LED lens, light source module and display device

Abstract

The LED lens comprises a lens body, the surface of one side of the lens body is an installation bottom face, the surface of the other side, away from the installation bottom face, of the lens body is a light-emitting curved face protruding outwards, the edge of the outer side of the light-emitting curved face is provided with a step structure, and the step structure is arranged on the edge of the outer side of the light-emitting curved face. The step structure is used for converging the emergent light towards the front of the light-emitting curved surface, and through the arrangement of the step structure, the light emitted through the step structure can increase the peripheral brightness of light spots, increase the light spots, improve peripheral yellow spots and improve the light uniformity, so that the use effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lenses, and in particular to an LED lens, a light source module and a display device. Background Art

[0002] The TV panel market is generally divided into high-end and low-end TV panels. High-end TV panels are characterized by low OD (outer diameter) and uniform light distribution. However, most existing LED lenses produce yellow spots around the periphery of the light spot during use, affecting light uniformity and resulting in poor performance. Utility Model Content

[0003] Based on this, it is necessary to provide an LED lens and a display device, aiming to solve the technical problem that most existing LED lenses will produce more yellow spots on the periphery of the light spot during use, affecting the uniformity of light, thereby resulting in poor use effect of the LED lens.

[0004] In the first aspect, the utility model provides an LED lens, which includes a mirror body, one side surface of the mirror body is a mounting bottom surface, and the other side surface of the mirror body facing away from the mounting bottom surface is a light-emitting curved surface protruding outward, and the outer edge of the light-emitting curved surface is provided with a step structure, which is used to converge the emitted light to the front of the light-emitting curved surface.

[0005] In one embodiment, the step structure includes a first step and a second step, and the first step and the second step are sequentially arranged in a direction away from the installation bottom surface.

[0006] In one embodiment, the LED lens further includes a protrusion, and the protrusion is arranged at the center of the light-emitting curved surface.

[0007] In one embodiment, the middle portion of the light-emitting curved surface is a concave surface, and the convex portion is provided at the center of the concave surface.

[0008] In one embodiment, a light entrance groove is provided on a side of the mirror body away from the light exit curved surface, and light emitted by the LED is emitted from the light entrance groove through the light exit curved surface, and part of the light is emitted from the step structure.

[0009] In one embodiment, the concave surface is opposite to the light incident groove, and the central axis of the concave surface coincides with the central axis of the light incident groove.

[0010] In one embodiment, a mounting groove is further provided on the side of the mirror body facing away from the light-emitting curved surface, the mounting groove is connected to the light-incident groove, and the mounting groove is used to mount the LED.

[0011] In one embodiment, the LED lens further includes a support member, and the support member is mounted on the mounting bottom surface.

[0012] In a second aspect, the present invention further provides a light source module, which includes the LED lens of any one of the above embodiments.

[0013] In a third aspect, the present invention further provides a display device, which includes a display screen and the light source module of the above embodiment.

[0014] The implementation of the present invention will have the following beneficial effects:

[0015] The LED lens, light source module and display device of the present invention are adopted. One side surface of the mirror body of the LED lens is the mounting bottom surface, and the other side surface of the mirror body facing away from the mounting bottom surface is a light-emitting curved surface protruding outward. The outer edge of the light-emitting curved surface is provided with a step structure. The step structure is used to converge the emitted light toward the front of the light-emitting curved surface. By providing the step structure, the light emitted through the step structure can enhance the peripheral brightness of the light spot while enlarging the light spot, improve the peripheral yellow spot, and improve the light uniformity, thereby improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] in:

[0018] Figure 1 Schematic diagram of an axonometric view of an LED lens in one embodiment.

[0019] Figure 2 for Figure 1 A half-section view of the LED lens shown.

[0020] Figure 3 for Figure 2 A partial enlarged schematic diagram of part A in the LED lens shown.

[0021] Figure 4 for Figure 2 A partial enlarged schematic diagram of part B in the LED lens shown.

[0022] Figure 5 for Figure 1 Schematic diagram of light irradiation of LED lens.

[0023] Figure 6 for Figure 1 Schematic diagram of the light angle of the LED lens shown.

[0024] Figure 7 FIG. 1 is a light distribution diagram of a conventional LED lens in one embodiment.

[0025] Figure 8 FIG. 1 is a diagram showing light trends of a conventional LED lens in an embodiment.

[0026] Figure 9 for Figure 1 Light distribution diagram of the LED lens shown.

[0027] Figure 10 for Figure 1 The light trend diagram of the LED lens shown.

