CN213482492U

CN213482492U - Diffusion plate integrated with light guide structure

Info

Publication number: CN213482492U
Application number: CN202022182487.3U
Authority: CN
Inventors: 蔡正方; 李清华; 王星星
Original assignee: Dongguan Xinju Photoelectric Technology Co ltd
Current assignee: Hunan Hongyang Photoelectric Technology Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-06-18
Anticipated expiration: 2030-09-29

Abstract

The utility model provides a diffusion plate of integrated light guide structure, which comprises a refractive index n₁The plate body, be equipped with leaded light site layer in the plate body, leaded light site layer includes carving leaded light point in a plurality of lasers, and the terminal surface department of plate body is equipped with the light-collecting cavity, and the light-collecting cavity is the round platform column structure that inclines down, and the upper base in light-collecting cavity is located the section department of plate body, and the light-collecting intracavity packing has the refracting index to be n₂Light-collecting filling body of, n₁<n₂The front surface of the plate body is provided with a diffusion layer, the diffusion layer comprises a plurality of conical diffusion grooves, the bottom surfaces of the diffusion grooves are positioned on the front surface of the plate body, and the diffusion grooves are filled with a fillerFilled with a diffusion filling body. The utility model can guide the light entering from the end face to the front for outgoing, and can form a luminous effect with good uniformity, high light energy utilization rate, simple and reliable overall structure, long service life and smooth and flat surface; when the side-in type light-emitting module is applied, the structure of the module can be effectively simplified, and the light and thin design requirements can be effectively met.

Description

Diffusion plate integrated with light guide structure

Technical Field

The utility model relates to a diffuser plate specifically discloses an integrated light guide structure's diffuser plate.

Background

The light guide plate is arranged on optical plates such as glass and acrylic to form light guide dots, when light rays irradiate each light guide dot, the light rays can be diffused to each angle, and then the light rays are emitted from the front side of the light guide plate under the condition of damaging reflection. The diffusion plate is a plate structure which changes the path of light by physical or chemical means, and when the light meets two media with different refractive indexes in the path of light, the physical phenomena of refraction, reflection and scattering can occur, so that a soft and uniform lighting effect is realized.

The light guide plate is arranged in the lateral light-emitting module, is generally used in a product with high requirements on thinning design, and can be additionally provided with a diffusion plate on the front side of the light guide plate generally for the lateral light-emitting module with higher requirements on uniform light effect, but the thickness of the lateral light-emitting module is increased by the design, so that the lateral light-emitting module is not beneficial to thinning design, the whole structure is cumbersome, and the installation, use and operation are complicated.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a diffusion plate integrated with a light guide structure, which integrates the functions of light guiding and diffusion, can form a light emitting effect with good uniformity, and has a simple overall structure and a smooth and flat surface.

In order to solve the prior art problem, the utility model discloses an integrated light guide structure's diffuser plate, be n including the refracting index₁The plate body, be equipped with leaded light site layer in the plate body, leaded light site layer includes carving leaded light point in a plurality of lasers, and the terminal surface department of plate body is equipped with the light-collecting cavity, and the light-collecting cavity is the round platform column structure that inclines down, and the upper base in light-collecting cavity is located the section department of plate body, and the light-collecting intracavity packing has the refracting index to be n₂Light-collecting filling body of, n₁<n₂The front of the plate body is provided with a diffusion layer, the diffusion layer comprises a plurality of conical diffusion grooves, the bottom surfaces of the diffusion grooves are located on the front of the plate body, and diffusion filling bodies are filled in the diffusion grooves.

Furthermore, the laser inner-carved light guide point is a hemisphere, and the spherical surface of the laser inner-carved light guide point is right opposite to the front surface of the plate body.

Furthermore, two light collecting cavities are arranged and are respectively positioned on two opposite end faces of the plate body.

Further, the refractive index of the diffusion filling body is n₃，n₃>n₁。

Furthermore, a reflecting layer is arranged on the back surface of the plate body.

Furthermore, a fluorescent layer is arranged between the plate body and the reflecting layer.

The utility model has the advantages that: the utility model discloses a diffuser plate of integrated light guide structure, which integrates the functions of light guide and diffusion, can guide the light entering from the end surface to the front for outgoing, and can form the luminous effect with good uniformity, the light collecting cavity can effectively improve the collecting effect of the light energy, the light energy utilization rate is high, the whole structure is simple and reliable, the service life is long, the surface is smooth and flat, the installation and the use are convenient, and the surface of the diffuser plate is not easy to accumulate dirt such as dust; when the side-in type light-emitting module is applied, the structure of the module can be effectively simplified, the stability of the module is improved, and the light and thin design requirements of the module can be effectively met.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic cross-sectional view along a-a' in fig. 1.

The reference signs are: the light-collecting plate comprises a plate body 10, a light-guiding dot layer 20, laser inner-engraved light-guiding dots 21, a light-collecting cavity 30, a light-collecting filling body 31, a diffusion layer 40, a diffusion groove 41, a diffusion filling body 42, a reflection layer 50 and a fluorescent layer 60.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Refer to fig. 1 and 2.

