CN207263952U - A kind of refraction type backlight lens - Google Patents
A kind of refraction type backlight lens Download PDFInfo
- Publication number
- CN207263952U CN207263952U CN201720570986.5U CN201720570986U CN207263952U CN 207263952 U CN207263952 U CN 207263952U CN 201720570986 U CN201720570986 U CN 201720570986U CN 207263952 U CN207263952 U CN 207263952U
- Authority
- CN
- China
- Prior art keywords
- blind hole
- base station
- type backlight
- refraction type
- free form
- 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
Abstract
The utility model discloses a kind of refraction type backlight lens, including circular base station, the lower surface of the base station is provided with base station and extends internally blind hole, the inner surface of the blind hole is the plane of incidence, the upper surface of base station upwardly extends one center of shaping and raises up to form the free form surface boss of arc bump, formed with bending position between the surface of arc convex and free form surface boss, the bending position is towards 15 millimeters of base station inner recess, the lower surface of base station is equipped with some tapered blind holes, the depth of the tapered blind hole is less than the depth of blind hole, and each tapered blind hole is set around blind hole, blind hole is arranged on the central area of base station, the inner surface of free form surface boss is equipped with several spaced curved protrusions, the curved protrusion is arranged on the both sides of arc bump.The utility model effectively increases the uniformity of light extraction.
Description
Technical field
A kind of lens are the utility model is related to, specifically a kind of refraction type back of the body for being mainly used for down straight aphototropism mode set
Optical lens.
Background technology
LED (light emitting diode) arrange in pairs or groups lens and the composition such as diffuser plate, bright enhancement film directly-down liquid crystal backlight module due to
Its is energy saving, and service life length, assembling is easy to maintain, and of low cost, the good advantage of color representation is in LCD TV and liquid crystal
Widely used in display screen and plate lighting lamps and lanterns.LED direct-type backlights have surmounted CCFL cold-cathode tubes and LED side entering types
Backlight becomes the first choice of the said goods, market demand sustainable growth.But as consumer is to LCD screen and liquid crystal electricity
Depending on lightening requirement, and TV, cost control (be greatly reduced LED quantity) of the screen complete-system vendor to backlight module
It is required that existing LED direct-type backlights are increasingly difficult to meet the requirement of complete-system vendor.Its lens used, to light
Refraction effect is not scattered enough and uniform.
The content of the invention
The technical problem to be solved by the present invention is to provide a kind of refraction type backlight lens, light extraction is more uniform, improves
Light extraction efficiency.
In order to solve the above-mentioned technical problem, the utility model takes following technical scheme：
A kind of refraction type backlight lens, including circular base station, the lower surface of the base station are provided with prolonging inside base station
The polygon-shaped blind hole stretched, the inner surface of the blind hole is the plane of incidence, and the upper surface of base station upwardly extends one center of shaping
Raise up to form the free form surface boss of arc bump, formed with bending between arc convex and the surface of free form surface boss
Position, the bending position are equipped with some tapered blind holes towards 1-5 millimeters of base station inner recess, the lower surface of base station, the tapered blind hole
Depth is less than the depth of blind hole, and each tapered blind hole is set around blind hole, if the inner surface of free form surface boss is equipped with
Dry spaced curved protrusion, the curved protrusion are arranged on the both sides of arc bump.
The width of the arc bump is more than the maximum width of blind hole.
The blind hole is located at the central area of base station.
Spacing distance between two adjacent curved protrusions is more than the width of the curved protrusion.
The height of the two neighboring curved protrusion differs.
The lower surface of the base station is equipped with supporting pins.
The utility model utilizes polygon-shaped blind hole, improves the refraction angle of light, and using in free form surface boss
The curved protrusion in portion and the arc bump at middle part, form repeatedly refraction, make light distribution more uniform, irradiate on the screen more
Add full, strengthen the irradiation brightness of light.
Brief description of the drawings
Attached drawing 1 is the utility model dimensional structure diagram；
Attached drawing 2 is the utility model section structure diagram；
Attached drawing 3 is the utility model light-out effect schematic diagram.
