CN106402798A - Lens for illumination of LED lamp - Google Patents
Lens for illumination of LED lamp Download PDFInfo
- Publication number
- CN106402798A CN106402798A CN201611003922.3A CN201611003922A CN106402798A CN 106402798 A CN106402798 A CN 106402798A CN 201611003922 A CN201611003922 A CN 201611003922A CN 106402798 A CN106402798 A CN 106402798A
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- China
- Prior art keywords
- plane
- incidence
- lens
- light
- deviation
- Prior art date
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention belongs to the technical field of illumination of LED street lamps and discloses a lens for illumination of an LED lamp. The lens comprises a base plate portion, an off-axis transmission portion and a total-internal-reflection portion. The off-axis transmission portion and the total-internal-reflection portion are both arranged on the base plate portion. The off-axis transmission portion and the total-internal-reflection portion are each provided with a first incident surface and a second incident surface. The first incident surfaces and the second incident surfaces face the LED lamp. The off-axis transmission portion is further provided with a free curved surface. The total-internal-reflection portion is further provided with a total-internal-reflection surface and a deflection surface. According to the lens for illumination of the LED lamp, when the LED street lamp is mounted in a facing-down manner, illumination of a wide road is realized by improving the optical lens design and producing off-axis uniform spots. The lens is of a lens structure combined with total internal reflection, the energy utilization rate is increased, and stray light in the direction deviating from the target plane direction is reduced.
Description
Technical field
The invention belongs to LED street lamp lighting technical field, more particularly, to a kind of lens for LED illumination.
Background technology
LED, has become increasingly prevalent in the design of street lamp as light source applications.LED compares incandescent lamp, fluorescent lamp etc.
Traditional light source has very big advantage, such as efficiently, safety, energy-saving and environmental protection, life-span length, small volume, colour rendering index high,
Fast response time etc..At present, LED has been widely used for FPD, indoor and outdoor illumination, automotive lighting, Landscape Lighting
In each different field.
The light that goes out of LED chip is distributed for Lambertian, and such optical field distribution is generally difficult in actual illumination
The performance standard of needs is met in application.Accordingly, it would be desirable to secondary optical design is carried out to LED chip, to meet actual illumination need
Ask.
Free-form surface lens and entirely interior anti-are mainly had in design structure currently used for the LED secondary optics of the applications such as street lamp
Penetrate two kinds of structures of lens.And free-form surface lens are used for when off-axis illumination it is difficult to control the veiling glare along pavement direction；
And individually total internal reflection lens are then difficult to realize off-axis illumination scheme and the rotation asymmetry illumination scheme of LED.
Content of the invention
Disadvantages described above for prior art or Improvement requirement, the invention provides a kind of lens for LED illumination,
The illumination of broad road is realized by way of improving optical lens design and generating from axle uniform light spots.
For achieving the above object, it is proposed, according to the invention, provide a kind of lens for LED illumination it is characterised in that wrapping
Include chassis portion, from axle transmissive portions and total internal reflection portion, wherein, described be arranged at described bottom from axle transmissive portions and total internal reflection portion
In pan portion, described do not have first plane of incidence and second plane of incidence from axle transmissive portions and described total internal reflection parts, and described first
The plane of incidence and described second plane of incidence are respectively facing LED, so that the light that LED sends is respectively from first plane of incidence and second
The plane of incidence enter described from axle transmissive portions with described total internal reflection portion, wherein, described first plane of incidence is quadratic surface or Gauss
Face, described second plane of incidence is perpendicular；
Described also have free form surface from axle transmissive portions, to receive the light that first plane of incidence comes and so that light is occurred partially
Ground is arrived at after folding；
Described total internal reflection portion also has total internal reflection surface and deviation face, and it is incident that described total internal reflection surface is used for reflection second
Light that face comes deviation face described in light directive, described deviation face is used for making light arrive at ground after there is deviation, in addition,
Described deviation face is plane.
Preferably, described free form surface is used for making light form rectangular illumination on target object after there is deviation.
Preferably, described deviation face is perpendicular to described second plane of incidence.
Preferably, described deviation face and the angle of described second plane of incidence are acute angle, and enter along away from described first
Penetrate the direction in face, the height in described deviation face is gradually lowered.
In general, by the contemplated above technical scheme of the present invention compared with prior art, can obtain down and show
Beneficial effect：
1) present invention, when LED street lamp face down is installed, is generated from axle uniform light spots by improving optical lens design
Mode realize the illumination of broad road.
2) present invention combines the lens arrangement of total internal reflection, improves capacity usage ratio, reduces and deviates from objective plane direction
Veiling glare.
3) present invention adopts quadratic surface, makes light form the hot spot of deflection after first plane of incidence, thus reducing
The deviation demand to light for the free form surface, design can be further ensured that under the requirement meeting off-axis illumination integrally-built tight
Gathering property.
4) the using and offset quadric design of total internal reflection mechanism, can greatly reduce the Fresnel of optical surface
Loss, improves the optical efficiency (after standard machinery encapsulation, can reach more than 92%) of whole light fixture.
Brief description
Fig. 1 is the top view of the present invention；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is the profile in Fig. 1 along line A-A；
Fig. 4 is the profile of the line B-B shown in Fig. 1；
Fig. 5 is the upward view of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.As long as additionally, involved technical characteristic in each embodiment of invention described below
The conflict of not constituting each other just can be mutually combined.
With reference to Fig. 1～Fig. 5, a kind of lens for LED illumination, include chassis portion 3, from axle transmissive portions 7 and entirely interior instead
Penetrate portion 8, wherein, described be arranged in described chassis portion 3 from axle transmissive portions 7 and total internal reflection portion 8, described from axle transmissive portions 7
It is respectively provided with first plane of incidence 6 and second plane of incidence 5 with described total internal reflection portion 8, described first plane of incidence 6 and described second enters
Penetrate face 5 and be respectively facing LED so that the light that sends of LED enter from first plane of incidence 6 and second plane of incidence 5 respectively described
From axle transmissive portions 7 and described total internal reflection portion 8, wherein, described first plane of incidence 6 is quadratic surface or Gauss surface, described second
The plane of incidence 5 is perpendicular；
Described also have free form surface 1 from axle transmissive portions 7, to receive the light that first plane of incidence 6 comes and so that light is sent out
Ground is arrived at after raw deviation；Preferably, described free form surface 1 is used for making light form rectangle on target object after there is deviation
Illumination.
Described total internal reflection portion 8 also has total internal reflection surface 4 and deviation face 2, and described total internal reflection surface 4 is used for reflection second
Light that the plane of incidence 5 comes deviation face 2 described in light directive, described deviation face 2 is used for making light arrive at ground after there is deviation
Face, in addition, described deviation face 2 is plane.
Further, described deviation face 2 is perpendicular to described second plane of incidence 5, or, described deviation face 2 enters with described second
The angle penetrating face 5 is acute angle, and along the direction away from described first plane of incidence 6, the height in described deviation face 2 is gradually lowered
LED can be placed on quadric central symmetry axis (if quadratic surface has central symmetry axis) with this thoroughly
At the point of interface of mirror bottom surface place plane, or if quadratic surface if (if secondary song if axle quadratic surface
If there are central symmetry axis in face, quadric central symmetry axis are not passed through LED position), then LED is incident from second
The horizontal range in face 5 is more than the horizontal range from second plane of incidence 5 for quadric axis, during LED illumination, by perpendicular
The light receiving passes through the refraction in deviation face 2 after fully reflecting surface is reflected off, and arrives at ground, is used against LED
From the application of axle Uniform Illumination, such as road lighting, 4S shop automobile renders illumination etc..Wherein, free form surface 1 is in first plane of incidence 6
Assist the lower rectangular illumination realized from axle, its design structure is to be derived using the method for light mapping and obtain.
Total internal reflection surface 4 and free form surface 1 are combined by the present invention, realize the off-axis illumination of LED, simultaneously can be preferably
The veiling glare of control system.
In addition, if first plane of incidence 6 is from axle quadratic surface, on the premise of meeting oblique illumination, optical texture is more
Step up to gather.
As it will be easily appreciated by one skilled in the art that the foregoing is only presently preferred embodiments of the present invention, not in order to
Limit the present invention, all any modification, equivalent and improvement made within the spirit and principles in the present invention etc., all should comprise
Within protection scope of the present invention.
