CN219179194U

CN219179194U - Polarized light source device and visual detection equipment

Info

Publication number: CN219179194U
Application number: CN202223442967.4U
Authority: CN
Inventors: 张子浩
Original assignee: Guangdong OPT Machine Vision Co Ltd
Current assignee: Guangdong OPT Machine Vision Co Ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-06-13
Anticipated expiration: 2032-12-21

Abstract

The utility model relates to the technical field of visual detection, and particularly discloses a polarized light source device and visual detection equipment, wherein the polarized light source device comprises an annular light source, an annular rotating ring rotationally connected with the top of the annular light source and a circular polarizer arranged on the annular rotating ring; the middle positions of the annular light source and the annular rotating ring are respectively provided with a hollow space for light to pass through. The polarized light source device and the visual detection equipment provided by the utility model can be adapted to shooting assemblies with various sizes and specifications.

Description

Polarized light source device and visual detection equipment

Technical Field

The utility model relates to the technical field of visual detection, in particular to a polarized light source device and visual detection equipment.

Background

When a workpiece is visually inspected by using a photographing device such as a camera or a lens, it is often necessary to perform polishing by using a light source device. Because the surface of part of the workpiece is smoother, serious reflection problems exist after polishing, and visual detection effect is affected. At this time, a filter lens with a polarizer is generally sleeved on the shooting component, and the polarizer can effectively reduce the influence of reflected light on the imaging effect of the shooting component.

However, the different sizes of the shooting components are different, and the same filter lens is difficult to adapt to the shooting components with various sizes, so that when visual detection is performed, more filter lenses with various sizes are often required to be prepared, the cost is high, the utilization rate is low, and a serious resource waste phenomenon exists.

Therefore, it is necessary to develop a polarized light source device for solving the problem that the existing filter lens cannot be adapted to photographing components with various sizes and specifications.

The above information disclosed in this background section is only included to enhance understanding of the background of the disclosure and therefore may contain information that does not form the prior art that is presently known to those of ordinary skill in the art.

Disclosure of Invention

An object of the present utility model is to provide a polarized light source device and a visual inspection apparatus capable of adapting to photographing modules of various sizes.

In order to achieve the above object, in one aspect, the present utility model provides a polarized light source device, including an annular light source, an annular rotating ring rotatably connected to a top of the annular light source, and a circular polarizer mounted on the annular rotating ring;

the middle positions of the annular light source and the annular rotating ring are respectively provided with a hollow space for light to pass through. Optionally, a rotating groove for inserting the top of the annular light source is formed in the bottom of the annular rotating ring.

Optionally, an annular groove is arranged in the circumferential direction of the part of the annular light source inserted into the rotary groove;

and a limiting part is arranged on the annular rotating ring at a position corresponding to the annular groove, one end of the limiting part is exposed outside the annular rotating ring, and the other end of the limiting part extends into the annular groove so as to limit the annular rotating ring to be separated from the annular light source along the axial direction.

Optionally, the limiting piece is in threaded connection with the annular light source.

Optionally, the limiting part is a machine screw or a wave bead screw.

Optionally, the annular light source includes a lamp panel support provided with the annular groove, a peripheral ring surrounding the lamp panel support and surrounding the lamp panel support to form an annular space, and an annular lamp panel installed in the annular space.

Optionally, an annular linear polarizer is arranged below the annular lamp panel.

Optionally, the circular polaroid is tightly connected with the annular rotary ring, the lamp panel bracket is tightly connected with the peripheral ring, and the peripheral ring is tightly connected with the annular linear polaroid through fasteners.

On the other hand, a visual inspection device is provided, which comprises a shooting component and any polarized light source device, wherein the shooting component performs visual inspection on a workpiece through a circular polaroid and a hollow space of the polarized light source device.

The utility model has the beneficial effects that: the utility model provides a polarized light source device and visual detection equipment, wherein a circular polarizer is arranged on an annular light source, and a shooting component obtains image information of a workpiece through the circular polarizer, but the circular polarizer is not directly connected with the shooting component, so that even if the shooting components with different specifications are replaced, the circular polarizer does not need to be replaced, and the filtering effect can be still achieved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a visual inspection apparatus according to an embodiment;

FIG. 2 is a schematic top view of a polarized light source device according to an embodiment;

fig. 3 is a schematic half-sectional view of a polarized light source device according to an embodiment.

In the figure:

100. a shooting assembly; 200. a polarized light source device; 300. a workpiece;

1. an annular light source; 101. a lamp panel bracket; 1011. an annular groove; 102. a peripheral ring; 103. an annular lamp panel; 104. an annular space; 105. an annular linear polarizer;

2. an annular rotating ring; 201. a rotary groove;

3. a circular polarizer;

4. a hollow space;

5. and a limiting piece.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the embodiments described below are only some embodiments of the present utility model, not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it will be understood that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

Furthermore, the terms "long," "short," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, for convenience of description of the present utility model, and are not intended to indicate or imply that the apparatus or elements referred to must have this particular orientation, operate in a particular orientation configuration, and thus should not be construed as limiting the utility model.

The present utility model will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the utility model and structural, methodological, or functional modifications of these embodiments that may be made by one of ordinary skill in the art are included within the scope of the utility model.

The utility model provides a polarized light source device and a visual inspection device with the polarized light source device. It should be noted that the visual inspection apparatus of the present utility model may be used for performing application scenarios such as surface defect inspection, which is not limited in this disclosure.