Embodiment
For that can further appreciate that the feature of the utility model, technological means and the specific purposes reached, function, below
The utility model is described in further detail with embodiment with reference to attached drawing.As shown in figure 1 and 2, the utility model
A kind of refraction type backlight lens for being mainly used for liquid crystal display die set, including circular base station 1 are disclosed, under the base station 1
Surface is provided with base station and extends internally polygon-shaped blind hole 3, and the inner surface of the blind hole 3 is the plane of incidence, the upper surface of base station 1
Upwardly extend one center of shaping to raise up to form the free form surface boss 5 of arc bump 6, arc convex 6 and freedom
Formed with bending position between the surface of curved surface boss 5, the bending position is towards 1-5 millimeters of base station inner recess, the lower surface of base station 1
Equipped with some tapered blind holes 2, the depth of the tapered blind hole is less than the depth of blind hole, and each tapered blind hole is set around blind hole
Put, the inner surface of free form surface boss 5 is equipped with several spaced curved protrusions 7, and it is convex which is arranged on arc
The both sides of block 6.The both sides of arc bump set the curved protrusion of identical quantity.Light enters from blind hole, and blind hole is polygon
Shape, such as pentagon, hexagon or other polygons, there are the change of curvature and curved surface normal direction, incident light can in blind hole into
Row refraction, the light through superrefraction is reflected again by the curved protrusion in free form surface boss again, then convex from free form surface again
The surface of platform reflects again, forms repeatedly refraction, forms more uniform hot spot.
In addition, the width of arc bump is more than the maximum width of blind hole.Blind hole is located at the central area of base station.Adjacent two
Spacing distance between a curved protrusion is more than the width of the curved protrusion.
Moreover, the height of the two neighboring curved protrusion differs, the refraction of different angle is formed.
The lower surface of the base station 1 is equipped with supporting pins 4, convenient for assembly.
In the utility model, light enters from blind hole, is reflected on the surface of blind hole, freedom of entry curved surface boss
In, then a part of light directly outwards projects after the surface of free form surface boss reflects again.A part of light is mapped to certainly
By being reflected away after the arc convex in curved surface boss.One branch's light is mapped to the curved protrusion in free form surface boss, at this
The surface of free form surface boss is mapped to after first being reflected in curved protrusion again, is outwards projected after then being reflected again.From
And light is caused by repeatedly refraction, to obtain more uniform hot spot.
It should be noted that these are only the preferred embodiment of the utility model, it is new to be not limited to this practicality
Type, although the utility model is described in detail with reference to embodiment, for those skilled in the art, it is still
It can modify to the technical solution described in previous embodiment, or equivalent substitution is carried out to which part technical characteristic,
But where within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on, should be included in
Within the scope of protection of the utility model.
Claims (6)
1. a kind of refraction type backlight lens, including circular base station, it is characterised in that the lower surface of the base station is provided with base
Platform extends internally polygon-shaped blind hole, and the inner surface of the blind hole is the plane of incidence, and the upper surface of base station upwardly extends shaping one
Center raises up to form the free form surface boss of arc bump, shape between arc convex and the surface of free form surface boss
Into there is bending position, which is equipped with some tapered blind holes, the cone towards 1-5 millimeters of base station inner recess, the lower surface of base station
The depth of shape blind hole is less than the depth of blind hole, and each tapered blind hole is set around blind hole, the interior table of free form surface boss
Face is equipped with several spaced curved protrusions, which is arranged on the both sides of arc bump.
2. refraction type backlight lens according to claim 1, it is characterised in that the width of the arc bump is more than blind hole
Maximum width.
3. refraction type backlight lens according to claim 2, it is characterised in that the blind hole is located at the center of base station
Domain.
4. refraction type backlight lens according to claim 3, it is characterised in that between two adjacent curved protrusions
Spacing distance be more than the curved protrusion width.
5. refraction type backlight lens according to claim 4, it is characterised in that the height of the two neighboring curved protrusion
Differ.
6. refraction type backlight lens according to claim 5, it is characterised in that draw equipped with support the lower surface of the base station
Foot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720570986.5U CN207263952U (en) | 2017-05-22 | 2017-05-22 | A kind of refraction type backlight lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720570986.5U CN207263952U (en) | 2017-05-22 | 2017-05-22 | A kind of refraction type backlight lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207263952U true CN207263952U (en) | 2018-04-20 |
Family
ID=61915071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720570986.5U Expired - Fee Related CN207263952U (en) | 2017-05-22 | 2017-05-22 | A kind of refraction type backlight lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207263952U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820764A (en) * | 2021-08-27 | 2021-12-21 | 广东烨嘉光电科技股份有限公司 | Preparation method of direct type backlight lens |
-
2017
- 2017-05-22 CN CN201720570986.5U patent/CN207263952U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820764A (en) * | 2021-08-27 | 2021-12-21 | 广东烨嘉光电科技股份有限公司 | Preparation method of direct type backlight lens |
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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: 20180420 Termination date: 20190522 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |