CN213988069U - High-brightness backlight lens - Google Patents
High-brightness backlight lens Download PDFInfo
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- CN213988069U CN213988069U CN202023039271.8U CN202023039271U CN213988069U CN 213988069 U CN213988069 U CN 213988069U CN 202023039271 U CN202023039271 U CN 202023039271U CN 213988069 U CN213988069 U CN 213988069U
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Abstract
The utility model provides a high-brightness backlight lens, which comprises a lens body, wherein the bottom of the lens body is provided with a light placing cavity, the inner wall of the light placing cavity is a light incoming surface, the top of the lens body is a light outgoing surface, a light source is arranged in the light placing cavity, the center of the light outgoing surface is provided with an arc-shaped concave part, the arc-shaped concave part is filled with a light adjusting glue layer, the top of the light adjusting glue layer is provided with a plurality of embossing concave parts, and the light refractive index of the light adjusting glue layer is smaller than that of the lens body; an inner-carved light modulation layer is arranged in the lens body, the inner-carved light modulation layer surrounds the light placing cavity to form a circular truncated cone side face, an included angle alpha is formed between the conical surface of the inner-carved light modulation layer and the optical axis of the light source, and the inner-carved light modulation layer is composed of a plurality of laser inner-carved points which are uniformly distributed. The utility model can effectively adjust the light to be emitted into the effective light distribution area, the brightness of the effective light distribution area is sufficient, and the utilization rate of the light energy is high; the light-adjusting glue layer structure with the stamping concave part can further accumulate and distribute light rays in the central area.
Description
Technical Field
The utility model relates to a lens in a poor light specifically discloses a lens in a poor light of hi-lite type.
Background
The backlight lens has the capability of refracting and diffusing light around, is also called as a diffusion lens and a TV lens, and one backlight lens is usually used corresponding to a single LED chip. The combination of a plurality of backlight lenses and a light source can form a surface light emitting effect, and can be applied to direct type display devices, such as computer screens, liquid crystal televisions and the like.
The backlight lens in the prior art is made of glass or acrylic, a light placing cavity is arranged at the bottom of the backlight lens, a convex light emitting surface structure is arranged at the top of the backlight lens, light emitted by a light source sequentially passes through the light placing cavity, the backlight lens and a light emitting surface and is finally diverged and expanded to be emitted all around, although a light emitting effect with a large enough area can be formed, part of the light is emitted in a direction with a large included angle with an optical axis, and the part of the light finally reaches the outside of an effective area of light distribution, so that non-negligible energy waste is caused, and the brightness of the effective area of the light distribution is insufficient.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a high-brightness backlight lens for effectively adjusting the light to be emitted into an effective light distribution area, so that the utilization rate of light energy is high and the brightness of the effective light distribution area is sufficient.
In order to solve the prior art problem, the utility model discloses a high-brightness backlight lens, which comprises a lens body, wherein the bottom of the lens body is provided with a light placing cavity, the inner wall of the light placing cavity is a light incoming surface, the top of the lens body is a light outgoing surface, a light source is arranged in the light placing cavity, the center of the light outgoing surface is provided with an arc-shaped concave part, the arc-shaped concave part is filled with a light adjusting glue layer, the top of the light adjusting glue layer is provided with a plurality of stamping concave parts, and the light refractive index of the light adjusting glue layer is smaller than that;
an inner-carved light modulation layer is arranged in the lens body, the inner-carved light modulation layer surrounds the light placing cavity to form a circular truncated cone side face, an included angle alpha is formed between the conical surface of the inner-carved light modulation layer and the optical axis of the light source, the alpha is more than or equal to 30 degrees and less than or equal to 60 degrees, and the inner-carved light modulation layer is composed of a plurality of laser inner-carved points which are uniformly distributed.
Further, the embossing depression is in the shape of an inverted cone.
Furthermore, the bottom surface of the lens body is covered with a diffuse reflection structure layer, and the light cavity penetrates through the diffuse reflection structure layer.
Furthermore, the bottom of the diffuse reflection structure layer is covered with a specular reflection layer, and the light cavity penetrates through the specular reflection layer.
Furthermore, the diffuse reflection structure layer is a frosted layer, and the specular reflection layer is a silver plating layer or an aluminum plating layer.
Furthermore, an annular heat-conducting silica gel seat is fixed at the bottom of the lens body in a surrounding manner.
The utility model has the advantages that: the utility model discloses a high-brightness backlight lens, which is provided with a special inner-carved light modulation layer and can effectively modulate light to emit to one side close to a light source light axis, thereby effectively modulating the light to emit to an effective light distribution area, the brightness of the effective light distribution area is sufficient, the utilization rate of light energy is high, and the energy loss is low; in addition, the light-adjusting glue layer structure with the coining depressed part is arranged, light rays in the central area can be further accumulated and distributed, the brightness in the central area is ensured to be uniform and sufficient, the structure of the whole backlight lens is simple, and the formed light-emitting light spots are high in brightness and uniform in brightness.
Drawings
Fig. 1 is a perspective schematic view of the present invention.