Referring to fig. 1, the visual inspection apparatus includes a photographing assembly 100 and a polarized light source device 200. Referring to fig. 2 and 3, the polarized light source device 200 includes an annular light source 1, an annular rotating ring 2 rotatably connected to the top of the annular light source 1, and a circular polarizer 3 mounted on the annular rotating ring 2. The middle positions of the annular light source 1 and the annular rotary ring 2 are respectively provided with a hollow space 4 for light to pass through, and the shooting assembly 100 performs visual detection on the workpiece 300 through the circular polaroid 3 and the hollow space 4.

When visual inspection is needed, the shooting assembly 100 is erected on one side of the polarized light source device 200, which is far away from the workpiece 300, and the shooting assembly 100 can acquire image information of the workpiece 300 through the circular polarizer 3 and the hollow space 4, and then the annular light source 1 is turned on to polish the workpiece 300; then, the annular rotating ring 2 is rotated to adjust the polarizing angle of the circular polarizer 3, and when the polarizing effect reaches the requirement, the photographing assembly 100 can be used to visually inspect the workpiece 300.

In the polarized light source device 200 provided in this embodiment, the circular polarizer 3 is disposed on the annular light source 1, and the photographing assembly 100 obtains the image information of the workpiece 300 through the circular polarizer 3, but the circular polarizer 3 is not directly connected with the photographing assembly 100, so that even if the photographing assemblies 100 with different specifications and models are replaced, the circular polarizer 3 is not required to be replaced, and the filtering effect can be achieved.

In this embodiment, the annular light source 1 includes a lamp panel holder 101, a peripheral ring 102 surrounding the lamp panel holder 101 and surrounding an annular space 104 with the lamp panel holder 101, an annular lamp panel 103 installed in the annular space 104, and an annular linear polarizer 105 located below the annular lamp panel 103.

Optionally, the circular polarizer 3 is fastened to the annular rotary ring 2, the lamp panel bracket 101 is fastened to the peripheral ring 102, and the peripheral ring 102 is fastened to the annular linear polarizer 105 by fasteners such as bolts.

In this embodiment, a rotating groove 201 is provided at the bottom of the annular rotating ring 2 to allow the top of the lamp panel holder 101 to be inserted. An annular groove 1011 is arranged in the circumferential direction of the part of the lamp panel bracket 101 inserted into the rotary groove 201; and a limiting piece 5 is arranged on the annular rotary ring 2 at a position corresponding to the annular groove 1011, one end of the limiting piece 5 is exposed outside the annular rotary ring 2, and the other end of the limiting piece extends into the annular groove 1011 so as to limit the annular rotary ring 2 to be separated from the annular light source 1 along the axial direction.

It can be understood that when a different circular polarizer 3 needs to be replaced, the fastener between the circular polarizer 3 and the annular rotating ring 2 can be directly loosened; when the annular rotating ring 2 needs to be replaced, the limiting piece 5 needs to be screwed forward, so that the limiting piece 5 exits the annular groove 1011, and then the annular rotating ring 2 can be taken out upwards; after the new annular rotating ring 2 is installed, the limiting piece 5 is reversely screwed, so that the limiting piece 5 stretches into the annular groove 1011, and the annular rotating ring 2 can be limited to be separated from the lamp panel bracket 101 upwards, and at the moment, the annular rotating ring 2 can be freely rotated to adjust the polarization angle of the circular polarizer 3.

Further, the limiting piece 5 is in threaded connection with the annular light source 1. The limiting piece 5 is a machine meter screw or a wave bead screw. The limiting piece 5 is reversely screwed, so that the limiting piece 5 is tightly propped against the lamp panel bracket 101, and the positioning of the annular rotary ring 2 can be completed.

It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. A polarized light source device, which is characterized by comprising an annular light source (1), an annular rotating ring (2) rotatably connected with the top of the annular light source (1), and a circular polarizer (3) arranged on the annular rotating ring (2);

the middle positions of the annular light source (1) and the annular rotating ring (2) are respectively provided with a hollow space (4) for light to pass through.

2. A polarized light source device as claimed in claim 1, characterized in that the bottom of the annular rotating ring (2) is provided with a rotating groove (201) into which the top of the annular light source (1) is inserted.

3. The polarized light source device according to claim 2, wherein the portion of the annular light source (1) inserted into the rotary groove (201) is provided with an annular groove (1011) in the circumferential direction;

and a limiting piece (5) is arranged on the annular rotating ring (2) at a position corresponding to the annular groove (1011), one end of the limiting piece (5) is exposed outside the annular rotating ring (2), and the other end of the limiting piece extends into the annular groove (1011) so as to limit the annular rotating ring (2) to be separated from the annular light source (1) along the axial direction.

4. A polarized light source device as claimed in claim 3, characterized in that the stop member (5) is screwed with the annular light source (1).

5. A polarized light source device as claimed in claim 3, characterized in that the limiting element (5) is a machine screw or a wave bead screw.

6. A polarized light source device as claimed in claim 3, characterized in that the annular light source (1) comprises a lamp panel holder (101) provided with the annular groove (1011), a peripheral ring (102) surrounding the lamp panel holder (101) and surrounding an annular space (104) with the lamp panel holder (101), and an annular lamp panel (103) mounted in the annular space (104).

7. The polarized light source device according to claim 6, wherein an annular linear polarizer (105) is provided below the annular lamp panel (103).

8. The polarized light source device according to claim 7, wherein the circular polarizer (3) and the annular rotary ring (2), the lamp panel holder (101) and the peripheral ring (102), and the peripheral ring (102) and the annular linear polarizer (105) are fastened by fasteners.

9. A visual inspection apparatus comprising a photographing assembly (100) and the polarized light source device (200) according to any one of claims 1 to 8, wherein the photographing assembly (100) performs visual inspection of a workpiece (300) through a circular polarizer (3) and a hollow space (4) of the polarized light source device.