CN218481422U - Double-light-path detection device and system - Google Patents
Double-light-path detection device and system Download PDFInfo
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- CN218481422U CN218481422U CN202222587881.4U CN202222587881U CN218481422U CN 218481422 U CN218481422 U CN 218481422U CN 202222587881 U CN202222587881 U CN 202222587881U CN 218481422 U CN218481422 U CN 218481422U
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Abstract
The utility model relates to a machine vision technical field discloses a double light path detection device and system. The dual light path detection device includes: the light path separation component comprises a first light source, a second light source and a light path separation component, wherein the first light source is used for emitting first detection light, the second light source is used for emitting second detection light, the light path separation component comprises a first light splitting device, a second light splitting device and a third light splitting device, and the first light source and the second light source are different types of light sources; the first detection light is emitted to the surface to be detected through the first light splitting device and the second light splitting device, reflected by the surface to be detected, and emitted along the first path after passing through the second light splitting device and the third light splitting device; the second detection light is emitted to the surface to be detected through the first light splitting device and the second light splitting device, then is reflected by the surface to be detected, and is emitted along a second path through the third light splitting device. The light path separation component is arranged to realize the separation of the detection light paths, so that the simultaneous imaging of the two detection light paths can be realized simultaneously, and the detection efficiency can be improved while the detection cost is controlled.
Description
Technical Field
The utility model relates to a machine vision technical field especially relates to a double light path detection device and system.
Background
With the development of machine vision imaging technology, machine vision equipment is required to detect defects in the production process of products so as to ensure the quality of the products. The detection principle of the machine vision system is as follows: the method comprises the steps of utilizing a light source to irradiate a workpiece to be detected, then shooting the workpiece to be detected through an image shooting device, converting the workpiece to be detected into an image signal, transmitting the image signal to an image processing system, converting the image signal into a digital signal, and finally carrying out operation processing on the signals to finally obtain a detection result.
For precision workpieces such as chips, the detection needs to be performed under different light conditions to obtain different image signals, so as to detect different defect characteristics. At present, for the precision workpieces, a group of visual imaging devices needs to be arranged for each detection light condition, so that the detection cost is high, the detection efficiency is low, and the mass production of products is difficult to realize.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a double light path detection device and system solves among the prior art when detecting accurate work piece, need set up a set of vision imaging device respectively to every kind of detection light condition, leads to the detection cost higher, and detection efficiency is lower simultaneously, is difficult to realize the batch production's of product problem.
In order to achieve the above object, the present invention provides the following technical solutions:
a dual optical path inspection device for inspecting a surface under inspection, comprising:
the light source assembly comprises a first light source and a second light source, wherein the first light source is used for emitting first detection light, the second light source is used for emitting second detection light, and the first light source and the second light source are different types of light sources;
the optical path separation component comprises a first light splitting device, a second light splitting device and a third light splitting device;
after the first detection light is transmitted by the first light splitting device, part of the first detection light is reflected to a measured surface by the second light splitting device, and after the first detection light is reflected by the measured surface, the first detection light is emitted along a first path through the transmission of the second light splitting device and the reflection of the third light splitting device to form first emergent light;
the second detection light is reflected by the first light splitting device and then enters the second light splitting device, part of the second detection light is reflected by the second light splitting device and then enters the surface to be detected, and after being reflected by the surface to be detected, the second detection light is transmitted by the third light splitting device and then exits along a second path to form second emergent light.
Optionally, the dual light path detecting device further includes a first camera for receiving the first outgoing light, and a second camera for receiving the second outgoing light.
Optionally, the dual light path detection apparatus further includes a reflection device, where the reflection device is disposed on the first path and is configured to reflect the first emergent light into the first camera.
Optionally, the first detection light enters a first incidence surface of the first light splitting device, and a first coating is disposed on the first incidence surface and can completely penetrate through the first detection light.
Optionally, the second detection light is incident to a second incident surface of the first light splitting device, and a second coating film is disposed on the second incident surface and can completely reflect the second detection light.
Optionally, the first detection light and the second detection light are both incident on a third incident surface of the second light splitting device; and a third coating is arranged on the third incidence surface, and can simultaneously transmit part of the first detection light and the second detection light and reflect part of the first detection light and the second detection light.
Optionally, the first detection light and the second detection light are both incident on a fourth incident surface of the third light splitting device;
and a fourth coating is arranged on the fourth incidence surface and can only penetrate through the second detection light.
Optionally, the first light source is an infrared light source, and the first camera is an infrared camera.
Optionally, the second light source is a red light source, and the second camera is a red camera.
The utility model also provides a dual light path detecting system, include as above arbitrary dual light path detecting device.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a double-light-path detection device and system detects a light path separation subassembly through making first detection light and second detection light share, finally jets out radially outward along first route and second path respectively, has realized the separation that detects the light path to can realize imaging when two detection light paths simultaneously, be favorable to improving detection efficiency in the control detection cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below 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 labor.
