Optical detection device for efficiently detecting LGP

Abstract

The utility model relates to the technical field of optical detection devices, in particular to an optical detection device for efficiently detecting LGP, which comprises a light-emitting chassis, a backlight source lamp is arranged in the light-emitting chassis, and a wiring port for electrifying the backlight source lamp is arranged on one side of the light-emitting chassis. Supporting columns are symmetrically arranged on the back of the light-emitting base plate along the two sides, the lower ends of the supporting columns are fixedly assembled with the light-emitting base plate through fastening bolts, supporting plates are fixedly installed at the upper ends of the two supporting columns distributed along the two sides, and a power source is fixedly installed on the back of the supporting column located on one side. According to the scheme, uniform light irradiation is provided through the light-emitting chassis and the backlight source lamp, and the polarizing film interlayer in the detection lens is combined, so that the stress distribution condition of the LGP can be clearly presented, an area with strong stress is displayed in a darker color, an area with weak stress is displayed in a lighter color, and by utilizing obvious chromatic aberration contrast, the detection accuracy of the LGP is improved. And an operator can intuitively and quickly judge whether the stress magnitude and direction of the LGP are correct or not.

Description

Technical Field

[0001] This utility model relates to the field of optical inspection device technology, and in particular to an optical inspection device for high-efficiency detection of LGP. Background Technology

[0002] With changing times and innovation, people are pursuing full-screen, large-size, and foldable mobile phone screens. The newly launched 5G market is also driving mobile phone products towards higher-end models, leading to increasingly sophisticated product control.

[0003] With the development of the light guide plate market, the requirements for light guide plates are getting higher and higher. Simple measuring tools can no longer meet the high quality requirements of existing light guide plates. In order to achieve high quality requirements, the measuring tools must be updated and improved to meet these requirements.

[0004] Current measuring tools have the following problems:

[0005] 1. The illumination of this testing tool is adjustable;

[0006] 2. LGP optical inspection tools can effectively detect shrinkage, stress, and front / back orientation of light guide plates;

[0007] 3. Improved detection efficiency. Utility Model Content

[0008] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a high-efficiency optical detection device for detecting LGP.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: an optical detection device for high-efficiency detection of LGP, comprising a light-emitting chassis, wherein a backlight source lamp is disposed inside the light-emitting chassis, and a wiring port for powering the backlight source lamp is disposed on one side of the light-emitting chassis;

[0010] The back of the light-emitting chassis is symmetrically provided with support columns on both sides. The lower end of the support columns is fixedly assembled to the light-emitting chassis by fastening bolts. The upper end of the two support columns distributed on both sides is fixedly installed with support plates. A power supply is fixedly installed on the back of the support column on one side. The power supply is connected to the wiring port through a wire.

[0011] The support plate is fixed to a support frame on one side above the light-emitting chassis. An inner boss is provided on the inner side of the support frame. The inner boss is a rectangular ring structure. A detection lens is slidably inserted into the inner side of the support frame. The lower edge of the detection lens is mounted on the upper surface of the inner boss.

[0012] Preferably, the upper part of the luminous chassis is covered with a frame, which surrounds the backlight source lamp.

[0013] Preferably, a transparent plastic plate is embedded and fixed on the inner side of the frame, and the transparent plastic plate covers the backlight source lamp.

[0014] Preferably, elastic clips are fixedly installed at the lower ends of both sides of the frame, and a slot is opened on the surface of the light-emitting base, with the surface of the elastic clip engaging with the inner side of the slot.

[0015] Preferably, the detection lens comprises a first surface layer, an interlayer, and a second surface layer in sequence, with the interlayer fixed between the first surface layer and the second surface layer.

[0016] Preferably, both the first and second surface layers are made of transparent glass material.

[0017] Preferably, the interlayer is made of a polarizing film material.

[0018] The design scheme proposed in this utility model has the following beneficial effects in application:

[0019] 1. This solution provides uniform illumination through a light-emitting chassis and a backlight source. Combined with the polarizing film interlayer in the detection lens, it can clearly present the stress distribution of the LGP. Areas with strong stress are displayed in darker colors, while areas with weak stress are displayed in lighter colors. With obvious color difference contrast, operators can intuitively and quickly determine whether the stress magnitude and direction of the LGP are correct.

