CN101315488B - Light source and light reflection element using the same - Google Patents
Light source and light reflection element using the same Download PDFInfo
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- CN101315488B CN101315488B CN2007101087356A CN200710108735A CN101315488B CN 101315488 B CN101315488 B CN 101315488B CN 2007101087356 A CN2007101087356 A CN 2007101087356A CN 200710108735 A CN200710108735 A CN 200710108735A CN 101315488 B CN101315488 B CN 101315488B
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Abstract
The invention discloses a light source device and a light reflex element used by the light source device. The light source device comprises a luminous set for emitting light, and a reflex microstructure layer arranged at the base of the light source device to cause the light at the base of an incidence light box of the luminous set to be reflected out within a range of approximately the same direction.
Description
Technical field
The present invention relates to a kind of light supply apparatus with reflection microstructured layers.
Background technology
Light supply apparatus has a lot of application, for example generally is used for as backlight module on flat-panel screens.In traditional backlight module, it mainly is that (Dual BEF, DBEF) collocation of blooming piece such as grade makes and is used for reaching even with the concentrated purpose of light with diffusion sheet (Diffuser), brightening piece (BrightnessEnhance Film, BEF) or reflective brightening piece.
With regard to the light supply apparatus of straight-down negative (Direct type), traditional structure as shown in Figure 1.The section that Fig. 1 illustrates traditional directly-down light source device is an intention.Consult Fig. 1, the bottom of conventional light source device 100 is reflectings surface.By the light that fluorescent tube 102 sends, its light that sends down 104,106, the face that can be reflected reflection.Can understand ground, because reflecting surface is smooth reflecting surface, and reflected light can reflect according to the optical reflection theorem, therefore the light of reflection can significantly scatter, and does not have directivity, is unfavorable for light enhancing effect.
Low and the initial light field of the light extraction efficiency of traditional straight-down negative lamp box is not had a directivity, needs to see through the multi-disc blooming piece to readjust optical field distribution, and therefore generally speaking, its optical efficiency is lower and material cost is higher.
And general blooming piece all uses on fluorescent tube and diffuser plate.This kind traditional approach also relatively causes between diaphragm easily owing to interfere ripple (moire) phenomenon that is caused.
The employed diaphragm quantity of above-mentioned backlight module framework is many, goes up relatively and can cause the reduction of module optical efficiency, module cost height, the assembly yield problem of considering such as limited.Therefore, the design of backlight module still needs to continue research and development.
Summary of the invention
The invention provides a kind of light supply apparatus, it comprises the optical microstructures layer.Utilize the suitable design of microstructure, the bright dipping that can control bottom light source distributes, and to produce specific light field, can for example simplify the backlight module framework and promote the optics service efficiency.
The present invention proposes a kind of light supply apparatus, comprises luminous group, sends light source; And the reflection microstructured layers, be positioned at the base portion of light supply apparatus, so that on an identical haply direction, reflected by this reflection microstructured layers from luminous group of incident light to this reflection microstructured layers incident.Wherein this reflection microstructured layers comprises: light transmissive material basic unit; Concavo-convex grade micro-surface structure is formed in the light transmissive material basic unit, and with luminous group of same edge; And light reflection surface, be arranged on the concavo-convex grade micro-surface structure, so that incident light source is reflected.
The present invention proposes a kind of light supply apparatus in addition, comprising: luminous group, send light source; And the reflection microstructured layers, be positioned at the base portion of light supply apparatus, receiving from the luminous group of incident light source to the incident of reflection microstructured layers, and the incident light source microstructured layers that is reflected on an identical haply direction reflects.Wherein reflecting microstructured layers comprises: light transmissive material basic unit; Concavo-convex grade micro-surface structure is formed in the light transmissive material basic unit, and with luminous group of same edge; And light reflection surface, be arranged on one side of light transmissive material basic unit, and with concavo-convex grade micro-surface structure different edge, so that incident light source is reflected.
