Machine vision gradient lighting equipment

Abstract

Machine vision gradual change type lighting equipment comprises a shell, a mounting frame is arranged in the shell, and the machine vision gradual change type lighting equipment is characterized in that positioning blocks are symmetrically arranged on the mounting frame, arc-shaped guide grooves are formed in the positioning blocks, arc-shaped mounting plates are slidably connected into the arc-shaped guide grooves, and the two arc-shaped mounting plates are symmetrically arranged and fixedly connected through a connecting rod; at least three strip-shaped light sources are uniformly arranged between the two arc-shaped mounting plates along the trend of the arc surfaces of the arc-shaped mounting plates, and the illumination intensities of the strip-shaped light sources arranged along the trend of the arc surfaces of the arc-shaped mounting plates are gradually increased in sequence. According to the utility model, the plurality of strip-shaped light sources of which the illumination intensities are gradually increased are arranged on the arc-shaped mounting plate, so that the light spots of which the brightness is gradually increased from one side to the other side are formed, and when an object to be measured passes through the light spots, the characteristic part of the object to be measured can be better highlighted, thereby improving the contrast ratio and definition of an image; and the size of the light spot can be adjusted by adjusting the angle of the arc-shaped mounting plate so as to meet the shooting requirements in different scenes.

Description

Technical Field

[0001] This utility model relates to the field of machine vision lighting technology, and in particular to a machine vision gradient lighting device. Background Technology

[0002] Gradual illumination in machine vision inspection is an important technique for improving image quality and inspection accuracy. Gradual illumination gradually adjusts the brightness or intensity of the light source to adapt to the uneven characteristics of the object's surface, thereby reducing the impact of shadows and reflections on inspection.

[0003] However, current gradient lighting requires real-time calculation and adjustment of lighting parameters, which greatly increases the computational burden on the system, places extremely high demands on the performance of the light-emitting elements, and increases equipment costs. At the same time, since the gradient of the light source takes a certain amount of time, it is only suitable for static photography.

[0004] Therefore, in view of the shortcomings of existing technologies, it is necessary to design a machine vision gradient lighting device to solve the above problems.

[0005] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solution of this utility model and facilitating the understanding of those skilled in the art. It should not be assumed that the above content is known to those skilled in the art simply because it has been described in the background section of this utility model. Utility Model Content

[0006] To overcome the shortcomings of the prior art, the present invention discloses a machine vision gradient lighting device to solve the problems of high cost and applicability of traditional gradient lighting devices to machine vision inspection only in static conditions.

[0007] This utility model discloses a machine vision gradient lighting device, including a housing, a mounting frame inside the housing, positioning blocks symmetrically arranged on the mounting frame, each positioning block having an arc-shaped guide groove, an arc-shaped mounting plate slidably connected in each arc-shaped guide groove, two arc-shaped mounting plates symmetrically arranged and fixedly connected by a connecting rod, at least three strip light sources uniformly arranged between the two arc-shaped mounting plates along their arc surface, and the light intensity of the strip light sources arranged along the arc surface of the arc-shaped mounting plates increases sequentially.

[0008] Preferred technical solution: An arc-shaped light-concentrating cover is provided above the arc-shaped mounting plate. The arc-shaped light-concentrating cover is parallel to the arc surface of the arc-shaped mounting plate and has the same curvature to ensure the stability of the light-concentrating effect.

[0009] Preferred technical solution: The two ends of the strip light source are connected to the arc-shaped mounting plate through mounting blocks, and the two ends of the strip light source can be rotatably connected to the mounting blocks in the circumferential direction, which facilitates the adjustment of the illumination angle of the strip light source.

[0010] Preferred technical solution: A light guide plate is provided below the strip light source, and the outer periphery of the light guide plate is detachably installed at the lower opening of the housing to ensure the uniformity of the irradiated light.

[0011] Preferred technical solution: The two sides of the housing are symmetrically provided with a flipping mechanism to facilitate control of the angle of the lighting equipment.

[0012] Preferred technical solution: The housing is provided with several heat dissipation holes to accelerate heat dissipation and prevent heat accumulation from damaging the equipment.

[0013] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0014] This utility model discloses a machine vision gradient lighting device. By setting several strip light sources with progressively increasing light intensity on an arc-shaped mounting plate, it forms a light spot with gradually increasing brightness from one side to the other. When the object under test passes through the light spot, the characteristic parts of the object under test can be better highlighted, thereby improving the contrast and clarity of the image. The size of the light spot can be adjusted by adjusting the angle of the arc-shaped mounting plate to suit the shooting needs of different scenarios. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a machine vision gradient lighting device according to the present invention;

[0017] Figure 2 This is an exploded view of a machine vision gradient lighting device according to the present invention.

