Compensation device and detection equipment

Abstract

The utility model is suitable for the technical field of sensors, and provides a compensation device and detection equipment. The compensation device comprises a main body support and a lens assembly. The detection equipment comprises a sensor and any one of the compensation devices. During use, the main body bracket is mounted on the sensor, the position of the lens assembly is matched with the position of the transmitting window of the sensor after the main body bracket is mounted, and detection light is refracted through the lens assembly, so that the distance between the focusing position of the detection light and the sensor is reduced; therefore, the purpose of shortening the overall focal length of the sensor system is achieved, detection light emitted by the sensor can be focused in a range closer to the sensor, the application occasion of the sensor is expanded, the sensor can detect a close-range object, and the application scene of the sensor can be wider.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensors, and in particular relates to a compensation device and a detection equipment. Background Art

[0002] A white light sensor is a photoelectric sensor that uses a white LED (light-emitting diode) as a light source. Compared with traditional photoelectric sensors that use red LEDs, white light sensors support detection of various wavelength ranges of visible light. The detection light is emitted by the transmitting unit, and then the reflected light of the object is received by the receiving element to obtain the color information of the object being measured. The white light sensor can adjust the detection range through its own adjustment mechanism, but the existing white light sensors have certain limitations in working distance when in use. For example, the white light sensor can only stably detect within the range of 100mm-500mm. If it is to meet the application scenario of detecting close objects, it can only be considered to be redesigned, which greatly increases the cost. Utility Model Content

[0003] The purpose of the utility model is to provide a compensation device and a detection device, aiming to solve the technical problem that the detection device in the prior art cannot meet the requirements of close-range object detection in specific scenarios.

[0004] The utility model is implemented as follows: in a first aspect, a compensation device is provided, including a main body bracket and a lens assembly, wherein a mounting structure is provided on the main body bracket, and the mounting structure is used to connect the main body bracket to a sensor, and the lens assembly is provided on the main body bracket, and the optical focal length of the lens assembly is positive, and the lens assembly is used to allow the detection light emitted by the sensor to pass through and to converge the detection light.

[0005] In an optional embodiment, a lens barrel is disposed on the main body support, both ends of the lens barrel are open, and the lens assembly is disposed inside the lens barrel.

[0006] In an optional embodiment, the lens assembly includes a biconvex lens located in the lens barrel, and the biconvex lens is fixed on the inner wall of the lens barrel.

[0007] In an optional embodiment, a protective lens is disposed inside the lens barrel, and the protective lens is located on a side of the double convex lens away from the main body support.

[0008] In an optional embodiment, the main body bracket is plate-shaped, and is provided with a light inlet for allowing reflected light to pass through. The main body bracket is also provided with a light outlet for allowing detection light to pass through, and the light inlet and the light outlet are spaced apart from each other.

[0009] In an optional embodiment, the mounting structure includes two clamping members, which are spaced apart along the first direction, and are used to respectively abut against two sides of the sensor to fix the main body bracket to the sensor.

[0010] In an optional embodiment, a clamping protrusion is further provided on the clamping member, and the clamping protrusion is located on the side of the clamping member opposite to the other clamping member.

[0011] In an optional embodiment, the mounting structure further includes two limiting members, the limiting members and the clamping member are located on the same side of the main support, the two limiting members are spaced apart along a second direction, and the second direction is arranged at an angle to the first direction.

[0012] In a second aspect, a detection device is provided, comprising a sensor and a compensation device as described in any one of the above items, and the compensation device is installed on the light-emitting side of the sensor.

[0013] In an optional embodiment, the sensor has a transmitting lens, and the optical axis of the lens assembly is arranged to coincide with the optical axis of the transmitting lens.

[0014] The technical effect of the utility model relative to the prior art is as follows: a mounting structure is provided on the main support, and the main support can be fixed to the sensor through the mounting structure. At the same time, a lens assembly is also provided on the main support, so that the detection light emitted by the sensor can pass through the lens assembly after being emitted, so that the detection light can be focused at a position closer to the sensor. Compared with the prior art, when in use, by installing the main support on the sensor, the position of the lens assembly is matched with the position of the sensor emission window after the main support is installed, and the detection light is refracted by the lens assembly so that the distance between the focus position of the detection light and the sensor is reduced to achieve the purpose of shortening the overall focal length of the sensor system, so that the detection light emitted by the sensor can be focused at a range closer to the sensor, thereby expanding the application scenario of the sensor and enabling the sensor to detect close objects.