The present invention proposes a kind of light reflection element again, can reflect incident light source.Light reflection element comprises the reflection microstructured layers, and reflecting surface and concavo-convex grade micro-surface structure are arranged.The reflection microstructured layers is in order to receiving this incident light source, and incident light source is reflected on an identical haply direction.Wherein this reflection microstructured layers comprises: light transmissive material basic unit; Concavo-convex grade micro-surface structure is formed in the light transmissive material basic unit, and with light emitting source group same edge; And light reflection surface, be arranged on the concavo-convex grade micro-surface structure, so that incident light source is reflected.
The present invention reintroduces a kind of light reflection element, can reflect incident light source.Light reflection element comprises the reflection microstructured layers, and reflecting surface and concavo-convex grade micro-surface structure are arranged.Reflect microstructured layers in order to the reception incident light source, and incident light source is reflected on an identical haply direction.Wherein this reflection microstructured layers comprises: light transmissive material basic unit; Concavo-convex grade micro-surface structure is formed in the light transmissive material basic unit, and with light emitting source group same edge; And light reflection surface, be arranged on one side of light transmissive material basic unit, and with concavo-convex grade micro-surface structure different edge, so that incident light source is reflected.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 illustrates the diagrammatic cross-section of traditional directly-down light source device.
Fig. 2 illustrates according to the embodiment of the invention, a kind of cross-sectional view with light-emitting device of reflection micro-structured component design.
Fig. 3 illustrates according to another embodiment of the present invention, the reflection microstructured layers cross-sectional view of light supply apparatus.
Fig. 4 illustrates according to another embodiment of the present invention, the reflection microstructured layers cross-sectional view of light supply apparatus.
Fig. 5 illustrates according to another embodiment of the present invention, the reflection microstructured layers cross-sectional view of light supply apparatus.
Fig. 6 illustrates according to another embodiment of the present invention, the reflection microstructured layers cross-sectional view of light supply apparatus.
Fig. 7 illustrates according to another embodiment of the present invention, makes the synoptic diagram of reflection microstructured layers.
Fig. 8 illustrates according to the embodiment of the invention, checking distribution of light intensity data.
Fig. 9 illustrates according to the embodiment of the invention, directly the schematic perspective view of the light supply apparatus structure under.
Description of reference numerals
100: light supply apparatus 102: fluorescent tube
104,106: send light 200: light supply apparatus
202: light emitting source group 204: the reflection microstructured layers
206: light 208: zone
210: printing opacity basic unit 300,400,500,600: the reflection microstructured layers
302,404: concavo-convex grade micro-surface structure 304: light reflection surface
700: microstructure die 702: microstructure
704: plastic substrate 706: light transmissive material
708: concavo-convex structure 900: the reflection microstructured layers
902: light reflection surface 904: luminous group
906: diffusion sheet 908: the prism bar layer
910: light 912: light supply apparatus
Embodiment
With regard to the light-emitting device of for example lamp box, the present invention sees through at the light-emitting device base portion, or the lamp box base portion is provided with microstructure design and distribution, can increase light extraction efficiency and controlled to the initial light field distribution simultaneously, increase the effect of light harvesting, also so for example can effectively simplify the diaphragm usage quantity in the backlight module and reduce the module cost simultaneously.
Again,, can avoid waviness phenomena and reduce the defective requirement degree that micro-structured component is produced on making, with the raising rate that manufactures a finished product because micro-structured component is the below that places fluorescent tube and diffuser plate.In addition, the present invention still can be for example by the adjustment of the structure plan (structure pattern) of micro-structured component, can control reflection light field and compensate dark space between fluorescent tube, slow down fluorescent tube simultaneously and cause the phenomenon of brightness irregularities and the use amount that reduces fluorescent tube, reduce the module cost effectively.
Below describe feature of the present invention, but the present invention is not limited only to illustrated embodiment for some embodiment.
