CN213715060U

CN213715060U - Optical element visual detection tool

Info

Publication number: CN213715060U
Application number: CN202022823072.XU
Authority: CN
Inventors: 万英伟; 沈浩; 尹建群; 张东东; 宋培华
Original assignee: Lei Ao Vision Technology Dongguan Co ltd
Current assignee: Lei Ao Vision Technology Dongguan Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-07-16
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses an optical element visual detection tool, including unable adjustment base and be used for the fixed establishment who waits to detect optical element, unable adjustment base is last to be equipped with and to be used for supporting the supporting shoe that waits to detect the optical element edge, supporting shoe protrusion unable adjustment base surface. The utility model discloses can make optical element remain certain clearance throughout with the tool surface in the visual detection process to avoid the erroneous judgement because of tool surface dust causes, improve the accuracy of testing result.

Description

Optical element visual detection tool

Technical Field

The utility model relates to a visual detection equipment technical field, concretely relates to optical element visual detection tool.

Background

For important optical elements such as a light guide plate of a mobile phone and the like, the requirements on the appearance size and the surface shape are very strict in the production and assembly processes, quality inspection by adopting visual inspection equipment is an ideal detection means at present, the elements generally need to be fixed on a special jig, and a photographing device photographs and uploads the images to a host computer for analysis.

In the operation process of the detection equipment, especially under the on-line detection working condition, the absolute cleanness of the field environment is difficult to guarantee usually, and because the component is attached to the surface of the jig, the system easily mistakenly considers the dust on the surface of the jig as the defect of the component, thereby influencing the accuracy of the detection result.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an optical element visual detection tool can avoid or reduce the system misjudgement that tool surface dust arouses, improves and detects the accuracy.

In order to achieve the above purpose, the utility model discloses technical scheme as follows:

the utility model provides an optical element visual detection tool, includes unable adjustment base and is used for the fixed establishment who waits to detect optical element, its key lies in: the fixed base is provided with a supporting block for supporting the edge of the optical element to be detected, and the supporting block protrudes out of the surface of the fixed base.

By adopting the scheme, the optical element to be detected is supported above the surface of the fixed base through the supporting block, so that the optical element and the surface of the fixture fixed base keep a proper gap, when the optical element is subjected to visual detection, dust on the surface of the fixed base is not easy to beat, and even if the dust is beat, the dust can be identified by a system due to the existence of the gap, thereby avoiding misjudgment on the detection result.

Furthermore, a light source is installed at one end of the fixed base, and a light guide plate diffusion plate is arranged for guiding light of the light source to uniformly emit to the detection area on the inner side of the fixed base. The structure is helpful for guiding the light source to be incident to the optical element to be detected along the end part in an even surface light source mode, so that the detection result is prevented from being influenced by light and dark alternating light.

Furthermore, the light source is a light bar or a light belt, the fixed base is provided with a step bump, one side of the light source is abutted against the step bump, the light guide plate diffusion plate is fixed on the upper surface of the step bump through the pressing plate, and at least part of the light source protrudes out of the upper surface of the step bump and is opposite to the light guide plate diffusion plate. The structure can simply and reliably realize the installation and fixation of the light source and the light guide plate diffusion plate.

In order to improve the heat dissipation effect, heat dissipation fins are distributed on the backlight side of the light source.

Preferably, the fixing mechanism is arranged at one end of the fixing base far away from the light source and comprises a positioning push plate and a positioning cylinder driving the positioning push plate to move, and the positioning cylinder is arranged at the end part of the fixing base through a fixing plate. Thus, the optical element to be detected can be positioned by using the positioning push plate and the supporting block.

In order to support the optical element to be detected conveniently, the two groups of supporting blocks are arranged, two supporting blocks are arranged in each group, the two supporting blocks are symmetrically arranged on two sides of the fixed base, and the upper edge of one side, opposite to each other, of each group of supporting blocks is provided with a positioning step.

The fixed base is provided with a sliding groove at the position corresponding to each group of supporting blocks, and each supporting block can be embedded in the corresponding sliding groove in a sliding way. Based on such design, the supporting shoe can set up on unable adjustment base adjustably, and the supporting shoe slides along the spout, can adjust the width between every group supporting shoe to adapt to different width model optical element's the detection needs.

Compared with the prior art, the beneficial effects of the utility model are that:

adopt the utility model provides an optical element visual detection tool can make optical element remain certain clearance throughout with the tool surface in the visual detection process to avoid the erroneous judgement because of tool surface dust causes, improve the accuracy of testing result.

Drawings

Fig. 1 is a schematic diagram of an exemplary structure of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is a cross-sectional view of the jig of FIG. 1 showing the position of one set of support blocks;

fig. 5 is a reference diagram of the usage status of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings.

The optical element visual detection jig shown in fig. 1 comprises a fixing base 1 which is approximately in a rectangular plate-shaped structure, wherein one end of the fixing base 1 is provided with a fixing mechanism 2 used for fixing an optical element to be detected, the other end of the fixing base is provided with a light source module C, 4 supporting blocks 3 are symmetrically arranged in the middle of the fixing base 1 in pairs, and the supporting blocks 3 protrude out of the surface of the fixing base 1.

