CN104676350B - Light-emitting device and backlight module - Google Patents
Light-emitting device and backlight module Download PDFInfo
- Publication number
- CN104676350B CN104676350B CN201310609924.7A CN201310609924A CN104676350B CN 104676350 B CN104676350 B CN 104676350B CN 201310609924 A CN201310609924 A CN 201310609924A CN 104676350 B CN104676350 B CN 104676350B
- Authority
- CN
- China
- Prior art keywords
- light
- emitting device
- expansion
- optical lens
- light source
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- 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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/104—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening using feather joints, e.g. tongues and grooves, with or without friction
-
- 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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
-
- 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
- F21V5/046—Refractors for light sources of lens shape the lens having a rotationally symmetrical shape about an axis for transmitting light in a direction mainly perpendicular to this axis, e.g. ring or annular lens with light source disposed inside the ring
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention relates to a kind of light-emitting device, which includes light source and expands light unit.The expansion light unit includes expanding optical lens and expands the ring of light.The expansion optical lens includes incidence surface, light-emitting surface and side.The side connects the incidence surface and the light-emitting surface.The incidence surface is offered to be located in the accommodating cavity towards the recessed accommodating cavity of the light-emitting surface, the light source.The expansion ring of light is installed on the light-emitting surface and some light one way or another will send from the light source and be emitted through the expansion optical lens corresponding with the light source reflects.The invention further relates to a kind of backlight module for including the light-emitting device.
Description
Technical field
The present invention is on a kind of light-emitting device and a kind of backlight module for including the light-emitting device.
Background technology
At present, large scale display panel uses direct type backlight module more.In direct type backlight module, it will usually sending out
Optical diode（light emitting diode, LED）Above light source plus one is expanded light unit with by divergence of beam, so as to subtract
The usage quantity of few LED light source.
The light that LED light source is sent usually has approximate circle symmetric form light field after expanding light unit, and such as Fig. 1, is existing
Illumination simulation drawing of the light that LED light source is sent in technology after expanding light unit, the illumination is along its center around in inequality
Even distribution, there is the light-emitting device of such a illumination to be applied to that in backlight module the uniform light that the backlight module is sent will necessarily be made
Property is bad.
The content of the invention
In view of this, it is necessary to a kind of light-emitting device that can improve the light diffusion uniformity is provided and one kind shines comprising this
The backlight module of device.
A kind of light-emitting device includes light source and expands light unit.The expansion light unit includes expanding optical lens and expands the ring of light.The expansion light
Lens include incidence surface, light-emitting surface and side.The side connects the incidence surface and the light-emitting surface.The incidence surface is offered towards this
The recessed accommodating cavity of light-emitting surface, the light source are located in the accommodating cavity.The expansion ring of light be installed on the light-emitting surface on and with the light source pair
It should be reflected with some light one way or another that will be sent from the light source and be emitted through the expansion optical lens.
A kind of backlight module includes a light-emitting device and a diffuser plate as described above.The diffuser plate is located at the expansion
Optical lens deviates from the side of the light source.The diffuser plate is aligned with the expansion optical lens to be shone for receiving and further dissipating by this
The light that device is sent.
Backlight module use provided by the invention and light-emitting device will be incident to the light of the expansion ring of light using the expansion ring of light
One way or another reflects, so that the light diffusion from light-emitting device outgoing is uniform, so that be emitted from the backlight module
Uniform light.
Brief description of the drawings
Fig. 1 is the illuminance simulation drawing of the light-emitting device of the prior art.
Fig. 2 is the schematic perspective view for the light-emitting device that first embodiment of the invention provides.
Fig. 3 is the decomposition diagram of light-emitting device in Fig. 2.
Fig. 4 is diagrammatic cross-section of the light-emitting device along IV-IV lines in Fig. 2.
Fig. 5 is the illuminance simulation drawing of the light of the light-emitting device outgoing in Fig. 2.
Fig. 6 is the diagrammatic cross-section for the backlight module that second embodiment of the invention provides.
Main element symbol description
| Light-emitting device | 100 |
| Light source | 10 |
| Expand light unit | 20 |
| Expand optical lens | 22 |
| Installed part | 24 |
| Expand the ring of light | 26 |
| Accommodating cavity | 220 |
| Incidence surface | 222 |
| Light-emitting surface | 224 |
| Side | 226 |
| Annular groove | 228 |
| Bayonet | 249 |
| Card column | 269 |
| Backlight module | 200 |
| Diffuser plate | 50 |
| The plane of incidence | 52 |
| Exit facet | 54 |
Following embodiment will combine above-mentioned attached drawing and further illustrate the present invention.
Embodiment
Embodiment of the present invention will be described in further detail below in conjunction with the accompanying drawings.
As in Figure 2-4, the light-emitting device 100 that first embodiment of the invention provides includes a light source 10 and one
Expand light unit 20.
The light that the light source 10 is sent is spread via the expansion light unit 20, from the light illuminance of the expansion light unit 20 outgoing
Uniformly.In present embodiment, which is light emitting diode（light emitting diode, LED）.
