CN103307548A - Lens and illuminating device provided with same - Google Patents
Lens and illuminating device provided with same Download PDFInfo
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- CN103307548A CN103307548A CN2012100623198A CN201210062319A CN103307548A CN 103307548 A CN103307548 A CN 103307548A CN 2012100623198 A CN2012100623198 A CN 2012100623198A CN 201210062319 A CN201210062319 A CN 201210062319A CN 103307548 A CN103307548 A CN 103307548A
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- 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
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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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- 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
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- 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
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The invention relates to a lens for an illuminating device (100). The lens is provided with a substrate (1) and a region projecting from the substrate (1) to define an accommodating cavity for accommodating a light source (5) of the illuminating device (100), wherein one side, which is far away from the light source (5), of the projecting region is designed into an exit surface (2), and one side close to the light source (5) is designed into an incident surface (4); the exit surface (2) and the incident surface (4) are mirror-symmetric relative to the first symmetric plane (V1) of an optical axis (A) passing through the light source (5), and are non-mirror-symmetric relative to a second symmetric plane (V2) which passes the optical axis (A) and is vertical to the first symmetric plane (V1); and the curves of the light emitting surface (2) and the incident surface (4) are designed in such a manner that light rays emitted by the light source (5) are emitted via the exit surface (2) at various angles and are reflected from each position of an irradiated surface (S) of an object to be irradiated to generate uniform light brightness (L). The invention further relates to an illuminating device (100) provided with the lens.
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
The LED luminescence component is widely used in street lighting.But the light distribution performance of LED luminescence component can not satisfy the requirement of street lighting, therefore must install a secondary lens at the top of LED luminescence component additional.Nearly all existing lens all are based on the design of illuminance uniformity theory.Can make street lamp obtain illuminance very uniformly by such lens.But, observer's eyes receive the brightness from the road surface, and brightness itself depends on the reflectance factor on illuminance and road surface, when the observer is in diverse location with respect to street lamp, the reflectance factor on road surface also has different variations, but the illuminance that obtains by the lens according to prior art is uniform, that is to say, the illuminance of light in different positions of street lamp emission is identical, the observer is different being in the received brightness in different positions so, this causes a problem, namely adopting the illuminance of light of the lighting device emission of lens of the prior art is uniformly, but the brightness of the light that road reflection goes out is not enough.
Summary of the invention
For solving the problems of the technologies described above, the present invention proposes a kind ofly for lighting device, the lens of street lamp especially, these lens are based on the design of brightness uniformity theory, and the light by lens outgoing according to the present invention has uniform brightness after by road reflection.In addition, the invention still further relates to 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 for lighting device, namely these lens have substrate and the zone of projection from the substrate, to limit the container cavity of the light source that holds lighting device, the side that a side away from light source in the zone of projection is designed to exit facet and close light source is designed to the plane of incidence, wherein exit facet and the plane of incidence are with respect to first plane of symmetry mirror image symmetry of the optical axis of process light source and with respect to the process optical axis and perpendicular to the non-mirror image symmetry of second plane of symmetry of first plane of symmetry, wherein, the curve of exit facet and the plane of incidence so designs, and makes to produce uniform brightness with all angles by the plane of incidence and exit facet and after each position reflection of the plane of illumination of thing to be illuminated from the light of light source outgoing.Lens according to the present invention that is to say based on brightness uniformity theory design, at first set through plane of illumination the brightness of each position light reflected be uniform, thereby oppositely extrapolate the curved profile of the plane of incidence and exit facet.
A preferred design according to the present invention proposes, the curve of exit facet and the plane of incidence so designs, make and have the illuminance of successively decreasing away from the direction of vertical photometer axis from the light of exit facet outgoing, the reflectance factor of the diverse location of illuminance and plane of illumination is complementary, to obtain uniform brightness.According to the relation of illuminance and brightness as can be known, brightness not only depends on illuminance, but also depends on the reflectance factor of the diverse location of plane of illumination.Under the prerequisite of having determined brightness, can extrapolate from the illuminance of the light of exit facet outgoing and successively decrease away from the direction of vertical photometer axis.
