CN206449591U - A kind of light source lens - Google Patents
A kind of light source lens Download PDFInfo
- Publication number
- CN206449591U CN206449591U CN201720077926.XU CN201720077926U CN206449591U CN 206449591 U CN206449591 U CN 206449591U CN 201720077926 U CN201720077926 U CN 201720077926U CN 206449591 U CN206449591 U CN 206449591U
- Authority
- CN
- China
- Prior art keywords
- locating dowel
- lens body
- top surface
- positioning column
- upper positioning
- 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
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Abstract
The utility model discloses a kind of light source lens, including lens body and flange, caveli is provided with the middle part of the bottom surface of lens body upwards, the section of caveli is in half elliptic, the major diameter of wherein half elliptic is arranged along light direction, there is downward depressed part, the bottom of depressed part is wedge angle in the middle part of the top surface of lens body；The projection of more than four arranged in array type is provided with the bottom surface of lens body, projection is with top surface and the four triangular facets composition for converging to a bit downwards from top surface, and top surface is square；Provided with the circumferentially uniform locating dowel of more than three on flange, described locating dowel includes upper positioning column and lower locating dowel, upper positioning column is connected on the bottom surface of flange, and lower locating dowel is connected in upper positioning column, and the diameter of lower locating dowel is less than the diameter of upper positioning column.Using structure of the present utility model, uniform in light emission and efficiency high.
Description
Technical field
The utility model is related to lens.
Background technology
Backlight module is one of key part and component of panel of LCD.Function is well-off brightness and distribution
Uniform light source, can normally show image.
Backlight module mainly has a down straight aphototropism mode set and side entrance back module, the light of down straight aphototropism mode set directly to
Preceding export, for backlight module, it is desirable to have backlight in suitable brightness and uniform light extraction, backlight module general by
Multiple lamp bar compositions, are provided with multiple LED lamp beads and lens in lamp bar, therefore, easily form dark between adjacent LED lamp bead
Area, causes light extraction uneven.Lens in use, if the structure used is incorrect, easily cause light extraction uneven
Phenomenon.
The content of the invention
In order to improve light-emitting uniformity and light extraction efficiency, the utility model provides a kind of light source lens.
To reach above-mentioned purpose, a kind of light source lens, including lens body and from lens body lower edge to extension
Caveli is provided with the middle part of the flange stretched, the bottom surface of lens body upwards, the section of caveli is in half elliptic, wherein half elliptic
Major diameter arrange that the major diameter of half elliptic is 6-6.8mm, and the minor axis of half elliptic is 3.5-3.9mm, lens along light direction
There is downward depressed part, the bottom of depressed part is wedge angle in the middle part of the top surface of body；It is provided with the bottom surface of lens body in display
The projection of more than four of formula arrangement, projection is with top surface and the four triangular facets composition for converging to a bit downwards from top surface, top
Face is square；Provided with the circumferentially uniform locating dowel of more than three on flange, described locating dowel includes upper positioning column
With lower locating dowel, upper positioning column is connected on the bottom surface of flange, and lower locating dowel is connected in upper positioning column, the diameter of lower locating dowel
Less than the diameter of upper positioning column；The bottom surface of lens body to the gap between substrate be 0.5-0.7mm；Lens body basal diameter
For 14-15mm, the height of lens body is 4.5-4.6mm；The top of caveli to wedge angle height be 3.1-3.3mm；It is raised
The length of side of top surface is 0.8-0.9mm, and raised height is 0.2-0.3mm, and the distance between the wedge angle of adjacent protrusion is 0.9-
1.1mm。
Said structure, due to being provided with projection, using caveli of the present utility model and depressed part and using above-mentioned
Mirror structure, so, the light of LED lamp bead can be projected more by reflection and refraction, and light is not easy to project from side, so as to improve
Light extraction efficiency and light-emitting uniformity.Locating dowel above and below due to being provided with, can realize the radial positioning of lens, and upper positioning column can be entered
Row axial limiting, facilitates mounted lens.
Further, the small upper taper type beaten under upper positioning column is, lower locating dowel small upper taper type beaten under being.Installing
During lens, with moving downward for lower locating dowel, lower locating dowel contact with the hole on substrate is closer, and realization is accurately positioned.
Brief description of the drawings
Fig. 1 is the schematic diagram of direct-light-type backlight.
Fig. 2 is the schematic diagram of substrate.
Fig. 3 is the schematic diagram of LED lamp bead.
Fig. 4 is the stereogram of lens.
Fig. 5 is lens top view.
Fig. 6 is the upward view of lens.
Fig. 7 is A-A sectional views in Fig. 6.
Fig. 8 is B-B sectional views in Fig. 6.
Embodiment
The utility model is further elaborated with reference to the accompanying drawings and detailed description.
As shown in figure 1, direct-light-type backlight includes substrate 31, sets LED lamp bead 32 on the substrate 31 and be located at LED lamp bead
The lens 33 in 32 fronts.
As shown in Fig. 2 described substrate 31 includes FR4 intermediate layers 311, is located at the layers of copper 312 of the bottom surface of FR4 intermediate layers 311
With the circuit layer 313 for being located at FR4 intermediate layers top surface.Accommodating cavity is provided with the bottom surface in FR4 intermediate layers 311, layers of copper 312 is located at accommodating
Intracavitary.Realize the positioning to layers of copper, and the fixation of layers of copper.For FR4 intermediate layers 311, it has certain lead
Heat energy power, but heat do not allow it is easy to lose, due to being provided with layers of copper, therefore, LED lamp bead produce heat through FR4 intermediate layers import
To layers of copper, pass through layers of copper quick heat radiating.
