CN108627904B - Flat lamp light guide plate mesh point arrangement structure with high light yield - Google Patents
Flat lamp light guide plate mesh point arrangement structure with high light yield Download PDFInfo
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- CN108627904B CN108627904B CN201710158542.5A CN201710158542A CN108627904B CN 108627904 B CN108627904 B CN 108627904B CN 201710158542 A CN201710158542 A CN 201710158542A CN 108627904 B CN108627904 B CN 108627904B
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- guide plate
- light guide
- plate body
- light
- arrangement structure
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- 238000000605 extraction Methods 0.000 claims abstract description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000012827 research and development Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005286 illumination Methods 0.000 abstract description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000010147 laser engraving Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004836 empirical method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention belongs to the technical field of illumination, and particularly relates to a net point arrangement structure of a light guide plate of a flat lamp with high light yield, which comprises a light guide plate body, wherein a pair of oppositely arranged edges of the light guide plate body are provided with light source edges; the dot diameters on the light guide plate body are gradually increased from each light source side to the central line of the light guide plate body according to a growth function, wherein the growth function is Y=K/(1+e (a+bx)). The beneficial effects of the invention are as follows: according to the mesh point design scheme of the growth function, after the two sides of the light guide plate body emit light, the light emitted from the plane opposite to the scattering surface is uniform after being scattered by the mesh points on the scattering surface, so that the maximum light extraction rate is achieved; according to the size of the light guide plate body, the optimal dot arrangement structure can be obtained by the dot spacing between two adjacent dots with a certain value in a shorter time, long-time test is not needed, and the research and development production efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of illumination, and particularly relates to a net point arrangement structure of a light guide plate of a flat lamp with high light yield.
Background
The light guide plate is a key optical device of the flat lamp, and has the function of changing light emitted by a side-emitting light source into straight light relative to the plane of the flat lamp from the side-emitting direction through the guide of the light guide plate and through multiple light changes such as incidence, refraction, reflection, diffuse reflection and the like, so as to illuminate the surrounding environment. Therefore, the working efficiency of the light guide plate is related to the use efficiency of the whole lamp for light. In order to improve the light guide efficiency of the light guide plate, a lattice point is designed on one surface of the light guide plate, and the light direction and intensity can be changed under the influence of the lattice point, so that the possibility is brought for improving the light emitting efficiency of the light guide plate. The traditional network point design scheme improves the light emitting efficiency through repeated test or simulation test according to an empirical method. The conventional light guiding technology has the following disadvantages:
1. Because the artificial test is adopted, from the point of experience, the larger light extraction rate is obtained by changing the size of the dots and the distance between the dots. However, without theoretical guidance, the maximum light extraction scheme cannot be achieved.
2. Because the artificial test is performed manually, the number of times of the test is always limited, and therefore, the optimal network point scheme cannot be obtained in a short time.
3. Many human-tested structures tend to have low light extraction.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a mesh point design scheme according to a growth function, wherein the mesh points on a scattering surface scatter light after two sides of a light guide plate body emit light, so that the maximum light extraction rate is achieved; according to the size of the light guide plate body, the optimal dot arrangement structure can be obtained by the dot spacing of two adjacent dots with a certain value in a shorter time, long-time test is not needed, and the research and development of the panel light guide plate dot arrangement structure with high light yield of production efficiency is improved.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a flat lamp light guide plate mesh point arrangement structure that light yield is big, it includes the light guide plate body, and the edge that a pair of relative settings of light guide plate body all is having the light source limit; the dot diameter on the light guide plate body is gradually increased according to a growth function from each light source side to the central line of the light guide plate body, wherein the growth function is Y=K/(1+e (a+bx)), Y is the dot diameter, K=2.85-2.89, a=0.55-0.56, b= -0.005-0.006, e is a natural constant, and x is the dot sequence number from each light source side to the central line of the light guide plate body.
The two edges of the light guide plate body of the invention emit light, and the light propagation rule in the light guide plate body is as follows: the light is scattered continuously at the lattice point on the propagation path, so that the luminous flux directed toward the symmetrical center line of the light guide plate is gradually attenuated. According to the rule, through the experimental test of a distribution photometer, the invention obtains the dot design scheme combined with the growth function, and the dot diameter on the central line from each light source side to the light guide plate body is gradually increased regularly. Therefore, after the two sides of the light guide plate body emit light, the light emitted from the plane opposite to the scattering surface is uniform after being scattered by the mesh points on the scattering surface, and the light emitting efficiency is maximum.
According to the invention, the optimal dot arrangement structure can be obtained according to the size of the light guide plate body and the spacing between two adjacent dots with a certain value in a shorter time, long-time test is not needed, and the research and development production efficiency is improved.
Specifically, the growth function is y=k/(1+e++bx), where k=2.8862, a=0.558, b= -0.00533, and the total number of dots on the central line from each light source side to the light guide plate body is 155, and then the dot diameters of the starting points on both sides are: 1.054mm, the maximum dot diameter in the middle of the light guide plate: 1.64mm, at which time the light yield measured by the distribution photometer is highest.
Preferably, the center distance between any two adjacent mesh points on the light guide plate body is 1.8-1.9 mm, mesh points with different diameters can be arranged, and the arrangement is convenient.
Preferably, the light guide plate body is an acrylic organic glass plate, a PS plastic plate or an MS plastic plate, so that screen printing or laser engraving of dots is facilitated.
The panel light guide plate mesh point arrangement structure with high light yield has the beneficial effects that:
1. According to the lattice point design scheme of the growth function, after the two sides of the light guide plate body emit light, the light emitted from the plane opposite to the scattering surface is uniform after being scattered by the lattice points on the scattering surface, so that the maximum light extraction rate is achieved;
2. according to the size of the light guide plate body, the optimal dot arrangement structure can be obtained by the dot spacing between two adjacent dots with a certain value in a shorter time, long-time test is not needed, and the research and development production efficiency is improved.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a schematic diagram of a layout structure of a mesh point of a light guide plate of a flat lamp with high light output rate.