[0028] Reference numerals:

[0029] 1. Mirror body; 11. Mounting bottom surface; 12. Light-emitting curved surface; 121. Concave surface; 13. Step structure; 131. First step; 132. Second step; 14. Light entry slot; 15. Mounting slot;

[0030] 2. Protrusion; 3. Support member; 4. Positioning member. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0033] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0034] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0035] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0036] Please combine Figures 1 to 5 The LED lens provided by the present invention is now described. The LED lens is used in the backlight display screen of a display device. The LED lens includes a lens body 1, one side of which serves as a mounting bottom surface 11, and the other side of which, facing away from the mounting bottom surface 11, serves as an outwardly convex light-emitting curved surface 12. The outer edge of the light-emitting curved surface 12 is provided with a step structure 13, which is used to converge the emitted light toward the front of the light-emitting curved surface 12.

[0037] It can be understood that one side surface of the mirror body 1 of the LED lens is the mounting bottom surface 11, and the other side surface of the mirror body 1 facing away from the mounting bottom surface 11 is a light-emitting curved surface 12 protruding outward, and the outer edge of the light-emitting curved surface 12 is provided with a step structure 13. The step structure 13 is used to converge the emitted light to the front of the light-emitting curved surface 12. By setting the step structure 13, the light emitted through the step structure 13 can enhance the peripheral brightness of the light spot while increasing the light spot, improve the peripheral yellow spot, and improve the light uniformity, thereby improving the use effect.

[0038] It should be added that the outer surface of the mirror body 1 is roughly in the shape of a round cap.

[0039] In this embodiment, the stepped structure 13 includes a first step 131 and a second step 132, which are arranged sequentially in a direction away from the mounting base. This improves the brightness at the periphery of the spot and increases the size of the spot, achieving low optical density (OD) requirements. Furthermore, the light distribution is uniform, while mitigating the yellow spot problem at the periphery of the lens.

[0040] In one embodiment, if Figure 2 and Figure 4 As shown, the LED lens further includes a protrusion 2, which is provided at the center of the light-emitting curved surface 12. By providing the protrusion 2 at the center of the light-emitting curved surface 12, the brightness of the middle portion of the lens can be enhanced, solving the problem of a dark spot in the center.

[0041] In this embodiment, the middle portion of the light emitting curved surface 12 is a concave surface 121 , and a convex portion 2 is provided at the center of the concave surface 121 , thereby solving the problem of dark spots in the middle portion of the light emitting curved surface 12 .

[0042] Furthermore, the protrusion 2 is circular in shape.

[0043] Furthermore, the shape of the protruding point portion is pointed.

[0044] Furthermore, a light entry slot 14 is provided on the side of the lens body 1 facing away from the light-emitting curved surface 12. Light emitted by the LED is emitted from the light entry slot 14 through the light-emitting curved surface 12, and a portion of the light is emitted from the step structure 13. Light emitted by the LED enters the lens body 1 through the light entry slot 14. The light entering the lens body 1 is refracted and then emitted from the light-emitting curved surface 12, thereby forming a light spot on one side of the light-emitting curved surface 12. Part of the light emitted by the LED is refracted from the light entry slot 14 through the step structure 13 before being emitted, thereby improving the uniformity of light distribution and improving the yellow spot problem on the periphery of the lens.

[0045] Furthermore, the concave surface 121 is opposite to the light incident groove 14 , and the central axis of the concave surface 121 coincides with the central axis of the light incident groove 14 , so that the light emitted by the LED can be irradiated from the light incident groove 14 to the concave surface 121 .

[0046] In one embodiment, if Figure 2 As shown, the side of the lens body 1 facing away from the light-emitting curved surface 12 is further provided with a mounting groove 15. Mounting groove 15 is connected to the light-entering groove 14 and is used to mount an LED. The provision of mounting groove 15 enables the LED to be mounted on the lens. Specifically, the LED is bonded to the wall of mounting groove 15.

[0047] In one embodiment, continue as Figure 2 As shown, the LED lens also includes a support member 3, which is mounted on the mounting bottom surface 11. The support member 3 provides support for the lens when mounted externally. Furthermore, the support member 3 also serves a positioning function. By providing a plurality of support grooves corresponding to the support members 3 on the component on which the LED lens is mounted, the support members 3 can be inserted into the support grooves to achieve positioning between the LED lens and the component on which the LED lens is mounted.

[0048] In this embodiment, multiple support members 3 are provided, each of which is spaced apart along the circumference of the mounting base 11. Providing multiple support members 3 improves the stability of the lens support. In practice, there are three support members 3, which are distributed in a circular pattern on the mounting base 11.

[0049] Of course, in other embodiments, the lens may not be provided with the support member 3, and the lens may be directly supported by the lens body 1, which can save costs.

[0050] In one embodiment, if Figure 1 As shown, the LED lens further includes a positioning member 4, which is mounted on the mounting bottom surface 11 and is used for positioning. By providing the positioning member 4, the LED lens can be positioned during the manufacturing process.

