CN214474061U - Backlight lens with high light spot brightness - Google Patents
Backlight lens with high light spot brightness Download PDFInfo
- Publication number
- CN214474061U CN214474061U CN202120373533.XU CN202120373533U CN214474061U CN 214474061 U CN214474061 U CN 214474061U CN 202120373533 U CN202120373533 U CN 202120373533U CN 214474061 U CN214474061 U CN 214474061U
- Authority
- CN
- China
- Prior art keywords
- light
- lens
- transmitting block
- microstructure
- light source
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 6
- 239000011324 bead Substances 0.000 claims description 3
- 230000000994 depressogenic effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000009537 plain noodles Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Images
Abstract
The utility model provides a high bright lens in a poor light of facula, be n including the refracting index1Lens body of, above the lens bodyThe surface is a light-emitting surface, the lower surface of the lens body is provided with a cylindrical light placing cavity, the top of the light placing cavity is provided with a conical depressed groove, the bottom of the depressed groove is provided with a microstructure diverging layer, and the microstructure diverging layer is connected with a lens with the refractive index of n2Light-transmitting block, n2<n1A gap is formed between the light transmitting block and the side wall of the light placing cavity, the bottom of the light transmitting block is connected with a light source, and the optical axis of the light source penetrates through the light emitting surface, the light placing cavity, the limiting groove and the center of the light transmitting block. The utility model discloses can realize effectual even light of dispersing to the light that is located central zone territory that the light source sent, the light trap that sets up on the light source forms the interval with putting between the optical cavity, can supply light to get into the lenticule again to the central refraction of the lenticule earlier to effectively improve the effective zone's of facula luminance, the light energy utilization rate is high.
Description
Technical Field
The utility model relates to a lens in a poor light specifically discloses a lens in a poor light of facula highlight.
Background
The backlight lens is also called TV lens and diffusion lens, and is mainly used for direct type backlight module, and can form a light emitting effect with a certain divergence angle by matching with a single light source.
The backlight lens in the prior art is mainly set to be a plano-convex lens structure, the back face of the lens body is provided with the light placing cavity for accommodating the light source, light emitted by the light source enters the lens body after passing through the light placing cavity and is finally emitted from the front light emitting face, although the light emitting effect with a certain divergence angle can be obtained, partial light emitted by the light source can be refracted to the outside of an effective area of a light spot, and therefore light energy loss which is not negligible is caused.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a backlight lens with high light spot brightness, which can form a good light-homogenizing effect and has sufficient effective area brightness of the light spot.
In order to solve the prior art problem, the utility model discloses a facula highlight's lens in a poor light, be n including the refracting index1The lens body, the upper surface of lens body is for going out the plain noodles, and the lower surface of lens body is equipped with cylindric puts the light chamber, and the top of putting the light chamber is equipped with and is conical depressed groove, and the tank bottom of depressed groove is equipped with the microstructure and diverges the layer, and the microstructure is diverged the layer and is connected with the refracting index and be n down2Light-transmitting block, n2<n1A gap is formed between the light transmitting block and the side wall of the light placing cavity, the bottom of the light transmitting block is connected with a light source, and the optical axis of the light source penetrates through the light emitting surface, the light placing cavity, the limiting groove and the center of the light transmitting block.
Further, the bottom surface of the lens body is covered with a reflective layer.
Further, the light source is an LED lamp bead.
Furthermore, the bottom of the light-transmitting block is provided with a limiting groove, and the light source is arranged in the limiting groove.
Further, the microstructure divergence layer is a sawtooth microstructure.
Furthermore, at least three positioning feet are fixed at the bottom of the lens body.
The utility model has the advantages that: the utility model discloses a lens in a poor light of facula highlight, the micro-structure that sets up through the depressed trench bottom diverges the layer and can realize effectual even light of dispersing to the light that is located central zone that the light source sent, ensures that the central luminance of facula that obtains is even, in addition, the light trap that sets up on the light source with put and form the interval between the optical cavity, the air bed that forms in the interval can supply light to refract to the center of the lens body earlier and get into the lens body again, thereby effectively improve the effective regional luminance of facula, the light energy utilization rate is high.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The reference signs are: the lens comprises a lens body 10, a light-emitting surface 11, a light-placing cavity 12, a concave groove 13, a microstructure divergent layer 131, a reflective layer 14, a light-transmitting block 20, a limiting groove 21, a light source 30 and a positioning pin 40.
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.
