CN102997178A - Lens and lighting device with lens - Google Patents
Lens and lighting device with lens Download PDFInfo
- Publication number
- CN102997178A CN102997178A CN 201110268286 CN201110268286A CN102997178A CN 102997178 A CN102997178 A CN 102997178A CN 201110268286 CN201110268286 CN 201110268286 CN 201110268286 A CN201110268286 A CN 201110268286A CN 102997178 A CN102997178 A CN 102997178A
- Authority
- CN
- China
- Prior art keywords
- light
- lens
- lighting device
- recessed region
- light source
- 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.)
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
- G02B27/0961—Lens arrays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
Abstract
The invention relates to a lens used for a lighting device, which is provided with a bottom surface (1) and a light emitting surface (2) raised on the bottom surface (1), wherein a recessed area (3) is formed at the center of the bottom surface (1); a light incidence surface (4) is formed on the surface of the recessed area (3); a light source (5) of the lighting device is arranged in the recessed area (3); and the recessed area (3) symmetrically rotates relative to an optical axis (X) of the light source (5), wherein a plurality of annular grooves (4a) are formed on the light incidence surface (4), and light rays from the light source (5) are emitted out through the light emitting surface (2) after refraction through the annular grooves (4a). Moreover, the invention further relates to a lighting device with the lens in above type.
Description
Technical field
The present invention relates to a kind of lens for lighting device.In addition, the invention still further relates to a kind of lighting device with lens of the above-mentioned type.
Background technology
Along with the development of LED lighting engineering, people more and more with the LED lighting device as light source applications in various environment.Because the manufacturing tolerance of led chip, the light that led chip sends is usually also inhomogeneous in the brightness of the actual hot spot that object to be illuminated forms.Some the time illumination be not very even and color neither be very even.In order to address the above problem, obtain good as far as possible illuminating effect, usually need to lens be installed at led chip, utilize these lens that the light that led chip sends is adjusted.In the prior art, the exit facet of lens be that is to say to be formed with a lot of projection or concave surfaces that distribute arbitrarily on this exit facet, thereby forms diffusing surface by structuring.This diffusing surface is adjusted the light from led chip.Other a solution is directly to add that at the top of lens is dispersed a screen, thereby the light of led chip is adjusted.Yet the light of the lens of process the above-mentioned type and the light of dispersing the screen adjustment distributes to be difficult to be expected or to be difficult to and simulated.Lens through the above-mentioned type are random with dispersing the light distribution of shielding the light of adjusting.
Summary of the invention
For addressing the above problem, the present invention proposes a kind of lens for lighting device, can realize at object to be illuminated the light distribution effect of expection by the light of this lens outgoing.In addition, the present invention also proposes a kind of lighting device with lens of the above-mentioned type.
First purpose of the present invention realizes thus by a kind of lens, i.e. these lens light-emitting face of having the bottom surface and swelling in this bottom surface, the central authorities of bottom surface form recessed region, the surface of recessed region forms light entrance face, the light source of lighting device is arranged in the recessed region, and recessed region is with respect to the optical axis Rotational Symmetry of light source, wherein, offer many annular ditch grooves on the light entrance face, these annular ditch grooves will be from penetrating through light-emitting face behind the light refraction of light source.In design according to the present invention, from the light of light source at first by offering the light entrance face refraction of many annular ditch grooves.The light that obtains according to hope distributes and can backwards calculation goes out concrete configuration and the arrangement of annular ditch groove.
According to a preferred design of the present invention, recessed region is designed to similar conical, the inner conical surface of recessed region forms light entrance face, a plurality of annular ditch grooves are respectively formed on the plane perpendicular to optical axis of recessed region, and arrange from bottom to the top of recessed region with being adjacent to each other.In this arrangement, each annular ditch groove itself limits a plane, and these planes are parallel to respectively the plane perpendicular to optical axis.Can the angle of expection will be adjusted to from the light of light source by this annular ditch groove, thereby the light that obtains expection distributes.
Preferably, the top design of recessed region becomes sphere.By the top of this sphere, the edge of the hot spot that produces after the rays pass through lens outgoing from light source and the brightness at center is all near consistent, and can not be formed centrally brighter zone in hot spot, distributes thereby obtain uniform light.
A preferred design according to the present invention proposes, and the cross section of annular ditch groove on the plane of being passed by optical axis is circular arc.The cross section of this circular arc is conducive to the even distribution of light more.