[0020] 2. As described in 1, a multi-layer structure is adopted. The first and second surface layers are made of transparent glass material, and the interlayer is a polarizing film material. This structure not only protects the polarizing film interlayer, but also ensures the stability and durability of the detection lens. The polarization characteristics of the polarizing film paper can accurately reflect the stress distribution of the LGP, making the detection results more accurate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall rear structure of this utility model;

[0023] Figure 3 This is a schematic cross-sectional view of the overall structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the detection lens composition of this utility model.

[0025] In the diagram: 1. Illuminated chassis; 11. Backlight source lamp; 12. Wiring port; 13. Support column; 14. Support plate; 15. Power supply; 16. Support frame; 17. Inner boss; 18. Detection lens; 19. Fastening bolt; 2. Frame; 21. Transparent plastic plate; 22. Elastic clip; 23. Slot; 1801. Surface layer one; 1802. Interlayer; 1803. Surface layer two. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1

[0028] Reference Figures 1-4 An optical inspection device for high-efficiency detection of LGP includes a light-emitting chassis 1, a backlight source lamp 11 is provided inside the light-emitting chassis 1, and a wiring port 12 for powering the backlight source lamp 11 is provided on one side of the light-emitting chassis 1.

[0029] The back of the light-emitting chassis 1 is symmetrically provided with support columns 13 on both sides. The lower end of the support column 13 is fixedly assembled to the light-emitting chassis 1 by fastening bolts 19. The upper end of the two support columns 13 distributed on both sides is fixedly installed with support plates 14. A power supply 15 is fixedly installed on the back of one side of the support column 13. The power supply 15 is connected to the wiring port 12 through wires.

[0030] A support frame 16 is fixed on one side above the light-emitting chassis 1. An inner boss 17 is provided on the inner side of the support frame 16. The inner boss 17 is a rectangular ring structure. A detection lens 18 is slidably inserted into the inner side of the support frame 16. The lower edge of the detection lens 18 is mounted on the upper surface of the inner boss 17.

[0031] The light-emitting base 1 is covered with a frame 2, which surrounds the backlight source lamp 11 and covers the edge of the backlight source lamp 11 to avoid blocking the light source.

[0032] A transparent plastic plate 21 is embedded and fixed on the inner side of the frame 2. The transparent plastic plate 21 covers the backlight lamp 11. The transparent plastic plate 21 can protect the backlight lamp 11 from dirt without blocking the light, and prevent dirt from adhering to the surface of the backlight lamp 11 after long-term use.

[0033] Among them, elastic clips 22 are fixedly installed on both lower ends of the frame 2, and the surface of the light-emitting base 1 is provided with a slot 23. The surface of the elastic clip 22 is engaged with the inner side of the slot 23. The shape of the elastic clip 22 and the inner shape of the slot 23 are both regular hexagons, and the elastic clip 22 is made of rubber material. Through the cooperation of the elastic clip 22 and the slot 23, the frame 2 and the transparent plastic plate 21 can be installed according to actual needs.

[0034] The detection lens 18 includes a first surface layer 1801, an interlayer 1802, and a second surface layer 1803, with the interlayer 1802 fixed between the first surface layer 1801 and the second surface layer 1803.

[0035] Among them, surface layer 1801 and surface layer 1803 are both made of transparent glass material. The two surface layers distributed on the top and bottom can protect and stably position the interlayer 1802.

[0036] The interlayer 1802 is made of polarizing film material. The interlayer 1802 is polarizing film paper. Due to its polarization characteristics, areas with high stress will appear as darker colors on the detection lens 18.

[0037] The innovation of this invention lies in the following: During testing, the light source is turned on, and the LGP is placed between the light-emitting base 1 and the detection lens 18. The light from the light source shines on the LGP from different angles. In areas of high stress, the molecules are more concentrated and the light transmittance is poor, while in areas of low stress, the light transmittance is strong. When the light passes through the LGP, the strong and weak light are absorbed by the interlayer 1802 made of polarizing film. Then, by utilizing the polarization characteristics of the polarizing film paper, areas of high stress will appear as a darker color on the detection lens 18, while areas of low stress will appear as a lighter color. The difference between light and dark colors is then used to determine the magnitude and direction of the stress on the LGP. The principle is similar for detecting shrinkage products.

