CN106200120B - A kind of light beam adjustment element, luminescence component and backlight module - Google Patents

A kind of light beam adjustment element, luminescence component and backlight module Download PDF

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Publication number
CN106200120B
CN106200120B CN201610640584.8A CN201610640584A CN106200120B CN 106200120 B CN106200120 B CN 106200120B CN 201610640584 A CN201610640584 A CN 201610640584A CN 106200120 B CN106200120 B CN 106200120B
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Prior art keywords
light beam
light
revolving body
adjustment element
beam adjustment
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CN106200120A (en
Inventor
邵坤
李晓平
宋志成
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Hisense Visual Technology Co Ltd
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Qingdao Hisense Electronics Co Ltd
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    • 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
    • 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
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity

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  • Physics & Mathematics (AREA)
  • Nonlinear 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 present invention relates to field of display technology more particularly to a kind of light beam adjustment elements, luminescence component and backlight module, to improve the uniformity of hot spot brightness and increase hot spot, to effectively improve the brightness uniformity of backlight module.Light beam adjustment element provided by the invention is revolving body, the top of the revolving body has the special-shaped conical surface for concaving towards bottom surface, the abnormity conical surface includes by the subapical protrusion surface of revolution and far from the recess surface of revolution on vertex, and the light that light source injects revolving body projects after the special-shaped conical surface total reflection from the side of revolving body.

Description

A kind of light beam adjustment element, luminescence component and backlight module
The application is entitled " a kind of light beam adjustment element, luminescence component and the back proposed on 01 28th, 2014 The divisional application of the Chinese invention patent application 201410041827.7 of optical mode group ".
Technical field
The present invention relates to field of display technology more particularly to a kind of light beam adjustment elements, luminescence component and backlight module.
Background technique
Currently, the backlight module of liquid crystal display device generallys use LED (light-emitting diode, light-emitting diodes Pipe, abbreviation LED) it is used as light source, according to the distributing position of light source, backlight module can be divided into side entering type and two kinds of straight-down negative.
The distribution of light sources of down straight aphototropism mode set is on the backboard of backlight module, and the key light axis direction of light source is perpendicular to backlight The light-emitting surface of mould group, the light that LED point light source projects form multiple hot spots in the light-emitting surface of backlight module, weigh each other between hot spot It is folded to form a piece of complete light-emitting surface, and then illuminate the display area of display device.
However, defect of the existing technology is that LED belongs to point light source, this makes the intermediate region of each hot spot bright Degree is high, and peripheral region brightness is low, even if adjacent spots can be improved hot spot peripheral region the peripheral region of hot spot is overlapped Brightness, but the uniformity of hot spot brightness eventually is poor, and then leads to the brightness irregularities of down straight aphototropism mode set.
Summary of the invention
The embodiment of the present invention provides a kind of light beam adjustment element, luminescence component and backlight module, to improve hot spot brightness Uniformity and increase hot spot, to effectively improve the brightness uniformity of backlight module.
To achieve the above object, light beam adjustment element provided in an embodiment of the present invention is revolving body, the top of the revolving body Portion has the special-shaped conical surface for concaving towards bottom, and the abnormity conical surface includes by the subapical protrusion surface of revolution and far from the recess on vertex The surface of revolution；The light that light source injects revolving body projects after the special-shaped conical surface total reflection from the side of revolving body.
The embodiment of the present invention also provides a kind of luminescence component, including light beam tune described in light source and preceding solution Whole element, the light source are set to the lower section of the rotating shaft of the light beam adjustment element.
The embodiment of the present invention also provides a kind of backlight module, including luminescence component described in preceding solution.