Preferably, the radius of circular arc is between 0.1 to 0.5 millimeter.It is even as far as possible that circular arc in this scope can make light distribute.
A preferred design according to the present invention proposes, light-emitting face comprises the zone line of concave surface bended and the fringe region of convex bending, and zone line and described fringe region seamlessly transit, and wherein zone line and described fringe region are respectively with respect to the optical axis Rotational Symmetry.Such light-emitting face can obtain the uniformly photodistributed lighting pattern that obtains simultaneously particular form.
Another object of the present invention is by a kind of lighting device realization with lens of the above-mentioned type, and this lighting device can produce uniform light and distribute.
According to a preferred design of the present invention, the light source of lighting device is led light source, and led light source has the advantages that as green energy resource the life-span is long, light efficiency is high.
Description of drawings
Accompanying drawing consists of the part of this specification, is used for helping further to understand the present invention.These accompanying drawings illustrate embodiments of the invention, and are used for illustrating principle of the present invention with specification.Identical parts represent with identical label in the accompanying drawings.Shown in the figure:
Fig. 1 is the sectional view according to lens of the present invention;
Fig. 2 is that the light of light source passes through according to the index path behind the lens of the present invention;
Fig. 3 is the partial enlarged drawing according to the light entrance face of lens of the present invention.
The specific embodiment
Fig. 1 shows the sectional view according to lens of the present invention.As seen from the figure, these lens have bottom surface 1 and 1 light-emitting face 2 that swells in the bottom surface.1 central authorities form recessed region 3 in the bottom surface, and as seen from the figure, this recessed region 3 is designed to similar conical, and the internal conical surface of this recessed region 3 forms light entrance face 4.The light source 5 (referring to Fig. 2) of lighting device is arranged in the recessed region 3, and recessed region 3 is with respect to the optical axis X Rotational Symmetry of this light source 5, wherein, offer many annular ditch groove 4a on the light entrance face 4, these annular ditch grooves 4a will be from penetrating through light-emitting face 2 behind the light refraction of light source 5.In addition, the top 4b of recessed region 3 is designed to sphere.In design of the present invention, light source 5 is designed to led light source.
From Fig. 1 further as seen, light-emitting face 2 comprises the zone line 2a of concave surface bended and the fringe region 2b of convex bending, and zone line 2a and fringe region 2b seamlessly transit, and wherein zone line 2a and fringe region 2b are respectively with respect to optical axis X Rotational Symmetry.
Fig. 2 shows the light process of light source 5 according to the index path behind the lens of the present invention.As seen from the figure, light is through penetrating by light-emitting face 2 after light entrance face 1 refraction.Thus, more even from the distribution of light on object to be illuminated of light source 5.
Fig. 3 shows the partial enlarged drawing according to the light entrance face 4 of lens of the present invention.As seen from the figure, the cross section of annular ditch groove 4a on the plane of being passed by optical axis X is circular arc.The radius of this circular arc is between 0.1 to 0.5 millimeter.The profile of the circular arc of this size can better reflect light, thereby makes distribution of light more even.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Reference number
1 bottom surface
2 light-emitting faces
The 2a zone line
The 2b fringe region
3 recessed regions
4 light entrance faces
The 4a annular ditch groove
The top of 4b recessed region
5 light sources
The X optical axis
Claims (8)
1. lens that are used for lighting device, the light-emitting face (2) that has bottom surface (1) and swell in described bottom surface (1), the central authorities of described bottom surface (1) form recessed region (3), the surface of described recessed region (3) forms light entrance face (4), the light source of described lighting device (5) is arranged in the described recessed region (3), and described recessed region (3) is with respect to optical axis (X) Rotational Symmetry of described light source (5), it is characterized in that, offer many annular ditch grooves (4a) on the described light entrance face (4), penetrate through described light-emitting face (2) after described annular ditch groove (4a) refraction from the light of described light source (5).
2. lens according to claim 1, it is characterized in that, described recessed region (3) is designed to similar conical, the inner conical surface of described recessed region (3) forms described light entrance face (4), many described annular ditch grooves (4a) are respectively formed on the plane perpendicular to described optical axis (X) of described recessed region (3), and arrange from bottom to the top (4b) of described recessed region (3) with being adjacent to each other.
3. lens according to claim 2 is characterized in that, the described top (4b) of described recessed region (3) is designed to sphere.