Referring to fig. 2, the light source module C includes a step protrusion 1a fixed to or integrated with the fixing base 1, the step protrusion 1a extends along the width direction of the fixing base 1, a light source 4 is installed on a side of the step protrusion 1a away from the fixing mechanism 2, and the light source 4 may be a light emitting component such as a light bar or a light strip, which is arranged along the step protrusion 1a and attached to a side surface of the step protrusion 1 a.

The step bump 1a is made of a non-light-transmitting material, and at least a part of a light-emitting region of the light source 4 protrudes above the upper surface of the step bump 1 a. The upper surface of the step bump 1a is provided with a light guide plate diffusion plate 5 with a sheet structure, and the light guide plate diffusion plate 5 is laid on the upper surface of the step bump 1a in a posture that the light guide plate diffusion plate is approximately parallel to the surface of the fixed base 1 and is used for guiding the light of the light source 4 to be uniformly projected to a detection area in the middle of the fixed base 1 in a surface light source mode.

The pressing plate 6 is arranged above the light guide plate diffusion plate 5 and used for fixing the light guide plate diffusion plate 5, a plurality of radiating fins 7 are distributed on one side of the back face of the light source 4, away from the light guide plate diffusion plate 5, in an array mode, the radiating fins 7 are perpendicular to the fixing base 1 and extend horizontally along the length direction of the fixing base 1, the pressing plate 6 is attached to the upper surface of the near end of each radiating fin 7, fixing of the radiating fins 7 is facilitated, and the structure is compact.

The middle part of the fixed base 1 is provided with two sliding grooves 1b along the width direction, two supporting blocks 3 are embedded into the corresponding sliding grooves 1b in a group, and the distance between the two supporting blocks 3 in the width direction of the fixed base 1 can be adjusted by sliding along the sliding grooves 1b so as to meet the detection requirements of optical elements of different models.

As can be seen from fig. 3 and 4, the supporting blocks 3 are substantially rectangular block-shaped, and the mutually facing sides of each group of supporting blocks 3 are provided with positioning steps 31 along the sides thereof so as to support the lateral edges of the optical element to be detected.

The bottom of the supporting block 3 is provided with a sliding part 32 embedded in the chute 1b, and the back is provided with a screw avoiding notch 33 so as to lock the supporting block 3 by a screw.

Fixing mechanism 2 includes location push pedal 21, the location cylinder 22 of drive location push pedal 21 motion and is used for installing fixed plate 23 of location cylinder 22, and fixed plate 23 is connected in the one end that light source module C was kept away from to unable adjustment base 1, and under the cylinder 22 effect of location, location push pedal 21 can be along unable adjustment base 1 length direction reciprocating motion, realizes treating the location of detecting optical element.

As shown in fig. 5, during detection, the optical element 8 is placed above the fixing base 1, and the two side edges of the optical element are supported by the 4 supporting blocks 3, so that a certain gap is kept between the optical element 8 and the upper surface of the fixing base 1, the fixing mechanism 2 is operated to realize positioning, the light source 4 emits light, and the system shoots and judges the appearance and the surface shape of the product. Because the optical element 8 is not attached to the fixed base 1, the dust on the surface of the fixed base 1 is not easy to be mistaken for the defect of the optical element 8 by the system, and therefore the accuracy of the detection result is effectively improved.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims

1. The utility model provides an optical element visual detection tool, includes unable adjustment base (1) and is used for fixed optical element's of waiting to detect fixed establishment (2), its characterized in that: the fixed base (1) is provided with a supporting block (3) for supporting the edge of the optical element to be detected, and the supporting block (3) protrudes out of the surface of the fixed base (1).

2. The optical element vision inspection jig of claim 1, wherein: and a light source (4) is installed at one end of the fixed base (1), and a light guide plate diffusion plate (5) for guiding light rays of the light source (4) to uniformly emit to a detection area on the inner side of the fixed base (1) is arranged.

3. The optical element vision inspection jig of claim 2, wherein: the light source (4) is a light bar or a light belt, the fixed base (1) is provided with a step bump (1a), one side of the light source (4) is abutted against the step bump (1a), the light guide plate diffusion plate (5) is fixed on the upper surface of the step bump (1a) through the pressing plate (6), and at least part of the light source (4) protrudes out of the upper surface of the step bump (1a) and is right opposite to the light guide plate diffusion plate (5).

4. The optical element vision inspection jig of claim 3, wherein: and radiating fins (7) are distributed on the backlight side of the light source (4).

5. The optical element vision inspection jig of claim 3, wherein: the fixing mechanism (2) is arranged at one end, far away from the light source (4), of the fixing base (1) and comprises a positioning push plate (21) and a positioning cylinder (22) for driving the positioning push plate (21) to move, and the positioning cylinder (22) is installed at the end part of the fixing base (1) through a fixing plate (23).

6. The optical element visual inspection jig of any one of claims 1 to 5, wherein: the supporting blocks (3) are two groups, each group is two, the supporting blocks are symmetrically arranged on two sides of the fixed base (1), and the upper edge of one side, opposite to each other, of each group of supporting blocks (3) is provided with a positioning step (31).

7. The optical element vision inspection jig of claim 6, wherein: the fixed base (1) is provided with a sliding groove (1b) at the position corresponding to each group of supporting blocks (3), and each supporting block (3) can be embedded in the corresponding sliding groove (1b) in a sliding way.