Light guide structure for camera module

Abstract

The light guide structure comprises a light guide plate, a first reflecting layer and a shading layer, an avoiding groove is formed in the middle of the light guide plate, a plurality of lamp grooves are formed in the bottom wall of the light guide plate in a concave mode, the lamp grooves are distributed along the periphery of the avoiding groove, the first reflecting layer is attached to the bottom wall of the light guide plate, and the shading layer is attached to the bottom wall of the light guide plate. The shading layer is arranged on the upper wall of the light guide plate and can partially cover or partially cover the upper wall of the light guide plate, and a light emitting area is arranged at the position, away from the shading layer, of the light guide plate. In the actual design, the concave lamp groove is integrally formed in the light guide plate, so that lamp beads are convenient to install, meanwhile, light rays of the lamp beads can directly irradiate the wall face of the light guide plate, the light rays are reflected into the main body of the light guide plate through the first reflecting layer, and scattering of the light rays is avoided; through the arrangement of the light shielding layer, light leakage can be avoided, and light emitting at the preset position, such as the periphery of the side wall or the upper wall of the light guide plate, is achieved through the arrangement of the light shielding layer.

Description

Technical Field

[0001] The utility model relates to the field of lamp structures, in particular to a light guide structure for a camera module. Background Art

[0002] In the prior art, the brightness of the light of the breathing lamp assembly changes gradually from dark to bright and then from bright to dark, which feels like breathing. It is a combination of multiple matrix-arranged LED lamp beads, and different effects are obtained by controlling the on and off of LED lamp beads in different positions.

[0003] However, the light source produced by this control method has poor uniformity, and requires the use of a large number of LED lamp beads to complete it, and also needs to be equipped with a relatively complex IC control chip, and the manufacturing cost, manufacturing precision and power consumption are all high.

[0004] Especially for the breathing light installed on the camera module, its size is small and there is a problem of large span. Therefore, how to achieve uniform light emission of the light source while effectively ensuring the predetermined effect is the key to the design. Utility Model Content

[0005] The main purpose of the utility model is to propose a light-guiding structure for a camera module, aiming to design a light-guiding structure that can achieve a more uniform lighting effect and has a simple structure.

[0006] To achieve the above object, the utility model proposes a light guide structure for a camera module, comprising:

[0007] A light guide plate, wherein a relief groove is provided in the middle of the light guide plate, and a plurality of light grooves are recessed on the bottom wall of the light guide plate, and the light grooves are distributed along the periphery of the relief groove;

[0008] A first reflective layer, wherein the first reflective layer is attached to a bottom wall of the light guide plate;

[0009] A light shielding layer is arranged on the upper wall of the light guide plate and can cover part of the upper wall or part of the upper wall. A light emitting area is arranged at a position of the light guide plate away from the light shielding layer.

[0010] In the actual design of the technical solution of the utility model, the light groove is formed integrally with the light guide plate to facilitate the installation of the lamp beads, and at the same time, the light of the lamp beads can be directly irradiated on the wall surface of the light guide plate, and the light is reflected into the main body of the light guide plate through the first reflection layer, thereby avoiding the scattering of the light; the light leakage can be avoided by setting the light shielding layer, and the light is emitted at a predetermined position, for example, the outer periphery of the side wall or upper wall of the light guide plate.

[0011] In one of the designs, the light-emitting area is ring-shaped. When multiple lamp beads are lit, the light can be evenly presented in the light-emitting area. Of course, the control system can also be used to adjust the opening or closing of multiple lamp beads, so as to realize the lighting in a flowing manner and achieve a horse-running effect (RGB lamp beads can be used to achieve the coordination of different colors and achieve richer lighting effects). BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The first embodiment of the utility model is exploded Figure 1 ;

[0013] Figure 2 The first embodiment of the utility model is exploded Figure 2 ;

[0014] Figure 3 A three-dimensional diagram of the first embodiment of the utility model Figure 1 ;

[0015] Figure 4 A three-dimensional diagram of the first embodiment of the utility model Figure 2 ;

[0016] Figure 5 It is a partial cross-sectional view of the first embodiment of the utility model;

[0017] Figure 6 is a schematic diagram of a second embodiment;

[0018] Figure 7 is a schematic diagram of a third embodiment;

[0019] Figure 8 It is a schematic diagram of the fourth embodiment.