[0051] In this embodiment, a plurality of positioning members 4 are provided and spaced apart along the circumferential direction of the mounting bottom surface 11. This can improve the positioning effect and ensure that the circumferential positioning of the mirror body 1 is consistent.

[0052] In one embodiment, if Figure 6 As shown, Figure 6 The vertical coordinate is the distance between the edge of the light spot and the center of the light spot, and its unit is millimeter. The circumferential coordinate is the angle, and its unit is degree. The light spot irradiation range of the LED lens is within 160 degrees.

[0053] In one embodiment, if Figures 7 to 10 As shown, Figure 7 This is the light distribution diagram of the LED lens in the prior art. Figure 9 This is the light distribution diagram of the LED lens of the utility model, from Figure 7 and Figure 9 Compared with the above figure, it can be clearly seen that the brightness of the middle part of the light spot is improved.

[0054] Figure 8 This is a light trend diagram of an LED lens in the prior art. The horizontal axis is the distance between the edge of the light spot and the center of the light spot, and its unit is millimeter. The vertical axis is the amount of light. Figure 10 This is the light trend diagram of the LED lens of this utility model. The horizontal axis is the distance between the edge of the light spot and the center of the light spot, its unit is millimeter, and the vertical axis is the amount of light. Figure 8 and Figure 10 , where the horizontal axis is 0, it represents the number of rays at the center of the spot. Figure 8 The number of rays is 0-20, Figure 10 The number of rays is 80-100, Figure 10 The number of rays in Figure 8 The number of rays is large, which means Figure 10 The brightness of the central light spot is improved to solve the problem of dark spots in the center.

[0055] The utility model also provides a light source module, which includes the LED lens of any one of the above embodiments.

[0056] It can be understood that the light source module of the present invention uses the above-mentioned LED lens, so that one side surface of the lens body 1 of the LED lens is the mounting bottom surface 11, and the other side surface of the lens body 1 facing away from the mounting bottom surface 11 is a light-emitting curved surface 12 protruding outward, and the outer edge of the light-emitting curved surface 12 is provided with a step structure 13. The step structure 13 is used to converge the emitted light to the front of the light-emitting curved surface 12. By setting the step structure 13, the light emitted through the step structure 13 can enhance the peripheral brightness of the light spot while increasing the light spot, improve the peripheral yellow spot, and improve the light uniformity, thereby improving the use effect.

[0057] The utility model further provides a display device, which includes a display screen and the light source module of the above embodiment.

[0058] It can be understood that the light source module of the display device of the present invention uses the above-mentioned LED lens, so that one side surface of the mirror body 1 of the LED lens is the mounting bottom surface 11, and the other side surface of the mirror body 1 facing away from the mounting bottom surface 11 is a light-emitting curved surface 12 protruding outward, and the outer edge of the light-emitting curved surface 12 is provided with a step structure 13. The step structure 13 is used to converge the emitted light to the front of the light-emitting curved surface 12. By setting the step structure 13, the light emitted through the step structure 13 can enhance the peripheral brightness of the light spot while increasing the light spot, improve the peripheral yellow spot, and improve the uniformity of the light, thereby improving the use effect.

[0059] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. An LED lens, characterized in that: The LED lens includes a mirror body, one side surface of the mirror body is a mounting bottom surface, the other side surface of the mirror body away from the mounting bottom surface is a light-emitting curved surface convex outward, and the outer edge of the light-emitting curved surface is provided with a step structure, and the step structure is used to converge the emitted light toward the front of the light-emitting curved surface; The step structure includes a first step and a second step, and the first step and the second step are sequentially arranged in a direction away from the installation bottom surface.

2. The LED lens according to claim 1, characterized in that: The LED lens further includes a protruding portion, and the protruding portion is arranged at the center of the light-emitting curved surface.

3. The LED lens according to claim 2, characterized in that: The middle portion of the light-emitting curved surface is a concave surface, and the convex portion is provided at the center of the concave surface.

4. The LED lens according to claim 3, characterized in that: A light entrance groove is provided on the side of the mirror body away from the light exit curved surface. Light emitted by the LED is emitted from the light entrance groove through the light exit curved surface, and part of the light is emitted from the step structure.

5. The LED lens according to claim 4, characterized in that: The concave surface is opposite to the light incident groove, and the central axis of the concave surface coincides with the central axis of the light incident groove.

6. The LED lens according to claim 4, characterized in that: A mounting groove is further provided on the side of the mirror body away from the light-emitting curved surface. The mounting groove is connected to the light-incident groove and is used to mount the LED.

7. The LED lens according to claim 1, wherein: The LED lens further includes a support member, and the support member is mounted on the mounting bottom surface.

8. A light source module, characterized in that: The light source module includes the LED lens according to any one of claims 1 to 7.

9. A display device, characterized in that: The display device includes a display screen and the light source module according to claim 8.

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