As shown in figure 3, described LED lamp bead 32 includes support 321, the chip 322 being located in support 321 and is encapsulated in core
Fluorescent glue 323 on piece.
As shown in Fig. 4 to Fig. 8, described lens 33 include lens body 331 and from lens body lower edge to extension
The flange 332 stretched.
The basal diameter D of lens body 331 is 14-15mm, and the height H of lens body is 4.3-4.5mm.
Caveli 333 is provided with the middle part of the bottom surface of lens body 331 upwards, the section of caveli 333 is in half elliptic, wherein
The major diameter of half elliptic arranges that the major diameter of half elliptic is 6-6.8mm, and the minor axis of half elliptic is 3.5- along light direction
3.9mm.There is downward depressed part 334, the bottom of depressed part is wedge angle 3341 in the middle part of the top surface of lens body；Caveli 333
Top to wedge angle 3341 height h be 3.1-3.3mm.
Annular groove 30 is provided with the bottom of lens body 331, in annular groove 30.In the bottom surface of lens body and the bottom of flange
Face is provided with salient point 300.Bottom surface be provided with projection 335 of more than four arranged in array type, it is raised with top surface and Zi Ding
Four triangular facets 3351 for converging to a bit downwards are constituted, and top surface is square；The length of side L of raised top surface is 0.8-0.9mm, convex
The height h1 risen is 0.2-0.3mm, and the distance between the wedge angle of adjacent protrusion a is 0.9-1.1mm.
Provided with the circumferentially uniform locating dowel 336 of more than three on flange 332, described locating dowel 336 includes
Upper positioning column 3361 and lower locating dowel 3362, upper positioning column is connected on the bottom surface of flange, and lower locating dowel is connected to upper positioning column
On, the diameter of lower locating dowel is less than the diameter of upper positioning column；Upper positioning column small upper taper type beaten under being, lower locating dowel is small under being
The upper taper type beaten, the taper of upper positioning column 3361 is 1 °, and the taper of lower locating dowel 3362 is 2 °.In mounted lens, with
Lower locating dowel is moved downward, and lower locating dowel contact with the hole on substrate is closer, realization is accurately positioned.
The bottom surface of lens body to the gap between substrate be 0.5-0.7mm.
Said structure, because the bottom surface of lens body to the distance between substrate is 0.5-.07mm, relative distance reduces,
So, lens are allowed to increase to the distance between light guide plate is relative, on the basis of identical rising angle, the hot spot on light guide plate
It is bigger, so, it is not easy dark space occur between adjacent LED lamp bead, makes light extraction more uniform.Due to be provided with it is raised,
Using caveli of the present utility model and depressed part, so, the light of LED lamp bead can be projected more by reflection and refraction, light
It is not easy to project from side, so as to improve light extraction efficiency.Locating dowel above and below due to being provided with, lower locating dowel is inserted into substrate
It is interior, radial positioning is realized, upper positioning column can carry out axial limiting, facilitate mounted lens.In the utility model, LED lamp bead pair
Caveli.
Claims (2)
1. a kind of light source lens, including lens body and outward extended flange from lens body lower edge, lens body
Bottom surface in the middle part of upwards be provided with caveli, it is characterised in that：The section of caveli is in the major diameter of half elliptic, wherein half elliptic
Arranged along light direction, the major diameter of half elliptic is 6-6.8mm, and the minor axis of half elliptic is 3.5-3.9mm, lens body
There is downward depressed part, the bottom of depressed part is wedge angle in the middle part of top surface；It is provided with the bottom surface of lens body in array type arrangement
The projection of more than four, projection with top surface and converged to downwards from top surface any four triangular facets composition, top surface for side
Shape；Provided with the circumferentially uniform locating dowel of more than three on flange, described locating dowel includes upper positioning column and lower fixed
Position post, upper positioning column is connected on the bottom surface of flange, and lower locating dowel is connected in upper positioning column, and the diameter of lower locating dowel is less than upper
The diameter of locating dowel；The bottom surface of lens body to the gap between substrate be 0.5-0.7mm；Lens body basal diameter is 14-
15mm, the height of lens body is 4.5-4.6mm；The top of caveli to wedge angle height be 3.1-3.3mm；Raised top surface
The length of side is 0.8-0.9mm, and raised height is 0.2-0.3mm, and the distance between the wedge angle of adjacent protrusion is 0.9-1.1mm.
2. light source lens according to claim 1, it is characterised in that：Upper positioning column small upper taper type beaten under being, under
Locating dowel small upper taper type beaten under being.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720077926.XU CN206449591U (en) | 2017-01-22 | 2017-01-22 | A kind of light source lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720077926.XU CN206449591U (en) | 2017-01-22 | 2017-01-22 | A kind of light source lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206449591U true CN206449591U (en) | 2017-08-29 |
Family
ID=59667002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720077926.XU Expired - Fee Related CN206449591U (en) | 2017-01-22 | 2017-01-22 | A kind of light source lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206449591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991807A (en) * | 2017-12-07 | 2018-05-04 | 苏州奥浦迪克光电技术有限公司 | The backlight module of backlight module lens and its composition |
-
2017
- 2017-01-22 CN CN201720077926.XU patent/CN206449591U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991807A (en) * | 2017-12-07 | 2018-05-04 | 苏州奥浦迪克光电技术有限公司 | The backlight module of backlight module lens and its composition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170829 Termination date: 20190122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |