CN106526960A - Directly-down LED backlight lens and LED display device with the same - Google Patents
Directly-down LED backlight lens and LED display device with the same Download PDFInfo
- Publication number
- CN106526960A CN106526960A CN201610882878.1A CN201610882878A CN106526960A CN 106526960 A CN106526960 A CN 106526960A CN 201610882878 A CN201610882878 A CN 201610882878A CN 106526960 A CN106526960 A CN 106526960A
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- CN
- China
- Prior art keywords
- lens
- light
- led backlight
- direct
- face
- 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
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a directly-down LED backlight lens. The directly-down LED backlight lens comprises a bottom face, an emitting-in face and an emitting-out face. The emitting-in face comprises stripy prism stripes, and is gathered upwards at the position, close to the top center of the lens, from the center of the bottom face of the lens; the emitting-out face extends upwards from the bottom face, is gathered to the top of the lens, and is formed by a plurality of non-smooth-transition curved face units. Light rays emitted by light sources in a same cross section are refracted by the emitting-in face to be capable of being distributed on different planes, the light rays passing through the emitting-in face are further subjected to unordered divergence through the curved face units of the emitting-out face, and the problem that the edge color difference of light sources of the lens in the prior art is poor is solved. The invention also discloses an LED display device with the same.
Description
Technical field
The present invention relates to lens technologies field, and in particular to a kind of direct-light type LED backlight lens and including the lens
LED display.
Background technology
Direct-light type LED backlight lens are mainly used in middle large-size liquid crystal television back lighting and general lighting field
Area source such as panel light, lamp affixed to the ceiling etc., its effect mainly expand the lighting angle of LED light source, and by certain sequence
Arrangement, realizes the uniform illumination of target face.As Chinese patent CN200910004478.0 discloses a kind of light-emitting device, area source
Device and display device (referring to Fig. 1-2), install lens (flux control member), the lens by side on the led device
Work surface is comprising entering light and goes out two curved surfaces of light, and the feature with axisymmetry, sees light through entering light from profile
Face and exiting surface produce certain refraction angle, realize the orderly diffusion profile of light.United States Patent (USP) US6598998B2 is then announced
The lens (referring to Fig. 3) of another kind of structure, the lens equally have the function of diffusion light beam, and there is zigzag to tie for its side
Structure, lens also have rotational symmetric feature on the whole.From the point of view of scheme disclosed in above-mentioned two patent, its lens is on the whole all
With the rotational symmetric feature of central shaft, its light path principle is that the involute based on center ideal point light source is designed, in central shaft
Ideal point light source light in plane is according to angle sequence involute diffusion angle；In the horizontal plane direction of vertical center axis, should
The light path of center ideal point light source is also presented horizontal radiation formula, will not intersect between light and light.
And in actual applications, it, with certain size, is not preferable point source that LED component is, such as lens diameter
For 15mm, LED component light-emitting area size reaches 3mm.On the other hand, the light source for straight-down negative lens mostly is white light LED part, this
The emergent light of device is to excite what yellow fluorescent powder was produced by the blue light that LED chip sends.Existing LED component on the market big more
Angle direction colour temperature is low, i.e. the phenomenon of edge jaundice.According to the Edge Ray Theorem of nonimaging opticss, light source emergent light is in Jing
After crossing continuous curve surface refraction or reflecting, the light in light source edge is still distributed in light spot edge, i.e., occur in target face
The aberration problems such as yellow circle, macula lutea.
Although lens arrangement realizes the diffusion of light in light distribution disclosed in above-mentioned two patent, have
Effect solves the problems, such as the aberration such as edge macula lutea, needs chip-scale fluorescent powder coating or fluorescent material precipitator using high request for this
Skill, but require that the precision of equipment is of a relatively high.
The content of the invention
In order to fully meet to light distribution and Difference Control, the demand of rigging error control using on, the present invention is provided
A kind of direct-light type LED backlight lens and the LED display including the lens.