The top of the light beam adjustment element of the embodiment of the present invention is used by the subapical protrusion surface of revolution and far from vertex Be recessed the surface of revolution combine the special-shaped conical surface, when light source directive revolving body the lesser light of incident angle (i.e. light source project lean on The light of nearly key light axis direction) the directive protrusion surface of revolution when side of total reflection directive revolving body and the side from revolving body occurs It projects；When the incident angle of the light of light source directive revolving body is gradually increased (the i.e. light of the separate key light axis direction of light source injection Line) when, the design for the surface of revolution that is recessed, enable to enter revolving body inside light directive recess the surface of revolution incident angle by It is decrescence small, enable directive recess the surface of revolution light occur be totally reflected directive revolving body side and can be from revolving body Side is projected, and the biggish light of incident angle for being effectively prevented light source directive revolving body is all-trans from top when being incident upon side, The side of revolving body cannot reflect and occur there is a situation where total reflection, and thereby, it is possible to make full use of light source to inject revolution The incident ray in internal portion, and since light is by side all outgoing of revolving body, i.e., the light of more energy is to far from light The direction of the primary optical axis in source is projected, and is effectively increased hot spot, is expanded the spread scope of light energy, while reducing in hot spot Between region brightness so that the hot spot brightness on light-emitting surface is more uniform, and then improve the brightness uniformity of backlight module, thus Improve the display quality of product.
Detailed description of the invention
Fig. 1 is the schematic perspective view of light beam adjustment element provided in an embodiment of the present invention；
Fig. 2 is the longitudinal cross-section structural schematic diagram for the light beam adjustment element that first embodiment of the invention provides；
Fig. 3 is the longitudinal cross-section structural schematic diagram for the light beam adjustment element that second embodiment of the invention provides；
Fig. 4 is the schematic view of the front view for the light beam adjustment element that third embodiment of the invention provides；
Fig. 5 is the longitudinal cross-section structure partial schematic diagram for the light beam adjustment element that fourth embodiment of the invention provides；
Fig. 6 is the longitudinal cross-section structure partial schematic diagram for the light beam adjustment element that fifth embodiment of the invention provides；
Fig. 7 is the corresponding light path schematic diagram of light beam adjustment element that fifth embodiment of the invention provides；
Fig. 8 is the optical path emulation schematic diagram that the light beam adjustment element that second embodiment of the invention provides adjusts light beam of light source；
Fig. 9 is the local optical path emulation amplification that the light beam adjustment element that second embodiment of the invention provides adjusts light beam of light source Schematic diagram；
Figure 10 is the optical path emulation schematic diagram that the light beam adjustment element that third embodiment of the invention provides adjusts light beam of light source；
Figure 11 is that the local optical path emulation for the light beam adjustment element adjustment light beam of light source that third embodiment of the invention provides is put Big schematic diagram；
In an exit plane after the light beam for the light beam adjustment element adjustment light source that Figure 12 provides for second embodiment of the invention On illuminance emulate distribution schematic diagram；
In an exit plane after the light beam for the light beam adjustment element adjustment light source that Figure 13 provides for third embodiment of the invention On illuminance emulate distribution schematic diagram.
Appended drawing reference:
10- abnormity conical surface 101- recess surface of revolution 102- protrudes the surface of revolution
The side the 11- bottom surface 12- 13- coaxial rotating protrusion
Cell wall under cell wall 142- on 14-V shape slot 141-
15- light source
Specific embodiment
In order to improve the uniformity of hot spot brightness and increase hot spot, the embodiment of the invention provides a kind of light beam adjustment members Part, luminescence component and backlight module.In the inventive solutions, the special-shaped conical surface at top can be by the directive abnormity conical surface Light, which is all-trans, is incident upon side outgoing, projects so as to be effectively prevented light from the top of light beam adjustment element, suitably drops The brightness of low hot spot intermediate region increases hot spot, so that the hot spot brightness on light-emitting surface is more uniform, and then improves backlight module Brightness uniformity.In order to make the object, technical solutions and advantages of the present invention clearer, below with non-limiting embodiment For invention is further described in detail.
Shown in referring to Figures 1 and 2, Fig. 1 is that the stereochemical structure for the light beam adjustment element that first embodiment of the invention provides is shown It is intended to；Fig. 2 is the longitudinal cross-section structural schematic diagram for the light beam adjustment element that first embodiment of the invention provides, the embodiment of the present invention A kind of light beam adjustment element is provided, light beam adjustment element is revolving body, and the top of revolving body has the abnormity cone for concaving towards bottom Face 10, the special-shaped conical surface 10 include by the subapical protrusion surface of revolution 102 and far from the recess surface of revolution 101 on vertex, and light source 15 is penetrated The light for entering revolving body projects after the total reflection of the special-shaped conical surface 10 from the side of revolving body 11.
As shown in Fig. 2, LED to be placed in the revolution of light beam adjustment element provided by the above embodiment by taking point light source LED as an example The lower section of axis, the light (shown in the straight line with the arrow in Fig. 2) that LED is projected are incident to different by the bottom surface 12 of light beam adjustment element The shape conical surface 10, then be all-trans by the special-shaped conical surface 10 and be incident upon the side 11 of light beam adjustment element, and projected from side 11.
Compared to the prior art, when (what i.e. light source projected leans on the lesser light of incident angle of 15 directive revolving body of light source The light of nearly key light axis direction) the directive protrusion surface of revolution 102 when the side 11 of total reflection directive revolving body occurs and from revolving body Side 11 project；When the incident angle of the light of 15 directive revolving body of light source is gradually increased, the recess surface of revolution 101 is set Meter can be gradually reduced the incident angle into the light directive recess surface of revolution 101 inside revolving body, so that directive is recessed back The light for turning face 101 can occur to be totally reflected the side 11 of directive revolving body and can project from the side of revolving body 11, effectively Ground prevent light source directive revolving body the biggish light of incident angle (i.e. light source project separate key light axis direction light) into The inside for entering revolving body is all-trans from top when being incident upon side, in the feelings that total reflection occurs for the side of revolving body and cannot reflect Condition occurs, thereby, it is possible to make full use of light source to inject the incident ray inside revolving body, and since light is by the side of revolving body Face is all emitted, i.e., the light of more energy is projected to the direction of the primary optical axis far from light source, effectively increases hot spot, is expanded The spread scope of light energy, while the brightness of hot spot intermediate region is reduced, so that apart from the closer light-emitting surface of light source On hot spot brightness it is more uniform, and then improve backlight module brightness uniformity；
Also, referring to shown in Fig. 2, Fig. 8, Fig. 9 and Figure 12, wherein Fig. 8 is the light beam tune that second embodiment of the invention provides The optical path of whole element adjustment light beam of light source emulates schematic diagram, and Fig. 9 is the light beam adjustment element tune that second embodiment of the invention provides The local optical path of whole light beam of light source emulates enlarged diagram, and Figure 12 is the light beam adjustment element tune that second embodiment of the invention provides Illuminance after the light beam of whole light source on an exit plane emulates distribution schematic diagram, the light beam adjustment element which provides So that the luminous energy on the exit plane vertical with the optical axis of light source is with the distance between exit plane and light beam adjustment element at anti- Than that is, the luminous energy on the closer exit plane of light beam adjustment element is higher, and light beam adjustment element will enter its inside Light is projected from the side of light beam adjustment element 11, i.e., the light of more energy is projected to the direction of the primary optical axis far from light source, Therefore it can effectively increase hot spot, while improve the illuminance of the hot spot on the closer light-emitting surface of light source, and then improve and produce The display quality of product.
Meanwhile the light beam adjustment element that various embodiments of the present invention provide uses a kind of material one-pass molding, it can be effectively Simplify production technology, reduces production cost.