The embodiment of the utility model discloses integrated light-directing structure's diffuser plate, the refracting index of making including glass or ya keli is n₁Plate body 10, plateBe equipped with light guide network point layer 20 in the body 10, light guide network point layer 20 includes carving leaded light point 21 in a plurality of lasers, carving leaded light point 21 is for carving the leaded light cavity structure that forms in through laser in the laser, the inside that light guide network point layer 20 is located plate body 10 can not receive external environment's influence, long service life, the terminal surface department of plate body 10 is equipped with light collecting cavity 30, light collecting cavity 30 is the round platform column structure that the side was fallen, the upper base that light collecting cavity 30 is located plate body 10's section department, the lower bottom that light collecting cavity 30 is close to plate body 10's center setting, the little radius one side that light collecting cavity 30 was located plate body 10 promptly is located plate body 10's terminal surface department, the inside that the major radius one side is located plate body 10, light₂Light collecting filling bodies 31, n₁<n₂The light sources such as the LEDs are disposed at the end face of the plate body 10, and for the upper bottom of the light collecting filler 31, the structure of the light collecting cavity 30 matches the refractive index difference between the light collecting filler 31 and the plate body 10, so as to effectively collect light by means of total reflection, reduce light leakage, and improve the utilization rate of light energy, the front surface of the plate body 10 is provided with the diffusion layer 40, the diffusion layer 40 includes a plurality of tapered diffusion grooves 41, preferably, the diffusion grooves 41 are cone-shaped structures, so as to effectively improve the diffusion effect, the bottom surfaces of the diffusion grooves 41 are located at the front surface of the plate body 10, the cone tops of the diffusion grooves 41 are disposed near the center of the plate body 10, the diffusion grooves 41 are filled with the diffusion fillers 42, the diffusion fillers 42 can not only improve the diffusion effect by increasing the refraction times of light, but also can ensure that the surface of the plate body 10.

When the light-collecting filler is applied, light sources such as LEDs are arranged on the end face of the plate body 10, light enters from the upper bottom of the light-collecting filler 31, and when the light reaches the side face of the light-collecting cavity 30, part of the light can be reflected to the center of the plate body 10 in a total reflection mode, so that the light energy collecting effect is effectively improved, light leakage is reduced, and the light energy utilization rate is improved; the light reaching the light guide dot layer 20 is guided to the side close to the front surface of the plate body 10 to be emitted; the light reaching the diffusion layer 40 is refracted at the edge of the diffusion groove 41, and the light passing through the top surface of the diffusion filling body 42 is further refracted, so that the diffusion and light uniformizing effect of the final emergent light can be effectively improved. The integrated light guide and diffusion integrated type side-entering light emitting module has the advantages of simple overall structure, integration of light guide and diffusion functions, capability of remarkably reducing the thickness of the side-entering light emitting module, simple application structure, smooth and flat surface, convenience in installation and use, difficulty in dust deposition and the like.

The light-collecting filling body 31 is made of a light-transmitting material, and the diffusing filling body 42 is made of a light-transmitting material, which can be a light-transmitting plastic or optical cement.

In the present embodiment, the laser inner-carved light guide point 21 is a hemisphere, and the spherical surface of the laser inner-carved light guide point 21 faces the front surface of the plate 10, that is, the spherical surface of the laser inner-carved light guide point 21 faces the diffusion layer 40.

In this embodiment, there are two light collecting cavities 30, and the two light collecting cavities 30 are respectively located on two opposite end surfaces of the plate body 10, so that the light-homogenizing and diffusing effect can be effectively improved.

In the present embodiment, the refractive index of the diffusion filler 42 is n₃，n₃>n₁The refractive index of the diffusion filling body 42 is smaller than that of the plate body 10, so that light can be effectively prevented from being totally reflected back to the inside of the plate body 10 at the edge of the diffusion groove 41, and dark spots caused by insufficient brightness at the diffusion groove 41 are avoided.

In this embodiment, the back surface of the plate body 10 is provided with a reflective layer 50, and preferably, the reflective layer 50 may be a light reflective coating or a high-gloss aluminum reflective layer 50, so as to effectively prevent light from leaking out of the back surface and causing loss.

Based on the above embodiment, the fluorescent layer 60 is disposed between the plate body 10 and the reflective layer 50, and preferably, the fluorescent layer 60 is a fluorescent glue layer, which can adjust the color of light to meet different use requirements.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A diffusion plate integrated with light guide structure is characterized by comprising a refractive index n₁The plate body (10), be equipped with leaded light dot layer (20) in plate body (10), leaded light dot layer (20) include carving leaded light point (21) in a plurality of lasers, the terminal surface department of plate body (10) is equipped with light-collecting cavity (30), light-collecting cavity (30) is the round platform column structure that inclines, the upper base in light-collecting cavity (30) is located the section department of plate body (10), light-collecting cavity (30) intussuseption is filled with the refracting index and is n₂N of the light-collecting filler (31), n₁<n₂The front surface of the plate body (10) is provided with a diffusion layer (40), the diffusion layer (40) comprises a plurality of conical diffusion grooves (41), the bottom surfaces of the diffusion grooves (41) are located on the front surface of the plate body (10), and diffusion filling bodies (42) are filled in the diffusion grooves (41).

2. The diffuser plate of integrated light guide structure as claimed in claim 1, wherein the laser inner engraved light guide points (21) are hemispheres, and the spherical surface of the laser inner engraved light guide points (21) is opposite to the front surface of the plate body (10).

3. The diffuser plate of integrated light guide structure as claimed in claim 1, wherein there are two light collecting cavities (30), and two light collecting cavities (30) are respectively located on two opposite end faces of the plate body (10).

4. The diffuser plate of claim 1, wherein the refractive index of the diffuser fill body (42) is n₃，n₃>n₁。

5. The diffuser plate of an integrated light guide structure according to claim 1, wherein the back surface of the plate body (10) is provided with a reflective layer (50).

6. The diffuser plate of integrated light guide structure according to claim 5, wherein a fluorescent layer (60) is disposed between the plate body (10) and the reflective layer (50).