CN203615243U - Lens and lighting device comprising lens - Google Patents
Lens and lighting device comprising lens Download PDFInfo
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- CN203615243U CN203615243U CN201320606082.5U CN201320606082U CN203615243U CN 203615243 U CN203615243 U CN 203615243U CN 201320606082 U CN201320606082 U CN 201320606082U CN 203615243 U CN203615243 U CN 203615243U
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Abstract
The utility model provides a lens, which is provided with a plane mounting surface, wherein the lens extends along a direction which is parallel to the mounting surface, and the lens comprises a first part and a second part which are taken as sidewalls, and a top used for connecting the first part and the second part; the top comprises a top light incident surface and a top light emitting surface, the first part comprises a first light incident surface, a first reflecting surface and a first light emitting surface, the second part comprises a second light incident surface, a second reflecting surface and a second light emitting surface, and a sunken space capable of containing a plurality of light sources is limited by the first light incident surface, the top light incident surface and the second light incident surface. Through the asymmetrical lens design, the emergent light and a direction of an optical axis of an LED (Light Emitting Diode) generate a deflection angle, so that the lighting device does not need to be deflected in use. Meanwhile, the emergent light on different light emitting surfaces has emission at a small angle, so that the light beams emitted from different light emitting surfaces are overlapped with each other, thus the yellow spots can be effectively eliminated.
Description
Technical field
The utility model relates to a kind of lens and a kind of lighting device that comprises these lens.
Background technology
Along with the development of lighting engineering, total internal reflection (TIR) lens are applied in various lighting devices more and more, particularly in the lighting device take LED as light source.Wall lamp, as its name suggests, allows light as water, wash metope, is current the most frequently used building decoration light fixture, because LED has the features such as energy-conservation, light efficiency is high, rich color, life-span are long, so the wall lamp of other light sources is replaced by LED wall lamp gradually at present.
Tradition TIR wall lamp lens, adopt the LED light source of 1W ~ 3W, the corresponding lens of a LEDs more, it is in a row that many simple lenses are put, but this structure, because the interval of LED is larger, and the beam angle that rotational symmetric TIR lens obtain is very little, so while adopting rgb light source, mixed light can be inhomogeneous.Beat on metope, can see that foundation is colourama, just blend together white light every a segment distance later.
For addressing this problem, some producer proposes tension type TIR wall lamp lens, reduces the spacing of LED, and on lens draw direction, has increased the angle of emergent light, referring to Fig. 1.But the emergent light of this lens is parallel to LED light source optical axis direction mostly, when use, need to be by angle of light fixture entirety deflection.And the symmetrical luminous intensity distribution design of the many employings of such lens, being difficult to reach the needed light efficiency of washing wall, radiation response is bad.
Utility model content
The purpose of this utility model is in order to address the above problem, and provides a kind of emergent light and LED optical axis direction to have a deflection angle, does not need illumination apparatus to carry out the lens and the lighting device that comprises these lens of deflection when use again.
The technical solution of the utility model is, a kind of lens are provided, there is Plane Installation face, described lens extend along a direction that is parallel to described installed surface, described lens comprise as the Part I of sidewall and Part II, and connect the top of described Part I and Part II, described top comprises top incidence surface and top exiting surface, described Part I comprises the first incidence surface, the first reflecting surface and the first exiting surface, described Part II comprises the second incidence surface, the second reflecting surface and the second exiting surface, it is characterized in that, described the first incidence surface, top incidence surface, the second incidence surface limits the dented space that can hold multiple light sources, take the optical axis of described light source as reference axis, described lens are asymmetric shape perpendicular to the cross section of bearing of trend in described reference axis both sides.
Preferably, described top is convex lens.
Preferably, described top incidence surface is plane, and with described installed surface has an angle, described top exiting surface is the SPL cylinder of an evagination, and the SPL of described reference axis both sides is asymmetric, and described SPL meets the following conditions, between the emergent light of described top exiting surface and described reference axis, there is a deflection angle, the yawing moment of all emergent lights is consistent, and described deflection angle is that 0 degree is to 15 degree.
Preferably, between described the first exiting surface and described reference axis, have angle β 1, between described the second exiting surface and described reference axis, have angle β 2, β 1 and β 2 are unequal.
Preferably, described the first incidence surface, the second incidence surface, the first exiting surface, the second exiting surface is plane, described top exiting surface connects described the first exiting surface, the second exiting surface, described the first reflecting surface, the second reflecting surface is the SPL cylinder of evagination, described the first reflecting surface, the second reflecting surface is oppositely arranged with respect to described reference axis, article two, profile SPL is asymmetric, and meet the following conditions, described the first exiting surface, between the emergent light of the second exiting surface and described reference axis, there is a deflection angle, and the yawing moment of all emergent lights is consistent, described deflection angle is that 0 degree is to 15 degree.