Fig. 2 illustrates according to the embodiment of the invention, a kind of cross-sectional view with light-emitting device of reflection micro-structured component design.Consult Fig. 2, light-emitting device 200 can include a plurality of different components, wherein for example includes luminous group 202 as lamp source and reflection microstructured layers 204, and it for example is located at the base portion of light-emitting device.At this, luminous group 202 for example is the strip fluorescent tube, and its light that sends downwards can be reflected, and microstructured layers receives and reflection.The reflection microstructured layers is for example got the structure for amplifying in zone 208, includes printing opacity basic unit 210, and its surface can irregular micro structured pattern.In addition, for example be coated with optical reflection film 204 again as light reflection surface on the surface of concavo-convex micro structured pattern.By the angular setting of micro structured pattern, make the light 206 that is reflected in an angular range, to be reflected at least haply.Therefore, the reflection microstructured layers is except can be with incident light reflection with continuing to use, again the tool effect of adding lustre to simultaneously.
Being noted that above-mentioned luminous group 202, can be general light-emitting component, and it for example also can be the bulb of point-like except the strip fluorescent tube, can be light emitting diode again or also.The pattern of reflection microstructured layers cooperates luminous group 202 that is adopted, and can be the design of one dimension or two dimension.As for luminous group 202 quantity, be to decide, to constitute luminous group according to actual needs.Below more lift under the same design principle, at the embodiment of some design variation of reflection microstructured layers, but the present invention be not subject to for embodiment.
Fig. 3 illustrates according to another embodiment of the present invention, the reflection microstructured layers cross-sectional view of light supply apparatus.Consult Fig. 3, at this embodiment, luminous group 202 of light supply apparatus is made of the vertical bar fluorescent tube.Reflection microstructured layers 300 for example is as main body by light transmissive material basic unit 302.Surface in light transmissive material basic unit 302, for example the surface with luminous group 202 different edge can be formed with concavo-convex grade micro-surface structure.The relief pattern of concavo-convex grade micro-surface structure, the position that is relative fluorescent tube for example is to change regularly.More for example because fluorescent tube itself also can be upwards luminous, therefore below luminous group 202 for example by the adjustment of microstructure, reduce the intensity of reflection, can be reduced near the phenomenon that brightness irregularities is arranged luminous group 202 the fluorescent tube.
Again, go back to re-use for making light energy reflected, also be provided with light reflection surface 304 on the structural plane of concavo-convex grade micro-surface structure, it for example is the plated film of reflection.Material as for light transmissive material basic unit 302 has refractive index, and it for example is individual layer or multilayer refraction materials.The size of refractive index can determine the generation of inner total reflection.As for the concaveconvex structure unit of concavo-convex grade micro-surface structure, the distance of being separated by can be adjusted according to actual the need, to reach suitable distribution, generally for example be by micron to centimetre yardstick all can.Again, the concaveconvex structure unit of concavo-convex grade micro-surface structure cooperates the position of fluorescent tube for one-dimentional structure, for example be the list structure of wedge angle, but also can be the convex cone shaped structure of Two dimensional Distribution, its two more can mix and match.The drift angle of wedge angle strip or convex cone shaped structure is for example between 20 °～170 °.And two base angles of convex cone shaped structure can be asymmetrical angle, for example between 5 °～90 °.Again, microstructure unit also for example can be the cylindroid structure, and its radius-of-curvature is for example between 10 μ m～500 μ m.In other words, the concaveconvex structure unit for example can be pyramid, sphere, aspheric surface or polygonal any convex-concave structure, does not enumerate one by one.
Again, the distribution of a plurality of microstructure units can be evenly to reach property arrangement in interval heterogeneous, for example is again single continuous or discontinuous array architecture, and its arrangement mode can be the random two-dimensional function, comprises random number and arranges.