The expansion light unit 20 includes one and expands 22, installed parts 24 of optical lens and an expansion ring of light 26.The expansion ring of light
26 are installed on the expansion optical lens 22 by the installed part 24.
The expansion optical lens 22 includes 222, light-emitting surfaces 224 of an incidence surface and a side 226.The side 226
Connect the incidence surface 222 and the light-emitting surface 224.The light-emitting surface 224 is protruded towards the direction away from the incidence surface 222.The light-emitting surface
224 be non-spherical surface.The directional smoothing of the top of the light-emitting surface 224 towards the incidence surface 222 is recessed.The incidence surface 222 is opened
Equipped with towards the recessed accommodating cavity 220 of the light-emitting surface 224.The expansion optical lens 22 has a central axes O, and the expansion optical lens 22 is with this
Central axes O is centrosymmetric distribution.The light source 10 is located in the accommodating cavity 220, which also is located on the O of the central axes.Should
An annular groove 228 is provided with light-emitting surface 224.The annular groove 228 is in center pair with the central axes O of the expansion optical lens 22
Claim.
The installed part 24 is annular.The installed part 24 is inserted into the annular groove 228.The installed part 24 is inserted into
228 rear portion of annular groove protrudes from the annular groove 228.The installed part 24 protrudes from the part of the annular groove 228
One end away from the expansion optical lens 22 is provided with multiple bayonets 249.The installed part 24 can use identical with the expansion optical lens 22
Material be made.In present embodiment, which uses polymethyl methacrylate with the expansion optical lens 22
（PMMA）It is made.It is understood that the installed part 24 can also be integrally formed with the expansion optical lens 22.
The expansion ring of light 26 is circle along the section in the central axes O directions of the expansion optical lens 22.The outside diameter of the expansion ring of light 26
Less than the internal diameter of the installed part 24.The periphery of the expansion ring of light 26 is provided with and the plurality of bayonet 249 multiple card columns correspondingly
269.After the plurality of card column 269 engages with the plurality of bayonet 249 one-to-one corresponding, which installs to the installed part 24,
In this way, the expansion ring of light 26 is just installed on the light-emitting surface 224.Since the annular groove 228 is with the central axes O of the expansion optical lens 22
It is centrosymmetric, which is also centrosymmetric with the central axes O of the expansion optical lens 22.The outer surface energy of the expansion ring of light 26
It is enough to reflect light.In present embodiment, there is a certain distance between the expansion ring of light 26 and the light-emitting surface 224, the expansion ring of light
26 different conditions that can be incident to the expansion optical lens 22 according to light with the distance between the light-emitting surface 224 are adjusted, with
Enable more uniform by illuminance after 26 one way or another of expansion ring of light reflection from the light that the light-emitting surface 224 is emitted.This reality
Apply in mode, which is that the circular ring shape base material being made in polymethyl methacrylate plates last layer reflectance coating shape
Into.It is understood that the expansion ring of light 26 also may be used using the other structures that outer surface has reflex.
When the light-emitting device 100 works, the expansion optical lens is incident to from the incidence surface 222 by the light that light source 10 is sent
22, and be emitted from the light-emitting surface 224.A part is incident to the expansion ring of light 26 from the light of the light-emitting surface 224 outgoing, is incident to
The light of the expansion ring of light 26 is reflected by 26 one way or another of the expansion ring of light, so that the light being emitted from the light-emitting device 100
Illuminance is uniform.As shown in figure 5, the light-emitting device 100 provided for first embodiment of the invention goes out illuminance figure, compare
Understand, the light-emitting device 100 outgoing light illuminance will be than in the prior art light-emitting device outgoing light illumination
Degree（As shown in Figure 1）Uniformly.
Referring to Fig. 6, the backlight module 200 that second embodiment of the invention provides includes shining in first embodiment
Device 100 and a diffuser plate 50.Details are not described herein for the concrete structure of the light-emitting device 100.
The diffuser plate 50 includes a plane of incidence 52 and an exit facet 54.The plane of incidence 52 is distinguished with the exit facet 54
The both sides opposite positioned at the diffuser plate 50, and the plane of incidence 52 is parallel with the exit facet 54.It is saturating that the diffuser plate 50 is located at the expansion light
Mirror 22 deviates from the side of the light source 10, i.e. the diffuser plate 50 is located at the side where the light-emitting surface 224 of the expansion optical lens 22.This enters
It is opposite with the light-emitting surface 224 to penetrate face 52.By the light that the light-emitting device 100 is emitted the diffuser plate is incident to via the plane of incidence 52
50 and further dissipated by the diffuser plate 50.
Backlight module 200 provided by the invention uses the light-emitting device 100, and the light-emitting device 100 is in the expansion optical lens 22
Light-emitting surface 224 on installation one expand the ring of light 26 so that being incident to the light of the expansion ring of light 26 by 26 one way or another of the expansion ring of light
Reflection, so so that the diffusion from the light of the light-emitting device 100 outgoing is uniform, and then the light for being emitted the backlight module 200
Line is uniform.
