CN107678084A - A kind of large area light guide plate - Google Patents
A kind of large area light guide plate Download PDFInfo
- Publication number
- CN107678084A CN107678084A CN201710417225.0A CN201710417225A CN107678084A CN 107678084 A CN107678084 A CN 107678084A CN 201710417225 A CN201710417225 A CN 201710417225A CN 107678084 A CN107678084 A CN 107678084A
- Authority
- CN
- China
- Prior art keywords
- light
- guide plate
- light guide
- incidence
- exiting
- Prior art date
- 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.)
- Pending
Links
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
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0018—Redirecting means on the surface of the light guide
-
- 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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The present invention provides a kind of light guide plate suitable for large area light emitting.The light guide plate contains two incidence surfaces, an exiting surface, two reflectings surface.Two incidence surfaces are vertical with exiting surface, and two reflectings surface respectively form acute angle with two incidence surfaces, also form acute angle with exiting surface, two exiting surfaces intersect and form obtuse angle.Two incidence surfaces are respectively equipped with two incident projections, and protruding apex forms sunk part, spot light or line source can be placed in into sunk part again.Light can be so injected into light guide plate in a manner of more polymerizeing, more light is entered in light guide plate, improve the utilization rate increase brightness of light.Reflecting surface forms acute angle with the plane of incidence simultaneously can make the light of vertical injection light guide plate reflex to exiting surface from reflecting surface.
Description
Technical field
The present invention relates to a kind of light guide plate suitable for large area light emitting.
Background technology
With the progress of economy and technology, requirement more and more higher of the people for light source, traditional spot light is all the more not
Can meet the needs of people.Now, guide-lighting plate technique arises at the historic moment, and light guide plate (lightguideplate) is to utilize optical grade
Acrylic/PC plate material, then with high reflectivity and not hitech materials of extinction, in the acryl plates of optical grade
Bottom surface stamps light guiding points with UV screen printing technologies.The light issued from lamp is drawn in optical grade using optical grade acryl plates
The stop on acryl plates surface, when light is mapped to each light guiding points, reflected light can spread toward all angles, then destroy anti-
Condition is penetrated to be projected by light guide plate front.By various densitys, light guiding points not of uniform size, light guide plate uniformly light-emitting can be made.Reflection
The purposes of piece is reflected back in light guide plate in the light for exposing bottom surface, for improving the service efficiency of light；With homalographic luminance
In the case of degree, luminous efficiency is high, low in energy consumption.But when needing to use large area light guide plate, with the increase of area, light
It is not easy to reflex to the position away from incidence surface, causes the luminance-reduction of the position away from the plane of incidence on light guide plate, makes monoblock guide-lighting
The brightness disproportionation of plate.
The content of the invention
For the drawbacks described above of prior art, problem to be solved by this invention is to provide a kind of suitable for large area light emitting
Light guide plate.
In order to solve the above problems, the present invention has done further improvement to light guide plate.Increase an incident light source, simultaneously
Increase an incidence surface, and reflecting surface is respectively formed acute angle with the plane of incidence, exiting surface.So cause the light perpendicular to the plane of incidence
And other light little with its deviation angle can be totally reflected by reflecting surface, and then projected from exiting surface, improve effect
Rate.
As further improvement of these options, two projections are provided with two planes of incidence of light guide plate, projection
Top is provided with sunk part again, and light source is placed in the sunk part, and light can be made more and what is polymerize is injected into light guide plate.
Brief description of the drawings
Fig. 1 is the drawing in side sectional elevation of the first embodiment of light guide plate of the present invention.
Fig. 2 is the drawing in side sectional elevation of second of embodiment of light guide plate of the present invention.
Fig. 3 is the horizontal part sectioned view of light guide plate shown in Fig. 2.
Embodiment
It is described in further detail below in conjunction with the accompanying drawings with embodiments of the present invention：
As Fig. 1 indicate the present invention the first embodiment, of the present invention is a kind of large area light guide plate, should
Light guide plate has incidence surface 1, the plane of incidence 9, reflecting surface 2, reflecting surface 8, exiting surface 3.Incidence surface 1 is vertical with exiting surface 3, reflecting surface
2 intersect at an acute angle with incidence surface 1, and reflecting surface 2 is also at an acute angle with exiting surface 3, and reflecting surface 2 and reflecting surface 8 intersect obtuse angle.This is anti-
The reason for smooth surface is arranged such is can to reduce incidence angle of the light in reflective surface, and then reduces light afterwards in exiting surface
Incidence angle so that should partly continue total reflection light can be refracted to outside light guide plate, so as to improve the utilization of light
Efficiency.
As Fig. 2 indicate the present invention a kind of preferred embodiment, increase by two projections respectively on two planes of incidence,
Two sunk parts 4 are respectively equipped with again in projection, light source is placed in sunk part 4.Light enters guide-lighting through the incidence surface 7 that is recessed
In plate, most of light can't be refracted to reflective surface 2 or exiting surface 3 immediately, and a part of light is touching light guide plate surface 5
When can be totally reflected, light is remained in light guide plate and propagated, this makes it possible to the utilization for improving light source
Rate, increase the brightness of light guide plate, some light will not be made to have just enter into light guide plate and gone out in its marginal refractive or at all just because anti-
Penetrate and cannot be introduced into light guide plate.
The present invention is not limited to above-mentioned embodiment, every to utilize no matter doing any change in its shape or structure
Set bossing to increase the amount of incident of light in smooth surface and preserving light makes it not reflect away immediately, be all the one of the present invention
Kind deformation, is considered as it within protection scope of the present invention.
Claims (2)
1. a kind of large area light guide plate, contains incidence surface, reflecting surface, exiting surface, it is characterised in that：Containing two incidence surfaces, two
Individual reflecting surface, and two incidence surfaces are vertical with exiting surface, two reflectings surface intersect with the plane of incidence and form acute angle, and two are anti-
Penetrate the extension in face and exiting surface is crossed to form acute angle, two reflectings surface are also crossed to form obtuse angle.
A kind of 2. large area light guide plate according to claim 1, it is characterised in that：Two incidence surfaces further respectively have incident convex
Rise, protruding apex forms sunk part again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710417225.0A CN107678084A (en) | 2017-06-06 | 2017-06-06 | A kind of large area light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710417225.0A CN107678084A (en) | 2017-06-06 | 2017-06-06 | A kind of large area light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107678084A true CN107678084A (en) | 2018-02-09 |
Family
ID=61134150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710417225.0A Pending CN107678084A (en) | 2017-06-06 | 2017-06-06 | A kind of large area light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107678084A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581575A (en) * | 2018-11-12 | 2019-04-05 | 安徽亦知企业管理有限公司 | A kind of light guide plate and preparation method thereof |
-
2017
- 2017-06-06 CN CN201710417225.0A patent/CN107678084A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581575A (en) * | 2018-11-12 | 2019-04-05 | 安徽亦知企业管理有限公司 | A kind of light guide plate and preparation method thereof |
| CN111175882A (en) * | 2018-11-12 | 2020-05-19 | 安徽亦知企业管理有限公司 | Light guide plate |
| CN111208599A (en) * | 2018-11-12 | 2020-05-29 | 安徽亦知企业管理有限公司 | Light guide plate with V type groove |
| CN109581575B (en) * | 2018-11-12 | 2020-11-27 | 佛山市南海精置塑料有限公司 | Light guide plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180209 |
|
| WD01 | Invention patent application deemed withdrawn after publication |