Fig. 2 is a schematic top view of the present invention.
Fig. 3 is a schematic cross-sectional view along a-a' in fig. 2.
The reference signs are: the lens comprises a lens body 10, a light placing cavity 11, a light incoming surface 111, a light outgoing surface 12, an arc-shaped concave part 13, a light adjusting glue layer 14, a stamping concave part 141, a diffuse reflection structure layer 15, a mirror reflection layer 16, a heat conduction silica gel seat 17, a light source 20, an inner carving light adjusting layer 30 and a laser inner carving point 31.
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 to 3.
The embodiment of the utility model discloses a highlight type backlight lens, including the lens body 10 of plano-convex type, the bottom center department of lens body 10 is equipped with puts optical cavity 11, it is the cavity structure sunken to the lens body 10 center to put optical cavity 11, the inner wall of putting optical cavity 11 is into plain noodles 111, it is the aspheric surface structure that has negative focal power to go into plain noodles 111, the top of lens body 10 is out the plain noodles 12, it is the aspheric surface structure that has positive focal power to go out plain noodles 12, it is equipped with light source 20 in the optical cavity 11 to put, the optical axis of light source 20 passes the center of going into plain noodles 111 and out plain noodles 12, preferably, light source 20 is LED lamp pearl, the center department of going out plain noodles 12 is equipped with arc depressed part 13, arc depressed part 13 is obtained by the logarithm curve that the base number is greater than 1 around the y-axis rotation, namely arc depressed part 13 is the curved surface that curvature radius constantly increases around from the center, the top of the light-adjusting adhesive layer 14 is provided with a plurality of uniformly distributed embossed concave parts 141, the light-adjusting adhesive layer 14 covers behind the arc-shaped concave part 13, and the embossed concave parts 141 are manufactured on the light-adjusting adhesive layer 14 in an embossing mode, so that the processing operation is convenient, the light refractive index of the light-adjusting adhesive layer 14 is smaller than that of the lens body 10, and light can be ensured to be refracted to exit to two sides when reaching the arc-shaped concave part 13, thereby effectively ensuring the light diffusion effect;
an inner-carved light modulation layer 30 is arranged in the lens body 10, the inner-carved light modulation layer 30 surrounds the periphery of the light-placing cavity 11 to form an inverted circular truncated cone side surface, namely, the top of the cone of the inner-carved light modulation layer 30 is positioned below the light-placing cavity 11 when the inner-carved light modulation layer 30 forms a conical surface, the top of the conical surface of the inner-carved light modulation layer 30 is cut off by the light-placing cavity 11 to form the inverted circular truncated cone side surface, the inner-carved light modulation layer 30 has an accumulation effect on light reflection and refraction, and has good total reflection performance under a specific angle, so that light deviating from the optical axis of the light source 20 can be reflected to be emitted near the center at the inner-carved light modulation layer 30, an included angle alpha is formed between the conical surface of the inner-carved light modulation layer 30 and the optical axis of the light source 20, the alpha is more than or equal to 60 degrees and preferably, the alpha is equal to 60 degrees, so that the light can be emitted near the optical axis while the light can be prevented from being excessively concentrated to form a bright and dark boundary, the inner-carved light modulation layer 30 is composed of a plurality of laser inner-carved points 31 which are uniformly distributed, the laser inner carving point 31 is a hollow spherical cavity, and the laser inner carving point 31 is processed in a laser inner carving mode.
The utility model discloses possess good light diffusion performance, overall structure's luminous luminance is even, can reduce the final direction outgoing with the great angle of skew optical axis of light simultaneously, and the effective area luminance of grading is sufficient, the high-usage of light energy. When the light source 20 works, light rays emitted from the light incident surface 111 enter the lens body 10, the light incident surface 111 refracts and diffuses the light rays to the periphery, part of the light rays are refracted to the laser inner carving points 31, the light rays reaching the laser inner carving points 31 at an incident angle larger than a total reflection angle are totally reflected to the light emitting surface 12 to be emitted, and the part of the light rays are reflected to an optical axis close to the light source 20, so that the utilization rate of light energy can be effectively improved, and the brightness of a final light spot effective area is effectively improved; the light reaching the laser inner carving point 31 by the incidence angle which does not meet the total reflection angle is refracted and then possibly refracted or reflected again, so that the light energy can be effectively accumulated, and the brightness of the final emergent light is effectively improved. Light is refracted and gets into light control adhesive layer 14 when arriving arc depressed part 13, and light is refracted and/or reflect when arriving impression depressed part 141 of light control adhesive layer 14, and the light through multiple reflection can be effectively accumulated to effectively improve ultimate luminous luminance, the luminous homogeneity can effectively be improved to the light that finally refracts from impression depressed part 141 and send.
In the embodiment, the embossed depression 141 has an inverted conical shape, and can effectively refract and/or reflect light reaching the position, so as to effectively improve the dispersion and accumulation effects of light energy.