[0015] It can be understood that the beneficial effects of the second aspect mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the compensation device provided by the embodiment of the utility model. Figure 1 ;

[0018] Figure 2 It is a schematic diagram of the explosion structure of the compensation device provided by the embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the compensation device provided by the embodiment of the utility model. Figure 2 ;

[0020] Figure 4 It is a structural schematic diagram of a detection device provided by an embodiment of the utility model;

[0021] Figure 5 Schematic diagram of the size of the light spot when the detection light emitted by the detection device provided by the embodiment of the utility model is focused at a distance of 30 mm, wherein the units of the X coordinate and the Y coordinate are both millimeters (mm);

[0022] Figure 6 It is a schematic diagram of the size of the light spot when the detection light emitted by the detection device provided by the embodiment of the utility model is focused at a distance of 50 mm, wherein the units of the X coordinate and the Y coordinate are both millimeters (mm).

[0023] Explanation of the reference numerals: 1. Main bracket; 11. Light outlet; 12. Lens barrel; 13. Light inlet; 2. Lens assembly; 21. Biconvex lens; 22. Protective lens; 3. Mounting structure; 31. Clamping piece; 32. Card-mounting protrusion; 33. Limiting piece; 4. Sensor. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Please refer to Figures 1 to 4 As shown, in an embodiment of the utility model, a compensation device is provided, including a main body bracket 1 and a lens assembly 2. A mounting structure 3 is provided on the main body bracket 1, and the mounting structure 3 is used to fix the main body bracket 1 to the sensor. The lens assembly 2 is provided on the main body bracket 1. The optical focal length of the lens assembly 2 is positive. The lens assembly 2 is used to allow the detection light emitted by the sensor to pass through and to converge the detection light.

[0030] Specifically, the main support 1 refers to a component with a certain volume. The main support 1 can be in the shape of a block, a strip or a plate. The main support 1 can also be a combination of multiple shapes. The mounting structure 3 is arranged on the main support 1 and is used to fix the main support 1 to the sensor. The mounting structure 3 can achieve the connection between the main support 1 and the sensor by clamping the sensor with two components. The mounting structure 3 can also be connected by plugging, fasteners or snap-on. The lens assembly 2 refers to a component that can converge light. The lens assembly 2 can form a system with positive optical power by arranging one or more lens pieces in sequence along the propagation direction of the light. The lens assembly 2 can refract the light through the lens piece to achieve the purpose of changing the focus position of the detection light, thereby shortening the focal length of the detection light. Of course, the lens assembly 2 can also be implemented in other ways, which will not be repeated here.

[0031] The compensation device provided in this embodiment is provided with a mounting structure 3 on the main support 1, which can fix the main support 1 to the sensor. At the same time, a lens assembly 2 is also provided on the main support 1, so that the detection light emitted by the sensor can pass through the lens assembly 2 after being emitted, so that the detection light emitted by the sensor can be focused at a position closer to the sensor. Compared with the prior art, when in use, by installing the main support 1 on the sensor, the position of the lens assembly 2 is matched with the position of the sensor emission window after the main support 1 is installed, and the detection light is refracted by the lens assembly 2 so that the distance between the focus position of the detection light and the sensor is reduced, thereby achieving the purpose of shortening the overall focal length of the sensor system, so that the detection light emitted by the sensor can be focused within a range closer to the sensor, expanding the application scenario of the sensor, and enabling the sensor to detect close objects.

[0032] In one embodiment, Figure 1 As shown, a lens barrel 12 is provided on the main support 1, both ends of the lens barrel 12 are open, and the lens assembly 2 is arranged inside the lens barrel 12. Specifically, the lens barrel 12 refers to a cylindrical component with a certain length, and the inside of the lens barrel 12 is a channel for light to pass through. The lens barrel 12 can be an integrally formed structure with the main support 1; the lens barrel 12 can also be an independent component installed on the main support 1 by pasting, clamping or fastening with fasteners. By arranging the lens assembly 2 inside the lens barrel 12, on the one hand, the lens assembly 2 can be protected by the lens barrel 12, so that the installation of the lens assembly 2 is safer and more stable; on the other hand, the setting of the lens barrel 12 can also prevent external light from interfering with the lens assembly 2, so that the operation of the lens assembly 2 is more stable, thereby improving the detection accuracy of the sensor.