Preferably, the emergent light of described the first exiting surface, the second exiting surface, top exiting surface is directional light.
Preferably, the emergent light of described the first exiting surface, the second exiting surface, top exiting surface is divergent beams, and the angle of divergence is less than 15 degree.
Preferably, described the first exiting surface, the second exiting surface, top exiting surface are matte surface.
The utility model also provides a kind of lighting device, it is characterized in that, comprise said lens, two above along light source arranged in a straight line, carry the circuit board of described light source, described lens are covered on described light source.
Preferably, also comprise a face shield outward at described lens.
Preferably, be blue-ray LED at described light source, on described face shield, include yellow fluorescent powder.
The utility model, owing to having adopted technique scheme, makes it compared with prior art, and the utility model, by asymmetric Lens Design, makes emergent light and LED optical axis direction produce a deflection angle, does not need illumination apparatus to carry out deflection when use again.There is low-angle dispersing in the emergent light of different exiting surfaces simultaneously, and the light beam that different exiting surfaces are sent is mutually overlapping, can effectively eliminate macula lutea.
Accompanying drawing explanation
Fig. 1 is technology lens formerly;
Fig. 2 is the structural representation of the utility model lens;
Fig. 3 is the profile of the utility model lens;
Fig. 4 is the profile of the utility model lens;
Fig. 5 is the ray tracing figure of the utility model lens the first embodiment;
Fig. 6 is the ray tracing figure of the utility model lens the second embodiment;
Fig. 7 is the surface of intensity distribution of the utility model lens.
The specific embodiment
Below in conjunction with the drawings and specific embodiments to lens that the utility model proposes and comprise that the lighting device of these lens is described in further detail.
Specific embodiment please refer to Fig. 2, Fig. 3, and the present embodiment is a lighting module for wall lamp, comprises lens 101 and LED lamp bar 102, and lens 101 and LED lamp bar 102 are arranged in same plane, and LED lamp bar 102 is covered by lens 101.In some other embodiment, because lens carrier or other some mounting means, lens 101 and LED lamp bar 102 may not be arranged on same plane, and here for convenience of description, our alleged installed surface refers to LED lamp bar 102 place planes.The present embodiment adopts LED as light source, LED described here can refer to the LED of encapsulation, encapsulation LED, surface mount LED, chip on board LED, comprise the LED of a certain type optical element.The light source of the LED lamp bar of the present embodiment adopts the LED of SMT encapsulation, as 2323,5630,3014 etc.
As shown in Figure 4, top 1 is convex lens, top incidence surface 11 is plane, have an angle with installed surface, namely the angle theta between top incidence surface 11 and reference axis is greater than 90 degree, and described top exiting surface 12 is SPL cylinders of an evagination, and the SPL of described reference axis both sides is asymmetric, described SPL meets the following conditions, and makes to have a deflection angle between the emergent light of top exiting surface 12 and reference axis, as shown in Figure 5.The first incidence surface 21, the second incidence surface 31, the first exiting surface 22, the second exiting surface 32 are plane, and the first reflecting surface 23, the second reflecting surface 33 are SPL cylinders of evagination.As shown in Figure 4, between the first exiting surface 22 and reference axis, exist between angle β 1, the second exiting surface 32 and reference axis and have angle β 2, β 1 and β 2 are unequal, between the first incidence surface 21 and reference axis, exist between angle α 1, the second incidence surface 31 and reference axis and have angle α 2.The first reflecting surface 23, the second reflecting surface 33 are oppositely arranged, and two profile SPLs are asymmetric, and meet the following conditions, and state between the emergent light of described the first exiting surface 22, the second exiting surface 32 and reference axis and have a deflection angle.
Farther for the distance that wall lamp is irradiated, our lens of design are small angle inclination, and approximate parallel light emergence, as shown in Figure 5, and the yawing moment of three all emergent lights of part is consistent, so-called low-angle be exactly deflection angle be that 0 degree is to 15 degree.All emergent light deflection angles are for being 5 ° in the present embodiment, if certainly adopt less angle can outrange as 12 ° of light.As follows in order to realize the each design parameter of parallel light emergence of such deflection angle, θ is that 95 °, β 1 are that 63 °, β 2 are that 60 °, α 1 are that 10 °, α 2 are 10 °.The angle of the tangent line of the SPL of the first reflecting surface 21 profiles and horizontal direction (left side) changes continuously from 46 °-70 °.The angle of the tangent line of the SPL of the second reflecting surface 31 profiles and horizontal direction (right side) from 49 °-74 ° continuously.The SPL of top exiting surface 12 profiles, in reference axis (in figure) Z direction left side, the angle of the tangent line of curve and horizontal direction (right side) changes continuously from 48 ° to-5 °, and on optical axis (in figure) Z direction right side, the tangent line of curve and the angle of horizontal direction change continuously from-5 ° to-51 °.
