CN211698258U - Refraction type lens and display device - Google Patents
Refraction type lens and display device Download PDFInfo
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- CN211698258U CN211698258U CN202020618979.XU CN202020618979U CN211698258U CN 211698258 U CN211698258 U CN 211698258U CN 202020618979 U CN202020618979 U CN 202020618979U CN 211698258 U CN211698258 U CN 211698258U
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- 230000007704 transition Effects 0.000 claims abstract description 30
- 235000009537 plain noodles Nutrition 0.000 claims abstract description 8
- 239000011148 porous material Substances 0.000 claims abstract description 4
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 238000005286 illumination Methods 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
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Abstract
The utility model discloses a refraction type lens and display device, including locating the light inlet hole at the bottom surface center of refraction type lens and locating the light-emitting curved surface on the top surface of refraction type lens, the pore wall of light inlet hole is the income plain noodles of light refraction, the bottom surface includes the little structural plane that sets up around the light inlet hole and the transition surface that is used for connecting little structural plane and income plain noodles, the one end that the transition surface links to each other with income plain noodles is sunken to the bottom surface; in the refraction type lens of the utility model, because the transition surface faces the outer side above the refraction type lens, the light reflected from the light-emitting curved surface and returned to the transition surface is reflected, the diffusion angle of the light is increased, the diameter of the light spot on the irradiation surface is larger, and the uniformity of the illumination of the central area of the light spot is improved; meanwhile, the microstructure surface can diffuse and reflect the light reflected by the edge of the light-emitting curved surface, so that the concentrated energy at the periphery of the light spot is weakened, and the yellow ring phenomenon is not easy to form.
Description
Technical Field
The utility model relates to an optical lens field especially relates to a refraction formula lens and display device.
Background
The refraction type lens is widely applied to direct type television backlight liquid crystal display, a plurality of LEDs are adopted to be optically mixed in direct type backlight in the industry at present so as to generate a backlight source with uniform brightness, and the coverage range of a single LED light source in the light source structure is small, so that the number of required LED light sources is large, and the development trend of miniaturization is not met.
The utility model discloses an application number is 201520189534.3's chinese utility model patent discloses an optical lens, but the income unthreaded hole of holding LED light source is seted up at its lens center, it is the income plain noodles of light refraction to go into the unthreaded hole pore wall, the bottom surface of lens body is the light reflection face, the top surface is the light-emitting curved surface of light transmission, go into unthreaded hole light reflection face all around and adopt prism face micro-structural processing, make light take place reflection phenomenon in contacting the light reflection face, reflection light passes through on the final refraction of light-emitting curved surface reachs the sensitive surface again, optical lens in this scheme has improved the angle of emergence and the illuminance homogeneity of single light source in certain extent, the light source size structure miniaturization of being convenient for, the problem that exists in the above-mentioned present trade has been solved betterly.
However, in the patent scheme, the light reflecting surface is of a planar structure, the generated reflected light is more concentrated after being emitted from the light emitting curved surface, and when the lens is used, the diameter of a light spot on the irradiation surface is smaller, and a yellowing diaphragm is easily generated on the periphery of the light spot due to uneven illumination.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a can further enlarge facula diameter and improve the refraction formula lens of illuminance homogeneity and use the display device of this refraction formula lens.
The purpose of the utility model is realized through the following technical scheme:
a refraction type lens comprises a light inlet hole arranged in the center of the bottom surface of the refraction type lens and a light outlet curved surface arranged on the top surface of the refraction type lens, wherein the hole wall of the light inlet hole is a light inlet surface for light refraction;
the bottom surface is including encircleing the little structural plane that goes into the unthreaded hole setting and the transition face that is used for connecting little structural plane and income plain noodles, the one end that the transition face links to each other with the income plain noodles is inside sunken to the bottom surface.
In some preferred embodiments, the transition surface is a cambered surface structure or a beveled surface structure.
In some preferred embodiments, when the transition surface is a cambered surface structure, the cambered profile is concave towards the inner side of the refractive lens.