[0033] In an optional embodiment, if Figure 2 As shown, the lens barrel 12 and the main body bracket 1 are integrally formed, and the lens barrel 12 and the main body bracket 1 can be integrally formed by injection molding, so that the installation of the lens barrel 12 is more reliable.

[0034] In one embodiment, Figure 2As shown, the lens assembly 2 includes a biconvex lens 21 located in the lens barrel 12, and the biconvex lens 21 is fixed on the inner wall of the lens barrel 12. Specifically, the biconvex lens 21 refers to a light-transmitting component with both the incident surface and the exit surface convexly arranged, and the biconvex lens 21 can be a lens made of plastic material, which makes the production of the biconvex lens 21 more convenient and the production cost is lower. The biconvex lens 21 can also be made of glass material, which can increase the wear resistance of the surface of the biconvex lens 21 and increase the light transmittance of the lens. The biconvex lens 21 covers the entire cross-section of the inner cavity of the lens barrel 12. When the detection light passes through the lens barrel 12, the biconvex lens 21 can refract the light, and the position of the focus point of the detection light can be changed when the detection light passes through the biconvex lens 21, so that the focus position of the detection light is closer to the sensor, thereby achieving the purpose of shortening the overall focal length of the sensor system, so that the detection light emitted by the sensor can be focused within a range closer to the sensor, thereby expanding the application scenario of the sensor.

[0035] In an optional embodiment, if Figure 2 As shown, a receiving groove for fixing the biconvex lens 21 is also provided on the inner wall of the lens barrel 12. The receiving groove is arranged around the axis of the lens barrel 12, and the edge of the biconvex lens 21 can be accommodated and limited, so that the installation of the biconvex lens 21 inside the lens barrel 12 is more stable and firm.

[0036] Based on the above-mentioned characteristic biconvex lens 21, as Figure 2 As shown, a protective lens 22 is provided inside the lens barrel 12, and the protective lens 22 is located on the side of the biconvex lens 21 away from the main support. Specifically, the protective lens 22 refers to a light-transmitting component that allows light to pass through. The protective lens 22 can be made of glass or other transparent materials. The protective lens 22 is located on the side of the biconvex lens 21 away from the main support, that is, on the outside of the biconvex lens 21 along the propagation direction of the detection light. By protecting the biconvex lens 21 with the protective lens 22, the risk of scratching or damaging the biconvex lens 21 during use can be avoided to a certain extent, making the use of the entire lens assembly 2 safer and increasing the service life.

[0037] In an optional embodiment, if Figure 2 As shown, a pressing part is provided at the end of the lens barrel 12 away from the main support 1, and the protective lens 22 can be pressed and fixed on the end surface of the lens barrel 12 by the pressing part, so that the installation of the protective lens 22 can be more convenient and firm. The pressing part can also be detachably connected to the lens barrel 12, and the protective lens 22 can be detached from the pressing part after the protective lens 22 is damaged, so as to replace a new protective lens 22, which can make the replacement of the protective lens 22 more convenient and quick.

[0038] The pressing part may be a pressing cylinder sleeved at the end of the lens barrel 12, the pressing cylinder sleeved outside the lens barrel 12, and the pressing cylinder is further provided with a pressing part spaced from the end face of the lens barrel 12. The outer wall of the lens barrel 12 and the inner wall of the pressing cylinder may be threadedly connected, and the position of the pressing cylinder itself may be adjusted by rotating the pressing cylinder, thereby adjusting the distance between the pressing part and the end face of the lens barrel 12 to achieve the pressing and fixing of the protective lens 22, so that the installation and fixing of the protective lens 22 may be more convenient and firm.