But said lens, in the time adopting the LED of SMT encapsulation, due to fluorescent powder coated inhomogeneous, is easy to cause macula lutea.For solving macula lutea problem, another embodiment is provided here, as shown in Figure 6, the no longer parallel outgoing of emergent light, but be to have a little angle of divergence.The lens that the present embodiment provides, the shooting angle of three part light is to left avertence, and deflection angle is no longer identical, and this three parts light, beats hot spot on metope mutually overlapping.Although but the emergent light of every part has a dispersion angle, the angle of all emergent lights and reference axis is still limited to 0 degree between 15 degree.The design parameter of the present embodiment is as follows, and θ is that 95 °, β 1 are that 62 °, β 2 are that 58 °, α 1 are that 10 °, α 2 are 7 °.The angle of the tangent line of the SPL of the first reflecting surface 21 profiles and horizontal direction (left side) changes continuously from 50 °-67 °.The angle of the tangent line of the SPL of the second reflecting surface 31 profiles and horizontal direction (right side) from 55 °-72 ° continuously.The SPL of top exiting surface 12 profiles, in reference axis (in figure) Z direction left side, the angle of the tangent line of curve and horizontal direction (right side) changes continuously from 53 ° to-18 °, on optical axis (in figure) Z direction right side, the tangent line of curve and the angle of horizontal direction change continuously from-18 ° to-47 °.
For further solving macula lutea problem, also can solve by three exiting surfaces are done to some surface frosted processing.
Fig. 7 is the eccentric luminous intensity distribution module of low-angle that the present embodiment beam angle 0 is spent-15 degree, the distribution curve flux that optical simulation obtains.
Lens in the present embodiment are used for being assembled into LED fluorescent tube, fluorescent tube comprises multiple LED light sources, these LED light sources are arranged in a linear on a circuit board, lens in the present embodiment are covered on circuit board, as shown in Fig. 2, Fig. 5, Fig. 6, LED light source 102 is positioned at the strip groove below in the middle of lens.As a fluorescent tube, also comprise a face shield outward at lens, face shield is shaped as cylindrical, is similar to the shape of conventional fluorescent fluorescent tube.Face shield is light-transmitting materials, can by glass, transparent resins such as Merlon and crystalline ceramics form.As required, can be by diffusant or phosphor-coating the inner surface to face shield, or diffusant or phosphor can be included in face shield.In one embodiment, adopt remote fluorescence powder technology to solve the arrange sparse granular sensation forming and macula lutea problem due to LED.LED lamp bar light source adopts blue chip, puts the lens that a basic utility model is described on light source, and the coated one deck glass in outside or plastic face mask, apply yellow fluorescent powder on the inwall of face shield.
Above in order to illustrate and to describe to the description of the utility model preferred embodiment, not want the utility model limit or be confined to disclosed concrete form, obviously, may make many modifications and variations, these modifications and variations may be obvious to those skilled in the art, within should being included in the scope of the present utility model being defined by appended claims.
Claims (12)
1. lens, there is Plane Installation face, described lens extend along a direction that is parallel to described installed surface, described lens comprise as the Part I of sidewall and Part II, and connect the top of described Part I and Part II, described top comprises top incidence surface and top exiting surface, described Part I comprises the first incidence surface, the first reflecting surface and the first exiting surface, described Part II comprises the second incidence surface, the second reflecting surface and the second exiting surface, it is characterized in that, described the first incidence surface, top incidence surface, the second incidence surface limits and can hold multiple dented space along light source arranged in a straight line, also to pass through described multiple optical axises along light source arranged in a straight line as reference axis perpendicular to described installed surface, described lens are asymmetric shape described with reference to over glaze side perpendicular to the cross section of bearing of trend.
2. a kind of lens according to claim 1, is characterized in that described top is convex lens.
3. a kind of lens according to claim 2, it is characterized in that described top incidence surface is plane, and with described installed surface has an angle, described top exiting surface is the SPL cylinder of an evagination, and the SPL of described reference axis both sides is asymmetric, and described SPL meets the following conditions, between the emergent light of described top exiting surface and described reference axis, there is a deflection angle, the yawing moment of all emergent lights is consistent, and described deflection angle is that 0 degree is to 15 degree.