In some preferred embodiments, the microstructure surface comprises a plurality of microstructures arranged in a circumferential array about the central axis of the refractive lens, each microstructure having an elongated shape with a first end connected to the transition surface and a second end extending to the bottom edge.
In some preferred embodiments, the microstructure has a semicircular cross-sectional profile in any cross-section perpendicular to the direction of extension of the microstructure, and the bottom side of the semicircle is connected to the refractive lens.
In some preferred embodiments, the bottom surface is further provided with a plurality of positioning pillars, and the positioning pillars are uniformly arranged around the light inlet.
In some preferred embodiments, the positioning posts are all disposed in the area of the microstructure surface.
In some preferred embodiments, the microstructured surface is a frosted surface.
In some preferred embodiments, the individual microstructures in the microstructured surface are prismatic, triangular pyramidal, or quadrangular pyramidal.
A display device uses the refractive lens described above.
The utility model has the advantages of it is following:
in the refraction lens of the utility model, the bottom surface comprises a microstructure surface arranged around the light inlet hole and a transition surface for connecting the microstructure surface and the light inlet surface, and one end of the transition surface connected with the light inlet surface is sunken towards the bottom surface; because the transition surface faces the outer side above the refraction type lens, the light reflected from the light-emitting curved surface back to the transition surface is reflected, the diffusion angle of the light is increased, the diameter of a light spot on the irradiation surface is larger, and the illumination uniformity of the central area of the light spot is improved; meanwhile, the microstructure surface can perform divergent reflection on the light reflected by the edge of the light-emitting curved surface, so that the concentrated energy at the periphery of the light spot is weakened, and the yellow ring phenomenon is not easy to form; the utility model discloses a refraction formula lens when improving facula diameter and degree of consistency, can reduce the emergence of the yellow circle phenomenon that the major diameter facula easily produced again, improved the display effect.
Drawings
FIG. 1 is a perspective view of a refractive lens of the present invention;
FIG. 2 is a cross-sectional view of a refractive lens of the present invention;
FIG. 3 is a diagram of the light path of the refractive lens of the present invention;
in the figure: 1. the light source comprises a light inlet hole, 2, a light outlet curved surface, 3, a boss, 4, a positioning column, 5, a bottom surface, 5-1, a reflecting surface, 5-2 and a microstructure surface.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.
The first embodiment is as follows:
as shown in fig. 1 to 3, a refractive lens, which is circular in profile in a top view, structurally comprises: locate the income unthreaded hole 1 at 5 centers in the bottom surface of this refraction formula lens, the pore wall of going into unthreaded hole 1 is the income plain noodles of light refraction, is equipped with light-emitting curved surface 2 on the refraction formula lens top surface, and light-emitting curved surface 2 below is connected with the bottom surface through boss 3 structure.
The bottom surface 5 comprises a micro-structure surface 5-2 arranged around the light inlet 1 and a transition surface 5-1 used for connecting the micro-structure surface 5-2 with the light inlet surface, the purpose of the transition surface 5-1 is to increase the diffusion angle of light reflected to the transition surface 5-1 by the light outlet curved surface 2 after being reflected by the transition surface 5-1, so that one end of the transition surface 5-1 connected with the light inlet surface is recessed towards the bottom surface 5, namely one end of the transition surface 5-1 connected with the micro-structure surface 5-2 is positioned outside the refraction type lens, and one end of the transition surface 5-1 connected with the light inlet surface is recessed towards the inside of the refraction type lens; the transition surface 5-1 can be a cambered surface structure or a bevel surface structure.
In some preferred embodiments, when the transition surface 5-1 is a curved surface structure, the curved surface profile is concave towards one side of the inside of the refractive lens, that is, as shown in fig. 2, an arbitrary plane where the central axis of the refractive lens is located is taken as a cross section, and the cross-sectional profile of the transition surface 5-1 is concave towards one side of the inside of the refractive lens, so that when the light reflected to the transition surface 5-1 is reflected again, the reflected light is divergent, the diffusion angle is larger, and the illuminance at the middle of the light spot on the irradiated surface is more uniform.