[0039] In one embodiment, Figure 3 As shown, the main body bracket 1 is in the shape of a plate, and a light inlet 13 for the reflected light to pass through is provided on the main body bracket 1. A light outlet 11 for the detection light to pass through is also provided on the main body bracket 1, and the light inlet 13 and the light outlet 11 are arranged at intervals from each other. Specifically, the main body bracket 1 is in the shape of a plate, which means that the main body bracket 1 is a plate-like component with a certain thickness, and the main body bracket 1 can be covered on the side of the sensor through the mounting structure 3. Among them, setting the main body bracket 1 in the shape of a plate can reduce the space occupied by the main body bracket 1, making the compensation device more compact and light as a whole. At the same time, a light outlet 11 for the detection light to pass through is provided on the main body bracket 1, which can facilitate the detection light of the sensor to enter the lens assembly 2 from the light outlet 11. At the same time, a light inlet 13 for the reflected light to pass through is provided on the main body bracket 1, which can avoid the main body bracket 1 from blocking the receiving window of the sensor, making the sensor more convenient to use.

[0040] In one embodiment, Figure 3 As shown, the mounting structure 3 includes two clamping members 31, which are spaced apart along a first direction, and are used to respectively abut against both sides of the sensor to fix the main support 1 to the sensor. Specifically, the clamping member 31 refers to a component with a certain volume, and the two clamping members 31 are spaced apart along a first direction, and the first direction can be the length direction of the main support 1 or the width direction of the main support 1. By abutting against both sides of the sensor respectively with the two clamping members 31, the connection between the main support 1 and the sensor is achieved by clamping the sensor, which can make it more convenient and quick to install the main support 1 on the sensor.

[0041] In an optional embodiment, if Figure 3 As shown, the clamping members 31 are all plate-shaped, and the clamping members 31 are arranged at an angle with the main support 1, and the angle between the clamping members 31 and the main support 1 can be a right angle. By setting the clamping members 31 to be plate-shaped, the volume occupied by the clamping members 31 can be reduced. At the same time, when the main support 1 is installed, the plate surface of the clamping members 31 can be pressed against the side of the sensor, thereby increasing the contact area between the clamping members 31 and the sensor, thereby making the main support 1 more firmly installed.

[0042] The main support 1 and the clamping member 31 may be an integrally formed structure, and the main support 1 and the clamping member 31 may be integrally formed by injection molding, so that the connection between the clamping member 31 and the main support 1 is more secure.

[0043] In order to make the clamping member 31 clamp the sensor more firmly, Figure 3 As shown, a clamping protrusion 32 is also provided on the clamping member 31, and the clamping protrusion 32 is located on the side of the clamping member 31 opposite to another clamping member 31. Specifically, the clamping protrusion 32 refers to a component with a certain height dimension, and the clamping protrusion 32 can be block-shaped, strip-shaped or hemispherical. By providing the clamping protrusion 32 on the side of the clamping member 31 close to the sensor, and at the same time providing a clamping groove that cooperates with the clamping protrusion 32 on the side of the sensor, when the clamping member 31 contacts the side of the sensor, the clamping protrusion 32 can be clamped into the clamping groove, so that the connection between the main bracket 1 and the sensor can be more firmly established.

[0044] In one embodiment, Figure 3 As shown, the mounting structure 3 also includes two limit members 33. The limit members 33 and the clamping member 31 are located on the same side of the main support 1. The two limit members 33 are spaced apart along the second direction, and the second direction is set at an angle to the first direction. Specifically, the limit member 33 refers to a component with a certain volume, and the limit member 33 can be block-shaped, strip-shaped or plate-shaped. The two limit members 33 are spaced apart along the second direction, and the angle between the second direction and the first direction is generally a right angle. When the main support 1 is connected and installed with the sensor, the two limit members 33 can also be supported on the two side surfaces of the sensor along the second direction. By cooperating with the limit members 33 and the clamping member 31 to limit in multiple directions, the connection between the main support 1 and the sensor can be made more stable and the position more precise.

[0045] In an optional embodiment, if Figure 3 As shown, the stoppers 33 are all plate-shaped, and the stoppers 33 are arranged at an angle with the main support 1, and the angle between the stoppers 33 and the main support 1 is generally a right angle. By setting the stoppers 33 to be plate-shaped, the volume occupied by the stoppers 33 can be reduced. At the same time, when the main support 1 is installed, the plate surface of the stoppers 33 can be pressed against the side of the sensor, thereby increasing the contact area between the stoppers 33 and the sensor, and thus making the main support 1 more firmly installed.