Further propose according to the present invention, the curve of exit facet and the plane of incidence so designs, make and obtain predetermined vertical photometry angle γ and light intensity I from the light of exit facet outgoing, with the illuminance that obtains to successively decrease away from the direction of vertical photometer axis, wherein vertical photometry angle is from the light of exit facet outgoing and the angle of vertical photometer axis.Preferably, illuminance is calculated by following formula and is obtained:
Wherein, H is the vertical height of light source distance plane of illumination.In design of the present invention, illuminance depends on vertical photometry angle and the light intensity from the light of exit facet outgoing in fact.When design consideration lens of the present invention, because the brightness that each position of plane of illumination is reflected to the observer is uniform, can obtain so from vertical photometry angle and the light intensity of each bar light of lens outgoing, can know the coordinate of point in three dimensions that is intersected by each bar light and the plane of incidence and exit facet by the optical model of special use thus, thereby determine the curved profile of the plane of incidence and exit facet.
A preferred design according to the present invention proposes, calculate reflectance factor according to vertical photometry angle and deviation angle, wherein deviation angle is that first intersection point of vertical photometer axis and plane of illumination is to from first line and the angle of observer between the reverse extending line of second line of residing position on the plane of illumination and second intersection point between second intersection point of the light of exit facet outgoing and plane of illumination.In design of the present invention, the angular range at vertical photometry angle 0 degree between 90 degree and the angular range of deviation angle at 0 degree between 180 degree.
Preferably, exit facet comprises by first curve of the upper surface of substrate intercepting, by second curve of first plane of symmetry intercepting with by the 3rd curve of second plane of symmetry intercepting, and the plane of incidence comprises by the 4th curve of the lower surface intercepting of substrate, by the 5th curve of first plane of symmetry intercepting with by the 6th curve of second plane of symmetry intercepting.Thereby exit facet cooperatively interacts with each bar curve of the plane of incidence and produces the light of the outgoing with predetermined vertical photometry angle and light intensity.
Advantageously, first curve is to obtain according to following formula in the xy coordinate system of initial point with the light source in the upper surface of substrate: R (θ)=Rc+dr (θ),
Dr (θ)＜0.2 * Rc, wherein, the scope of θ is between 0 to 360 degree, and R (θ) is each distance to light source on first curve, and Rc is constant, and Dl is the diameter of light source, dr (θ) is the variable that changes with angle θ.In design of the present invention, light source is led light source, and wherein the diameter of single LEDs light source is generally between 1 to 5mm.
Advantageously, second curve is according to following formula: f in the xy coordinate system of initial point with described light source in first plane of symmetry " (x)＜0 ,-Rc＜x＜Rc, f ' (0)=0,
Further advantageously, the 3rd curve is to obtain according to following formula in the xy coordinate system of initial point with described light source in described second plane of symmetry: f " (x)＜0 ,-Rc＜x＜Rc, f ' (0)=0,
Advantageously, the 4th curve is to obtain according to following formula in the xy coordinate system of initial point with the light source in the lower surface of substrate:
Wherein, a is oval major semiaxis, and b be the semi-minor axis of ellipse, and the value of a is between 0.7 times of Rc to 0.9 times of Rc, and the value of b is between 0.35 times of Rc to 0.55 times of Rc, and Rc is constant, and Dl is the diameter of light source.
Advantageously, the 5th curve is that the xy coordinate system of initial point obtains according to following formula: f with the light source in first plane of symmetry " (x)＜0 ,-a＜x＜a; F ' (x
0)=0, x
0＜0, f (a)=f (a)=0.
Further advantageously, the 6th curve is to obtain according to following formula in the xy coordinate system of initial point with the light source in second plane of symmetry: f " (x)＜0 ,-b＜x＜b, f ' (0)=0, f (b)=f is (b)=0.
Another object of the present invention realizes by a kind of lighting device with the above-mentioned type.Has uniform brightness after each position reflection by plane of illumination of the light of this lighting device emission.