There are many specific constructive forms of the special-shaped conical surface, is not particularly limited herein, such as shown in Fig. 2, the special-shaped conical surface 10 include the recess surface of revolution 101 by the subapical protrusion surface of revolution 102 and separate vertex, i.e., the longitudinal section of the special-shaped conical surface 10 Side is S-shaped, and the angle positioned at the tangent line and rotating shaft at any point on subapical protrusion part of S-shaped side is δ, Angle δ increases with the point far from vertex；Tangent line at any point on the depressed section on the separate vertex of S-shaped side Angle with rotating shaft is ε, and angle ε reduces with the point far from vertex, also, protrudes point of the surface of revolution and the surface of revolution that is recessed The angle of the reflection light and rotating shaft at any point (inflection point of i.e. S-shaped side) in boundary line meets following relationship:
Wherein, η is the reflection light and rotating shaft at any point on the line of demarcation for protrude the surface of revolution and the surface of revolution that is recessed Angle, α be revolving body side and rotating shaft angle, n1For the refractive index of light beam adjustment element working environment, n2For light beam The refractive index of adjustment element material, and n2>n1。
According to above-mentioned formula it is found that the light on the line of demarcation of the directive protrusion surface of revolution and the surface of revolution that is recessed at any point is sent out Raw total reflection, and the angle of the reflection light and rotating shaft meets+90 ° of-arcsin (n of relational expression η=α1/n2), so that the reflection The angle of the normal direction of the side of light and revolving body is equal to the critical angle when side is totally reflected, from the foregoing, it can be seen that δ > δ max > ε, δ max is the angle of the tangent line and rotating shaft at the inflection point of S-shaped side, when the close key light axis direction that light source projects Light directive protrude the surface of revolution when occur total reflection directive revolving body side and from the side of revolving body project；When light source is penetrated When the inside of the light directive revolving body of separate key light axis direction out, the design for the surface of revolution that is recessed, angle ε is separate with the point Vertex and reduce, enable to enter revolving body inside light directive recess the surface of revolution incident angle be gradually reduced so that The side for being totally reflected directive revolving body can occur for the light of the directive recess surface of revolution, and the angle of reflection light and rotating shaft is small Critical angle when being totally reflected in side can be projected from the light that the recess surface of revolution reflects from the side of revolving body, Thereby, it is possible to make full use of light source to inject the incident ray inside revolving body, and since light is whole by the side of revolving body Outgoing.
Certainly, above-described embodiment is a kind of present invention preferably embodiment, certainly, the protrusion surface of revolution and the recess surface of revolution Line of demarcation on any point (inflection point of i.e. S-shaped side) at reflection light and the angle of rotating shaft can also meet relationship Formula :+90 ° of-arcsin (n of η < α1/n2)。
In various embodiments of the present invention, the side of revolving body and the angle α of rotating shaft are not specifically limited, with specific reference to light The application of beam adjustment element and installation method determine.
Further, referring to fig. 3, as the second preferred embodiment of the present invention, the bottom of revolving body has same Axis revolution protrusion 13, coaxial rotating protrusion 13 can be by the light of light source directive coaxial rotating protrusion to the primary optical axis side of light source To deviation, there is certain spotlight effect, so that the lesser top of the area light ready to receive protruded out into from coaxial rotating, To reduce the volume of light beam adjustment element, so that the assembling layout of backlight module is relatively simple.The class of coaxial rotating protrusion 13 There are many types, can play spotlight effect, for example, coaxial rotating protrusion 13 can be cone cell protrusion or ball bumps.
In above-described embodiment, the radius for the section circle that coaxial rotating protrusion intersects with the bottom surface of revolving body is unlimited, in order to The radius of enough uniformities for further improving hot spot, the section circle that coaxial rotating protrusion intersects with the bottom surface of revolving body is not less than light Distance of the source to the bottom surface of revolving bodyTimes, for example, when the round radius in the section that coaxial rotating protrusion intersects with bottom surface is not small Distance in the bottom surface of light source to revolving bodyTimes when so that (i.e. main with the strongest radiation direction of energy of the injection of light source Optical axis direction) high-energy light of the angle less than 60 ° it is incident from coaxial rotating protrusion, the angle with the key light axis direction of light source Low-energy light greater than 60 ° is incident from the bottom surface that revolving body removes coaxial rotating protrusion, so that high-energy light is through coaxial rotating It is all-trans after the raised directive abnormity conical surface and is incident upon side injection, to effectively improve the uniformity of hot spot.
