CN104566216B - A kind of asymmetric LED street lamp lens - Google Patents
A kind of asymmetric LED street lamp lens Download PDFInfo
- Publication number
- CN104566216B CN104566216B CN201410848973.0A CN201410848973A CN104566216B CN 104566216 B CN104566216 B CN 104566216B CN 201410848973 A CN201410848973 A CN 201410848973A CN 104566216 B CN104566216 B CN 104566216B
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- China
- Prior art keywords
- lens
- street lamp
- led street
- free form
- axis direction
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Classifications
-
- 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
- F21V5/043—Refractors for light sources of lens shape the lens having cylindrical faces, e.g. rod lenses, toric lenses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/103—Outdoor lighting of streets or roads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2101/00—Point-like light sources
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The present invention discloses a kind of asymmetric LED street lamp lens, lens along central minor axis direction be in symmetry, and along central longitudinal axis direction be in asymmetry；The lens include basal plane and exiting surface, and the central fovea of the basal plane is provided with the plane of incidence that a depression forms lens；The exiting surface is the free form surface for the discontinuous transition being made up of at least two panels free form surface along the connection of central longitudinal axis direction, and at least two panels free form surface is the same side inclination along central minor axis direction.Lens provided by the invention can optimize luminous intensity distribution to LED light source, when LED street lamp installs the lens, under without elevation angle mounting means, being emitted to the light of driveway can increase, being emitted to the light on pavement can be reduced, dazzle is greatly lowered and improves utilization ratio of optical energy, there is good application prospect in road lighting field.
Description
Technical field
The invention belongs to optical design arts, and in particular to a kind of asymmetric LED street lamp lens.
Background technology
LED has luminous efficiency high, and stability is good, the features such as long lifespan, is widely used in indoor and outdoor lighting light fixture.Especially
It generally instead of conventional high-tension sodium vapor lamp in road lighting field, LED street lamp.Due to most of LED street lamp road lighting
The illuminance uniformity on road surface is laid particular emphasis on, often have ignored the road surface brightness uniformity being closely related with human eye vision, luminous environment will
Summation dazzle threshold limit increment, therefore " zebra effect " and dazzle are easily produced, there is certain road safety hidden danger.Together
When, the illumination of traditional LED street lamp often uses the optical lens of symmetry distribution, and its distribution curve flux is in symmetry, and the one of light energy
Partly it is radiated on bicycle lane, causes " light waste ", greatly reduces the capacity usage ratio and energy-saving effect of LED street lamp.
The illumination of traditional LED street lamp in order that more light irradiations on road, light fixture need when mounted with road level line in 10 °-
20 ° of the elevation angle, capacity usage ratio could be improved, but the dazzle that the bigger human eye in the elevation angle is experienced is more serious.
The content of the invention
It is an object of the invention to provide a kind of asymmetric LED street lamp lens, to solve " spot present in prior art
Horse effect ", dazzle and the problems such as capacity usage ratio is low.
In order to reach above-mentioned purpose, solution of the invention is：
A kind of asymmetric LED street lamp lens, lens along central minor axis direction be in symmetry, and along central longitudinal axis side
To in asymmetry；The lens include basal plane and exiting surface, and the central fovea of the basal plane is provided with the plane of incidence that a depression forms lens；
The exiting surface is the free form surface of discontinuous transition being made up of at least two panels free form surface along the connection of central longitudinal axis direction, institute
It is the same side inclination along central minor axis direction to state at least two panels free form surface.
The plane of incidence of the lens is hemisphere face, half ellipsoidal surface or free form surface.
The piece number scope of at least two panels free form surface is 2-50 pieces.
Connected between every adjacent two free form surface of at least two panels free form surface by curved surface boundary line plane.
The mounting base being connected with lens week edge is additionally provided with the lens.
The small circular support for positioning or buckle lens is additionally provided with the bottom surface of the mounting base.
The lens are molded by PMMA or glass material or injection moulding.
After such scheme, the present invention is relative to the beneficial effect of prior art：It is saturating that LED street lamp of the present invention is installed
During mirror, the inclined side of corresponding free form surface of lens is set by road direction, and it is saturating that LED light source is placed on LED street lamp of the present invention
In the depression of mirror, emergent ray is after the plane of incidence of lens, from the emergent ray of exiting surface outgoing toward road direction deviation,
Most of light can be incident upon on driveway by LED street lamp without the elevation angle, and form the rectangular light spot of brightness uniformity, significantly
Dazzle and the influence of zebra effect are reduced, reduces road traffic hidden danger, while improve the capacity usage ratio and road of LED street lamp
Road lighting quality.Lens of the present invention have the characteristics that low dazzle and high-energy utilization rate, have good industrialization prospect.