Claims (4)
1. a kind of lens for LED illumination it is characterised in that include chassis portion, from axle transmissive portions and total internal reflection portion, its
In, described be arranged in the portion of described chassis from axle transmissive portions and total internal reflection portion, described from axle transmissive portions and described entirely interior anti-
The portion of penetrating is respectively provided with first plane of incidence and second plane of incidence, and described first plane of incidence and described second plane of incidence are respectively facing LED
Lamp, so that the light that LED sends is described from axle transmissive portions and described complete from first plane of incidence and the entrance of second plane of incidence respectively
Internal reflection portion, wherein, described first plane of incidence is quadratic surface or Gauss surface, and described second plane of incidence is perpendicular；
Described also have free form surface from axle transmissive portions, to receive the light that first plane of incidence comes and so that light is occurred after deviation
Arrive at ground；
Described total internal reflection portion also has total internal reflection surface and deviation face, and described total internal reflection surface is used for reflection the second plane of incidence mistake
The light coming deviation face described in light directive, described deviation face is used for making light arrive at ground after there is deviation, in addition, described
Deviation face is plane.
2. a kind of lens for LED illumination according to claim 1 are it is characterised in that described free form surface is used for
Make light, after there is deviation, rectangular illumination be formed on target object.
3. a kind of lens for LED illumination according to claim 1 it is characterised in that described deviation face perpendicular to
Described second plane of incidence.
4. a kind of lens for LED illumination according to claim 1 it is characterised in that described deviation face with described
The angle of second plane of incidence is acute angle, and along the direction away from described first plane of incidence, the height in described deviation face is gradually
Reduce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611003922.3A CN106402798B (en) | 2016-11-15 | 2016-11-15 | A kind of lens for LED light illumination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611003922.3A CN106402798B (en) | 2016-11-15 | 2016-11-15 | A kind of lens for LED light illumination |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106402798A true CN106402798A (en) | 2017-02-15 |
| CN106402798B CN106402798B (en) | 2019-05-21 |
Family
ID=59230400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611003922.3A Active CN106402798B (en) | 2016-11-15 | 2016-11-15 | A kind of lens for LED light illumination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402798B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464881A (en) * | 2021-06-22 | 2021-10-01 | 深圳市睿光达光电有限公司 | Street lamp with polarisation anti-dazzle lens |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0748978B1 (en) * | 1995-06-12 | 2003-02-19 | Denso Corporation | Illuminating device with a light distributing lens |
| CN102889550A (en) * | 2012-09-28 | 2013-01-23 | 清华大学深圳研究生院 | Lens |
| CN103090309A (en) * | 2011-10-28 | 2013-05-08 | 欧司朗股份有限公司 | Lens and asymmetric light distribution lighting device comprising same |
| CN204786162U (en) * | 2015-06-04 | 2015-11-18 | 上海广中电子电器配件有限公司 | Asymmetric batwing-shaped light distribution curve lens and lamp with same |
| CN105674211A (en) * | 2016-03-30 | 2016-06-15 | 宁波正特光学电器有限公司 | Light distributing lens of projection lamp |
-
2016
- 2016-11-15 CN CN201611003922.3A patent/CN106402798B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0748978B1 (en) * | 1995-06-12 | 2003-02-19 | Denso Corporation | Illuminating device with a light distributing lens |
| CN103090309A (en) * | 2011-10-28 | 2013-05-08 | 欧司朗股份有限公司 | Lens and asymmetric light distribution lighting device comprising same |
| CN102889550A (en) * | 2012-09-28 | 2013-01-23 | 清华大学深圳研究生院 | Lens |
| CN204786162U (en) * | 2015-06-04 | 2015-11-18 | 上海广中电子电器配件有限公司 | Asymmetric batwing-shaped light distribution curve lens and lamp with same |
| CN105674211A (en) * | 2016-03-30 | 2016-06-15 | 宁波正特光学电器有限公司 | Light distributing lens of projection lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464881A (en) * | 2021-06-22 | 2021-10-01 | 深圳市睿光达光电有限公司 | Street lamp with polarisation anti-dazzle lens |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106402798B (en) | 2019-05-21 |
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