Certainly, low-energy light is relative concept, and the light intensity that low-energy light typically refers to point light source injection is lower than 0.9ImaxLight, ImaxFor the highest light intensity of energy that point light source projects, when point light source is Lambertian light source, then low energy It measures the light intensity that light gives directions light source to project and is lower than 0.5ImaxLight.In the present embodiment, low-energy light refers to and light The angle of the key light axis direction in source is greater than 60 ° of light.
As shown in figure 4, on the basis of previous embodiment, the 3rd embodiment of light beam adjustment element provided by the invention In, the side 11 of revolving body has the multi-turn V-shaped groove 14 inside recessed revolving body, and multi-turn V-shaped groove is specifically set to revolving body Between a loop wire on the cross section of bottom surface 12 and side 11, the position of the loop wire meets following relationship:
n1Sin β=n2·sinγ
It is available by above-mentioned formula,
Wherein, γ is the reverse extending line of the line between the point B on loop wire and the point A of section circle on same longitudinal section Angle (the ∠ BO as shown in Figure 6 intersected with rotating shaft1D), β is the line and rotating shaft of any point A and light source O of section circle Angle (∠ AOD as shown in Figure 6), n1For the refractive index of light beam adjustment element working environment, n2For light beam adjustment element material Refractive index, and n2> n1；
Due to multi-turn V-shaped groove be specifically set to a loop wire on the bottom surface 12 of revolving body and the cross section of side 11 it Between, it follows that the position of any point on the overhead pulley profile of multi-turn V-shaped groove meets following relationship:
Wherein, σ be point on the overhead pulley profile of the multi-turn V-shaped groove of same longitudinal section and section circle point it Between line the angle (∠ EFD as shown in Figure 6) that intersects with rotating shaft of reverse extending line；
And the angle of the upper cell wall 141 of V-shaped groove 14 and rotating shaft meets following relationship:
The acute angle of the upper cell wall 141 of V-shaped groove 14 and lower cell wall 142 meets following relationship:
Wherein,For angle (the ∠ CO as shown in Figure 6 of upper cell wall and rotating shaft2D), θ is the sharp of upper cell wall and lower cell wall Angle angle.
Referring to Fig.1 shown in 0, Figure 11 and Figure 13, wherein Figure 10 is the light beam adjustment element that third embodiment of the invention provides The optical path for adjusting light beam of light source emulates schematic diagram；Figure 11 is that the light beam adjustment element that third embodiment of the invention provides adjusts light source The local optical path of light beam emulates enlarged diagram；Figure 13 is that the light beam adjustment element that third embodiment of the invention provides adjusts light source Light beam after illuminance on an exit plane emulate distribution schematic diagram, the low-energy light that light source projects is (with the arrow in Fig. 6 Shown in straight line) occur to be totally reflected supreme cell wall by the lower cell wall 142 that the bottom surface 11 of revolving body enters the simultaneously directive V-shaped groove 14 141, light is further increased compared to shown in Figure 12 and Figure 13 to the direction deviation far from primary optical axis by upper cell wall 141 Spot, the higher region of illuminance significantly increase, that is, improve the utilization rate of light source low-energy light.
Above-mentioned 3rd embodiment is the preferable embodiment of the present invention, and certainly, V-shaped groove can also protrude revolving body and set It sets, i.e., fourth embodiment as shown in Figure 5, the side 11 of revolving body has the multi-turn V-shaped groove 14 of protrusion revolving body, multi-turn V-arrangement The position of any point on the overhead pulley profile of slot, the lower cell wall of V-shaped groove and the angle of rotating shaft, the upper cell wall of V-shaped groove is under The acute angle of cell wall is consistent with the relational expression met in aforementioned third embodiment respectively.
More preferably, on the basis of 3rd embodiment, in Fig. 6 and fifth embodiment of the invention shown in Fig. 7, each V-arrangement The upper cell wall 141 of slot is gradually increased from top to bottom with the angle of rotating shaft, the upper cell wall 141 of each V-shaped groove and lower cell wall 142 Acute angle is gradually increased from top to bottom.The low-energy light for enabling to more light sources to project using this programme is by revolution The bottom surface of body enters and the lower cell wall of the directive V-shaped groove occurs to be totally reflected supreme cell wall, by upper cell wall to far from primary optical axis Direction deviation, further increases hot spot, to improve the utilization rate to light source low-energy light.
Certainly, above-mentioned implementation embodiment is a kind of present invention preferably embodiment, for example, it is also possible to the embodiment party realized Formula includes: that the upper cell wall 141 of each V-shaped groove is gradually increased from top to bottom with the angle of rotating shaft, alternatively, each V-shaped groove is upper Cell wall 141 and the acute angle of lower cell wall 142 are gradually increased from top to bottom.
Multi-turn V-shaped groove connects indention in the above-described embodiments.It is more when multi-turn V-shaped groove is set to the side of revolving body The V-shaped groove of more multi-turn can be arranged in circle V-shaped groove connection indention within the scope of the same light-emitting surface of side, can further increase Large spot improves the display quality of product.The tooth top of multi-turn V-shaped groove has chamfering or rounded corner, after chamfering or round corner treatment V-shaped groove upper cell wall 80% of width not less than the width of upper cell wall before processing, the V-shaped groove after chamfering or round corner treatment Lower cell wall 80% of width not less than the width for handling front lower cell wall.Chamfering or the structure of rounded corner can be effectively reduced The difficulty of processing of light beam adjustment element, to reduce the production cost of product.
The light beam adjustment element provided in based on the above embodiment, the embodiment of the invention also provides a kind of luminescence component, Light beam adjustment element including light source and aforementioned any embodiment, light source are set under the rotating shaft of light beam adjustment element Side.Since the luminescence component uses the light beam adjustment element in above-described embodiment, so the beneficial effect of the luminescence component is asked With reference to above-described embodiment.
The embodiment of the invention also provides a kind of backlight module, the luminescence component including previous embodiment.Compared to existing The special-shaped conical surface of technology, the top of the light beam adjustment element in the present embodiment can be effectively prevented light from light beam adjustment element Top project and be emitted directly toward the light-emitting surface of backlight module, suitably reduce the brightness of hot spot intermediate region；And light beam adjusts Element will enter its internal light and project from the side of light beam adjustment element, i.e. master of the light of more energy to separate light source The direction of optical axis is projected, and hot spot is effectively increased, so that the hot spot brightness on light-emitting surface is more uniform, and then improves backlight mould The brightness uniformity of group, to improve the display quality of product.
Obviously, those skilled in the art can carry out various changes and deformation without departing from essence of the invention to the present invention Mind and range.In this way, if these modification and variation of the invention belong to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to encompass including these changes and deformation.

Claims (9)

1. a kind of light beam adjustment element, which is characterized in that the light beam adjustment element is revolving body, and the top of the revolving body has There is the special-shaped conical surface for concaving towards bottom, the abnormity conical surface includes turning round by the subapical protrusion surface of revolution with the recess far from vertex The longitudinal section in face, the abnormity conical surface is S-shaped；The bottom of the revolving body has coaxial rotating protrusion, and the coaxial rotating is convex Rise includes cone cell protrusion or ball bumps, the radius for the section circle that the coaxial rotating protrusion intersects with the bottom surface of the revolving body Not less than the distance of light source to the bottom surface of the revolving bodyTimes.