Description of drawings
Accompanying drawing constitutes 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 in the accompanying drawings parts are represented with identical label.Shown in the figure:
Fig. 1 is according to lighting device of the present invention schematic index path in actual applications;
Fig. 2 is the index path that lighting device according to the present invention is seen in the plane;
Fig. 3 is the stereo optical path figure according to lighting device of the present invention;
Fig. 4 is the reflection coefficient chart of each position of plane of illumination
Fig. 5 is the perspective view according to lens of the present invention;
Fig. 6 is the vertical view according to lens of the present invention;
Fig. 7 is the upward view according to lens of the present invention;
Fig. 8 a is the schematic diagram according to first curve of lens of the present invention;
Fig. 8 b is the schematic diagram according to second curve of lens of the present invention;
Fig. 8 c is the schematic diagram according to the 3rd curve of lens of the present invention;
Fig. 8 d is the schematic diagram according to the 4th curve of lens of the present invention;
Fig. 8 e is the schematic diagram according to the 5th curve of lens of the present invention
Fig. 8 f is the schematic diagram according to the 6th curve of lens of the present invention.
The specific embodiment
Fig. 1 shows according to lighting device 100 of the present invention schematic index path in actual applications.As seen from the figure, receive from the illuminance E of the light of exit facet 2 outgoing of the lens of lighting device 100 according to the present invention as the road surface of plane of illumination S, and people's eyes receive the brightness L by this road reflection that is illuminated when observing the street that this is illuminated.Lens according to the present invention that is to say that according to the design of brightness uniformity theory the brightness L that each position in street reflexes in observer's eye is uniform.And brightness L depends on the reflectance factor r of each position in illuminance E and street, that is to say L=E * r.After the reflectance factor r of each position of determining the street, can extrapolate from the illuminance E of each bar light of exit facet 2 outgoing, and can calculate the curved profile of exit facet 2 and the plane of incidence 4 thus.
Fig. 2 shows the index path that lighting device 100 according to the present invention is seen in the plane.Can be more clear from Fig. 2 see relation between brightness L and the illuminance E.In Fig. 2, by the ray cast of exit facet 2 outgoing of lens each position P1 to a certain regional S ' of plane of illumination S, P2 is on the P3.If the illuminance uniformity theory according to prior art designs lens, the illuminance E by the light of exit facet 2 outgoing can satisfy following formula, i.e. EP1=EP2=EP3 so, wherein, EP1, EP2 and EP3 are respectively and are transmitted into P1, P2, the illuminance of the light of P3.So based on the description in Fig. 1, the reflectance factor of each position that the observer observes is different, reflection will occur changing for observer's brightness L so, that is to say, LP1＞LP2＞LP3, wherein LP1, LP2, LP3 are respectively from the brightness of the light of P1, P2 and P3 reflection, and this causes the brightness of each position that the observer observes is inhomogeneous.
And lens of the present invention design according to the brightness uniformity theory, and the light path by the light of plane of illumination S reflection is uniformly so, i.e. LP1=LP2=LP3.But, because the reflectance factor of each position that the observer observes is different, so just need to adjust the illuminance E by the light of exit facet 2 outgoing, can extrapolate thus, this illuminance E is successively decreasing away from the direction of vertical photometer axis UQT, thereby different illuminance E that can each bar light calculates the curved profile of exit facet 2 and the plane of incidence 4.
Fig. 3 shows the stereo optical path figure according to lighting device 100 of the present invention.As can be known, observer's eyes are observed a certain regional S ' of the plane of illumination S on road surface from this index path, wherein, three observation place P1 shown in figure 2, P2 and P3 are in respectively among the S ' of this zone.In this accompanying drawing, only illustrate with one of them position P1.
According to design of the present invention, the reflectance factor r of the diverse location by making illuminance E and plane of illumination S is complementary to obtain uniform brightness L.And under the constant prerequisite of the brightness of each bar light of each position reflection by plane of illumination S, can obtain from the illuminance E of every light of lens outgoing, can calculate the vertical photometry angle γ and the light intensity I that determine this illuminance E, wherein vertical photometry angle γ is from the light of exit facet 2 outgoing and the angle of vertical photometer axis UQT.Wherein, illuminance E calculates by following formula and obtains:
Wherein, H is that light source 5 is apart from the vertical height of plane of illumination S.