Brief description of the drawings
Fig. 1 is the stereogram of the asymmetric LED street lamp lens of this case；
Fig. 2 is the top view of the asymmetric LED street lamp lens of this case；
Fig. 3 be in Fig. 2 along X-X to diagrammatic cross-section；
Fig. 4 be in Fig. 2 along Y-Y to diagrammatic cross-section；
Fig. 5 is the X-X of the asymmetric LED street lamp lens of this case to section emergent ray route schematic diagram；
Fig. 6 is the X-X of the asymmetric LED street lamp lens of this case to section emergent ray route schematic diagram；
Fig. 7 is the surface of intensity distribution of the asymmetric LED street lamp lens of this case in embodiment；
Fig. 8 is the Illumination Distribution figure on road lighting region in embodiment.
Label declaration
The plane of incidence 2 of basal plane 1
The free form surface 31 of exiting surface 3
The mounting base 4 of curved surface boundary line plane 32
LED light source 5
Embodiment
This case is described in further detail with reference to the accompanying drawings and detailed description.
This case is related to a kind of asymmetric LED street lamp lens, and as Figure 1-4, the lens include basal plane 1, the and of the plane of incidence 2
Exiting surface 3.Lens are molded by PMMA or glass material or injection moulding.
The basal plane 1 of lens is the bottom surface of lens, and its center is arranged with a depression to form the plane of incidence 2 of the lens.Institute
Depression is stated to be used to place LED light source 5, the LED light source 5 can be single high-power chip LED light source or multiple chips it is integrated
LED light source.The plane of incidence 2 of lens can be hemisphere face, half ellipsoidal surface or free form surface, and the diameter range of the plane of incidence 2 can be with
For 1-50mm, preferably a diameter of 3mm.
The exiting surface 3 of lens is the free form surface of discontinuous transition, and the free form surface of the discontinuous transition is by least two panels
Free form surface 31 forms along central longitudinal axis direction (in figure X-X to) connection, i.e., described at least two panels free form surface 31 grown along center
Direction of principal axis is arranged side by side.Connected mode between per adjacent two panels free form surface 31 is used by 32 discontinuous mistake of curved surface boundary line plane
Cross connection.In other words, the exiting surface 3 of lens is made up of at least two panels free form surface 31 and adaptable curved surface boundary line plane 32.
The piece number scope of at least two panels free form surface 31 is preferably 2-50 pieces, and the piece number for providing free form surface 31 in embodiment is 16
Piece.At least two panels free form surface 31 is to tilt (evagination) along the same side of central minor axis direction (in figure Y-Y to), referring to
Shown in Fig. 2, Fig. 4.In this, the asymmetric LED street lamp lens of the invention of composition, its along central minor axis direction be in symmetry,
And along central longitudinal axis direction be in asymmetry.
The asymmetric LED street lamp lens of the present invention are arranged on the top of LED light source 5, provide as seen in figs. 5-6 in embodiment,
LED light source 5 is single high-power chip, and for its light sent after the plane of incidence 2, the light in Y-Y sections passes through exiting surface
3, emergent ray toward road direction deviation, Section X-X light by exiting surface 3, emergent ray spreads toward both sides, in this shape
Into the rectangular light spot of deviation driveway brightness uniformity.Such as Fig. 7-8, to provide the asymmetric LED street lamp of this case in embodiment respectively saturating
Illumination Distribution figure on the surface of intensity distribution and road lighting region of mirror.0 ° of plane of light distribution of lens is in pair with 180 ° of planes
Type and maximum lighting angle are referred to as 140 °, and 90 ° of planes are 60 ° in asymmetric and maximum lighting angle with 270 ° of planes.Pass through
The LED street lamp of array lens of the present invention and LED light source composition, LED street lamp can project light on road surface without the elevation angle, shape
Into the road lighting effect of low dazzle high-energy utilization rate.
It is preferred that the mounting base 4 for being connected with or being integrally formed on lens week edge is additionally provided with the lens, in order to saturating
The location and installation of mirror.Mounting base 4 can be rectangle or ellipse, and thickness scope is 0.1-10mm, provides implementation
Thickness is 1.5mm in example.Further, the bottom surface of mounting base 4 is also provided with small circular support (not shown), in favor of
Positioning or buckle lensing.