For reaching above-mentioned purpose, the technical solution used in the present invention is as follows：
A kind of direct-light type LED backlight lens, including bottom surface, the plane of incidence and exit facet, it is characterised in that：The incident mask
There is the prism striped of strip, and pinched near the position at lensed tip center upwards from lens base center；The exit facet
Pinching is upwardly extended in lensed tip from bottom surface, the exit facet is made up of the curved face unit of multiple Non-smooth surface transition；Light source sets
The bottom center of lens is placed in, the light in same section that the light source sends can be distributed in after plane of incidence refraction
In different planes, described in Jing, the curved face unit of exit facet is further dissipated the above-mentioned light after the plane of incidence again.From
The light that light source sends can solve light source edge color in prior art after the unordered diverging of the above-mentioned plane of incidence and exit facet
The problems such as difference.
Further, the shape of multiple curved face units can be with identical or differ.
Further, the bottom surface of the lens has raised optical texture, for scattered portion veiling glare.
Further, the raised optical texture includes being arranged at the pericentral coniform salient point of lens base, sets
The conoid type salient point for being placed in the coniform salient point periphery and the prismatic striped for being arranged at the conoid type salient point periphery.It is aobvious
So, those skilled in the art can be arranged as required to the concrete form of above-mentioned optical texture, however it is not limited to which above-mentioned is coniform convex
Point, conoid type salient point and prismatic striped.
Further, the bottom surface of the lens is provided with several assembling foot positions.The concrete form of the assembling foot position and
Quantity is that those skilled in the art can be determined as needed.
Further, the bottom surface of the lens is provided with the breach of several assembly directions, and the breach can be noted as lens
Molded glue-feeder.
Further, the lens are made using injection molding process, and the material of the lens is optics plastic material.Institute
State optics plastic material and include but is not limited to PMMA, PC, COC etc..
Present invention also offers a kind of LED display, including the lens installed in the LED component back side, wherein, described
Mirror is any of the above-described kind of direct-light type LED backlight lens.
Rotational symmetry structure of the prior art is different from, LED-backlit lens disclosed in this invention can be adopted on the whole
Rotation asymmetry structure, such as on the whole can the structure in Jellyfish shape.
As a result of above-mentioned technical proposal, the present invention achieves beneficial technique effect：The light that light source sends is passed through
After the lens of above-mentioned special construction carry out the unordered diffusion of two-stage, realize under the premise of illuminance uniformity is ensured, avoid producing color
Poor technique effect.The optical texture of the projection arranged by lens bottom, can effective scattered portion veiling glare, further avoid
The problem of aberration is produced, and mechanical assembly and injection manufacture can be easy in lens base setting assembling foot position and breach.
Description of the drawings
Fig. 1 is a kind of LED-backlit lens schematic diagram of prior art；
Fig. 2 is the index path of LED-backlit lens in Fig. 1；
Fig. 3 is another kind of LED-backlit lens schematic diagram in prior art；
Fig. 4 is the major optical structural representation of LED-backlit lens disclosed by the invention；
Fig. 5 is the plane of incidence structural representation of LED-backlit lens disclosed by the invention；
Fig. 6 is the bottom surface projection optical texture schematic diagram of LED-backlit lens disclosed by the invention；
Fig. 7 is the mechanical assembly structure schematic diagram of LED-backlit lens disclosed by the invention；
Fig. 8 is the index path of LED-backlit lens disclosed by the invention；
Fig. 9 is LED display schematic diagram disclosed by the invention；
Figure 10 is the lens arrangement schematic diagram of LED display disclosed by the invention；
Figure 11 is the Illumination Distribution figure of single LEDs in target board of LED display disclosed by the invention；
Figure 12 is the aberration scattergram of single LEDs in target board of LED display disclosed by the invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, with reference to embodiments to the present invention
It is further elaborated, but the scope of protection of present invention is not limited to following specific embodiments.
