CN220252203U

CN220252203U - Optical assembly for improving bright spray of light-emitting side

Info

Publication number: CN220252203U
Application number: CN202321803841.7U
Authority: CN
Inventors: 段鹏程; 冀国彪; 王云强; 韩星星
Original assignee: Shanxi Yuhao New Optical Material Co ltd
Current assignee: Shanxi Yuhao New Optical Material Co ltd
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2023-12-26
Anticipated expiration: 2033-07-10

Abstract

The utility model belongs to the technical field of appearance test, and particularly discloses an optical component for improving bright spray of a light-emitting side, which comprises a light guide plate, a lamplight group, a side reflector and a cushion block, wherein the light guide plate is provided with a first side face, a second side face, a third side face and a fourth side face; the light group is arranged below the first side face and comprises at least two light sources; the length of the side inverse is smaller than that of the third side surface, and the side inverse is attached to the middle of the third side surface; the cushion block comprises a first cushion block, a second cushion block and a third cushion block, wherein the first cushion block is attached to the second side face, the second cushion block is vertically connected with the first cushion block, the second cushion block is attached to the third side face, the third cushion block is connected with the second cushion block, the third cushion block is not contacted with the third side face, and the distance between the third cushion block and the third side face is larger than the thickness of the side face. According to the utility model, through the improved design of the cushion block, the side reverse tilting is avoided, and meanwhile, the bright spraying phenomenon is improved.

Description

Optical assembly for improving bright spray of light-emitting side

Technical Field

The utility model relates to the technical field of light guide plates, in particular to an optical component for improving bright spray of a light-emitting side.

Background

The light guide plate (lightguide plate) is made of an optical acrylic/PC plate, and then a high-tech material with extremely high refractive index and no light absorption is used for printing light guide points on the bottom surface of the optical acrylic plate by using laser engraving, V-shaped cross grid engraving and UV screen printing technology. The light emitted from the lamp is absorbed by the optical acrylic plate and stays on the surface of the optical acrylic plate, when the light rays are emitted to each light guide point, the reflected light can be diffused towards each angle, and then the reflection condition is destroyed and emitted from the front surface of the light guide plate. The light guide plate can uniformly emit light through various light guide points with different densities and sizes. The reflector plate is used for reflecting the light exposed from the bottom surface back to the light guide plate so as to improve the use efficiency of the light; under the condition of the same area of luminous brightness, the luminous efficiency is high, and the power consumption is low.

Some types of light guide plates are required to be opposite to the left and right sides of the light emitting side, as shown in fig. 1, in order to ensure that the light guide plate 1 does not shake left and right in the backlight module, a cushion block 3 is added to the left and right sides of the light emitting side 2 to fix the light guide plate 1. However, in the aging test, the side reverse 4 of the light emitting side 2 is easily tilted at the pad 3 to cause a left and right dark angle. At present, some light guide plates also require that the left/right cushion block at the light emitting side is not stuck with the side opposite, so that a gap 5 between the cushion block and the side opposite can cause obvious bright spray phenomenon. In the modification of the bright spray, the prior art is mainly realized by means of screen dot modification, but the whole layout of the light guide points of the existing light guide plate is required to be adjusted by screen dot modification, the position and the degree are difficult to control, and the efficiency is low.

Disclosure of Invention

The utility model aims to provide an optical component for improving light-emitting side bright spray, which avoids side reverse tilting and improves the bright spray phenomenon through improving the design of a cushion block under the condition of not changing the dot layout of the original light guide plate.

In order to achieve the above-mentioned purpose, the present utility model provides an optical assembly for improving bright spray on a light-emitting side, which adopts the following technical scheme:

an optical assembly for improving light exit side bright spray comprising:

a light guide plate having a first side, a second side, a third side, and a fourth side;

the light group is arranged below the first side face and comprises at least two light sources;

a side inverse, wherein the length of the side inverse is smaller than that of the third side surface, and the side inverse is attached to the middle part of the third side surface;

the cushion block comprises a first cushion block, a second cushion block and a third cushion block, wherein the first cushion block is attached to the second side face, the second cushion block is vertically connected with the first cushion block, the second cushion block is attached to the third side face, the third cushion block is connected with the second cushion block, the third cushion block is not contacted with the third side face, and the distance between the third cushion block and the third side face is larger than the thickness of the side face.

Further, the first gasket is integrally connected with the second gasket.

Further, the third gasket is integrally connected with the second gasket.

Further, the light source is an LED lamp.

Further, the distance between each light source in the light group and the first side is equal, and the distance between two adjacent light sources is equal.

Further, the number of the lamp sources is 5-10.

Further, the thickness of the third gasket is half the thickness of the second gasket.

Further, the upper end face of the third gasket is flush with the upper end face of the second gasket.

Further, the thickness of the first gasket is equal to the thickness of the second gasket.

The beneficial effects of the utility model are as follows: according to the optical component for improving the bright spraying of the light-emitting side, under the condition of not changing the original mesh point layout of the light guide plate, the cushion block is structurally improved, in particular, a third cushion block connected with a second cushion block is added, the third cushion block is not contacted with a third side surface serving as the light-emitting side, a certain gap is reserved, after improvement, on one hand, in an aging test, the side reflection cannot be tilted to cause left and right dark angles, and on the other hand, the bright spraying phenomenon is effectively improved or even eliminated due to the fact that the gap exists between the cushion block and the side reflection.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

Fig. 1 shows a structure of a light guide plate according to the prior art, in which a left/right pad of a light emitting side is not attached with a side reflection, 1 is the light guide plate, 2 is the light emitting side, 3 is the pad, 4 is the side reflection, and 5 is a gap.

Fig. 2 shows a block diagram of an optical assembly with improved light-emitting side lighting, according to an embodiment of the utility model.

In fig. 2, 100 is a light guide plate, 101 is a first side, 102 is a second side, 103 is a third side, 104 is a fourth side, 200 is a light group, 201 is a light source, 300 is a side-opposite, 400 is a second motor, 401 is a first spacer, 402 is a second spacer, and 403 is a third spacer.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples.

An embodiment of the present utility model provides an optical assembly for improving bright spray on a light emitting side, as shown in fig. 2, the optical assembly for improving bright spray on a light emitting side includes:

the light guide plate 100, the light guide plate 100 has a first side 101, a second side 102, a third side 103, and a fourth side 104.

In this embodiment, the first side 101 is the light incident side, and the third side 103 is the light emergent side. It is understood that, in different application scenarios, the light incident side and the light emergent side of the light guide plate may be other sides, and the light incident side or the light emergent side may be one or more, typically 1, or more than 3.

The light group 200, the light group 200 is disposed below the first side 101, and the light group 200 includes at least two light sources 201.

A side reflection 300, wherein the length of the side reflection 300 is smaller than the length of the third side surface 103, and the side reflection 300 is attached to the middle of the third side surface 103.

It should be noted that, the positional relationship to be described in the middle of the third side surface 103 of the side reflection 300 may be as shown in fig. 2, that is, the side reflection 300 is spaced from the left and right sides of the third side surface 103 by a certain distance, and the distance between the side reflection 300 and the left and right sides is not necessarily the same, in this embodiment, the left side needs to be provided with a spacer to ensure that the light guide plate 100 will not shake left and right in the backlight module, so the distance between the side reflection 300 and the left side of the third side surface 103 is longer, and a space is provided for installing the spacer.

The cushion block 400, the cushion block 400 includes a first cushion block 401, a second cushion block 402 and a third cushion block 403, the first cushion block 401 is attached to the second side surface 102, the second cushion block 403 is vertically connected with the first cushion block 401 and the second cushion block 402 is attached to the third side surface 103, the third cushion block 403 is connected with the second cushion block 402, the third cushion block 403 is not contacted with the third side surface 103, and the distance between the third cushion block 402 and the third side surface 103 is greater than the thickness of the side reaction 300.

The utility model is mainly improved by the structure of the cushion block 400, wherein the first cushion block 401 and the second cushion block 402 can be integrally connected, the first cushion block 401 is attached to the second side surface 102, and the second cushion block 402 is attached to the third side surface 103, so that the light guide plate 100 cannot shake left and right when being applied to a backlight module under the combined action of the first cushion block 401 and the second cushion block 402. The third gasket 403 is connected with the second gasket 402, and the third gasket 403 is not contacted with the third side 103, and is greater than the thickness of the side reflection 300 with the distance of the third side 103, and under this structural improvement, ageing experiments are carried out, the side reflection 300 is not tilted any more, so that the left and right dark corners are not caused, and the light emitting effect is better. On the other hand, due to the design of the third spacer 403, the original gap is greatly reduced, and experiments show that the obvious bright spray phenomenon caused by the structure shown in fig. 1 is effectively improved, and the bright spray phenomenon is basically not existed and the light is uniform.

Therefore, when the utility model aims at the light guide plate with opposite sides at the left/right cushion block of the light emitting side, the problem that the existing cushion block and the gap between the opposite sides cause obvious bright spray can be solved without dot compensation on the original light guide plate (figure 1), and only the cushion block structure is required to be redesigned and manufactured, so that the processing cost is reduced, the processing efficiency is improved, and good economic benefit is realized.

In some embodiments, the third shim 403 is integrally connected to the second shim 402.

For example, the spacer 400 may be integrally formed with the first spacer 401, the second spacer 402, and the third spacer 403.

In some embodiments, the size of the spacer 400 is limited, specifically, the thickness of the third spacer 403 is half of the thickness of the second spacer 402, and the upper end surface of the third spacer 403 is flush with the upper end surface of the second spacer 402. The thickness of the first spacer 40 is equal to the thickness of the second spacer 403.

In this embodiment, the third spacer 403 is set to 2.5 times the thickness of the side mirror 300, and the light emission quality is detected based on the specific size of the pad 400 determined by this, so that the light emission is uniform, and no bright spray is basically observed.

In some embodiments, the light source 201 is an LED light.

In some embodiments, the plurality of light sources 201 are arranged in a uniform array in the horizontal direction, as shown in fig. 2, each light source 201 in the light group 200 is equidistant from the first side 101, and the distances between two adjacent light sources 201 are equal.

In some embodiments, the number of the light sources is 5 to 10, as shown in fig. 2, and may be 7.

The above embodiments are only for illustrating the present utility model, not for limiting the present utility model, and various changes and modifications may be made by one of ordinary skill in the relevant art without departing from the spirit and scope of the present utility model, and therefore, all equivalent technical solutions are also within the scope of the present utility model, and the scope of the present utility model is defined by the claims.

Claims

1. An optical assembly for improving light-emitting side bright spray, comprising:

2. The optical assembly of claim 1, wherein the first gasket is integrally connected to the second gasket.

3. The optical assembly of claim 1, wherein the third gasket is integrally connected to the second gasket.

4. The optical assembly of claim 1, wherein the light source is an LED lamp.

5. The optical assembly of claim 1, wherein each light source in the light set is equidistant from the first side and adjacent light sources are equidistant.

6. The optical assembly of claim 5, wherein the number of light sources is 5-10.

7. An optical assembly for improving light emitting side light spraying as defined in claim 1, wherein the thickness of the third spacer is half the thickness of the second spacer.

8. The optical assembly of claim 1, wherein an upper end surface of the third spacer is flush with an upper end surface of the second spacer.

9. The optical assembly of claim 1, wherein the thickness of the first spacer is equal to the thickness of the second spacer.