Again, continue to consult 3, light transmissive material basic unit 302 representatives that are painted with oblique line are single objects.Yet, below light transmissive material basic unit 302, also can also comprise base material and light transmissive material basic unit 302 and be combined into described reflection microstructured layers 300, wherein for example the interface of base material and light transmissive material basic unit 302 for example is a light reflection surface 304.
Fig. 4 illustrates according to another embodiment of the present invention, the reflection microstructured layers cross-sectional view of light supply apparatus.Consult Fig. 4, reflection microstructured layers 400 comprises light transmissive material basic unit 402 and light reflection surface 304.There are similar concave-convex micro-structure in light transmissive material basic unit 404 and the light transmissive material basic unit 302 of Fig. 3, but light reflection surface 304 the position difference is set.At Fig. 4 embodiment, light reflection surface 304 is to separate the reflecting surface that is provided with.Again, the light transmissive material basic unit 404 that is painted with oblique line is single objects.Yet, below light transmissive material basic unit 404, also can also comprise base material and light transmissive material basic unit 404 and be combined into described reflection microstructured layers 400.
Fig. 5 illustrates according to another embodiment of the present invention, the reflection microstructured layers cross-sectional view of light supply apparatus.Consult Fig. 5, reflection microstructured layers 500 is light transmissive materials, has the concave-convex micro-structure layer on the surface with luminous group 202 vicinity.When this designed, light reflection surface was arranged on the surface of concave-convex micro-structure layer.
Fig. 6 illustrates according to another embodiment of the present invention, the reflection microstructured layers cross-sectional view of light supply apparatus.Consult Fig. 6, reflection microstructured layers 600 is light transmissive materials, has the concave-convex micro-structure layer on the surface with luminous group 202 vicinity.Yet when this designed, light reflection surface was arranged on the bottom surface of reflection microstructured layers 600, rather than was arranged on the surface of concave-convex micro-structure layer.
The reflection microstructured layers of above-mentioned several designs, it comprises the effect with reflection and light harvesting simultaneously, and reflection luminous energy is reflected on an identical direction haply, for example in the vertical direction reflection, reaches the light enhancing effect of some degree.After the shape decision of the microstructure that reflects microstructured layers, just can suitably make on the material.Below make the embodiment that reflects microstructured layers for one, Fig. 7 illustrates according to another embodiment of the present invention, makes the synoptic diagram of reflection microstructured layers.Consult Fig. 7, produce a string microstructure 702, and be seated in cylinder formation microstructure die 700 according to the shape of desired concave-convex micro-structure.On plastic substrate 704, for example form and to pass through UV cured light transmissive material 706 again.Before also not hardening, the cylinder with micro structured pattern rolls across light transmissive material 706, can stay concavo-convex structure 708 of the shape of wanting.At this embodiment, the pattern of microstructure for example is to change in the cycle, but is not unique selection.Behind overcure, microstructured layers can be formed on the plastic substrate 704.Then, according to need, continue for example to plate optical reflection film, to form the reflection microstructured layers.Optical reflection film is produced on the surface of concave-convex micro-structure, as the design of Fig. 3, Fig. 5, also can be produced on the back side of plastic substrate 704 again in addition, as the design of Fig. 4, Fig. 6.Actual production method also be not limited only to for embodiment.
According to design of the present invention, the effect of promoting as can be seen through simplation verification.Fig. 8 is the framework according to Fig. 3, adjusts the simulated light curvature of field line chart of microstructure front and back, with the relation at checking light intensity and visual angle.The Square Number strong point is the light field curve under the non-structure design.Circular data point, its microstructure are regularly arranged identical convex cone shapeds.The equilateral triangle data point, its convex cone shaped microstructure is with the different adjustment of doing drift angle in the position of light source.Del data point, its microstructure are to change the convex cone shaped structure into the cylindroid shape.Visual angle in the drawings is an angle of representing observation device.For example, zero degree representative in visual angle is the light intensity of vertical plane to light-emitting device.From data presentation, the present invention can more concentrate on the small angle scope with reflected light and reflect, and it that is to say to have the effect that directivity is added lustre to.
