduce, prevent simultaneously that optic fibre light-emitting unit 23 from taking place in the dead condition of card of optic fibre dodging hole 12.

On the basis of the above embodiment, the shape of the optical fiber light emitting unit 23 is a cuboid, the light emitting surface of the optical fiber light emitting unit 23 is a rectangle, and the optical fiber avoiding hole 12 is a rectangular hole, so that the optical fibers of the optical fiber light emitting unit 23 can uniformly illuminate the inside of the housing 10.

In conclusion, the optical fiber reflective arched light source provided by the embodiment can ensure sufficient brightness and stable imaging of the detection equipment during detection, and meanwhile has the advantages of compact structure, convenience in transportation, convenience in installation and the like.

Example two

The detection apparatus provided in this embodiment includes a camera unit 40 and the optical fiber reflective arched light source in the first embodiment, wherein the camera unit 40 is disposed outside the housing 10 and opposite to the camera avoiding hole 13. The first embodiment describes a specific structure and technical effects of the optical fiber reflective arched light source, and the detection device of the present embodiment uses the structure, and also has the technical effects.

To sum up, the detection device of the embodiment can ensure that when detection is performed, the overall brightness is sufficient, imaging is stable, and meanwhile, the detection device further has the advantages of being compact in structure, convenient to transport, convenient to install and the like.

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

Claims

1. An optical fiber reflection type arched light source is characterized by comprising a shell (10), wherein a detection cavity (11) is formed in the shell (10), and a detection station (01) is arranged in the detection cavity (11);

along the horizontal direction, an optical fiber avoiding hole (12) is formed in one side, located on the detection station (01), of the cavity wall of the detection cavity (11); along the vertical direction, a camera avoiding hole (13) is formed in the wall of the detection cavity (11) on one side of the detection station (01);

a light source generator (21) is arranged outside the shell (10), the light source generator (21) is connected with an optical fiber unit (22), one end of the optical fiber unit (22) is connected with an optical fiber light emitting unit (23), and the optical fiber light emitting unit (23) penetrates through the optical fiber avoiding hole (12);

be provided with reflection assembly (30) in detection cavity (11), reflection assembly (30) are used for with the light reflection that optic fibre light-emitting unit (23) sent extremely detection station (01) orientation the one end of camera dodge hole (13).

2. The fiber optic reflective arched light source of claim 1, wherein the reflective assembly (30) comprises a mirror unit (31) and a reflective layer unit (32); the reflector unit (31) is arranged on one side of the optical fiber light-emitting unit (23) and used for reflecting light rays to the reflecting layer unit (32); the reflection layer unit (32) is arranged on the wall of the detection cavity (11) and used for reflecting light to the detection station (01) towards one end of the camera avoidance hole (13).

3. The fiber-optic reflective arched light source of claim 2, wherein a sleeve portion (33) is connected to one end of the fiber light exit unit (23) passing through the fiber escape hole (12); a sleeve pipe (331) and a light outlet pipe (332) are formed in the sleeve part (33);

socket pipe way (331) with light-emitting pipe way (332) intercommunication, just one pot head of optic fibre light-emitting unit (23) is located socket pipe way (331) is interior, and the orientation light-emitting pipe way (332), speculum unit (31) install in on the pipe wall of light-emitting pipe way (332), the inclined plane of speculum unit (31) respectively for the mouth of pipe of light-emitting pipe way (332) reaches optic fibre light-emitting unit (23) slope sets up.

4. The optical fiber reflective arched light source of claim 3, wherein the number of the camera avoidance holes (13) is two, and the camera avoidance holes are distributed on two sides of the detection station (01) along a vertical direction, and the reflector unit (31) is a double-sided reflecting prism.

5. The optical fiber reflective arched light source of claim 3, wherein the number of the optical fiber avoiding holes (12) is two, and the optical fiber avoiding holes are distributed on two sides of the detection station (01) along a horizontal direction.

6. The fiber optic reflective arched light source of claim 1, wherein the housing (10) comprises two arcuate subcase units, a gap between the two arcuate subcase units forming the fiber relief hole (12).

7. The optical fiber reflective arched light source of claim 1, wherein the optical fiber light emitting unit (23) is rectangular in shape, the light emitting surface of the optical fiber light emitting unit (23) is rectangular, and the optical fiber avoiding hole (12) is a rectangular hole.

8. A detection device comprising a camera unit (40) and the fiber optic reflective arched light source of any of claims 1-7, the camera unit (40) being disposed outside the housing (10) and opposite the camera clearance hole (13).