Wherein 1, the light source side is provided.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
The embodiment of the invention with large light output rate comprises a light guide plate body, a pair of opposite edges of the light guide plate body are provided with light source edges 1; the dot diameter on the light guide plate body is gradually increased according to a growth function from each light source side 1 to the central line of the light guide plate body, wherein the growth function is Y=K/(1+e (a+bx)), Y is the dot diameter, K=2.85-2.89, a=0.55-0.56, b= -0.005-0.006, e is a natural constant, and x is the dot sequence number on the central line from each light source side 1 to the light guide plate body.
The two edges of the light guide plate body of the embodiment emit light, and the light propagation rule in the light guide plate body is as follows: the light is scattered continuously at the lattice point on the propagation path, so that the luminous flux directed toward the symmetrical center line of the light guide plate is gradually attenuated. According to the rule, through the experimental test of the distribution photometer, the embodiment obtains the dot design scheme combined with the growth function, and the dot diameter on the central line from each light source side 1 to the light guide plate body is regularly and gradually increased. Therefore, after the two sides of the light guide plate body emit light, the light emitted from the plane opposite to the scattering surface is uniform after being scattered by the mesh points on the scattering surface, and the light emitting rate is maximum.
According to the embodiment, the optimal dot arrangement structure can be obtained according to the size of the light guide plate body and the spacing between two adjacent dots with a certain value in a shorter time, long-time test is not needed, and the research and development production efficiency is improved.
Specifically, the growth function is y=k/(1+e++bx), where k=2.8862, a=0.558, b= -0.00533, and the total number of dots on the central line from each light source side 1 to the light guide plate body is 155, and then the dot diameters of the two side starting points are: 1.054mm, the maximum dot diameter in the middle of the light guide plate: 1.64mm, at which time the light yield measured by the distribution photometer is highest.
Preferably, the center distance between any two adjacent mesh points on the light guide plate body is 1.8-1.9 mm, mesh points with different diameters can be arranged, and the arrangement is convenient.
Preferably, the light guide plate body is an acrylic organic glass plate, a PS plastic plate or an MS plastic plate, so that screen printing or laser engraving of dots is facilitated.
It should be understood that the above-described specific embodiments are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications which extend from the spirit of the present invention are within the scope of the present invention.
Claims (2)
1. The utility model provides a dull and stereotyped lamp light guide plate mesh point arrangement structure that light yield is big which characterized in that: the light guide plate comprises a light guide plate body, wherein a pair of oppositely arranged edges of the light guide plate body are provided with light source edges (1); the method comprises the steps that the dot diameter on a light guide plate body is gradually increased according to a growth function from each light source side (1) to the central line of the light guide plate body, wherein the growth function is Y=K/(1+e (a+bx)), Y is the dot diameter, K=2.8862, a=0.558, b= -0.00533, e is a natural constant, x is the dot sequence number on the central line from each light source side (1) to the light guide plate body, the central distance between any two adjacent dots on the light guide plate body is 1.8-1.9 mm, and the dot diameters of two side starting points are: 1.054mm, the maximum dot diameter in the middle of the light guide plate: 1.64mm.
2. The arrangement structure of the mesh points of the light guide plate of the flat lamp with high light extraction rate according to claim 1, which is characterized in that: the light guide plate body is an acrylic organic glass plate, a PS plastic plate or an MS plastic plate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710158542.5A CN108627904B (en) | 2017-03-17 | 2017-03-17 | Flat lamp light guide plate mesh point arrangement structure with high light yield |
| PCT/CN2017/079691 WO2018166006A1 (en) | 2017-03-17 | 2017-04-07 | Dot arrangement structure of light guide plate of panel light having high light exit efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710158542.5A CN108627904B (en) | 2017-03-17 | 2017-03-17 | Flat lamp light guide plate mesh point arrangement structure with high light yield |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108627904A CN108627904A (en) | 2018-10-09 |
| CN108627904B true CN108627904B (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710158542.5A Active CN108627904B (en) | 2017-03-17 | 2017-03-17 | Flat lamp light guide plate mesh point arrangement structure with high light yield |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108627904B (en) |
| WO (1) | WO2018166006A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10481678B2 (en) | 2017-01-11 | 2019-11-19 | Daqri Llc | Interface-based modeling and design of three dimensional spaces using two dimensional representations |
| US11125993B2 (en) | 2018-12-10 | 2021-09-21 | Facebook Technologies, Llc | Optical hyperfocal reflective systems and methods, and augmented reality and/or virtual reality displays incorporating same |
| JP2022514489A (en) | 2018-12-10 | 2022-02-14 | フェイスブック・テクノロジーズ・リミテッド・ライアビリティ・カンパニー | Adaptive viewport for hypervocal viewport (HVP) displays |
| WO2020146683A1 (en) * | 2019-01-09 | 2020-07-16 | Daqri, Llc | Non-uniform sub-pupil reflectors and methods in optical waveguides for ar, hmd and hud applications |
| CN109737326A (en) * | 2019-01-11 | 2019-05-10 | 深圳市海洋王照明工程有限公司 | Plate detects lamp |
| US11863730B2 (en) | 2021-12-07 | 2024-01-02 | Snap Inc. | Optical waveguide combiner systems and methods |
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- 2017-04-07 WO PCT/CN2017/079691 patent/WO2018166006A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108627904A (en) | 2018-10-09 |
| WO2018166006A1 (en) | 2018-09-20 |
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