2. light beam adjustment element according to claim 1, which is characterized in that positioned at the special-shaped conical surface by subapical The angle of the tangent line and rotating shaft at any point on protrusion part is δ, and angle δ increases with the point far from vertex；It is located at The angle of the tangent line and rotating shaft at any point on the depressed section on the separate vertex of the abnormity conical surface is ε, angle ε with The point reduces far from vertex.
3. light beam adjustment element according to claim 1, which is characterized in that the protrusion surface of revolution and the surface of revolution that is recessed The angle of the rotating shaft of the reflection light and the revolving body at any point on line of demarcation meets following relationship:
Wherein, η is the reflection light at any point on the line of demarcation for protrude the surface of revolution and the surface of revolution that is recessed and the rotating shaft Angle, α be the revolving body side and the rotating shaft angle, n1For the refraction of light beam adjustment element working environment Rate, n2For the refractive index of light beam adjustment element material, and n2> n1。
4. light beam adjustment element according to claim 1, which is characterized in that the side of the revolving body has recessed described Multi-turn V-shaped groove inside revolving body, alternatively, the side of the revolving body has the multi-turn V-shaped groove for protruding the revolving body,
Wherein, the position of any point on the overhead pulley profile of the multi-turn V-shaped groove meets following relationship:
And the angle of the rotating shaft of the upper cell wall of the V-shaped groove and the revolving body meets following relationship
The acute angle of the upper cell wall of the V-shaped groove and lower cell wall meets following relationship:
Wherein, σ is to connect between the point on the overhead pulley profile of the multi-turn V-shaped groove of same longitudinal section and the point of section circle The angle that the reverse extending line of line intersects with rotating shaft, β are any point of section circle and the line of light source and rotating shaft Angle,For the angle of upper cell wall and rotating shaft, θ is the acute angle of upper cell wall and lower cell wall, n1For light beam adjustment element work Make the refractive index of environment, n2For the refractive index of light beam adjustment element material, and n2> n1。
5. light beam adjustment element according to claim 4, which is characterized in that the upper cell wall of each V-shaped groove and the revolution The angle of the rotating shaft of body is gradually increased from top to bottom, and/or, the acute angle of the upper cell wall of each V-shaped groove and lower cell wall is certainly It is gradually increased under above.
6. light beam adjustment element according to claim 5, which is characterized in that multi-turn V-shaped groove connects indention.
7. light beam adjustment element according to claim 5, which is characterized in that the tooth top of multi-turn V-shaped groove has chamfering or falls Fillet.
8. a kind of luminescence component, which is characterized in that the light beam including light source, and as described in claim 1~7 is any adjusts member Part, the light source are set to the lower section of the rotating shaft of the light beam adjustment element.
9. a kind of backlight module, which is characterized in that including luminescence component as claimed in claim 8.
CN201610640584.8A 2014-01-28 2014-01-28 A kind of light beam adjustment element, luminescence component and backlight module Active CN106200120B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1779530A (en) * 2004-11-24 2006-05-31 三星电子株式会社 Side light-emitting device, backlight unit, and liquid crystal display apparatus
CN202927738U (en) * 2012-11-09 2013-05-08 深圳Tcl新技术有限公司 LED optical lens and LED backlight module

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI260380B (en) * 2005-08-05 2006-08-21 Chi Lin Technology Co Ltd Lens for LED
KR101221066B1 (en) * 2006-10-30 2013-02-12 삼성전자주식회사 Side emitting lens, backlight unit and liquid crystal display having the same
CN201568891U (en) * 2009-11-24 2010-09-01 帝欧(上海)光电科技有限公司 Total angular LED lens
US8330342B2 (en) * 2009-12-21 2012-12-11 Malek Bhairi Spherical light output LED lens and heat sink stem system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1779530A (en) * 2004-11-24 2006-05-31 三星电子株式会社 Side light-emitting device, backlight unit, and liquid crystal display apparatus
CN202927738U (en) * 2012-11-09 2013-05-08 深圳Tcl新技术有限公司 LED optical lens and LED backlight module

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