Although the present invention has revealed that embodiment, it is not limited to the present invention, the technology of any this area
Personnel, the displacement of made equivalent structure or step on the premise of the spirit and scope of the present invention are not departed from, or Yi Benfa
The equivalent variations and modification that bright scope of patent protection is made, all should still belong to the category that this patent is covered.
Claims (8)
1. a kind of light-emitting device, including light source and expansion light unit, its improvement are, which includes expanding optical lens and expands light
Ring, the expansion optical lens include incidence surface, light-emitting surface and side, which connects the incidence surface and the light-emitting surface, the incidence surface
Offer and be located at towards the recessed accommodating cavity of the light-emitting surface, the light source in the accommodating cavity, which is installed on the light-emitting surface simultaneously
The some light one way or another will send from the light source and be emitted through the expansion optical lens corresponding with the light source reflects, the light extraction
An annular groove is provided with face, which further includes an installed part, which is annular, which is inserted into
A part to the annular groove and the installed part protrudes from the annular groove, and the part of the installed part offers multiple cards
Mouthful, the periphery of the expansion ring of light is provided with multiple card columns, which is installed on the installed part, and the plurality of card column is fastened on respectively
In the plurality of bayonet.
2. light-emitting device as claimed in claim 1, it is characterised in that during the annular groove is in the central axes of the expansion optical lens
The heart is symmetrical.
3. light-emitting device as claimed in claim 2, it is characterised in that the expansion ring of light is along the central axes direction of the expansion optical lens
Section is circle.
4. light-emitting device as claimed in claim 1, it is characterised in that the expansion optical lens uses identical material with the installed part
It is made.
5. light-emitting device as claimed in claim 1, it is characterised in that the expansion optical lens is made of polymethyl methacrylate
Form.
6. light-emitting device as claimed in claim 1, it is characterised in that the expansion ring of light be polymethyl methacrylate make and
Into circular ring shape base material plating last layer reflectance coating be made.
7. light-emitting device as claimed in claim 1, it is characterised in that the light source is LED source.
8. a kind of backlight module, including one the light-emitting device and a diffusion as described in claim 1 to 7 any one
Plate, the diffuser plate are located at the side that the expansion optical lens deviates from the light source, which is aligned with the expansion optical lens for receiving
And further dissipate the light sent by the light-emitting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310609924.7A CN104676350B (en) | 2013-11-27 | 2013-11-27 | Light-emitting device and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310609924.7A CN104676350B (en) | 2013-11-27 | 2013-11-27 | Light-emitting device and backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104676350A CN104676350A (en) | 2015-06-03 |
| CN104676350B true CN104676350B (en) | 2018-05-11 |
Family
ID=53311758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310609924.7A Expired - Fee Related CN104676350B (en) | 2013-11-27 | 2013-11-27 | Light-emitting device and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104676350B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6582103B1 (en) * | 1996-12-12 | 2003-06-24 | Teledyne Lighting And Display Products, Inc. | Lighting apparatus |
| CN101201415A (en) * | 2006-12-15 | 2008-06-18 | 鸿富锦精密工业（深圳）有限公司 | Light guide lens and LED containing the same |
| CN101749571A (en) * | 2008-12-12 | 2010-06-23 | 鸿富锦精密工业（深圳）有限公司 | Light source module |
| WO2011086652A1 (en) * | 2010-01-13 | 2011-07-21 | パナソニック株式会社 | Light emitting device and surface light source apparatus using same |
| CN102392955A (en) * | 2010-06-21 | 2012-03-28 | 恩普乐股份有限公司 | Light emitting apparatus, surface light source apparatus, display apparatus, and luminous flux control member |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060023452A1 (en) * | 2004-07-28 | 2006-02-02 | Kuo-Yen Lai | Scanning illumination module |
-
2013
- 2013-11-27 CN CN201310609924.7A patent/CN104676350B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6582103B1 (en) * | 1996-12-12 | 2003-06-24 | Teledyne Lighting And Display Products, Inc. | Lighting apparatus |
| CN101201415A (en) * | 2006-12-15 | 2008-06-18 | 鸿富锦精密工业（深圳）有限公司 | Light guide lens and LED containing the same |
| CN101749571A (en) * | 2008-12-12 | 2010-06-23 | 鸿富锦精密工业（深圳）有限公司 | Light source module |
| WO2011086652A1 (en) * | 2010-01-13 | 2011-07-21 | パナソニック株式会社 | Light emitting device and surface light source apparatus using same |
| CN102392955A (en) * | 2010-06-21 | 2012-03-28 | 恩普乐股份有限公司 | Light emitting apparatus, surface light source apparatus, display apparatus, and luminous flux control member |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104676350A (en) | 2015-06-03 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180411 Address after: 518109 Guangdong province Shenzhen city Longhua District Dragon Road No. 83 wing group building 11 floor Applicant after: SCIENBIZIP CONSULTING (SHEN ZHEN) CO., LTD. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Applicant before: Hongfujin Precise Industry (Shenzhen) Co., Ltd. Applicant before: Hon Hai Precision Industry Co., Ltd. |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180511 Termination date: 20181127 |
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| CF01 | Termination of patent right due to non-payment of annual fee |