[0046] The main support 1 and the limiting member 33 may be an integrally formed structure, and the main support 1 and the limiting member 33 may be integrally formed by injection molding, so that the connection between the limiting member 33 and the main support 1 is more secure.

[0047] Second, as Figure 4As shown, a detection device is provided, including a sensor 4 and any one of the above compensation devices, the compensation device being installed on the light-emitting side of the sensor 4. It can be understood that the beneficial effects of the above second aspect can refer to the relevant description of the above first aspect, which will not be repeated here.

[0048] In one embodiment, Figure 4 As shown, the sensor 4 has an emission lens, and the optical axis of the lens assembly 2 is arranged to coincide with the optical axis of the emission lens. Specifically, by coinciding the optical axis of the lens assembly 2 with the optical axis of the emission lens, the detection light emitted by the sensor 4 can be more conveniently focused through the lens assembly 2, which can reduce the energy loss of the light during the transmission process and improve the utilization rate.

[0049] In one embodiment, Figure 5 and Figure 6 As shown, the outgoing detection light of the sensor 4 can be focused within the range of 30mm-50mm after passing through the lens assembly 2, which can meet the application scenario of detecting objects within the range of 30mm-50mm at close range. In addition, by adjusting the focal length of the lens assembly, more application scenarios such as 50-100mm can be met, which greatly expands the application scenarios of the sensor.

[0050] The above description is only a preferred embodiment of the utility model, and only specifically describes the technical principle of the utility model. These descriptions are only for explaining the principle of the utility model and cannot be interpreted as limiting the protection scope of the utility model in any way. Based on the explanation here, any modification, equivalent replacement and improvement made within the spirit and principle of the utility model, and other specific implementation methods of the utility model that can be associated with the technicians in this field without creative labor, should be included in the protection scope of the utility model.

Claims

1. A compensation device, characterized in that: It includes a main body bracket and a lens assembly. The main body bracket is provided with a mounting structure, and the mounting structure is used to connect the main body bracket to a sensor. The lens assembly is arranged on the main body bracket, and the optical focal length of the lens assembly is positive. The lens assembly is used to allow the detection light emitted by the sensor to pass through and to converge the detection light.

2. The compensation device according to claim 1, characterized in that: The main body support is provided with a lens barrel, both ends of the lens barrel are open, and the lens assembly is arranged inside the lens barrel.

3. The compensation device according to claim 2, characterized in that: The lens assembly comprises a double convex lens located in the lens barrel, and the double convex lens is fixed on the inner wall of the lens barrel.

4. The compensation device according to claim 3, characterized in that: A protective lens is arranged inside the lens barrel, and the protective lens is located at a side of the double convex lens away from the main body bracket.

5. The compensation device according to claim 2, characterized in that: The main support is plate-shaped, and is provided with a light inlet for reflected light to pass through, and is also provided with a light outlet for detection light to pass through, and the light inlet and the light outlet are spaced apart from each other.

6. The compensation device according to any one of claims 1 to 5, characterized in that: The mounting structure comprises two clamping members, which are arranged at intervals along a first direction, and are used to respectively abut against two sides of the sensor to fix the main body bracket to the sensor.

7. The compensation device according to claim 6, characterized in that The clamping piece is also provided with a clamping protrusion, and the clamping protrusion is located on the side of the clamping piece opposite to the other clamping piece.

8. The compensation device according to claim 7, characterized in that: The mounting structure further includes two limiting members, the limiting members and the clamping member are located on the same side of the main support, the two limiting members are spaced apart along a second direction, and the second direction is arranged at an angle to the first direction.

9. A detection device, characterized in that: It comprises a sensor and a compensation device as claimed in any one of claims 1 to 8, and the compensation device is installed on the light-emitting side of the sensor.

10. The detection device according to claim 9, characterized in that The sensor has a transmitting lens, and the optical axis of the lens assembly is arranged to coincide with the optical axis of the transmitting lens.

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