CN212321460U - Auxiliary lighting device for panel detection and detection device - Google Patents

Abstract

The utility model discloses a bent screen detects with auxiliary lighting device, detection device, automatic check out test set, it includes the dome light source, be provided with the main entrance that is used for detecting the panel on the dome light source and be used for the auxiliary detection panel auxiliary hole. The utility model discloses can realize the plane portion and the curved surface portion even illumination simultaneously of bent screen to the defect that the non-screen body of filtering exists itself effectively.

Description

Auxiliary lighting device for panel detection and detection device

Technical Field

The utility model belongs to the technical field of check out test set, concretely relates to panel detects uses auxiliary lighting device, detection device, automatic check out test set.

Background

In the development of current panel trade, there can the mar on the panel usually, dirty, defect such as foreign matter need polish with the light source, will dirty, the mar detects out with defect such as foreign matter, detects to non-3D curved surface screen and uses line light source or bar light source and annular light source usually at present. However, the above-mentioned device cannot be directly used for curved screen illumination, because there is a curved surface portion in the curved surface screen, and the divergence angle of the annular light source and the bar-shaped light source is small, so that the annular light source and the bar-shaped light source cannot uniformly illuminate the curved surface portion of the curved surface screen and the planar portion of the curved surface screen at the same time, and therefore, it is urgently needed to develop an illumination device capable of uniformly illuminating the curved surface of the curved surface screen.

Disclosure of Invention

An object of the utility model is to provide a panel detects uses auxiliary lighting device, it can realize that the panel detects even illumination to detect the screen defect effectively.

In order to solve the technical problem, the utility model discloses a such panel detects uses auxiliary lighting device, it includes the dome light source, be provided with the main hole that is used for detecting the panel on the dome light source and be used for the auxiliary detection panel auxiliary hole.

In a preferred embodiment of the present invention, the central axis of the dome light source is collinear with the central axis of the main hole.

In a preferred embodiment of the present invention, an angle between the central axis of the dome light source and the central axis of the secondary hole is β, 0 ° < β <90 °.

In a preferred embodiment of the present invention, the secondary hole includes a plurality of secondary holes, and the plurality of secondary holes are symmetrically arranged with respect to a central axis of the dome light source.

In a preferred embodiment of the present invention, the dome light source is hemispherical.

The utility model also discloses a bent screen detection device, it is including the camera that is used for the curved carrier of screen of location, is used for the curved lighting device of screen of illumination and is used for shooting curved screen, lighting device is aforementioned panel detects with auxiliary lighting device.

In a preferred embodiment of the present invention, the main hole and the auxiliary hole are provided with a camera.

In a preferred embodiment of the present invention, the main hole is provided with a camera, and the auxiliary hole is provided with a point light source or a point light source and a camera.

In a preferred embodiment of the present invention, the main hole is provided with a point light source, and the auxiliary hole is provided with a camera.

In a preferred embodiment of the present invention, the carrier is provided with reflecting prisms on both sides.

The utility model has the advantages that: the utility model has simple structure and convenient use, and effectively realizes the simultaneous and uniform illumination of the plane part and the curved surface part of the whole curved screen and the good detection of the screen defects by using the dome light source and arranging a plurality of through holes on the dome light source; the main hole and the auxiliary hole of the utility model are used for detecting the plane part and the curved surface part of the curved screen, the labor division is clear, and the detection efficiency is high; furthermore, the position of the auxiliary hole is designed to be suitable for detecting curved screens of various sizes and models; further, the utility model discloses a thereby the combination is placed camera or pointolite and can be realized the fixed point to the various specific angle defects of bent screen and detect on main entrance, auxiliary opening, has improved the stability that bent screen detected effectively.

Drawings

FIG. 1 is a schematic diagram of a prior art curved screen lighting device; (Bar light source)

FIG. 2 is a schematic diagram of a prior art curved screen lighting device; (Ring light source)

Fig. 3 is a schematic view of a curved screen detection device according to an embodiment of the present invention;

in the figure: 1-dome light source, 2-main hole, 3-auxiliary hole, 4-curved screen, 5-bar light source, 6-annular light source and 7-camera.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1, currently, the left and right sides are polished by using a bar-shaped light source 5, although the divergence angle of the light source is large, only a part on the plane of the curved screen 5 or a curved part can be polished, and the whole screen cannot be completely photographed; as shown in fig. 1, when the ring-shaped light source 6 is used for polishing, only the horizontal portion of the curved screen 4 can be illuminated, but the curved portion cannot be illuminated, so that defects such as scratches, dirt, and foreign matter on the curved portion cannot be detected by polishing.

The utility model discloses carry out the design of trompil based on the dome light source, evenly throw light on whole curved screen. This is because the dome light source has a large light emission angle, and the light emission angle of the dome light source is 180 °, so that the curved surface portion and the flat surface portion of the curved screen can be illuminated at the same time. The small camera is placed at the position of the light source hole for shooting, so that scratches, dirt, foreign matters and other defects of the curved screen part are detected, and the angle of the curved screen is different. Meanwhile, the camera can be placed at different positions aiming at different screens, so that a plurality of auxiliary holes are required to be arranged.

