CN104676350A - Light-emitting device and backlight module - Google Patents
Light-emitting device and backlight module Download PDFInfo
- Publication number
- CN104676350A CN104676350A CN201310609924.7A CN201310609924A CN104676350A CN 104676350 A CN104676350 A CN 104676350A CN 201310609924 A CN201310609924 A CN 201310609924A CN 104676350 A CN104676350 A CN 104676350A
- Authority
- CN
- China
- Prior art keywords
- light
- emitting device
- expansion
- optical lens
- installed part
- 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.)
- Granted
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 invention relates to a light-emitting device. The light-emitting device comprises a light source and a light expanding unit. The light expanding unit comprises a light expanding lens and a light expanding ring; the light expanding lens comprises a light-incident face, a light-emitting face and a side face; the side face is connected with the light-incident face and the light-emitting face; the light-incident face is provided with a containing cavity which is sunk towards the light-emitting face; the light source is located in the containing cavity; and the light expanding ring is arranged on the light-emitting face and corresponds to the light source so as to enable part of light which is emitted out of the light source and is emergent through the light expanding lens to be reflected in all directions. The invention further relates to a backlight module comprising the light-emitting module.
Description
Technical field
The present invention is about a kind of light-emitting device and a kind of backlight module comprising this light-emitting device.
Background technology
At present, large scale display floater many employings direct type backlight module.In direct type backlight module, usually can add one and expand light unit with by divergence of beam above light emitting diode (light emitting diode, LED) light source, thus reduce the usage quantity of LED light source.
The light that LED light source sends usually has approximate circle symmetric form light field after expanding light unit, as Fig. 1, for the illumination simulation drawing of light after expansion light unit that LED light source in prior art sends, this illumination is uneven distribution along its center to surrounding, and it is not good that the light-emitting device with this kind of illumination is applied in backlight module the light uniformity that this backlight module will inevitably be made to send.
Summary of the invention
In view of this, be necessary that providing a kind of can improve the light-emitting device of the light diffusion uniformity and a kind of backlight module comprising this light-emitting device.
A kind of light-emitting device comprises light source and expands light unit.This expansion light unit comprises expansion optical lens and expands the ring of light.This expansion optical lens comprises incidence surface, exiting surface and side.This side connects this incidence surface and this exiting surface.This incidence surface offers towards the recessed accommodating cavity of this exiting surface, and this light source is positioned at this accommodating cavity.This expansion ring of light to be arranged on this exiting surface and corresponding to this light source will to send from this light source and some light one way or another through this expansion optical lens outgoing reflects.
A kind of backlight module comprises a light-emitting device as above and a diffuser plate.This diffuser plate is positioned at the side that this expansion optical lens deviates from this light source.This diffuser plate is aimed at this expansion optical lens for receiving and dispersing the light sent by this light-emitting device further.
Backlight module provided by the invention adopts and light-emitting device utilizes this expansion ring of light will be incident to the light one way or another reflection of this expansion ring of light, even to make from the light diffusion of this light-emitting device outgoing, thus makes the uniform light from this backlight module outgoing.
Accompanying drawing explanation
Fig. 1 is the illuminance simulation drawing of the light-emitting device of prior art.
The schematic perspective view of the light-emitting device that Fig. 2 provides for first embodiment of the invention.
Fig. 3 is the decomposing schematic representation of light-emitting device in Fig. 2.
Fig. 4 be in Fig. 2 light-emitting device along the generalized section of IV-IV line.
Fig. 5 is the illuminance simulation drawing of the light of light-emitting device outgoing in Fig. 2.
The generalized section of the backlight module that Fig. 6 provides for second embodiment of the invention.
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 |
| Exiting surface | 224 |
| Side | 226 |
| Annular groove | 228 |
| Bayonet socket | 249 |
| Card column | 269 |
| Backlight module | 200 |
| Diffuser plate | 50 |
| The plane of incidence | 52 |
| Exit facet | 54 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
To be described in further detail embodiment of the present invention below in conjunction with accompanying drawing.
As in Figure 2-4, the light-emitting device 100 that first embodiment of the invention provides comprises a light source 10 and an expansion light unit 20.
The light that this light source 10 sends spreads via this expansion light unit 20, even from the light illuminance of this expansion light unit 20 outgoing.In present embodiment, this light source 10 is light emitting diode (light emitting diode, LED).
This expansion light unit 20 comprises one and expands optical lens 22, installed part 24 and an expansion ring of light 26.This expansion ring of light 26 is arranged on this expansion optical lens 22 by this installed part 24.
