CN215215871U

CN215215871U - Multipurpose combined light source

Info

Publication number: CN215215871U
Application number: CN202121191563.5U
Authority: CN
Inventors: 吴选胜; 彭勇; 刘向辉
Original assignee: Moritex Technologies Shenzhen Co Ltd
Current assignee: Moritex Technologies Shenzhen Co Ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-12-17
Anticipated expiration: 2031-05-31

Abstract

The utility model discloses a multipurpose combined light source, which comprises a shell, wherein a transparent diffusion plate is fixedly arranged in the shell, the outer wall of the diffusion plate is provided with a step surface, the inner wall of the shell and the step surface form a cavity, and a first lamp plate component is fixedly arranged in the cavity; the fixed second lamp plate subassembly that is equipped with in below of first lamp plate subassembly, second lamp plate subassembly with casing fixed connection, the inner wall of diffuser plate is equipped with the big inclined plane about the cross section is big end down. The utility model discloses can satisfy two kinds of modes of shining simultaneously, realize that one set of light source detects the surface and the profile of testee, promote the applied scene of light source. On the other hand, the detected object does not need to be installed again on the detection contour and the surface, the reference number of the two sets of data is the same, the obtained detection data are more accurate, and the detection accuracy of the device is improved.

Description

Multipurpose combined light source

Technical Field

The utility model relates to a machine vision field, more specifically relate to a combined light source of multipurpose.

Background

The machine vision is to use the optical-electro device to replace human eyes to measure and judge, convert the measured target into image signal through the system composed of camera lens light source, transmit to the computer image processing system, and convert into digital signal according to the information of pixel, etc.; the image processing system performs various calculations on the signals to obtain the characteristics of the target, and further controls various actions required on site according to the result of the discrimination.

Machine vision is characterized by improving the production automation degree. In some dangerous working environments which are not suitable for manual operation or occasions where the requirements of manual vision are difficult to meet, a machine vision system is commonly used for replacing the manual vision; the machine vision method can greatly improve the production efficiency and the automation degree of production.

Illumination is an important factor affecting machine vision system input, and it directly affects the quality and application effect of input data. At present, structured lighting is mainly used, and a light source directly or indirectly irradiates on the surface of an object.

One suitable light source is a prerequisite for proper operation of the machine vision inspection system. The purpose of using the light source is to respectively and obviously distinguish the object to be measured and the background as much as possible to obtain images with high quality and high contrast; 'freezing' the moving object on the image; enhancing the definition of the edge of the target to be detected and eliminating the shadow; the noise is cancelled.

Currently, in order to meet the requirements of machine vision for illuminating different scenes and different purposes, machine vision illumination light sources can be roughly classified into the following types: annular light sources, bar light sources, unshaded light sources, backlights, analog coaxial light sources, point light sources, and the like. However, these types of light sources are currently only capable of meeting a single or specific scenario, and are also single or specific in function; the requirement that one light source is suitable for multiple application scenes at the same time cannot be met; when various product parameters need to be detected simultaneously, the light source is often replaced or the products to be detected are respectively installed on different detection platforms, so that time and labor are wasted; and due to the influences of factors such as installation positions and detection environments, data detected for multiple times are difficult to avoid to have deviation and difficult to correspond to each other, so that the detected data are inaccurate.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that a plurality of application scenes can't be satisfied simultaneously to a light source, the utility model provides a combined light source of multipurpose to specifically provide following technical scheme:

a multipurpose combined light source comprises a shell, wherein a transparent diffusion plate is fixedly arranged in the shell, the outer wall of the diffusion plate is provided with a step surface, the inner wall of the shell and the step surface form a cavity, and a first lamp panel assembly is fixedly arranged in the cavity; the fixed second lamp plate subassembly that is equipped with in below of first lamp plate subassembly, second lamp plate subassembly with casing fixed connection, the inner wall of diffuser plate is equipped with the big inclined plane about the cross section is big end down.

Further, a first heat-conducting fin is fixedly arranged in the cavity and is tightly attached to the first lamp panel assembly and the shell respectively.

Further, a second heat-conducting fin is fixedly arranged in the shell, and the second heat-conducting fin is tightly attached to the second lamp panel assembly and the shell respectively.

Further, the shell comprises an upper shell, a middle shell and a lower shell, and the middle shell is fixedly connected with the upper shell and the lower shell respectively; the diffuser plate outer wall with the inner wall of epitheca constitutes the cavity, the second lamp plate subassembly with inferior valve fixed connection.