In addition, calculate the reflectance factor r relevant with brightness L according to described vertical photometry angle γ and deviation angle β, wherein deviation angle β is that the first intersection point T of vertical photometer axis UQT and plane of illumination S is to from the first line TP and the angle of observer between the reverse extending line of the second line OP of residing position O on the described plane of illumination S and the second intersection point P between the second intersection point P of the light of exit facet outgoing and plane of illumination S.The reflection coefficient chart of each position by the plane of illumination shown in Fig. 4 can be obtained the value of reflectance factor.
Fig. 5 shows the perspective view according to lens of the present invention.Lens shown in the figure intercept by first plane of symmetry V1, and in order clearly to observe the internal structure of lens, Fig. 1 only shows the lens arrangement of the side of first plane of symmetry V1.As seen from the figure, lens according to the present invention have substrate 1 and the zone of projection from the substrate 1, to limit the container cavity 3 of the light source 5 that holds described lighting device 100, the side that the side away from light source 5 in the zone of projection forms exit facet 2 and close light source 5 forms the plane of incidence 4.
Fig. 6 shows according to the vertical view at lens of the present invention, and Fig. 7 shows the upward view according to lens of the present invention.Respectively as seen, exit facet 2 and the plane of incidence 4 be with respect to first plane of symmetry V1 mirror image symmetry of the optical axis A of described light source 5 from Fig. 6 and Fig. 7, and with respect to passing through optical axis A and perpendicular to the non-mirror image symmetry of second plane of symmetry V2 of first plane of symmetry V1.
In addition, from Fig. 6 and Fig. 7 further as seen, exit facet 2 comprises by the first curve 2a of the upper surface of substrate 1 intercepting, by the second curve 2b of first plane of symmetry V1 intercepting with by the 3rd curve 2c of second plane of symmetry V2 intercepting, and the plane of incidence 4 comprises by the 4th curve 4a of the lower surface intercepting of substrate 1, by the 5th curve 4b of first plane of symmetry V1 intercepting with by the 6th curve 4c of second plane of symmetry V2 intercepting.
Fig. 8 a shows the schematic diagram according to the first curve 2a of lens of the present invention.This curve approximation is in a circle as seen from the figure.This first curve 2a is to obtain according to following formula in the xy coordinate system of initial point with light source 5 in the upper surface of substrate 1: R (θ)=Rc+dr (θ),
Dr (θ)＜0.2 * Rc, wherein, the scope of θ is between 0 to 360 degree, and R (θ) is each distance to light source 5 on the first curve 2a, and Rc is constant, and Dl is the diameter of light source 5, dr (θ) is the variable that changes with angle θ.
Fig. 8 b shows the schematic diagram according to the second curve 2b of lens of the present invention.This second curve 2b is according to following formula: f in the xy coordinate system of initial point with light source 5 in first plane of symmetry V1 " (x)＜0 ,-Rc＜x＜Rc, f ' (0)=0,
Propose according to the present invention, this second curve 2b is non-mirror image symmetry with respect to second plane of symmetry V2, and the bearing of trend of the projection of this second curve 2b on the plane that substrate 1 limits is perpendicular to the longitudinal extension direction of plane of illumination S, in design of the present invention, plane of illumination S is the bearing of trend in street.
Fig. 8 c shows the schematic diagram according to the 3rd curve 2c of lens of the present invention.The 3rd curve 2c is to obtain according to following formula in the xy coordinate system of initial point with light source 5 in second plane of symmetry V2: f " (x)＜0 ,-Rc＜x＜Rc, f ' (0)=0,
Propose according to the present invention, the 3rd curve 2c is the mirror image symmetry with respect to first plane of symmetry V1, and the bearing of trend of the projection of the 3rd curve 2c on the plane that substrate 1 limits is parallel to the plane of illumination S longitudinal extension direction in street just.
Fig. 8 d shows the schematic diagram according to the 4th curve 4a of lens of the present invention.The 4th curve 4a forms oval-shaped curve at the lower surface of substrate, and wherein the 4th curve 4a is to obtain according to following formula in the xy coordinate system of initial point with light source 5 in the lower surface of substrate 1:
Wherein, a is oval major semiaxis, and b be the semi-minor axis of ellipse, and the value of a is between 0.7 times of Rc to 0.9 times of Rc, and the value of b is between 0.35 times of Rc to 0.55 times of Rc.Propose according to the present invention, the major semiaxis a of the 4th curve 4a is perpendicular to plane of illumination S, and the longitudinal extension direction in street just, and semi-minor axis b is parallel to the longitudinal extension direction in street.