For the dome light source opening, the small camera can be placed, the point light source can be placed, the area of the point light source is small, the parallelism is good, and the lighting effect of a light-reflecting object is particularly obvious. The defects on the screen can not be detected due to the fact that a common line light source is used for lighting, the reflection phenomenon can not occur when the coaxial point light source is used for lighting, and the defects on the screen can be clearly detected.

The manufacture of the dome light source can be realized by adopting a micro LED, a miniLED and an OLED.

The utility model discloses a panel detects uses auxiliary lighting device, including dome light source 1, be provided with on the dome light source 1 and be used for shooting the main hole 2 of the curved plane portion of song screen and be used for shooting the curved facial vice hole 3 of song screen. The central axis of the dome light source 1 is collinear with the central axis of the main hole 2. The angle between the central axis of the dome light source 1 and the central axis of the secondary aperture 3 is β, 0 ° < β <90 °. The secondary hole 3 includes a plurality of secondary holes 3, and the plurality of secondary holes 3 are arranged symmetrically with respect to the central axis of the dome light source 1. The dome light source 1 is hemispherical.

Further, the utility model also discloses a bent screen detection device, including the carrier that is used for the bent screen of location, be used for the crooked lighting device of screen of illumination and be used for shooting the camera 7 of bent screen, the lighting device panel detects with auxiliary lighting device. The camera 7 or the point light source can be arranged at the main hole 2 and the auxiliary hole 3 according to the actual requirement:

such as the main bore 2 and the secondary bore 3, are provided with cameras 7.

Or the main hole 2 is provided with the camera 7, and the auxiliary hole 3 is provided with the point light source or the point light source and the camera 7.

Or a point light source is arranged on the main hole 2, and a camera 7 is arranged on the auxiliary hole 3.

The specific operation steps are as follows:

1. as shown in fig. 3, an open-pored dome-shaped light source is placed above the curved screen;

2. as shown in fig. 3, the working distance is calculated as described above. The working distance WD of the camera is determined as f (1+ L/L). f is the focal length of the selected lens, and L is the length (width) of the screen in the horizontal direction; l is the length (width) of the camera chip; the actual working distance is adjusted on the basis to ensure that the camera can shoot the whole visual field;

3. determining the placement position of the small camera according to the angle of the screen, if the angle of the curved screen is 90 degrees, placing the small camera at a position with an included angle of 45 degrees with the horizontal plane, and if the angle of the curved part of the curved screen is smaller, increasing the angle of the camera;

4. adjusting a focusing ring of the lens to focus;

5. lighting a dome-shaped light source, and taking a picture;

and respectively observing the pictures shot by the three small cameras, and detecting dirt, scratches and foreign matters in the pictures.

The utility model also discloses a bent screen automated inspection equipment, its bent screen detection device.

The utility model discloses an have following advantage:

1. the light source is single, does not need to use the light source of a plurality of angles simultaneously to beat light, also need not to rotate the light source and carry out the illumination.

2. The compatibility is better, can set up a plurality of trompils on the light source, so be convenient for place a plurality of cameras or multiple spot light source to this can be applicable to the curved screen of each angle. The method is also suitable for non-curved screen detection and used for detecting defects of specific angles.

3. The camera is placed at the position of the opening of the light source, so that the problem that the existing front-view camera cannot detect the plane part and the curved part of the screen body at the same time can be well solved.

4. Simple structure does not have the interference problem in the mechanism, and it is comparatively simple and convenient to realize.

5. Compared with a strip light source or an annular light source, the uniformity of the light source is better, and the detection rate of defects is favorably improved.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims (10)

1. The utility model provides a panel detects uses auxiliary lighting device which characterized in that: the device comprises a dome light source (1), wherein a main hole (2) for detecting a panel and a secondary hole (3) for assisting in detecting the panel are arranged on the dome light source (1).

2. The auxiliary lighting device for panel inspection according to claim 1, wherein: the central axis of the dome light source (1) is collinear with the central axis of the main hole (2).

3. The auxiliary lighting device for panel inspection according to claim 1, wherein: the angle between the central axis of the dome light source (1) and the central axis of the secondary hole (3) is beta, and 0 degrees < beta <90 degrees.

4. The auxiliary lighting device for panel inspection according to claim 3, wherein: the secondary holes (3) comprise a plurality of secondary holes (3), and the plurality of secondary holes (3) are symmetrically arranged relative to the central axis of the dome light source (1).

5. The auxiliary lighting device for panel inspection according to claim 1, wherein: the dome light source (1) is hemispherical.

6. A detection device comprising a carrier for positioning a panel, an illumination device and a camera (7), characterized in that: the lighting device is the auxiliary lighting device for panel detection according to any one of claims 1 to 5.

7. The detection device according to claim 6, wherein: the main hole (2) and the auxiliary hole (3) are both provided with cameras (7);

or the main hole (2) is provided with a camera (7), and the auxiliary hole (3) is provided with a point light source or a point light source and a camera (7).

8. The detection device according to claim 6, wherein: the panel is a hyperboloid structure.

9. The detection device according to claim 6, wherein: the main hole (2) is provided with a point light source, and the auxiliary hole (3) is provided with a camera (7).

10. The detection device according to claim 6, wherein: and reflecting prisms are arranged on two sides of the carrier.

Images