In this embodiment, the bottom surface of the lens body 10 is covered with the diffuse reflection structure layer 15, the light cavity 11 penetrates through the diffuse reflection structure layer 15, the collection effect of light energy can be effectively improved through the diffuse reflection structure layer 15, and meanwhile, the utilization rate of the light energy can be effectively improved.
Based on the above embodiment, the bottom of the diffuse reflection structure layer 15 is covered with the specular reflection layer 16, the light cavity 11 penetrates through the specular reflection layer 16, and light rays which are not effectively reflected by the diffuse reflection structure layer 15 can be effectively collected through the specular reflection layer 16, so that the utilization rate of light energy is further improved.
Based on the above embodiment, the diffuse reflection structure layer 15 is a frosted layer, and the specular reflection layer 16 is a silver plating layer or an aluminum plating layer.
In this embodiment, the bottom of the lens body 10 is surrounded and fixed with an annular heat-conducting silica gel seat 17, preferably, the heat-conducting silica gel seat 17 is the heat-conducting silica gel seat 17, the heat dissipation performance of the whole backlight lens structure can be effectively improved through the heat-conducting silica gel seat 17, and when the lens is installed on a PCB, the space between the bottom of the lens body 10 and the PCB can be effectively sealed, so that a good sealing effect is formed, and the influence of corrosive gas entering the light-placing cavity 11 on the performance of the light source 20 can be effectively avoided.
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 (6)
1. A high-brightness backlight lens comprises a lens body (10), wherein a light placing cavity (11) is arranged at the bottom of the lens body (10), the inner wall of the light placing cavity (11) is a light incoming surface (111), the top of the lens body (10) is a light outgoing surface (12), and a light source (20) is arranged in the light placing cavity (11), and the high-brightness backlight lens is characterized in that an arc-shaped concave part (13) is arranged at the center of the light outgoing surface (12), a light adjusting glue layer (14) is filled on the arc-shaped concave part (13), a plurality of stamping concave parts (141) are arranged at the top of the light adjusting glue layer (14), and the light refractive index of the light adjusting glue layer (14) is smaller than that of the lens body (10);
an inner-carved light modulation layer (30) is arranged in the lens body (10), the inner-carved light modulation layer (30) surrounds the light placing cavity (11) to form a circular truncated cone side face, an included angle alpha is formed between the conical surface of the inner-carved light modulation layer (30) and the optical axis of the light source (20), the alpha is larger than or equal to 30 degrees and smaller than or equal to 60 degrees, and the inner-carved light modulation layer (30) is composed of a plurality of laser inner-carved points (31) which are uniformly distributed.
2. The backlight lens of claim 1, wherein the embossed depression (141) is in the shape of an inverted cone.
3. A high brightness type backlight lens according to claim 1, wherein the bottom surface of the lens body (10) is covered with a diffuse reflection structure layer (15), and the light receiving cavity (11) penetrates through the diffuse reflection structure layer (15).
4. A high brightness type backlight lens according to claim 3, wherein the bottom of the diffuse reflection structure layer (15) is covered with a specular reflection layer (16), and the light receiving cavity (11) penetrates through the specular reflection layer (16).
5. The lens of claim 4, wherein the diffuse reflection structure layer (15) is a frosted layer, and the specular reflection layer (16) is a silver-plated layer or an aluminum-plated layer.
6. The lens of claim 1, wherein the bottom of the lens body (10) is surrounded and fixed with a ring-shaped heat-conducting silica gel seat (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023039271.8U CN213988069U (en) | 2020-12-16 | 2020-12-16 | High-brightness backlight lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023039271.8U CN213988069U (en) | 2020-12-16 | 2020-12-16 | High-brightness backlight lens |
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| CN213988069U true CN213988069U (en) | 2021-08-17 |
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| CN202023039271.8U Active CN213988069U (en) | 2020-12-16 | 2020-12-16 | High-brightness backlight lens |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113805383A (en) * | 2021-08-27 | 2021-12-17 | 广东烨嘉光电科技股份有限公司 | Fidelity type backlight system for wide color gamut display and light distribution method thereof |
| CN113820764A (en) * | 2021-08-27 | 2021-12-21 | 广东烨嘉光电科技股份有限公司 | Preparation method of direct type backlight lens |
| CN113934058A (en) * | 2021-10-29 | 2022-01-14 | 深圳创维－Rgb电子有限公司 | Optical assembly, backlight module and display device |
-
2020
- 2020-12-16 CN CN202023039271.8U patent/CN213988069U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113805383A (en) * | 2021-08-27 | 2021-12-17 | 广东烨嘉光电科技股份有限公司 | Fidelity type backlight system for wide color gamut display and light distribution method thereof |
| CN113820764A (en) * | 2021-08-27 | 2021-12-21 | 广东烨嘉光电科技股份有限公司 | Preparation method of direct type backlight lens |
| CN113934058A (en) * | 2021-10-29 | 2022-01-14 | 深圳创维－Rgb电子有限公司 | Optical assembly, backlight module and display device |
| WO2023070922A1 (en) * | 2021-10-29 | 2023-05-04 | 深圳创维－Rgb电子有限公司 | Optical assembly, backlight module and display device |
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