Fig. 8 e shows the schematic diagram according to the 5th curve 4b of lens of the present invention.The 5th curve 4b in first plane of symmetry V1 with light source 5 be in the xy coordinate system of initial point according to following formula: f " (x)＜0 ,-a＜x＜a; F ' (x
0)=0, x
0＜0, f (a)=f (a)=0.According to the present invention, the 5th curve 4b is non-mirror image symmetry with respect to second plane of symmetry V2, and the bearing of trend of the projection of the 5th curve 4b on the plane that substrate limits is perpendicular to plane of illumination S, just the longitudinal extension direction in street.
Fig. 8 f shows the schematic diagram according to the 6th curve 4c of lens of the present invention.The 6th curve 4c is to obtain according to following formula in the xy coordinate system of initial point with light source 5 in second plane of symmetry V2: f " (x)＜0 ,-b＜x＜b, f ' (0)=0, f (b)=f is (b)=0.According to the present invention, the 6th curve 4c is the mirror image symmetry with respect to first plane of symmetry V1, and the bearing of trend of the projection of the 6th curve 4c on the plane that substrate 1 limits is parallel to the plane of illumination S longitudinal extension direction in street just.
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 changes and variation.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
100 lighting devices
1 substrate
2 exit facets
2a first curve
2b second curve
2c the 3rd curve
3 container cavities
4 planes of incidence
4a the 4th curve
4b the 5th curve
4c the 6th curve
5 light sources
V1 first plane of symmetry
V2 second plane of symmetry
The L brightness
The E illuminance
The r reflectance factor
The S plane of illumination
The a certain zone of S ' plane of illumination
The I light intensity
The vertical photometry of γ angle
The β deviation angle
The vertical photometer axis of UQT
The vertical height of the described plane of illumination S of H light source 5 distances
First intersection point of the vertical photometer axis UQT of T and plane of illumination S
TP first line
The O observer is residing position on plane of illumination S
OP second line
P1, P2, the observed position of a certain regional S ' of P3 plane of illumination S
Claims (14)
1. lens that are used for lighting device (100), the zone that described lens have substrate (1) and go up projection from described substrate (1), to limit the container cavity (3) of the light source (5) that holds described lighting device (100), the side that a side away from described light source (5) in the zone of described projection forms exit facet (2) and close described light source (5) forms the plane of incidence (4), it is characterized in that, described exit facet (2) and the described plane of incidence (4) are with respect to first plane of symmetry (V1) the mirror image symmetry of the optical axis (A) of the described light source of process (5), and with respect to through described optical axis (A) and perpendicular to the non-mirror image symmetry of second plane of symmetry (V2) of described first plane of symmetry (V1), wherein, the curve of described exit facet (2) and the described plane of incidence (4) so designs, and makes to produce uniform brightness (L) with all angles by (2) outgoing of described exit facet and after each position of the plane of illumination (S) of thing to be illuminated is reflected from the light of described light source (5) outgoing.
2. lens according to claim 1, it is characterized in that, the curve of described exit facet (2) and the described plane of incidence (4) so designs, make and have the described illuminance (E) of successively decreasing away from the direction of vertical photometer axis (UQT) from the light of described exit facet (2) outgoing, described illuminance (E) is complementary with the reflectance factor (r) of the diverse location of described plane of illumination (S), to obtain described uniform brightness (L).
3. lens according to claim 2, it is characterized in that, the curve of described exit facet (2) and the described plane of incidence (4) so designs, make and obtain predetermined vertical photometry angle (γ) and light intensity (I) from the light of described exit facet (2) outgoing, in the described illuminance (E) of successively decreasing away from the direction of described vertical photometer axis (UQT), wherein said vertical photometry angle (γ) is by the light of described exit facet (2) outgoing and the angle of described vertical photometer axis (UQT) with acquisition.
4. lens according to claim 3 is characterized in that, described illuminance (E) is calculated by following formula and obtained:
Wherein, H is the vertical height of described light source (5) the described plane of illumination of distance (S).