4. a kind of lens according to claim 3, it is characterized in that described the first incidence surface, the second incidence surface, the first exiting surface, the second exiting surface are plane, described top exiting surface connects described the first exiting surface, the second exiting surface, and described the first reflecting surface, the second reflecting surface are the SPL cylinders of evagination.
5. a kind of lens according to claim 4, is characterized in that having angle β 1 between described the first exiting surface and described reference axis, between described the second exiting surface and described reference axis, have angle β 2, and β 1 and β 2 are unequal.
6. a kind of lens according to claim 5, it is characterized in that described the first reflecting surface, the second reflecting surface are oppositely arranged with respect to described reference axis, article two, profile SPL is asymmetric, and meet the following conditions, between the emergent light of described the first exiting surface, the second exiting surface and the described plane of reference, there is a deflection angle, and the yawing moment of all emergent lights is consistent, described deflection angle is that 0 degree is to 15 degree.
7. a kind of lens according to claim 6, the emergent light that it is characterized in that described the first exiting surface, the second exiting surface, top exiting surface is directional light.
8. a kind of lens according to claim 6, the emergent light that it is characterized in that described the first exiting surface, the second exiting surface, top exiting surface is divergent beams, the angle of divergence is less than 15 degree.
9. according to a kind of lens described in claim 7 or 8, it is characterized in that described the first exiting surface, the second exiting surface, top exiting surface are matte surface.
10. a lighting device, is characterized in that, comprise according to the lens described in any one in claim 1-9, two above along light source arranged in a straight line, carry the circuit board of described light source, described lens are covered on described light source.
11. a kind of lighting devices according to claim 10, is characterized in that also comprising a face shield outward at described lens.
12. a kind of lighting devices according to claim 11, is characterized in that at described light source be blue-ray LED, on described face shield, include yellow fluorescent powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320606082.5U CN203615243U (en) | 2013-09-29 | 2013-09-29 | Lens and lighting device comprising lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320606082.5U CN203615243U (en) | 2013-09-29 | 2013-09-29 | Lens and lighting device comprising lens |
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| Publication Number | Publication Date |
|---|---|
| CN203615243U true CN203615243U (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320606082.5U Expired - Fee Related CN203615243U (en) | 2013-09-29 | 2013-09-29 | Lens and lighting device comprising lens |
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| CN (1) | CN203615243U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180092A (en) * | 2015-10-23 | 2015-12-23 | 欧普照明股份有限公司 | Lens and light source module |
| CN107143825A (en) * | 2017-07-03 | 2017-09-08 | 深圳市中奇创享照明科技有限公司 | A kind of lens and light fixture |
| CN107191892A (en) * | 2017-07-10 | 2017-09-22 | 惠州雷士光电科技有限公司 | A kind of high usage washes wall lens |
| CN107477521A (en) * | 2017-09-21 | 2017-12-15 | 广东欧曼科技股份有限公司 | A kind of wall lamp lens, illuminating module and wall lamp |
| TWI681146B (en) * | 2016-05-19 | 2020-01-01 | 日商小糸電工股份有限公司 | Light distribution lens |
| CN112539361A (en) * | 2020-12-09 | 2021-03-23 | 长春希达电子技术有限公司 | High-uniformity blackboard lamp lens |
-
2013
- 2013-09-29 CN CN201320606082.5U patent/CN203615243U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180092A (en) * | 2015-10-23 | 2015-12-23 | 欧普照明股份有限公司 | Lens and light source module |
| TWI681146B (en) * | 2016-05-19 | 2020-01-01 | 日商小糸電工股份有限公司 | Light distribution lens |
| CN107143825A (en) * | 2017-07-03 | 2017-09-08 | 深圳市中奇创享照明科技有限公司 | A kind of lens and light fixture |
| CN107191892A (en) * | 2017-07-10 | 2017-09-22 | 惠州雷士光电科技有限公司 | A kind of high usage washes wall lens |
| CN107477521A (en) * | 2017-09-21 | 2017-12-15 | 广东欧曼科技股份有限公司 | A kind of wall lamp lens, illuminating module and wall lamp |
| CN112539361A (en) * | 2020-12-09 | 2021-03-23 | 长春希达电子技术有限公司 | High-uniformity blackboard lamp lens |
| CN112539361B (en) * | 2020-12-09 | 2022-12-27 | 长春希达电子技术有限公司 | High-uniformity blackboard lamp lens |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20210929 |
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| CF01 | Termination of patent right due to non-payment of annual fee |