4. lens according to claim 2 is characterized in that, the cross section of described annular ditch groove (4a) on the plane of being passed by described optical axis (X) is circular arc.
5. lens according to claim 4 is characterized in that, the radius of described circular arc is between 0.1 to 0.5 millimeter.
6. each described lens in 5 according to claim 1, it is characterized in that, described light-emitting face (2) comprises the zone line (2a) of concave surface bended and the fringe region (2b) of convex bending, and described zone line (2a) seamlessly transits with described fringe region (2b), and wherein said zone line (2a) and described fringe region (2b) are respectively with respect to described optical axis (X) Rotational Symmetry.
7. a lighting device is characterized in that, described lighting device has according to claim 1 each described lens in 6.
8. lighting device according to claim 7 is characterized in that, the light source of described lighting device is led light source.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110268286 CN102997178A (en) | 2011-09-09 | 2011-09-09 | Lens and lighting device with lens |
| PCT/EP2012/067145 WO2013034522A1 (en) | 2011-09-09 | 2012-09-03 | A lens and an illuminating device with the lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110268286 CN102997178A (en) | 2011-09-09 | 2011-09-09 | Lens and lighting device with lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102997178A true CN102997178A (en) | 2013-03-27 |
Family
ID=46982523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110268286 Pending CN102997178A (en) | 2011-09-09 | 2011-09-09 | Lens and lighting device with lens |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102997178A (en) |
| WO (1) | WO2013034522A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020677A (en) * | 2015-07-31 | 2015-11-04 | 华侨大学 | Wide-angle lens used for uniform near-field illumination |
| CN105090776A (en) * | 2014-05-07 | 2015-11-25 | 恩普乐股份有限公司 | Light flux controlling member, light emitting device, surface light source device and display apparatus |
| CN105627250A (en) * | 2014-11-05 | 2016-06-01 | 东莞雷笛克光学有限公司 | Optical assembly and illuminating device with same |
| 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 |
| CN110349513A (en) * | 2019-07-19 | 2019-10-18 | 北京神州科鹰技术有限公司 | A kind of LED display and production method eliminated moire fringes and improve light mixing effect |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568068A (en) | 2015-10-09 | 2017-04-19 | 瑞仪光电(苏州)有限公司 | Light guiding lens and light source module |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6019493A (en) * | 1998-03-13 | 2000-02-01 | Kuo; Jeffrey | High efficiency light for use in a traffic signal light, using LED's |
| DE102005061798A1 (en) * | 2005-09-30 | 2007-04-05 | Osram Opto Semiconductors Gmbh | Lighting arrangement has radiation-emitting diode with two beam-shaping optical elements that deviate part of the light from the optical axis |
| JP4350144B2 (en) * | 2007-08-09 | 2009-10-21 | シャープ株式会社 | LIGHT EMITTING DEVICE AND LIGHTING DEVICE EQUIPPED WITH THE SAME |
| KR100998017B1 (en) * | 2009-02-23 | 2010-12-03 | 삼성엘이디 주식회사 | Lens for Light Emitting Diode Package and Light Emitting Diode Package Having The Same |
| CN102128421A (en) * | 2010-01-18 | 2011-07-20 | 奥斯兰姆有限公司 | Lamp shell, lamp with lamp shell and manufacturing method for lamp shell |
-
2011
- 2011-09-09 CN CN 201110268286 patent/CN102997178A/en active Pending
-
2012
- 2012-09-03 WO PCT/EP2012/067145 patent/WO2013034522A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090776A (en) * | 2014-05-07 | 2015-11-25 | 恩普乐股份有限公司 | Light flux controlling member, light emitting device, surface light source device and display apparatus |
| CN105627250A (en) * | 2014-11-05 | 2016-06-01 | 东莞雷笛克光学有限公司 | Optical assembly and illuminating device with same |
| CN105020677A (en) * | 2015-07-31 | 2015-11-04 | 华侨大学 | Wide-angle lens used for uniform near-field illumination |
| 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 |
| WO2019109992A1 (en) * | 2017-12-07 | 2019-06-13 | 刘龙辉 | Backlight module lens, and backlight module having same |
| CN110349513A (en) * | 2019-07-19 | 2019-10-18 | 北京神州科鹰技术有限公司 | A kind of LED display and production method eliminated moire fringes and improve light mixing effect |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013034522A1 (en) | 2013-03-14 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130327 |