This expansion optical lens 22 comprises an incidence surface 222, exiting surface 224 and a side 226.This side 226 connects this incidence surface 222 and this exiting surface 224.This exiting surface 224 protrudes towards the direction away from this incidence surface 222.This exiting surface 224 is non-spherical surface.Cave in towards the directional smoothing of this incidence surface 222 in the top of this exiting surface 224.This incidence surface 222 offers towards the recessed accommodating cavity 220 of this exiting surface 224.This expansion optical lens 22 has an axis O, and this expansion optical lens 22 to be centrosymmetric distribution with this axis O.This light source 10 is positioned at this accommodating cavity 220, and this light source 10 is also positioned on the O of this axis.This exiting surface 224 is provided with an annular groove 228.This annular groove 228 is centrosymmetric with the axis O of this expansion optical lens 22.
This installed part 24 is annular.This installed part 24 can be inserted in this annular groove 228.This installed part 24 is inserted into this annular groove 228 rear portion and protrudes from this annular groove 228.The part that this installed part 24 protrudes from this annular groove 228 is provided with multiple bayonet socket 249 in the one end away from this expansion optical lens 22.This installed part 24 can adopt identical material to be made with this expansion optical lens 22.In present embodiment, this installed part 24 all adopts polymethyl methacrylate (PMMA) to be made with this expansion optical lens 22.Be understandable that, this installed part 24 also can be one-body molded with this expansion optical lens 22.
This expansion ring of light 26 along this expansion optical lens 22 O direction, axis cross section be circular.The external diameter of this expansion ring of light 26 is less than the internal diameter of this installed part 24.The periphery of this expansion ring of light 26 is provided with and the plurality of bayonet socket 249 multiple card column 269 one to one.After the plurality of card column 269 engages with the plurality of bayonet socket 249 one_to_one corresponding, this expansion ring of light 26 is mounted on this installed part 24, and so, this expansion ring of light 26 is just arranged on this exiting surface 224.Because this annular groove 228 is centrosymmetric with the axis O of this expansion optical lens 22, this expansion ring of light 26 is also centrosymmetric with the axis O of this expansion optical lens 22.The outer surface of this expansion ring of light 26 can by light reflection.In present embodiment, between this expansion ring of light 26 and this exiting surface 224, there is certain distance, distance between this expansion ring of light 26 and this exiting surface 224 can adjust according to the different condition of light to this expansion optical lens 22, more even by illuminance after the reflection of this expansion ring of light 26 one way or another to enable from the light of this exiting surface 224 outgoing.In present embodiment, this expansion ring of light 26 is that the annular base material be made at polymethyl methacrylate plates the formation of one deck reflectance coating.Be understandable that, other structure that this expansion ring of light 26 adopts outer surface to have reflex also can.
When this light-emitting device 100 works, the light sent by light source 10 is incident to this expansion optical lens 22 from this incidence surface 222, and from this exiting surface 224 outgoing.From the light of this exiting surface 224 outgoing, a part is incident to this expansion ring of light 26, and the light being incident to this expansion ring of light 26 is reflected by this expansion ring of light 26 one way or another, to make the illuminance of the light from this light-emitting device 100 outgoing even.As shown in Figure 5, this light-emitting device 100 provided for first embodiment of the invention go out illuminance figure, more known, the illuminance of the light of this light-emitting device 100 outgoing is more even than the illuminance (as shown in Figure 1) of the light of light-emitting device outgoing of the prior art.
Refer to Fig. 6, the backlight module 200 that second embodiment of the invention provides comprises light-emitting device 100 in the first embodiment and a diffuser plate 50.The concrete structure of this light-emitting device 100 does not repeat them here.
This diffuser plate 50 comprises a plane of incidence 52 and an exit facet 54.This plane of incidence 52 lays respectively at the opposing both sides of this diffuser plate 50 with this exit facet 54, and this plane of incidence 52 is parallel with this exit facet 54.This diffuser plate 50 is positioned at the side that this expansion optical lens 22 deviates from this light source 10, and namely this diffuser plate 50 is positioned at the side at exiting surface 224 place of this expansion optical lens 22.This plane of incidence 52 is relative with this exiting surface 224.Be incident to this diffuser plate 50 by the light of this light-emitting device 100 outgoing via this plane of incidence 52 and dispersed further by this diffuser plate 50.
Backlight module 200 provided by the invention adopts this light-emitting device 100, this light-emitting device 100 is installed one and is expanded the light that the ring of light 26 makes to be incident to this expansion ring of light 26 and reflected by this expansion ring of light 26 one way or another on the exiting surface 224 of this expansion optical lens 22, so, make from the diffusion of the light of this light-emitting device 100 outgoing even, and then make the uniform light of this backlight module 200 outgoing.
Although the present invention discloses detailed description of the invention; but it is also not used to limit the present invention; any those skilled in the art; equivalent structure done under the prerequisite not departing from the spirit and scope of the present invention or the displacement of step; or the equivalent variations to do according to scope of patent protection of the present invention and modification, all still should belong to the category that this patent is contained.