The embodiment of the utility model discloses lens in a poor light of facula highlight, be n including the refracting index1The lens body 10, the upper surface of the lens body 10 is an outward convex light-emitting surface 11, preferably, the light-emitting surface 11 is an aspheric structure, the lower surface of the lens body 10 is provided with a cylindrical light-placing cavity 12, the light-placing cavity 12 is concave towards the inside of the lens body 10, the top of the light-placing cavity 12 is provided with a conical concave groove 13, the cross section of the concave groove 13 is an inverted V-shaped groove, the bottom of the concave groove 13 is provided with a microstructure divergent layer 131, and the microstructure divergent layer 131 is connected with the lower part of the microstructure divergent layer 131, wherein the refractive index of the microstructure divergent layer is n2Light-transmitting blocks 20, n2<n1，n2A refractive index greater than that of air, and a light-transmitting blockA gap is formed between the side wall of the light-receiving cavity 20 and the side wall of the light-transmitting block 12, the bottom of the light-transmitting block 20 is connected with the light source 30, that is, the light-emitting surface 11 of the light source 30 is tightly attached to the bottom surface of the light-transmitting block 20, and the optical axis of the light source 30 passes through the center of the light-emitting surface 11, the center of the light-receiving cavity 12, the center of the limiting groove 21 and the center of the light-transmitting block 20.
When the lens is used, light emitted by the light source 30 directly enters the light-transmitting block 20, and the light in the central area is scattered after passing through the microstructure divergent layer 131, enters the lens body 10, and is finally refracted from the light-emitting surface 11 and then emitted; after entering the light-transmitting block 20, the light emitted from the light source 30 in the edge region is refracted upward in the air environment from the side surface to the space, then refracted into the lens body 10 from the cavity wall of the light-receiving cavity 12, and finally refracted and emitted from the light-emitting surface 11. The light emitted by the light source 30 in the central area can be effectively diffused and homogenized, and the light emitted by the light source 30 in the edge area can be adjusted to be close to the effective area of the light spot, so that the energy loss caused by the fact that the light is projected to an ineffective area can be effectively avoided.
In this embodiment, the bottom surface of the lens body 10 is covered with the reflective layer 14, preferably, the reflective layer 14 is a high light aluminum reflective layer 14 or a silver reflective layer 14, and by providing the reflective layer 14, light reflected in the lens body 10 can be effectively prevented from being emitted from the back surface, so that the utilization rate of energy can be effectively improved.
In this embodiment, the light source 30 is an LED lamp bead.
In this embodiment, the bottom of the light-transmitting block 20 is provided with a limiting groove 21, and the light source 30 is installed in the limiting groove 21, that is, the size of the limiting groove 21 is equal to the size of the light source 30, so that the collimation effect of installing the light source 30 can be effectively improved, and the installation and operation are convenient.
In this embodiment, the microstructure diffusing layer 131 is a saw-toothed microstructure, that is, the microstructure diffusing layer 131 is composed of a plurality of small conical microstructures, which can achieve an effective diffusing effect on light, or the microstructure diffusing layer 131 is a frosted layer.
In the present embodiment, at least three positioning legs 40 are fixed to the bottom of the lens body 10, and the positioning legs 40 can improve the stability and convenience of mounting the lens body 10.
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 (5)
1. The backlight lens with high light spot brightness is characterized by comprising a refractive index n1The lens body (10), the upper surface of the lens body (10) is a light-emitting surface (11), the lower surface of the lens body (10) is provided with a cylindrical light placing cavity (12), the top of the light placing cavity (12) is provided with a conical concave groove (13), the bottom of the concave groove (13) is provided with a microstructure diverging layer (131), and the microstructure diverging layer (131) is connected with a refractive index n below the microstructure diverging layer (131)2A light-transmitting block (20), n2<n1The light-transmitting block (20) and the side wall of the light-transmitting cavity (12) are spaced, the bottom of the light-transmitting block (20) is connected with a light source (30), the bottom of the light-transmitting block (20) is provided with a limiting groove (21), the light source (30) is installed in the limiting groove (21), and the optical axis of the light source (30) penetrates through the light-emitting surface (11), the light-transmitting cavity (12), the limiting groove (21) and the center of the light-transmitting block (20).
2. The backlight lens with high spot brightness according to claim 1, wherein the bottom surface of the lens body (10) is covered with a reflective layer.
3. The backlight lens with high light spot brightness according to claim 1, wherein the light source (30) is an LED lamp bead.
4. The backlight lens with high brightness of light spots according to claim 1, wherein the microstructure divergent layer (131) is a sawtooth-shaped microstructure.
5. The backlight lens with high light spot brightness according to claim 1, wherein at least three positioning feet (40) are fixed at the bottom of the lens body (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120373533.XU CN214474061U (en) | 2021-02-10 | 2021-02-10 | Backlight lens with high light spot brightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120373533.XU CN214474061U (en) | 2021-02-10 | 2021-02-10 | Backlight lens with high light spot brightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214474061U true CN214474061U (en) | 2021-10-22 |
Family
ID=78143801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120373533.XU Expired - Fee Related CN214474061U (en) | 2021-02-10 | 2021-02-10 | Backlight lens with high light spot brightness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214474061U (en) |
-
2021
- 2021-02-10 CN CN202120373533.XU patent/CN214474061U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211022 |
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| CF01 | Termination of patent right due to non-payment of annual fee |