Fig. 1 is a cross-sectional view of a dual light path detection device provided by the present invention;
fig. 2 is a schematic view of a partial structure of a dual optical path detection apparatus provided by the present invention.
In the above figures: 10. a light source housing; 101. detecting a window; 102. a first shooting window; 103. a second shooting window; 11. a first light source; 12. a second light source; 21. a first light splitting device; 211. a first incident surface; 212. a second incident surface; 22. a second light splitting device; 221. a third incident surface; 23. a third light splitting device; 231. a fourth incident surface; 24. a reflective device; 241. a reflective surface; 31. a first camera, 32, a second camera.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments of 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 is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have the specific orientation, operate in the specific orientation configuration, and thus, should not be construed as limiting the present invention.
In the prior art, for the defect detection of precise workpieces, a group of visual imaging equipment needs to be respectively arranged for each detection light condition, so that the detection cost is high, the detection efficiency is low, and the mass production of products is difficult to realize. In order to solve the above problems, the present invention provides the following technical solutions, which are further described below by referring to the accompanying drawings and specific embodiments.
Referring to fig. 1 and fig. 2, an embodiment of the present invention provides a dual optical path detection apparatus, including:
the light source assembly comprises a first light source 11 for emitting first detection light and a second light source 12 for emitting second detection light, wherein the first light source 11 and the second light source 12 are different types of light sources;
and the optical path separation component comprises a first light splitting device 21, a second light splitting device 22 and a third light splitting device 23.
After the first detection light is transmitted by the first light splitting device 21, part of the first detection light is reflected to a detected surface by the second light splitting device 22, and after the first detection light is reflected by the detected surface, the first detection light is emitted along a first path through the transmission of the second light splitting device 22 and the reflection of the third light splitting device 23 to form first emergent light;
the second detection light is reflected by the first light splitting device 21 and then enters the second light splitting device 22, and part of the second detection light is reflected by the second light splitting device 22 and then enters the surface to be detected, and after being reflected by the surface to be detected, the second detection light is transmitted by the third light splitting device 23 and then exits along a second path to form second exit light.
In this embodiment, the dual light path detecting device further includes a first camera 31 for receiving the first emergent light, and a second camera 32 for receiving the second emergent light.
As an alternative embodiment, the first light source 11 is an infrared light source, and the first camera 31 is an infrared camera.
In an alternative embodiment, the second light source 12 is a red light source and the second camera 32 is a red camera.
In the present embodiment, the first light splitting device 21 includes a first incident surface 211 and a second incident surface 212.
The first detection light enters the first incident surface 211 of the first light splitting device 21, and the first light splitting device 21 is coated with a first coating film, so that the first incident surface 211 can completely transmit the first detection light;
the second detection light is incident on the second incident surface 212 of the first light splitter 21, and the first light splitter 21 is coated with a second coating film, so that the second incident surface 212 can completely reflect the second detection light.
Therefore, the first detection beam and the second detection beam enter the first light splitter 21 from different incidence surfaces, but can finally exit the first light splitter 21 in the same direction.
It can be understood that, since the first light source 11 and the second light source 12 are different types of light sources, that is, the wavelength ranges of the first light source and the second light source are different, the first coating and the second coating are respectively and correspondingly disposed according to the respective wavelengths of the first light source and the second light source, so that the first incident surface 211 can completely transmit the first detection light and the second incident surface 212 can completely reflect the second detection light.
Further, the first detection light and the second detection light are both incident on the third incident surface 221 of the second light splitting device 22;
the second beam splitter 22 is formed by combining two triangular prisms, the third incident surface 221 is coated with a third coating film, and the third coating film is a beam splitting coating film, has a semi-transparent and semi-reflective function, and can simultaneously transmit and refract a part of the first detection light and a part of the second detection light, so that a part of the first detection light and a part of the second detection light are simultaneously reflected by the second beam splitter 22 and incident on the surface to be detected.
It is understood that, according to the wavelength ranges of the first light source 11 and the second light source 12, the spectral coating film capable of simultaneously realizing the half-transmitting and half-reflecting effect on the first detection light and the second detection light is selected.
In addition, the third light splitter 23 is formed by combining two triangular prisms, and the first detection light and the second detection light are both incident on the fourth incident surface 231 of the third light splitter 23; the fourth incident surface 231 is plated with a fourth plating film, and can completely reflect the first detection light and completely transmit the second detection light.
It is understood that the fourth coating may be an infrared filter. For example, in the embodiment, the first light source 11 is an infrared light source, the second light source 12 is a red light source, and the fourth coating uses an infrared filter, so that red light can be selectively transmitted and infrared light reflected, or infrared light is transmitted and red light is reflected, thereby achieving the effect of light path separation,
based on this, the optical path principles of the first detection light and the second detection light are as follows:
1) The first detection light is transmitted by the first light splitting device 21, reflected to a detected surface by the second light splitting device 22, reflected by the detected surface, transmitted by the second light splitting device 22 and reflected by the third light splitting device 23, and emitted along a first path;
2) The second detection light beam is reflected by the first light splitting device 21 and the second light splitting device 22, then enters the surface to be detected, is reflected by the surface to be detected, and then is transmitted by the third light splitting device 23 and then exits along the second path.
In this embodiment, the dual optical path detecting apparatus further includes a reflecting device 24, and the reflecting device 24 is disposed on the first path and includes a reflecting surface 241 for reflecting the first detecting light to the first camera 31. The reflecting surface 241 is plated with a fifth plating film, and the type of the fifth plating film is set corresponding to the wavelength of the first detection light, so that the first detection light can be reflected.
By arranging the reflection device 24, the light beams emitted along the first path and the second path are parallel light beams, so that the first camera 31 and the second camera 32 can be arranged on the same side, and only the relative heights of the first camera 31 and the second camera 32 need to be adjusted simultaneously during assembly, and the optical axes of the two cameras are respectively positioned on the first path and the second path, so that the assembly process can be simplified, and the occupied space of the double-light-path detection device can be saved.
It is understood that the dual light path detecting apparatus further includes a light source housing 10, and the light source assembly, the light path separating assembly and the reflecting device 24 are disposed in the light source housing 10.
A detection window 101 is arranged on the light source shell 10, and the surface to be detected is arranged in alignment with the detection window 101; the light source housing 10 is further provided with a first shooting window 102 and a second shooting window 103, the first camera 31 is aligned with the first shooting window 102, and the second camera 32 is aligned with the second shooting window 103.
Based on the foregoing embodiment, the present invention further provides a dual optical path detection system, which includes the dual optical path detection device as described in any one of the above embodiments, and further includes an image processing system, where the image processing system is configured to convert the images captured by the first camera 31 and the second camera 32 into digital signals, and perform operation processing on the signals, so as to obtain the detection result.
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 (10)
1. A dual beam inspection apparatus for inspecting a surface under inspection, comprising:
-a light source assembly comprising a first light source (11) for emitting a first detection light, and a second light source (12) for emitting a second detection light, said first light source (11) and said second light source (12) being different types of light sources;
an optical path splitting assembly including a first light splitting device (21), a second light splitting device (22), and a third light splitting device (23);
after the first detection light is transmitted by the first light splitting device (21), part of the first detection light is reflected to a detected surface by the second light splitting device (22), and after the first detection light is reflected by the detected surface, the first detection light is emitted along a first path through the transmission of the second light splitting device (22) and the reflection of the third light splitting device (23) to form first emergent light;
the second detection light is reflected by the first light splitting device (21) and then enters the second light splitting device (22), part of the second detection light is reflected by the second light splitting device (22) and then enters the surface to be detected, and after being reflected by the surface to be detected, the second detection light is transmitted by the third light splitting device (23) and then exits along a second path to form second emergent light.
2. A dual light path detection device as claimed in claim 1, further comprising a first camera (31) for receiving the first outgoing light ray, and a second camera (32) for receiving the second outgoing light ray.
3. A dual light path detector apparatus as claimed in claim 2, further comprising a reflecting device (24), the reflecting device (24) being disposed on the first path and comprising a reflecting surface for reflecting the first outgoing light rays into the first camera (31).
4. A dual light path detecting device according to claim 2, wherein the first detecting light is incident on the first incident surface (211) of the first light splitter (21), and the first incident surface (211) is provided with a first coating film capable of transmitting the first detecting light completely.
5. A dual light path detecting device according to claim 2, wherein the second detecting light is incident on the second incident surface (212) of the first light splitting device (21), and the second incident surface (212) is provided with a second coating film capable of completely reflecting the second detecting light.
6. A dual light path detecting device according to claim 2, wherein the first detecting light and the second detecting light are both incident on a third incident surface (221) of the second light splitter (22); the third incidence surface (221) is provided with a third coating film which can simultaneously transmit part of the first detection light and the second detection light and reflect part of the first detection light and the second detection light.
7. The dual light path detecting device according to claim 2, wherein the first detecting light and the second detecting light are both incident on a fourth incident surface (231) of the third light splitter (23);
and a fourth coating is arranged on the fourth incidence surface (231) and can only penetrate through the second detection light.
8. A dual light path detection device as claimed in claim 2, wherein the first light source (11) is an infrared light source and the first camera (31) is an infrared camera.
9. A dual light path detection device according to claim 2, wherein the second light source (12) is a red light source and the second camera (32) is a red camera.
10. A dual light path detection system comprising the dual light path detection device of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222587881.4U CN218481422U (en) | 2022-09-28 | 2022-09-28 | Double-light-path detection device and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222587881.4U CN218481422U (en) | 2022-09-28 | 2022-09-28 | Double-light-path detection device and system |
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| CN218481422U true CN218481422U (en) | 2023-02-14 |
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| CN202222587881.4U Active CN218481422U (en) | 2022-09-28 | 2022-09-28 | Double-light-path detection device and system |
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