CN210119595U

CN210119595U - Light guide plate

Info

Publication number: CN210119595U
Application number: CN201921124734.5U
Authority: CN
Inventors: 黄爱群; 阮绪红
Original assignee: DONGGUAN YUANLI ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: DONGGUAN YUANLI ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-02-28
Anticipated expiration: 2029-07-16

Abstract

The utility model relates to a light guide plate technical field, more specifically say, it relates to a light guide plate, and its technical scheme main points are: the light guide plate comprises a light guide plate body, wherein one side wall of the light guide plate body is a light incident surface, two opposite surfaces of the light guide plate body are a light emergent surface and a reflecting surface respectively, a plurality of light guide points are distributed on the reflecting surface, the light emergent surface is provided with arc-shaped convex structures which are regularly and continuously arranged, and the arc-shaped convex structures are perpendicular to the light incident surface. The utility model discloses a light guide plate has the advantage that improves the light utilization in effective visual area.

Description

Light guide plate

Technical Field

The utility model relates to a light guide plate technical field, more specifically say, it relates to a light guide plate.

Background

The light guide plate generally includes a light incident surface, a light emergent surface connected to the light incident surface, and a reflecting surface opposite to the light emergent surface. In the side-incident light source module, light emitted from a light emitting element (e.g., an LED lamp) disposed beside a side surface (i.e., an incident surface) of a light guide plate is guided to a front surface (i.e., an emergent surface) of the light guide plate through a reflecting surface to form a surface light source.

In order to make the light emitted from the light-emitting surface form a uniform surface light source, light guide points (network-shaped micro protrusions or recesses) are generally distributed on the reflecting surface, and when the light strikes each light guide point, the reflected light is diffused at various angles, and then the light is emitted from the light-emitting surface of the light guide plate after the total reflection condition is destroyed, so as to form the surface light source.

However, since the light is scattered by the light guide points, the light transmitted through the light guide plate is emitted to various different directions in a dispersed manner, and thus the angle of the light emitted from the light emitting surface is large, and thus the light cannot be effectively utilized in the effective viewing area of the light guide plate.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a light guide plate has the advantage that improves the light utilization in effective visual area.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a light guide plate, includes the light guide plate body, and this light guide plate body one side lateral wall is into the plain noodles, and two relative surfaces of this light guide plate body are play plain noodles and plane of reflection respectively, the plane of reflection distributes and has a plurality of leaded light points, it has the circular arc protruding structure of regular continuous arrangement to go out the plain noodles, circular arc protruding structure is perpendicular with going into the plain noodles.

Through adopting above-mentioned technical scheme, light enters into the inside total reflection that carries out of light guide plate body from going into the plain noodles, destroys the total reflection of light through the leaded light point and becomes diffuse reflection, then jets out light from going out the plain noodles, changes the refraction angle of light through the protruding structure of circular arc on the plain noodles to reach the effect of spotlight, and then make the reasonable utilization of light in effective visual area, and the sensitive surface of the protruding structure of circular arc is great, thereby improve the homogeneity that light jetted out, and then make light softer.

The utility model discloses further set up to: the radius value range of the arc bulge structure is 0.07 mm-0.1 mm.

By adopting the technical scheme, the arc convex structure with the radius value ranging from 0.07mm to 0.1mm can adjust most of light rays to the positive visual angle of the light-emitting surface, so that the light rays are reasonably distributed in the effective visual area of the light-emitting surface.

The utility model discloses further set up to: the depth value range between two adjacent arc convex structures is 1-7 mu m.

By adopting the technical scheme, the depth value range between two adjacent arc convex structures is between 1 mu m and 7 mu m, so that most light rays can be adjusted to the positive visual angle of the light-emitting surface, and the light rays are reasonably distributed in the effective visual area of the light-emitting surface.

The utility model discloses further set up to: the light guide plate body is made of polycarbonate, polymethyl methacrylate or acrylic synthetic resin materials.

By adopting the technical scheme, the light guide plate body made of polycarbonate, polymethyl methacrylate or acrylic synthetic resin material has extremely high light transmittance and reflectivity and does not absorb light.

The utility model discloses further set up to: the light guide plate body is of a flat plate structure or a wedge-shaped structure.

To sum up, the utility model discloses following beneficial effect has:

firstly, light enters the light guide plate body from the light incident surface for total reflection, the total reflection of the light is destroyed by the light guide points to be changed into diffuse reflection, then the light is emitted from the light emitting surface, the refraction angle of the light is changed through the arc convex structures on the light emitting surface, so that the light condensation effect is achieved, the light is reasonably utilized in an effective visual area, and the light receiving surface of the arc convex structures is larger, so that the uniformity of the emitted light is improved, and the light is softer;

secondly, the light guide plate body made of polycarbonate, polymethyl methacrylate or acrylic synthetic resin material has extremely high light transmittance and reflectivity and does not absorb light.

Drawings

FIG. 1 is a top view of a light incident surface of a light guide plate body according to the present embodiment;

FIG. 2 is a top view of the reflection surface of the light guide plate body in the present embodiment;

fig. 3 is a side view of the light incident surface of the light guide plate body in the embodiment.

In the figure: 1. a light guide plate body; 2. a light incident surface; 3. a light-emitting surface; 4. a reflective surface; 5. a light guide point; 6. and (4) an arc convex structure.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

A light guide plate, as shown in fig. 1 and fig. 2, comprising a light guide plate body 1, wherein the light guide plate body 1 is made of polycarbonate, polymethyl methacrylate or acrylic synthetic resin, the light guide plate body 1 is a flat plate structure or a wedge-shaped structure, and the light guide plate body 1 in this embodiment is a flat plate structure. This 1 side of light guide plate body lateral wall is income plain noodles 2, and two relative surfaces of this light guide plate body 1 are play plain noodles 3 and plane of reflection 4 respectively, and plane of reflection 4 distributes and has a plurality of anomalous leaded light points 5, and leaded light point 5 forms the circular arc concave point through mechanical impact, compares laser mode of dotting and is more smooth to there is not the formation of volcanic entrance, handles softer to the light, thereby improves the homogeneity and the production yield of light.

As shown in fig. 1 and 3, the circular arc protrusion structures 6 are arranged on the surface of the light emitting surface 3 in a regular and continuous manner, the circular arc protrusion structures 6 are perpendicular to the light incident surface 2, light enters the light guide plate body 1 from the light incident surface 2 for total reflection, total reflection of the light is destroyed by the light guide points 5 to become diffuse reflection, then the light is emitted from the light emitting surface 3, the refraction angle of the light is changed by the circular arc protrusion structures 6 on the light emitting surface 3, so that the light condensing effect is achieved, the light is reasonably utilized in an effective visual area, the light receiving surface of the circular arc protrusion structures 6 is large, the uniformity of light emission is improved, and the light is softer.

As shown in fig. 3, specifically, the radius of the arc protrusion structures 6 ranges from 0.07mm to 0.1mm, and the depth between two adjacent arc protrusion structures 6 ranges from 1 μm to 7 μm, so that most of the light can be adjusted to the normal viewing angle of the light emitting surface 3 by the arc protrusion structures 6, and the light is reasonably distributed in the effective viewing area of the light emitting surface 3.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A light guide plate, characterized in that: the light guide plate comprises a light guide plate body (1), wherein one side wall of the light guide plate body (1) is a light incident surface (2), two opposite surfaces of the light guide plate body (1) are a light emergent surface (3) and a reflecting surface (4) respectively, a plurality of light guide points (5) are distributed on the reflecting surface (4), the surface of the light emergent surface (3) is provided with arc convex structures (6) which are regularly and continuously arranged, and the arc convex structures (6) are perpendicular to the light incident surface (2).

2. The light guide plate according to claim 1, wherein: the radius value range of the arc bulge structure (6) is 0.07 mm-0.1 mm.

3. The light guide plate according to claim 1 or 2, wherein: the depth value range between two adjacent arc convex structures (6) is 1-7 mu m.

4. The light guide plate according to claim 1, wherein: the light guide plate body (1) is made of polycarbonate, polymethyl methacrylate or acrylic synthetic resin materials.

5. The light guide plate according to claim 1, wherein: the light guide plate body (1) is of a flat plate structure or a wedge-shaped structure.