CN217506248U - Optical lens for improving light uniformity of light-emitting surface - Google Patents
Optical lens for improving light uniformity of light-emitting surface Download PDFInfo
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- CN217506248U CN217506248U CN202220697560.7U CN202220697560U CN217506248U CN 217506248 U CN217506248 U CN 217506248U CN 202220697560 U CN202220697560 U CN 202220697560U CN 217506248 U CN217506248 U CN 217506248U
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Abstract
The utility model provides an improve optical lens who goes out plain noodles light homogeneity, including first lens, second lens, first lens with connect through optical cement between the second lens, first lens has first income plain noodles, first play plain noodles, first income plain noodles is the convex surface, the middle part of first income plain noodles is formed with by to the first fretwork groove that goes into plain noodles one side sunken, the second lens is located fretwork inslot side, the second lens have by to the second of first income plain noodles one side goes into the plain noodles, by to the second of first play plain noodles one side goes out the plain noodles, is formed at the third play plain noodles that the second lens is followed outward, the refracting index of first lens is w1, the refracting index of optical cement is w2, the refracting index of second lens is w3, satisfies the following condition: w1 < w2 < w 3. The utility model discloses an optical lens piece can solve traditional optical lens piece and go out the uneven problem of plain noodles light distribution.
Description
Technical Field
The utility model relates to an optical lens piece technical field, concretely relates to improve optical lens piece of play plain noodles light homogeneity.
Background
Optical lenses are often used in imaging lenses, lighting devices, and the like. For the optical lens applied in the lighting device, a light source is usually adopted, the light source is arranged on one side of the light incident surface of the optical lens, and the light emitted by the light source is concentrated near the optical axis, so that the light is more in the middle of the light emergent surface of the optical lens, and the light is not uniformly distributed.
SUMMERY OF THE UTILITY MODEL
To above problem, the utility model provides an improve optical lens who goes out plain noodles light homogeneity can solve traditional optical lens and go out the problem that plain noodles light distributes unevenly.
In order to achieve the above purpose, the utility model discloses a following technical scheme solves:
the utility model provides an improve optical lens of going out plain noodles light homogeneity, includes first lens, second lens, first lens with connect through optical cement between the second lens, first lens has first income plain noodles, first play plain noodles, first income plain noodles is the convex surface, the middle part of first income plain noodles is formed with by leaning on the sunken fretwork groove in first income plain noodles one side, the second lens is located the fretwork inslot side, the second lens have by to the second income plain noodles of first income plain noodles one side, by to the second play plain noodles in first play plain noodles one side, form in the third play plain noodles that the second lens is outer along, the refracting index of first lens is w1, the refracting index of optical cement is w2, the refracting index of second lens is w3, satisfies the following condition: w1 < w2 < w 3.
Specifically, the hollow-out groove is of a round table-shaped structure.
Specifically, the first light emitting surface is a plane.
Specifically, the second light incident surface is a concave surface.
Specifically, a micro-lens array is arranged on the second light-emitting surface.
The utility model has the advantages that:
the utility model discloses an optical lens piece is provided with the fretwork groove in first income plain noodles one side of first lens, passes through optical cement with the second lens and connects in the fretwork inslot side to first lens, optical cement, the second lens have different refracting indexes, the light that gathers near the optical axis that the light source launches loops through and second lens, optical cement, first lens reextraction, can reach the effect that improves this part light angle of emergence, thereby guarantee that optical lens piece goes out plain noodles light distribution even.
Drawings
Fig. 1 is a schematic sectional view of an optical lens of the present invention.
Fig. 2 is a light path diagram of the optical lens of the present invention after being combined with a light source.
