The subject matter herein generally relates to electronic and optical devices, and more particularly, to a detection device.
Before products are manufactured in mass production, detection devices are used to detect the quality of each product.
In use, the detection device acquires images of a product, and uses various types of image processing algorithms to analyze the images to determine whether the product has unqualified appearance (such as surface defects). To acquire an image of the product, a light source is needed to illuminate the product. However, the light source may generate heat as well as light. The heat may reach the detection module of the detection device, thereby affecting the operation and accuracy of the detection module, even resulting in failure of the detection module.
Therefore, there is room for improvement in the art.
Implementations of the present technology will now be described, by way of embodiment, with reference to the attached figures.
It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures, and members have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure.
The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the like.
Referring to
Referring to
The sidewall 12 includes a first portion 121 close to the top wall 11 and a second portion 122 away from the top wall 11. The light source 30 is disposed on the second portion 122. The sidewall 12 may also include a connecting portion 123 connecting the first portion 121 to the second portion 122. The first portion 121 is between the top wall 11 and the connecting portion 123. An included angle between the first portion 121 and the connecting portion 123 is in a range of 0 degree to 180 degrees. An included angle between the connecting portion 123 and the second portion 122 is in a range of 0 degree to 180 degrees. As such, the cover 10 achieves a better effect of light converging. In at least one embodiment, the included angle between the first portion 121 and the connecting portion 123 is in a range of 60 degrees to 120 degrees, and the included angle between the connecting portion 123 and the second portion 122 is in a range of 60 degrees to 120 degrees. In at least one embodiment, the included angle between the connecting portion 123 and the second portion 122 is 90 degrees. As such, the cover 10 achieves a better effect of light converging. Furthermore, a distance between the top wall 11 and the second portion 122 is increased. That is, a distance between the detection module 20 and the light source 30 on the cover 10 is increased. Thus, heat transferred to the detection module 20 from the light source 30 is reduced.
In at least one embodiment, the first portion 121 is a frustum of a pyramid, and the second portion 122 is a polygon.
The detection module 20 includes a camera 21 and an electric control component 22 electrically connected to the camera 21. The camera 21 receives the light reflected by the product and forms an image accordingly. The electric control component 22 receives and analyzes the image to determine characteristic information (such as surface defects) of the product. A control module 50 is also disposed outside the cover 10. The control module 50 is electrically connected to the detection module 20 and the light source 30, and used to control the working state of the detection module 20 and the light source 30.
Referring to
Referring to
In at least one embodiment, a number of heat dissipation holes 15 are defined in the first portion 121. The heat dissipation holes 15 enhance air circulation between the receiving cavity 13 and the ambient environment, thereby dissipate heat generated by the light source 30. Furthermore, the heat dissipation holes 15 block a portion of the heat generated by the light source 30 from being transferred to the detection module 20.
Referring to
Referring to
With the above configuration, the detection module 20 is disposed on the top wall 11 of the cover 10, and the light source 30 is disposed on the second portion 122 of the sidewall 12 away from of the top wall 11. As such, the distance between the light source 30 and the detection module 20 is increased, that is, the path for the delivery of heat from the light source 30 to the detection module 20 is lengthened. Therefore, when heat is accumulated on the light source 30, during the transfer of heat from the light source 30 to the detection module 20, a large portion of the heat is dissipated into air, thereby reducing the heat transferred to the detection module 20. Moreover, the cover 10 increases the contact area between the light source 30 and the air, and thus allowing the heat from the light source 30 to be dissipated into the receiving cavity 13. Thus, the heat dissipation efficiency is improved, thereby reducing risk of heat-derived malfunction of the detection module 20.
Even though information and advantages of the present embodiments have been set forth in the foregoing description, together with details of the structures and functions of the present embodiments, the disclosure is illustrative only. Changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the present embodiments to the full extent indicated by the plain meaning of the terms in which the appended claims are expressed.
Number | Date | Country | Kind |
---|---|---|---|
202110691633.1 | Jun 2021 | CN | national |