As illustrated in figures 4-5, LED-backlit lens disclosed by the invention include bottom surface 3, the plane of incidence 2 and exit facet 1, it is described enter
Prism striped of the face 2 with strip is penetrated, which is pinched near the position at lensed tip center upwards from 3 center of lens base；Institute
State exit facet 1 pinching is upwardly extended in lensed tip, curved face unit of the exit facet 1 by multiple Non-smooth surface transition from bottom surface 3
Constitute；Light source is arranged at 3 center of bottom surface of lens, and the light in same section that the light source sends is through the plane of incidence 2
Refrangible makes light carry out unordered diffusion in different planes afterwards；The outgoing described in Jing again of the above-mentioned light after the plane of incidence 2
The curved face unit in face 1 carries out further unordered diverging.There is angle between emergent ray, such as the angle can be between 5 ° to 15 °.
Further, it is as shown in fig. 6, the bottom surface 3 of the lens is provided with the optical texture of projection, miscellaneous for scattering fraction
Light.Further, the raised optical texture includes being arranged at the pericentral coniform salient point 6 of lens base, is arranged at
The conoid type salient point 7 of the coniform salient point periphery and it is arranged at the prismatic striped 8 of the conoid type salient point periphery.Obviously,
Those skilled in the art can be arranged as required to the concrete form of above-mentioned optical texture, however it is not limited to above-mentioned coniform salient point,
Conoid type salient point and prismatic striped.
Further, as shown in fig. 7, the lens also include necessary mechanical assembly structure, the bottom surface 3 of lens is provided with
The assembling foot position 4 of three roundings, it is clear that the concrete form of the assembling foot position and quantity are also that those skilled in the art can root
It is adjusted according to needs.The bottom surface 3 of the lens is additionally provided with the breach 5 of assembly direction, and the breach 5 can be molded as lens
The glue-feeder of molding.The lens are made using plastic-injection moulding process, and the material of lens is the modeling of the optics such as PMMA, PC, COC
Glue material.
As shown in figure 8, light 9 and light 10 are sent by central point, wherein two beams on same center shaft section
Emergent ray.Due to light 9 and 10 wavelength of light it is different, through the plane of incidence 2 reflect after, the no longer coplanar propagation of two light,
But antarafacial is propagated in three dimensions.After exit facet 1 is reflected, two antarafacial light are in three dimensions into certain
Angle, angle are 5 ° -15 °.After the refraction of two discontinuity surfaces, the orderly coplanar light in two dimensional surface becomes originally
Unordered antarafacial light in three dimensions so that the light in the light source edge no longer orderly edge for being distributed in hot spot,
But be dispersed in hot spot, efficiently solve the aberration problem such as macula lutea.
The invention also discloses a kind of LED display including said lens, as shown in figs. 9-10, the lens are installed
In the top of LED component, and array arrangement is formed, realize that uniform colorless difference illuminates target board.As depicted in figs. 11-12, this
Bright disclosed LED display is realized on the premise of illuminance uniformity is ensured, it is to avoid produce the technique effect of aberration.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is changed.Therefore, specific embodiment disclosed and described above is the invention is not limited in, to invention
A little modifications and changes should also be as falling in the scope of the claims of the present invention.Although additionally, used in this specification
Some specific terms, but these terms are merely for convenience of description, do not constitute any restriction to invention.
Claims (8)
1. a kind of direct-light type LED backlight lens, including bottom surface, the plane of incidence and exit facet, it is characterised in that：The plane of incidence has
The prism striped of strip, and pinched near the position at lensed tip center upwards from lens base center；The exit facet from
Bottom surface upwardly extends pinching in lensed tip, and the exit facet is made up of the curved face unit of multiple Non-smooth surface transition；Light source sends
Same section in light through the plane of incidence refraction after can be distributed on a different plane, it is above-mentioned after the plane of incidence
Described in Jing, the curved face unit of exit facet is further dissipated light again.