The foregoing is only the preferred embodiments of the present invention, all equivalent changes done with scope of the invention as claimed and
Modification, the scope of the claims in the present invention all should be belonged to.
Claims (6)
- A kind of 1. asymmetric LED street lamp lens, it is characterised in that：Lens along central minor axis direction be in symmetry, and along Central longitudinal axis direction is in asymmetry；The lens include basal plane and exiting surface, and the central fovea of the basal plane is provided with a depression and formed thoroughly The plane of incidence of mirror；The exiting surface is the discontinuous transition being made up of at least two panels free form surface along the connection of central longitudinal axis direction Free form surface, at least two panels free form surface are the same side inclination along central minor axis direction；At least two panels is free Connected between every adjacent two free form surface of curved surface by curved surface boundary line plane.
- A kind of 2. asymmetric LED street lamp lens as claimed in claim 1, it is characterised in that：The plane of incidence of the lens is Hemisphere face, half ellipsoidal surface or free form surface.
- A kind of 3. asymmetric LED street lamp lens as claimed in claim 1, it is characterised in that：At least two panels is freely bent The piece number scope in face is 2-50 pieces.
- A kind of 4. asymmetric LED street lamp lens as claimed in claim 1, it is characterised in that：The company of being additionally provided with the lens It is located at the mounting base on lens week edge.
- A kind of 5. asymmetric LED street lamp lens as claimed in claim 4, it is characterised in that：The bottom surface of the mounting base On be additionally provided with for position or buckle lens small circular support.
- A kind of 6. asymmetric LED street lamp lens as claimed in claim 1, it is characterised in that：The lens are by PMMA or glass Glass material is molded or injection moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848973.0A CN104566216B (en) | 2014-12-31 | 2014-12-31 | A kind of asymmetric LED street lamp lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848973.0A CN104566216B (en) | 2014-12-31 | 2014-12-31 | A kind of asymmetric LED street lamp lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104566216A CN104566216A (en) | 2015-04-29 |
| CN104566216B true CN104566216B (en) | 2018-01-16 |
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ID=53082922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410848973.0A Active CN104566216B (en) | 2014-12-31 | 2014-12-31 | A kind of asymmetric LED street lamp lens |
Country Status (1)
| Country | Link |
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| CN (1) | CN104566216B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023025605A1 (en) * | 2021-08-23 | 2023-03-02 | Signify Holding B.V. | Modulated linear lens |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627251B (en) * | 2015-11-30 | 2019-01-08 | 中山大学 | A kind of compatibility street lamp lens |
| CN107687603A (en) * | 2017-09-01 | 2018-02-13 | 广东技术师范学院 | A kind of street lamp based on combined reflecting surface |
| CN113985651A (en) * | 2021-10-19 | 2022-01-28 | 深圳创维－Rgb电子有限公司 | Uniform light lens and backlight module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202253370U (en) * | 2011-08-26 | 2012-05-30 | 深圳市百康光电有限公司 | Lens for LED wash wall lamp |
| CN102966914A (en) * | 2011-08-30 | 2013-03-13 | 三星电子株式会社 | Asymmetric type lens and street lamp including the same |
| CN203464128U (en) * | 2013-08-30 | 2014-03-05 | 安徽湛蓝光电科技有限公司 | High beam optical system of LED (Light-Emitting Diode) automotive headlamp |
| CN204345531U (en) * | 2014-12-31 | 2015-05-20 | 华侨大学 | A kind of asymmetric LED street lamp lens |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2737246A1 (en) * | 2011-07-25 | 2014-06-04 | OSRAM GmbH | A light source, for example for lighting surfaces |
-
2014
- 2014-12-31 CN CN201410848973.0A patent/CN104566216B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202253370U (en) * | 2011-08-26 | 2012-05-30 | 深圳市百康光电有限公司 | Lens for LED wash wall lamp |
| CN102966914A (en) * | 2011-08-30 | 2013-03-13 | 三星电子株式会社 | Asymmetric type lens and street lamp including the same |
| CN203464128U (en) * | 2013-08-30 | 2014-03-05 | 安徽湛蓝光电科技有限公司 | High beam optical system of LED (Light-Emitting Diode) automotive headlamp |
| CN204345531U (en) * | 2014-12-31 | 2015-05-20 | 华侨大学 | A kind of asymmetric LED street lamp lens |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023025605A1 (en) * | 2021-08-23 | 2023-03-02 | Signify Holding B.V. | Modulated linear lens |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104566216A (en) | 2015-04-29 |
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