[0020] In the figure, 1 is a light guide plate, 10 is a light emitting area, 11 is an avoidance groove, 12 is a lamp groove, 21 is a first reflective layer, 22 is a second reflective layer, 3 is a shading layer, 4 is an optical double-sided tape, 5 is a notch, 6 is a slot, and 100 is an avoidance position. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0024] like Figures 1 to 8 As shown, a light guide structure for a camera module includes:

[0025] A light guide plate 1, wherein a relief groove 11 is provided in the middle of the light guide plate 1, and a plurality of light grooves 12 are recessed on the bottom wall of the light guide plate 1, and the light grooves 12 are distributed along the periphery of the relief groove 11;

[0026] A first reflective layer 21, wherein the first reflective layer 21 is attached to the bottom wall of the light guide plate 1;

[0027] The light shielding layer 3 is arranged on the upper wall of the light guide plate 1 and can cover part of the upper wall or partially cover the upper wall. The light guide plate 1 is provided with a light emitting area 10 at a position away from the light shielding layer 3 .

[0028] In the actual design, the light groove 12 is integrally formed in the light guide plate 1, so as to facilitate the installation of the lamp beads, and at the same time, the light of the lamp beads can be directly irradiated on the wall of the light guide plate 1, and the light is reflected into the main body of the light guide plate 1 through the first reflection layer 21, thereby avoiding the scattering of light; the light leakage can be avoided by setting the light shielding layer 3, and the light is emitted at a predetermined position, for example, the outer periphery of the side wall or upper wall of the light guide plate 1.

[0029] In one of the designs, the light emitting area 10 is ring-shaped. When multiple lamp beads are lit, the light can be evenly presented in the light emitting area 10. Of course, the control system can also be used to adjust the opening or closing of multiple lamp beads, thereby realizing the lighting in a flowing manner and achieving a horse racing effect. RGB lamp beads can be used to achieve the coordination of different colors and achieve richer lighting effects.

[0030] Specifically, the bottom wall of the light shielding layer 3 is provided with a second reflective layer 22 that is in contact with the light guide plate 1 , thereby guiding the light toward the light exiting area 10 .

[0031] That is, the cooperation between the first reflective layer 21 and the second reflective layer 22 realizes two-sided white high-reflective material (reducing the loss of light reflection). After reflecting the light to the light emitting area 10, it is diffusely reflected by the diffusion particles of the light guide plate 1 and reflected to the light emitting area 10 to achieve the light emitting effect.

[0032] in, Figure 1-Figure 4 The structure is a light guide plate 1 with 3 gaps and 58 lamp beads. Figure 6 The structure of the light guide plate 1 has 3 gaps and 512 lamp groups. Figure 7 The structure of the light guide plate 1 has 4 notches and 58 lamp groups. Figure 8 The light guide plate 1 has 4 notches and 512 lamp groups.

[0033] In the embodiment of the utility model, the first reflective layer 21 and the second reflective layer 22 are white reflective films or white reflective coatings, wherein white reflective films are preferred for ease of production and lower production costs; using white reflective coatings will result in more complicated equipment costs and production steps.

[0034] Specifically, the first reflective layer 21 is attached to the light guide plate 1 through an optical double-sided adhesive tape 4 or a glue layer. In a preferred embodiment, the optical double-sided adhesive tape 4 is used to effectively reduce the absorption of light.

[0035] In the embodiment of the utility model, the avoidance groove 11 is circular in shape, and the avoidance groove 11 is provided with a plurality of notches 5 , and some lamp grooves 12 are provided on both sides of the notches 5 .