Furthermore, the included angle between the inclined surface of the inner wall of the diffusion plate and the central axis of the shell is 30-85 degrees.

Further, the diffusion plate is made of acrylic.

Furthermore, the outer wall surface of the diffusion plate is provided with a sand blasting layer.

Further, including the control scheme board, first lamp plate subassembly with second lamp plate subassembly respectively with the control scheme board links to each other.

Further, first lamp plate subassembly includes a plurality of bright field lamp pearls, a regular geometric figure is constituteed to bright field lamp pearl, bright field lamp pearl array divides into a plurality of bright field detection regions, every bright field detection region links to each other with the control scheme board respectively.

Further, the second lamp panel assembly comprises a plurality of dark field lamp beads, the dark field lamp beads form a regular geometric figure, the dark field lamp bead array is divided into a plurality of dark field detection areas, and each dark field detection area is connected with the control circuit board respectively.

The utility model discloses set up first lamp plate subassembly and second lamp plate subassembly and can satisfy two kinds of modes of shining simultaneously, realize that one set of light source detects the surface and the profile of measured object, promoted the applied scene of light source. On the other hand, the detected object does not need to be installed again on the detection contour and the surface, the reference number of the two sets of data is the same, the obtained detection data are more accurate, and the detection accuracy of the device is improved. The utility model discloses with bright field lamp pearl and dark field lamp pearl have divided into a plurality of independent detection regions respectively, through control scheme board independent control, can eliminate illumination light mutual interference between the different regions when special application scene, satisfy each local region of testee and detect the requirement under the special circumstances.

Drawings

FIG. 1 is a schematic view of the exploded structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic view of the bright field and dark field detection zones of the present invention.

Reference numerals: 1. a housing; 11. an upper shell; 12. a middle shell; 13. a lower case; 2. a diffusion plate; 21. a step surface; 22. an inclined surface; 3. a cavity; 4. a first lamp panel assembly; 41. bright field lamp beads; 5. a first thermally conductive sheet; 6. a second lamp panel assembly; 61. a dark field lamp bead; 7. a second thermally conductive sheet.

Detailed Description

To further illustrate the technical means and technical effects of the present invention, the following describes a preferred embodiment of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 4, a multipurpose combined type light source includes a housing 1 including an upper case 11, a middle case 12 and a lower case 13; wherein, the middle shell 12 is fixedly connected with the upper shell 11 and the lower shell 13 through screws. The diffusion plate 2 is fixedly arranged in the upper shell 11, and the diffusion plate 2 is made of transparent acrylic materials. The outer wall of diffuser plate 2 is equipped with step face 21, and confined cavity 3 is constituteed with the inner wall of epitheca 11 to step face 21, and the cavity 3 internal fixation is equipped with first lamp plate assembly 4 and first conducting strip 5, and first lamp plate assembly 4 links to each other with the control scheme board, and the upper and lower surface of first conducting strip 5 closely laminates with the inner wall of first lamp plate assembly 4 and epitheca 11 respectively. When first lamp plate assembly 4 work generates heat, the heat transmits upper shell 11 through first conducting strip 5, and then transmits the device outside, dispels the heat to first lamp plate assembly 4. In the present embodiment, the multipurpose combined light source is in a cylindrical shape as a whole, but it is obvious that light source structures of other geometric shapes are also applicable to the present invention, for example, a rectangular parallelepiped, a cube, a circular truncated cone shape, and the like.

The inner wall of the diffusion plate 2 is provided with a truncated cone-shaped inclined surface 22 with a small upper part and a big lower part, the included angle between the inclined surface 22 and the central axis of the upper shell 11 ranges from 30 degrees to 85 degrees, and the outer wall of the diffusion plate 2 is provided with a sand blasting layer. During operation, the measured object is fixed in the below of first lamp plate subassembly 4, and the light that first lamp plate subassembly 4 sent shines on diffuser plate 2, and the centre of a circle direction of 11 shells diverges after the refraction of diffuser plate 2, then shines the surface of measured object, obtains the image of measured object upper surface, and then detects it.

13 internal fixation of inferior valve is equipped with second lamp plate subassembly 6 and second conducting strip 7, and second lamp plate subassembly 6 links to each other with the control scheme board, and second conducting strip 7 closely laminates with the inner wall of second lamp plate subassembly 6 and inferior valve 13 respectively. When second lamp plate assembly 6 work generates heat, the heat passes through second conducting strip 7 and transmits to inferior valve 13, and then transmits the device outside, dispels the heat to second lamp plate assembly 6. During operation, the measured object is fixed under second lamp panel assembly 6 spare, and the light that second lamp panel assembly 6 sent shines on the measured object, can shine out the complete profile of measured object, obtains the image of measured object profile, and then detects it.