Claims (9)
1. a light-emitting device, comprise light source and expand light unit, its improvement is, this expansion light unit comprises expansion optical lens and expands the ring of light, this expansion optical lens comprises incidence surface, exiting surface and side, and this side connects this incidence surface and this exiting surface, and this incidence surface offers towards the recessed accommodating cavity of this exiting surface, this light source is positioned at this accommodating cavity, and this expansion ring of light to be arranged on this exiting surface and corresponding to this light source will to send from this light source and some light one way or another through this expansion optical lens outgoing reflects.
2. light-emitting device as claimed in claim 1, it is characterized in that, this exiting surface is provided with an annular groove, this annular groove is centrosymmetric with the axis of this expansion optical lens, and this expansion ring of light is arranged on this annular groove.
3. light-emitting device as claimed in claim 2, is characterized in that, this expansion ring of light is circular along the cross section in the direction, axis of this expansion optical lens.
4. light-emitting device as claimed in claim 2, it is characterized in that, this light-emitting device also comprises an installed part, this installed part is annular, this installed part is inserted into this annular groove and a part for this installed part protrudes from this annular groove, and this part of this installed part offers multiple bayonet socket, and the periphery of this expansion ring of light is provided with multiple card column, this expansion ring of light is arranged on this installed part, and the plurality of card column is fastened in the plurality of bayonet socket respectively.
5. light-emitting device as claimed in claim 4, it is characterized in that, this expansion optical lens and this installed part adopt identical material to be made.
6. light-emitting device as claimed in claim 1, is characterized in that, this expansion optical lens adopts polymethyl methacrylate to be made.
7. light-emitting device as claimed in claim 1, is characterized in that, this expansion ring of light is that the annular base material be made at polymethyl methacrylate plates one deck reflectance coating and is made.
8. light-emitting device as claimed in claim 1, it is characterized in that, this light source is LED source.
9. a backlight module, comprise a light-emitting device as described in claim 1 to 8 any one and a diffuser plate, this diffuser plate is positioned at the side that this expansion optical lens deviates from this light source, and this diffuser plate is aimed at this expansion optical lens for receiving and dispersing the light sent by this light-emitting device further.
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 true CN104676350A (en) | 2015-06-03 |
| CN104676350B 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 (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6582103B1 (en) * | 1996-12-12 | 2003-06-24 | Teledyne Lighting And Display Products, Inc. | Lighting apparatus |
| US20060023452A1 (en) * | 2004-07-28 | 2006-02-02 | Kuo-Yen Lai | Scanning illumination module |
| 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 |
-
2013
- 2013-11-27 CN CN201310609924.7A patent/CN104676350B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6582103B1 (en) * | 1996-12-12 | 2003-06-24 | Teledyne Lighting And Display Products, Inc. | Lighting apparatus |
| US20060023452A1 (en) * | 2004-07-28 | 2006-02-02 | Kuo-Yen Lai | Scanning illumination module |
| 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 |
|---|---|
| CN104676350B (en) | 2018-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106291896B (en) | Optical lens and backlight module | |
| US8267565B2 (en) | LED illumination device and LED illumination module for generating uniform stripped light source | |
| CN103471009A (en) | Novel LED lens and liquid crystal display backlight screen | |
| CN104121545A (en) | Optical lens and light source device | |
| TW201643341A (en) | Lens, light emitting device, and backlight module | |
| US20140177235A1 (en) | Optical lens and lighting device having the same | |
| TWI589964B (en) | Light emitting device and backlight module | |
| US20150277024A1 (en) | Display device | |
| CN104423092A (en) | Straight down type backlight module and liquid crystal display device | |
| US8444301B2 (en) | Lens and illumination device | |
| CN104235758B (en) | Lens, the light-guiding shade with the lens and the lighting device using the lens | |
| CN104676357A (en) | Light-emitting device and backlight module | |
| US20170284611A1 (en) | Projection light source structure with bat-wing candle power distribution | |
| US9829175B2 (en) | Optical lens, backlight module and display device | |
| US9134476B2 (en) | LED module with light guiding plate | |
| CN104676350A (en) | Light-emitting device and backlight module | |
| US8684585B2 (en) | Illumination device and lens thereof | |
| US20150109818A1 (en) | Backlight module | |
| US9416943B2 (en) | Light-emitting device and backlight module having the light-emitting device therein | |
| CN210662723U (en) | Light guide tube and light distribution system for USB (universal serial bus) socket | |
| US9270874B2 (en) | Mobile telephone | |
| CN103968294A (en) | Backlight module and light guide plate thereof | |
| CN108131609B (en) | Backlight module | |
| CN109027737B (en) | Lens, lamp strip, backlight unit and display device | |
| CN102116454A (en) | Light guide plate and backlight module using same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| 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. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180511 Termination date: 20181127 |