2. direct-light type LED backlight lens according to claim 1, it is characterised in that between multiple curved face units
Shape is identical or differs.
3. direct-light type LED backlight lens according to claim 1, it is characterised in that the bottom surface of the lens has projection
Optical texture, for scattered portion veiling glare.
4. direct-light type LED backlight lens according to claim 3, it is characterised in that the raised optical texture includes
The pericentral coniform salient point of lens base is arranged at, the conoid type salient point of the coniform salient point periphery is arranged at and is set
It is placed in the prismatic striped of the conoid type salient point periphery.
5. direct-light type LED backlight lens according to claim 1, it is characterised in that if the bottom surface of the lens is provided with
Dry assembling foot position.
6. direct-light type LED backlight lens according to claim 1, it is characterised in that if the bottom surface of the lens is provided with
The breach of dry assembly direction, the breach can be used as the glue-feeder of lens injection mo(u)lding.
7. direct-light type LED backlight lens according to claim 1, it is characterised in that the lens adopt injection mo(u)lding work
Skill is made, and the material of the lens is optics plastic material.
8. a kind of LED display, including the lens installed in the LED back sides, it is characterised in that the lens are claim 1-
Direct-light type LED backlight lens described in 7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882878.1A CN106526960A (en) | 2016-10-08 | 2016-10-08 | Directly-down LED backlight lens and LED display device with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882878.1A CN106526960A (en) | 2016-10-08 | 2016-10-08 | Directly-down LED backlight lens and LED display device with the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106526960A true CN106526960A (en) | 2017-03-22 |
Family
ID=58331697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610882878.1A Pending CN106526960A (en) | 2016-10-08 | 2016-10-08 | Directly-down LED backlight lens and LED display device with the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106526960A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471297A (en) * | 2018-08-21 | 2019-03-15 | 深圳明智超精密科技有限公司 | A kind of ultrathin backlight source lens |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009193902A (en) * | 2008-02-18 | 2009-08-27 | Stanley Electric Co Ltd | Illuminating device, signboard illuminating device, and direct backlight for liquid panel |
| CN204477930U (en) * | 2015-02-14 | 2015-07-15 | 成都恒坤光电科技有限公司 | There is direct-light type LED backlight illumination light-distribution lens and the system of positioner |
| CN204946894U (en) * | 2015-08-12 | 2016-01-06 | 深圳市旭晟实业有限公司 | A kind of large chip LED encapsulation structure with free optical surface lens |
| CN105333395A (en) * | 2014-06-19 | 2016-02-17 | 苏州东山精密制造股份有限公司 | LED lens and LED light source comprising same |
| CN105650596A (en) * | 2014-06-28 | 2016-06-08 | 深圳创维－Rgb电子有限公司 | Optical element diffusing light |
-
2016
- 2016-10-08 CN CN201610882878.1A patent/CN106526960A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009193902A (en) * | 2008-02-18 | 2009-08-27 | Stanley Electric Co Ltd | Illuminating device, signboard illuminating device, and direct backlight for liquid panel |
| CN105333395A (en) * | 2014-06-19 | 2016-02-17 | 苏州东山精密制造股份有限公司 | LED lens and LED light source comprising same |
| CN105650596A (en) * | 2014-06-28 | 2016-06-08 | 深圳创维－Rgb电子有限公司 | Optical element diffusing light |
| CN204477930U (en) * | 2015-02-14 | 2015-07-15 | 成都恒坤光电科技有限公司 | There is direct-light type LED backlight illumination light-distribution lens and the system of positioner |
| CN204946894U (en) * | 2015-08-12 | 2016-01-06 | 深圳市旭晟实业有限公司 | A kind of large chip LED encapsulation structure with free optical surface lens |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471297A (en) * | 2018-08-21 | 2019-03-15 | 深圳明智超精密科技有限公司 | A kind of ultrathin backlight source lens |
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Application publication date: 20170322 |
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