Fig. 9 illustrates according to the embodiment of the invention, directly the schematic perspective view of the light supply apparatus structure under.Consulting Fig. 9, for example is the basis that is designed to Fig. 4, and reflection microstructured layers 900 can be arranged, and its light reflection surface 902 is arranged on the bottom surface.Reflection microstructured layers 900 is provided with luminous group 904, is made of many fluorescent tubes.Luminous group 904 with the reflection microstructured layers 900 for example can constitute light supply apparatus 912.By the light 910 that fluorescent tube sends, by the effect of reflection microstructured layers 900, the part of incident light can more tend to vertical direction and be reflected away, reaches the effect of adding lustre to.At this, some mechanical support members and relevant circuit structure are not drawn and are described, and can understand and will not describe in detail but can be those skilled in the art.
Generally in order more to increase luminescence efficiency, can add again in the back and be provided with diffusion sheet 906 and prism bar layer 908.Diffusion sheet 906 can make light more even, and prism bar layer 908 goes out the direction scope internal reflection of the normal direction of more past vertical exiting surface as the use of brightening piece.
The present invention proposes to have can be to the micro-structured component of incident light travel direction total reflection feature, and the position for example is positioned at straight-down negative lamp box base portion, can significantly improve the problem of the uncontrollable reflected light shape of reflector plate in the tradition.Microstructure parameters on it can be done according to lamp strip position and required optical field distribution and arrange and change in shape.According to optical property, its body structure surface and material are plated film reflection and light transmissive material, utilize surface reflection and inner full-reflection mechanism, and corresponding design is done in the light source light field distribution according to user demand.After adjusting structure, light field adjustment curve distribution plan between two fluorescent tubes, change along with microstructure, for example can effectively the wide-angle light field be suppressed, and the centre visual angle light field is promoted, promptly through a light field light harvesting modulation, more even and gathering when making light penetration is to obtain the bright dipping of high brightness before the light source light field is injected blooming piece.
Again, the present invention for example can arrange in pairs or groups simultaneously and produce the light source light field that blooming piece was fit to, and effective bright dipping shaping is done by backlight mechanism.Aspect reducing cost, because effective modulation of light source light field, can reduce the radical of cold-cathode tube (CCFL) fluorescent tube, and the concentration that reduces diffuser plate.Aspect demonstration, this patent places the following of fluorescent tube and diffuser plate with micro-structured component, can reduce the phenomenon of brightness irregularities and the defective that micro-structured component is produced on making, and can effectively promote whole yield rate.
The realization of the Microstructure Optics element among the present invention can utilize Ultraprecision Machining to be machined on the metal die with shaping monocrystalline diamond cutter, and collocation rolling forming technology is carried out ultraviolet curing, microstructure transcription on the die on optical element, had the production advantage on the actual volume production.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is when looking being as the criterion that accompanying Claim defines.
Claims (6)
1. light supply apparatus comprises:
Luminous group, send light source; And
The reflection microstructured layers is positioned at the base portion of this light supply apparatus, and receiving from the luminous group of incident light source to this reflection microstructured layers incident, and this incident light source reflects by this reflection microstructured layers on an identical haply direction,
Wherein this reflection microstructured layers comprises:
Light transmissive material basic unit;
Concavo-convex grade micro-surface structure is formed in this light transmissive material basic unit, and with this luminous group of same edge; And
Light reflection surface is arranged on this concavo-convex grade micro-surface structure, so that this incident light source is reflected.
2. light supply apparatus as claimed in claim 1, wherein this light reflection surface comprises plated film.