[0036] Specifically, there are three or four notches 5, and the thickness of the light guide plate 1 is 0.5mm-0.55mm (the more lamp beads there are, the thicker the thickness is); there are 8-12 lamp slots 12. (The number of lamp beads and the number of notches 5 are also compatible. Of course, the more the number, the better the lighting effect when used as a marquee.

[0037] In the embodiment of the utility model, the side wall portion of the lamp trough 12 extends through and into the avoidance groove 11 to form a groove 6. Of course, it can also be set according to needs, and the lamp trough 12 may not be set through, and the same technical effect can be achieved. The through-setting structure can facilitate the installation of the lamp beads, which can be understood as the lamp beads being directly installed on the PCB board, and the direct installation of the light guide plate 1 can be achieved.

[0038] Specifically, the first reflective layer 21 , the light shielding layer 3 and the second reflective layer 22 are all provided with avoidance positions 100 that cooperate with the avoidance grooves 11 .

[0039] In an embodiment of the utility model, the light shading layer 3 is black, the light emitting area 10 is arranged on the upper wall of the light guide plate 1 and is in a ring shape, and the light emitting area 10 is arranged at the outer periphery of the light shading layer 3. Of course, the specific shape is not limited to a ring, and it can also be based on actual design, wherein the ring shape can be a circular ring or a rectangular ring, and it is mainly adaptively adapted according to the structure of the actual camera module.

[0040] In an embodiment of the utility model, the light guide plate 1 is provided with diffusion particles, wherein the light guide plate 1 is a transparent material or a translucent material, such as injection-molded PC material, and diffusion particles are added therein (which can be understood as atomization), thereby realizing diffuse reflection of light, making the light softer, and realizing light coordination between lamp beads.

[0041] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A light guide structure for a camera module, characterized in that: include: A light guide plate, wherein a relief groove is provided in the middle of the light guide plate, and a plurality of light grooves are recessed on the bottom wall of the light guide plate, and the light grooves are distributed along the periphery of the relief groove; A first reflective layer, wherein the first reflective layer is attached to a bottom wall of the light guide plate; A light shielding layer is arranged on the upper wall of the light guide plate and can cover part of the upper wall or part of the upper wall. A light emitting area is arranged at a position of the light guide plate away from the light shielding layer.

2. The light guide structure for a camera module according to claim 1, characterized in that: The bottom wall of the light-shielding layer is provided with a second reflecting layer which is in contact with the light guide plate.

3. The light guide structure for a camera module according to claim 2, characterized in that: The first reflective layer and the second reflective layer are white reflective films or white reflective coatings.

4. The light guide structure for a camera module according to claim 1, characterized in that: The first reflective layer is attached to the light guide plate via an optical double-sided adhesive or a glue layer.

5. The light guide structure for a camera module according to claim 1, characterized in that: The avoidance groove is circular in shape and is provided with a plurality of notches, and some lamp troughs are provided on both sides of the notches.

6. The light guide structure for a camera module according to claim 5, characterized in that: The number of the notches is three or four, the thickness of the light guide plate is 0.5mm-0.55mm; the number of the lamp troughs is 8-12.

7. The light guide structure for a camera module according to claim 1, characterized in that: The side wall portion of the lamp trough extends through and into the avoidance groove to form an open groove.

8. The light guide structure for a camera module according to claim 1, characterized in that: The first reflective layer, the light shielding layer and the second reflective layer are all provided with avoidance positions matched with the avoidance grooves.

9. The light guide structure for a camera module according to claim 1, characterized in that: The light shielding layer is black, the light emitting area is arranged on the upper wall of the light guide plate and is ring-shaped, and the light emitting area is arranged at the periphery of the light shielding layer.

10. The light guide structure for a camera module according to claim 1, characterized in that: The light guide plate is provided with diffusion particles.

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