[0018] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0019] In the above attached figures, 1 is the housing; 11 is the flipping mechanism; 12 is the heat dissipation hole; 2 is the mounting bracket; 3 is the positioning block; 31 is the arc-shaped guide groove; 4 is the arc-shaped mounting plate; 5 is the connecting rod; 6 is the strip light source; 7 is the arc-shaped light condenser; 8 is the mounting block; and 9 is the light guide plate. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the purposes of describing embodiments of this application herein. Furthermore, the terms "comprising" and "having," and their synonyms, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0023] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0024] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," "fitting," and "fitting" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Similarly, "fitting" can mean completely or partially fitted. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Example:

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a machine vision gradient lighting device, including a housing 1, a mounting frame 2 inside the housing, positioning blocks 3 symmetrically arranged on the mounting frame 2, each positioning block 3 having an arc-shaped guide groove 31, an arc-shaped mounting plate 4 slidably connected in each arc-shaped guide groove 31, two arc-shaped mounting plates 4 symmetrically arranged and fixedly connected by a connecting rod 5, three strip light sources 6 uniformly arranged between the two arc-shaped mounting plates 4 along their arc surface direction, and the light intensity of the three strip light sources 6 arranged along the arc surface direction of the arc-shaped mounting plate 4 increases sequentially.

[0028] refer to Figure 1 , Figure 2 and Figure 3 As shown, the usage method and principle of this utility model are as follows: In use, the three strip light sources 6 on the arc-shaped mounting plate 4 are focused to form an illumination spot. Since the intensity of the three strip light sources 6 increases sequentially, the brightness of the illumination spot generated after the beams of light emitted are focused gradually increases from one side to the other. When the object to be measured passes through the illumination spot, the characteristic parts of the object to be measured can be better highlighted, thereby improving the contrast and clarity of the image. When it is necessary to reduce the illumination range, the arc-shaped mounting plate 4 is slid along the arc-shaped guide groove 31 to change the horizontal distance between the three strip light sources 6, thereby compressing the range of the illumination spot.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, to ensure the stability of the output beam, an arc-shaped focusing cover 7 is provided above the arc-shaped mounting plate 4. The arc-shaped focusing cover 7 is parallel to the arc surface of the arc-shaped mounting plate 4 and has the same curvature, so that the focusing effect will not change after the angle is adjusted.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, to facilitate angle adjustment of the bar light source, both ends of the bar light source 6 are connected to the arc-shaped mounting plate 4 via mounting blocks 8, and both ends of the bar light source 6 can be rotatably connected to the mounting blocks 8 in the circumferential direction.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, in order to ensure the uniformity of light, a light guide plate 9 is provided below the strip light source 6. The outer periphery of the light guide plate 9 is detachably installed at the lower opening of the housing 1. The light guide plate 9 reduces light energy loss and converts the side light source into a surface light source, thereby improving the uniformity of light illumination.

[0032] like Figure 1 , Figure 2 and Figure 3As shown, in order to facilitate the adjustment of the irradiation angle, a flipping mechanism 11 is symmetrically arranged on both sides of the housing 1. The installation angle of the housing is changed by changing the flipping mechanism 11, thereby changing the irradiation angle.

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, in order to improve the heat dissipation effect, the housing 1 is provided with several heat dissipation holes 12, through which the internal hot gas is discharged to avoid heat accumulation and damage to the equipment.

[0034] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A machine vision gradient lighting device, comprising a housing (1), wherein a mounting bracket (2) is provided inside the housing, characterized in that: The mounting bracket (2) is symmetrically provided with positioning blocks (3), each of the positioning blocks (3) is provided with an arc-shaped guide groove (31), and an arc-shaped mounting plate (4) is slidably connected in the arc-shaped guide groove (31). The two arc-shaped mounting plates (4) are symmetrically arranged and fixedly connected by a connecting rod (5). At least three strip light sources (6) are evenly arranged between the two arc-shaped mounting plates (4) along their arc surface direction, and the light intensity of the strip light sources (6) arranged along the arc surface direction of the arc-shaped mounting plate (4) increases sequentially.

2. The machine vision gradient lighting device according to claim 1, characterized in that: An arc-shaped light-concentrating cover (7) is provided above the arc-shaped mounting plate (4). The arc-shaped light-concentrating cover (7) is parallel to the arc surface of the arc-shaped mounting plate (4) and has the same curvature.

3. The machine vision gradient lighting device according to claim 1, characterized in that: The two ends of the strip light source (6) are connected to the arc-shaped mounting plate (4) through the mounting block (8), and the two ends of the strip light source (6) can be rotatably connected to the mounting block (8) in the circumferential direction.

4. The machine vision gradient lighting device according to claim 1, characterized in that: A light guide plate (9) is provided below the strip light source (6), and the outer periphery of the light guide plate (9) is detachably installed at the lower opening of the housing (1).

5. A machine vision gradient lighting device according to claim 1, characterized in that: The shell (1) is symmetrically provided with a flipping mechanism (11) on both sides.

6. The machine vision gradient lighting device according to claim 1, characterized in that: The housing (1) is provided with several heat dissipation holes (12).

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