3. light supply apparatus comprises:
Luminous group, send light source; And
The reflection microstructured layers is positioned at the base portion of this light supply apparatus, and receiving from the luminous group of incident light source to this reflection microstructured layers incident, and this incident light source reflects by this reflection microstructured layers on an identical haply direction,
Wherein this reflection microstructured layers comprises:
Light transmissive material basic unit;
Concavo-convex grade micro-surface structure is formed in this light transmissive material basic unit, and with this luminous group of same edge; And
Light reflection surface is arranged on one side of this light transmissive material basic unit, and with this concavo-convex grade micro-surface structure different edge, with this incident light source reflection.
4. a light reflection element can reflect the incident light source toward this light reflection element incident, comprising:
The reflection microstructured layers includes reflecting surface and concavo-convex grade micro-surface structure, and this reflection microstructured layers is in order to receiving this incident light source, and this incident light source is reflected on an identical haply direction,
Wherein this reflection microstructured layers comprises:
Light transmissive material basic unit;
Concavo-convex grade micro-surface structure is formed in this light transmissive material basic unit, and with this light emitting source group same edge; And
Light reflection surface is arranged on this concavo-convex grade micro-surface structure, so that this incident light source is reflected.
5. light reflection element as claimed in claim 4, wherein this light reflection surface comprises plated film.
6. a light reflection element can reflect the incident light source toward this light reflection element incident, comprising:
The reflection microstructured layers includes reflecting surface and concavo-convex grade micro-surface structure, and this reflection microstructured layers is in order to receiving this incident light source, and this incident light source is reflected on an identical haply direction,
Wherein this reflection microstructured layers comprises:
Light transmissive material basic unit;
Concavo-convex grade micro-surface structure is formed in this light transmissive material basic unit, and with this light emitting source group same edge; And
Light reflection surface is arranged on one side of this light transmissive material basic unit, and with this concavo-convex grade micro-surface structure different edge, with this incident light source reflection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101087356A CN101315488B (en) | 2007-05-31 | 2007-05-31 | Light source and light reflection element using the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101087356A CN101315488B (en) | 2007-05-31 | 2007-05-31 | Light source and light reflection element using the same |
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| CN101315488A CN101315488A (en) | 2008-12-03 |
| CN101315488B true CN101315488B (en) | 2010-06-09 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2496052Y (en) * | 2001-04-13 | 2002-06-19 | 宋义 | Improved, uniform and high efficiency side lighting type back light source |
| CN1362636A (en) * | 2000-12-28 | 2002-08-07 | 欧姆龙株式会社 | Reflection type display device and manufacture mehtod thereof, and instrument using said display device |
| CN1399159A (en) * | 2001-07-19 | 2003-02-26 | 欧姆龙株式会社 | Reflecting display and mobile message equipment |
| CN1912703A (en) * | 2005-08-12 | 2007-02-14 | 鸿富锦精密工业（深圳）有限公司 | Direct light backlight mould set and its transmitting plate |
| EP1767963A1 (en) * | 2004-06-21 | 2007-03-28 | Idemitsu Kosan Co., Ltd. | Back chassis integrating reflector, back light and liquid crystal display |
-
2007
- 2007-05-31 CN CN2007101087356A patent/CN101315488B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1362636A (en) * | 2000-12-28 | 2002-08-07 | 欧姆龙株式会社 | Reflection type display device and manufacture mehtod thereof, and instrument using said display device |
| CN2496052Y (en) * | 2001-04-13 | 2002-06-19 | 宋义 | Improved, uniform and high efficiency side lighting type back light source |
| CN1399159A (en) * | 2001-07-19 | 2003-02-26 | 欧姆龙株式会社 | Reflecting display and mobile message equipment |
| EP1767963A1 (en) * | 2004-06-21 | 2007-03-28 | Idemitsu Kosan Co., Ltd. | Back chassis integrating reflector, back light and liquid crystal display |
| CN1912703A (en) * | 2005-08-12 | 2007-02-14 | 鸿富锦精密工业（深圳）有限公司 | Direct light backlight mould set and its transmitting plate |
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| CN101315488A (en) | 2008-12-03 |
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