It is easy to think that the microstructure surface 5-2 can adopt a frosted surface in the prior art or a single microstructure in the microstructure surface 5-2 is in a prismatic, triangular conical or quadrangular pyramid shape to scatter light reflected to the edge profile of the bottom surface 5, so that the energy concentrated at the periphery of a light spot is weakened, and the yellow ring phenomenon is not easy to form.
As shown in fig. 1, in this embodiment, the microstructure surface 5-2 includes a plurality of microstructures arranged in a circumferential array around a central axis of the refractive lens, each of the microstructures is in a long strip shape, a first end of each of the microstructures is connected to the transition surface 5-1, a second end of each of the microstructures extends to an edge of the bottom surface 5, and when viewed from a single microstructure, on any cross section perpendicular to an extending direction of the microstructure, a cross-sectional profile of each of the microstructures is in a semicircular shape, a size of the cross-sectional profile is gradually reduced from the second end to the first end of each of the microstructures, and a bottom surface of the semicircular microstructure is connected to.
Still be equipped with a plurality of reference columns 4 on the bottom surface 5, a plurality of reference columns 4 encircle and go into unthreaded hole 1 and evenly arrange, a plurality of reference columns 4 all locate the region in 5-2 of microstructural surface to the location installation of refraction formula lens.
Example two:
a display device in which the refractive lens in the above embodiments is mounted.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a refraction formula lens, is including the income unthreaded hole (1) of locating the bottom surface (5) center of refraction formula lens and locate light-emitting curved surface (2) on the top surface of refraction formula lens, and the pore wall of going into unthreaded hole (1) is the income plain noodles of light refraction, its characterized in that:
the bottom surface (5) comprises a micro-structure surface (5-2) arranged around the light inlet hole (1) and a transition surface (5-1) used for connecting the micro-structure surface (5-2) with the light inlet surface, and one end, connected with the light inlet surface, of the transition surface (5-1) is sunken into the bottom surface (5).
2. A refractive lens according to claim 1, wherein: the transition surface (5-1) is of a cambered surface structure or an inclined surface structure.
3. A refractive lens according to claim 2, wherein: when the transition surface (5-1) is of a cambered surface structure, the contour of the cambered surface is sunken towards one side of the interior of the refraction type lens.
4. A refractive lens according to claim 1, 2 or 3, wherein: the microstructure surface (5-2) comprises a plurality of microstructures which are arranged in a circumferential array mode according to the central axis of the refraction type lens, each single microstructure is in a strip shape, the first end of each microstructure is connected with the transition surface (5-1), and the second end of each microstructure extends to the edge of the bottom surface (5).
5. A refractive lens according to claim 4, wherein: on any section perpendicular to the extending direction of the microstructure, the section outline of the microstructure is semicircular, and the bottom edge of the semicircle is connected with the refraction type lens.
6. A refractive lens according to claim 1, 2 or 3, wherein: still be equipped with a plurality of reference columns (4) on bottom surface (5), a plurality of reference columns (4) encircle into unthreaded hole (1) and evenly arrange.
7. A refractive lens according to claim 6, wherein: the positioning columns (4) are arranged in the area where the microstructure surface (5-2) is located.
8. A refractive lens according to claim 1, 2 or 3, wherein: the microstructure surface (5-2) is a frosted surface.
9. A refractive lens according to claim 1, 2 or 3, wherein: the single microstructure in the microstructure surface (5-2) is prismatic, triangular conical or quadrangular pyramid.
10. A display device characterized by comprising a refractive lens according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020618979.XU CN211698258U (en) | 2020-04-22 | 2020-04-22 | Refraction type lens and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020618979.XU CN211698258U (en) | 2020-04-22 | 2020-04-22 | Refraction type lens and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211698258U true CN211698258U (en) | 2020-10-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020618979.XU Expired - Fee Related CN211698258U (en) | 2020-04-22 | 2020-04-22 | Refraction type lens and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211698258U (en) |
-
2020
- 2020-04-22 CN CN202020618979.XU patent/CN211698258U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201016 |
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| CF01 | Termination of patent right due to non-payment of annual fee |