As shown in fig. 5, the first lamp panel assembly 4 includes 200 bright field beads 41, and the bright field beads 41 are arranged in an array to form a closed circular pattern. In other embodiments, the bright field beads 41 may also form other regular geometric figures, such as rectangles, polygons, pentagons, or ellipses. All bright field bead 41 arrays are divided into 4 bright field detection zones CH1-CH4, each covering a 90 ° detection zone. Each bright field detection area is connected with the control circuit board respectively, and the control circuit board independently controls the working state of each bright field detection area respectively. When it is necessary to detect an object to be detected in a certain area, for example: detecting the convex points, the grooves and the like on the detected object; the bright field lamp beads in one or more bright field detection areas are controlled to work only through the control circuit board.

The second lamp panel assembly 6 comprises 100-plus-200 dark field lamp beads 61, and the dark field lamp beads 61 are arranged in an array to form a closed circular pattern. In other embodiments, the darkfield beads 61 may also be formed in other regular geometric shapes, such as rectangular, polygonal, pentagonal, or elliptical shapes. All the dark field lamp bead 61 arrays are divided into 4 dark field detection zones CH5-CH8, each covering a detection zone of 90 °. Each dark field detection area is connected with the control circuit board respectively, and the control circuit board independently controls the working state of each dark field detection area respectively. When it is necessary to detect a local side of a certain object to be detected, for example: detecting the edge profile and the like of the detected object; the dark field lamp beads in one or more dark field detection areas are controlled by the control circuit board to work.

The bright field detection area and the dark field detection area which are controlled independently are arranged, so that mutual interference of illumination light among different detection areas can be eliminated in a special application scene, and the detection requirements of each local area of a detected object under special conditions are met. In other embodiments, the bright field beads 41 and the dark field beads 61 may be divided into any other number of detection zones that are independently controlled.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

1. A multipurpose combined light source is characterized by comprising a shell, wherein a transparent diffusion plate is fixedly arranged in the shell, a step surface is arranged on the outer wall of the diffusion plate, a cavity is formed by the inner wall of the shell and the step surface, and a first lamp panel assembly is fixedly arranged in the cavity;

the fixed second lamp plate subassembly that is equipped with in below of first lamp plate subassembly, second lamp plate subassembly with casing fixed connection, the inner wall of diffuser plate is equipped with the big inclined plane about the cross section is big end down.

2. The multi-purpose combination-type light source of claim 1, wherein a first heat conducting fin is fixedly disposed in the cavity, and the first heat conducting fin is respectively in close contact with the first lamp panel assembly and the housing.

3. The multi-purpose combination-type light source of claim 1, wherein a second heat conducting fin is fixedly disposed in the housing, and the second heat conducting fin is respectively attached to the second lamp panel assembly and the housing.

4. The multipurpose combination light source according to any one of claims 1 to 3, wherein said housing comprises an upper housing, a middle housing and a lower housing, said middle housing being fixedly connected to said upper housing and said lower housing, respectively;

the diffuser plate outer wall with the inner wall of epitheca constitutes the cavity, the second lamp plate subassembly with inferior valve fixed connection.

5. The multi-purpose combination light source of claim 1, wherein the inclined surface of the inner wall of the diffuser plate forms an angle of 30 ° to 85 ° with the central axis of the housing.

6. The multipurpose combination light source according to claim 1, wherein the material of the diffusion plate is acryl.

7. The multipurpose combination light source according to claim 1, wherein an outer wall surface of the diffusion plate is provided with a sand blast layer.

8. The multi-purpose combination-type light source of claim 1, further comprising a control circuit board, the first and second lamp panel assemblies being connected to the control circuit board, respectively.

9. The multi-purpose combination light source of claim 8, wherein the first light panel assembly comprises a plurality of bright field light bulbs, the bright field light bulbs forming a regular geometric figure, the array of bright field light bulbs divided into a plurality of bright field detection zones, each of the bright field detection zones respectively connected to the control circuit board.

10. The multi-purpose combination light source of claim 8, wherein the second light panel assembly comprises a plurality of darkfield beads organized in a regular geometric pattern, the array of darkfield beads divided into a plurality of darkfield detection zones, each of the darkfield detection zones connected to the control circuit board.