5. lens according to claim 3, it is characterized in that, calculate described reflectance factor (r) according to described vertical photometry angle (γ) and deviation angle (β), wherein said deviation angle (β) be first intersection point (T) of described vertical photometer axis (UQT) and described plane of illumination (S) to first line (TP) between second intersection point (P) of the light by described exit facet (2) outgoing and described plane of illumination (S) and observer the angle between the reverse extending line of second line (OP) of residing position (O) and described second intersection point (P) on the described plane of illumination (S).
6. according to each described lens in the claim 2 to 5, it is characterized in that, described exit facet (2) comprises by first curve (2a) of the upper surface of described substrate (1) intercepting, by second curve (2b) of described first plane of symmetry (V1) intercepting with by the 3rd curve (2c) of described second plane of symmetry (V2) intercepting, and the described plane of incidence (4) comprises by the 4th curve (4a) of the lower surface intercepting of described substrate (1), by the 5th curve (4b) of described first plane of symmetry (V1) intercepting with by the 6th curve (4c) of described second plane of symmetry (V2) intercepting.
7. lens according to claim 6 is characterized in that, described first curve (2a) is to obtain according to following formula in the xy coordinate system of initial point with described light source (5) in described upper surface: R (θ)=Rc+dr (θ),
Dr (θ)＜0.2 * Rc, wherein, the scope of θ is between 0 to 360 degree, R (θ) is that each point on described first curve (2a) is to the distance of described light source (5), Rc is constant, and Dl is the diameter of described light source (5), and dr (θ) is the variable that changes with angle θ.
8. lens according to claim 7, it is characterized in that described second curve (2b) is to obtain according to following formula in the xy coordinate system of initial point with described light source (5): f " (x)＜0 ,-Rc＜x＜Rc; f ' (0)=0 in described first plane of symmetry (V1)
9. lens according to claim 8, it is characterized in that described the 3rd curve (2c) is to obtain according to following formula in the xy coordinate system of initial point with described light source (5): f " (x)＜0 ,-Rc＜x＜Rc; f ' (0)=0 in described second plane of symmetry (V2)
10. lens according to claim 6 is characterized in that, described the 4th curve (4a) is to obtain according to following formula in the xy coordinate system of initial point with described light source (5) in described lower surface:
Wherein, a is oval major semiaxis, and b be the semi-minor axis of ellipse, and the value of a is between 0.7 times of Rc to 0.9 times of Rc, and the value of b is between 0.35 times of Rc to 0.55 times of Rc, and Rc is constant, and Dl is the diameter of described light source (5).
11. lens according to claim 10 is characterized in that, described the 5th curve (4b) is to obtain according to following formula in the xy coordinate system of initial point with described light source (5) in described first plane of symmetry (V1): f " (x)＜0 ,-a＜x＜a; F ' (x
0)=0, x
0＜0, f (a)=f (a)=0.
12. lens according to claim 11, it is characterized in that described the 6th curve (4c) is to obtain according to following formula in the xy coordinate system of initial point with described light source (5): " (x)＜0 ,-b＜x＜b; f ' (0)=0, f (b)=f (b)=0 for f in described second plane of symmetry (V2).
13. a lighting device (100) comprises light source, it is characterized in that, described lighting device (100) also comprises according to each described lens in the claim 1 to 12.
14. lighting device according to claim 13 (100) is characterized in that, described light source design is led light source.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210062319.8A CN103307548B (en) | 2012-03-09 | 2012-03-09 | Lens and lighting device with the lens |
| PCT/EP2013/054299 WO2013131860A1 (en) | 2012-03-09 | 2013-03-04 | Lens and illuminating device having the lens |
| EP13707017.3A EP2823348A1 (en) | 2012-03-09 | 2013-03-04 | Lens and illuminating device having the lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210062319.8A CN103307548B (en) | 2012-03-09 | 2012-03-09 | Lens and lighting device with the lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103307548A true CN103307548A (en) | 2013-09-18 |
| CN103307548B CN103307548B (en) | 2018-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210062319.8A Active CN103307548B (en) | 2012-03-09 | 2012-03-09 | Lens and lighting device with the lens |
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| Country | Link |
|---|---|
| EP (1) | EP2823348A1 (en) |
| CN (1) | CN103307548B (en) |
| WO (1) | WO2013131860A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644532A (en) * | 2013-12-16 | 2014-03-19 | 宜兴市宏力灯杆灯具有限公司 | Method and device for greatly increasing irradiation range of street lamp |
| CN103712159A (en) * | 2013-12-20 | 2014-04-09 | 深圳朗照光电有限公司 | Orientated light-emitting polarized light LED lens |
| CN103836534A (en) * | 2012-11-27 | 2014-06-04 | 欧司朗有限公司 | Lens and lighting device with the same |
| CN105627195A (en) * | 2016-01-30 | 2016-06-01 | 深圳市邦贝尔电子有限公司 | Novel light-emitting diode (LED) projection lamp |
| CN107816701A (en) * | 2017-01-20 | 2018-03-20 | 佛山市中山大学研究院 | A kind of downward back optical lens with non-smooth curve |
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| CN201539815U (en) * | 2009-12-09 | 2010-08-04 | 玉晶光电股份有限公司 | Lens structure |
| WO2011042837A1 (en) * | 2009-10-08 | 2011-04-14 | Koninklijke Philips Electronics N.V. | Lens for asymetrical light beam generation. |
| TW201200798A (en) * | 2010-06-25 | 2012-01-01 | Alliance Optotek Co Ltd | Optic element of lighting device and design method thereof |
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- 2013-03-04 EP EP13707017.3A patent/EP2823348A1/en not_active Withdrawn
- 2013-03-04 WO PCT/EP2013/054299 patent/WO2013131860A1/en active Application Filing
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|---|---|---|---|---|
| US20030058652A1 (en) * | 2001-09-21 | 2003-03-27 | Nsi Enterprises, Inc. | Luminaire lens |
| CN101482652A (en) * | 2009-02-12 | 2009-07-15 | 复旦大学 | Light distribution lens design method aiming at point light source |
| WO2011042837A1 (en) * | 2009-10-08 | 2011-04-14 | Koninklijke Philips Electronics N.V. | Lens for asymetrical light beam generation. |
| CN201539815U (en) * | 2009-12-09 | 2010-08-04 | 玉晶光电股份有限公司 | Lens structure |
| TW201200798A (en) * | 2010-06-25 | 2012-01-01 | Alliance Optotek Co Ltd | Optic element of lighting device and design method thereof |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836534A (en) * | 2012-11-27 | 2014-06-04 | 欧司朗有限公司 | Lens and lighting device with the same |
| CN103836534B (en) * | 2012-11-27 | 2018-04-24 | 欧司朗有限公司 | Lens and the lighting device with the lens |
| CN103644532A (en) * | 2013-12-16 | 2014-03-19 | 宜兴市宏力灯杆灯具有限公司 | Method and device for greatly increasing irradiation range of street lamp |
| WO2015090134A1 (en) * | 2013-12-16 | 2015-06-25 | 宏力照明集团有限公司 | Method and device for greatly increasing irradiation range of street lamp |
| CN103644532B (en) * | 2013-12-16 | 2015-08-26 | 宏力照明集团有限公司 | Increase substantially method and the device of Street Light Illumination scope |
| US9784429B2 (en) | 2013-12-16 | 2017-10-10 | Hongli Lighting Group Co., Ltd. | Method and device for greatly increasing irradiation range of street lamp |
| CN103712159A (en) * | 2013-12-20 | 2014-04-09 | 深圳朗照光电有限公司 | Orientated light-emitting polarized light LED lens |
| CN105627195A (en) * | 2016-01-30 | 2016-06-01 | 深圳市邦贝尔电子有限公司 | Novel light-emitting diode (LED) projection lamp |
| CN105627195B (en) * | 2016-01-30 | 2020-05-01 | 深圳市邦贝尔电子有限公司 | Novel LED projecting lamp |
| CN107816701A (en) * | 2017-01-20 | 2018-03-20 | 佛山市中山大学研究院 | A kind of downward back optical lens with non-smooth curve |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013131860A1 (en) | 2013-09-12 |
| CN103307548B (en) | 2018-08-10 |
| EP2823348A1 (en) | 2015-01-14 |
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