The reference signs are: the lens comprises a first lens 1, a first light incident surface 11, a first light emergent surface 12, a second lens 2, a second light incident surface 21, a second light emergent surface 22, a third light emergent surface 23, a micro-lens array 221, optical cement 3 and a light source 4.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
As shown in fig. 1-2:
an optical lens for improving light uniformity of a light-emitting surface comprises a first lens 1 and a second lens 2, wherein the first lens 1 is connected with the second lens 2 through an optical adhesive 3, the first lens 1 is provided with a first light-emitting surface 11 and a first light-emitting surface 12, the first light-emitting surface 11 is a convex surface, a hollow groove which is recessed towards one side of the first light-emitting surface 11 is formed in the middle of the first light-emitting surface 11, the second lens 2 is positioned inside the hollow groove, the second lens 2 is provided with a second light-emitting surface 21 which is recessed towards one side of the first light-emitting surface 11, a second light-emitting surface 22 which is adjacent to one side of the first light-emitting surface 12 and a third light-emitting surface 23 which is formed at the outer edge of the second lens 2, the refractive index of the first lens 1 is w1, the refractive index of the optical adhesive 3 is w2, and the refractive index of the second lens 2 is w3, and meets the following conditions: w1 < w2 < w3, the light source 4 is disposed under the second light incident surface 21, the light beam emitted by the light source 4 and condensed near the optical axis enters the second lens 2 through the second light incident surface 21, the light beam passes through the second light incident surface 21 to be dimmed, and then exits from the second light emitting surface 22 or the third light emitting surface 23 to enter the optical cement 3, because the refractive indexes of the second lens 2 and the optical cement 3 are different, the light beam is refracted when passing through the two interfaces, and the light beam enters the first lens 1 after being refracted, because the refractive indexes of the first lens 1 and the optical cement 3 are different, the light beam is refracted when passing through the two interfaces, and the light emergent angle can be changed to a greater extent through multiple refractions, so as to achieve the effect of improving the uniformity of the light beam of the first light incident surface 11.
Preferably, the hollow-out groove is in a round table-shaped structure.
Preferably, the first light emitting surface 12 is a plane.
Preferably, in order to prevent the outgoing light from being condensed in the middle of the first light emitting surface 12, the microlens array 221 is disposed on the second light emitting surface 22, and the microlens array 221 has an emitting effect on the light.
The above examples only represent 1 embodiment of the present invention, and the description thereof is more specific and detailed, but not 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. An optical lens for improving light uniformity of a light emergent surface comprises a first lens (1) and a second lens (2), wherein the first lens (1) is connected with the second lens (2) through an optical adhesive (3), and is characterized in that the first lens (1) is provided with a first light incident surface (11) and a first light emergent surface (12), the first light incident surface (11) is a convex surface, a hollow groove which is concave towards one side of the first light incident surface (11) is formed in the middle of the first light incident surface (11), the second lens (2) is positioned inside the hollow groove, the second lens (2) is provided with a second light incident surface (21) which is concave towards one side of the first light incident surface (11), a second light emergent surface (22) which is concave towards one side of the first light emergent surface (12), and a third light emergent surface (23) which is formed on the outer edge of the second lens (2), the refractive index of the first lens (1) is w1, the refractive index of the optical cement (3) is w2, and the refractive index of the second lens (2) is w3, and the following conditions are met: w1 < w2 < w 3.
2. The optical lens of claim 1, wherein the hollow-out groove has a truncated cone-shaped structure.
3. The optical lens of claim 1, wherein the first light-emitting surface (12) is a plane.
4. The optical lens for improving light uniformity of a light emitting surface according to claim 1, wherein the second light incident surface (21) is a concave surface.
5. The optical lens of claim 1, wherein the second light emitting surface (22) is provided with a micro lens array (221).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220697560.7U CN217506248U (en) | 2022-03-28 | 2022-03-28 | Optical lens for improving light uniformity of light-emitting surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220697560.7U CN217506248U (en) | 2022-03-28 | 2022-03-28 | Optical lens for improving light uniformity of light-emitting surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217506248U true CN217506248U (en) | 2022-09-27 |
Family
ID=83347487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220697560.7U Active CN217506248U (en) | 2022-03-28 | 2022-03-28 | Optical lens for improving light uniformity of light-emitting surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217506248U (en) |
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2022
- 2022-03-28 CN CN202220697560.7U patent/CN217506248U/en active Active
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