[0038] In practice

[0039] The detection lens 18 of this scheme consists of a first surface layer 1801, a middle layer 1802, and a second surface layer 1803. The middle layer 1802 is made of polarizing film material. When the backlight source lamp 11 is powered on, the light shines evenly onto the LGP to be tested through the transparent plastic plate 21 above the light-emitting base 1. If there is uneven stress inside the LGP, its molecular arrangement density will vary depending on the strength of the stress: the molecular aggregation in the high stress area results in poor light transmission, while the low stress area has strong light transmission. The light that penetrates the LGP then enters the detection lens 18. The polarizing film of the middle layer 1802 will selectively absorb the light according to the polarization characteristics. The light corresponding to the high stress area has low transmittance and appears as dark patches on the polarizing film; the low stress area appears as light. By observing the distribution of light and dark color difference formed on the surface of the detection lens 18, the magnitude and direction of the stress of the LGP and whether it is placed incorrectly can be intuitively judged.

[0040] The backlight source lamp 11 of the light-emitting chassis 1 is covered by a frame 2, and a transparent plastic plate 21 is embedded in the inner side of the frame 2. The two are fixed by the elastic clip 22 and the hexagonal rubber clip of the slot 23. This design realizes the modular protection of the light source: the transparent plastic plate 21 prevents light from being blocked and prevents dust or dirt from being directly attached to the surface of the backlight source lamp 11, ensuring the stability of light intensity under long-term use. The rubber material of the elastic clip 22 provides cushioning force, allowing the frame 2 to be quickly disassembled for cleaning or replacement. The structure of the hexagonal slot 23 can effectively prevent misalignment during installation. In addition, the power supply 15 supplies power to the backlight source lamp 11 through the wiring port 12. The support plate 14 and the pillar 13 are fixed by the fastening bolts 19 to form a stable three-dimensional support, ensuring that the position of the light source does not shift during the detection process, thereby maintaining the uniformity of the illumination angle.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency optical detection device for detecting LGP, comprising a light-emitting chassis (1), characterized in that: The backlight lamp (11) is provided inside the light-emitting chassis (1), and a wiring port (12) for powering the backlight lamp (11) is provided on one side of the light-emitting chassis (1). The back of the light-emitting chassis (1) is symmetrically provided with support columns (13) on both sides. The lower end of the support column (13) is fixedly assembled with the light-emitting chassis (1) by fastening bolts (19). The upper end of the two support columns (13) distributed on both sides is fixedly installed with support plates (14). A power supply (15) is fixedly installed on the back of the support column (13) on one side. The power supply (15) is connected to the wiring port (12) through a wire. The support plate (14) is fixed with a support frame (16) on one side above the light-emitting chassis (1). The inner side of the support frame (16) is provided with an inner boss (17). The inner boss (17) is a rectangular ring structure. A detection lens (18) is slidably inserted into the inner side of the support frame (16). The lower edge of the detection lens (18) is mounted on the upper surface of the inner boss (17).

2. The optical detection device for high-efficiency detection of LGP according to claim 1, characterized in that: The light-emitting chassis (1) is covered with a frame (2), which surrounds the backlight source lamp (11).

3. The optical detection device for high-efficiency detection of LGP according to claim 2, characterized in that: A transparent plastic plate (21) is embedded and fixed on the inner side of the frame (2), and the transparent plastic plate (21) covers the backlight source lamp (11).

4. The optical detection device for high-efficiency detection of LGP according to claim 3, characterized in that: Both sides of the lower end of the frame (2) are fixedly installed with elastic clips (22), and the surface of the light-emitting base (1) is provided with a card slot (23). The surface of the elastic clip (22) is engaged with the inner side of the card slot (23).

5. The optical detection device for high-efficiency detection of LGP according to claim 1, characterized in that: The detection lens (18) comprises a first surface layer (1801), a middle layer (1802), and a second surface layer (1803) in sequence, with the middle layer (1802) fixed between the first surface layer (1801) and the second surface layer (1803).

6. The optical detection device for high-efficiency detection of LGP according to claim 5, characterized in that: Both the first surface layer (1801) and the second surface layer (1803) are made of transparent glass material.

7. The optical detection device for high-efficiency detection of LGP according to claim 6, characterized in that: The interlayer (1802) is made of polarizing film material.

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