CN103307548B - Lens and lighting device with the lens - Google Patents
Lens and lighting device with the lens Download PDFInfo
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- CN103307548B CN103307548B CN201210062319.8A CN201210062319A CN103307548B CN 103307548 B CN103307548 B CN 103307548B CN 201210062319 A CN201210062319 A CN 201210062319A CN 103307548 B CN103307548 B CN 103307548B
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- 238000005286 illumination Methods 0.000 claims abstract description 41
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 238000005375 photometry Methods 0.000 claims description 29
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 12
- 238000004020 luminiscence type Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
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
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/103—Outdoor lighting of streets or roads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lenses (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The present invention relates to a kind of lens being used for lighting device (100),It is with substrate (1) and raised region from substrate (1),To limit the accommodating chamber for the light source (5) for accommodating lighting device (100),The side of the separate light source (5) in the region of protrusion is designed as exit facet (2) and is designed as the plane of incidence (4) by the side of close to sources (5),Wherein exit facet (2) and the plane of incidence (4) relative to the optical axis (A) by light source (5) first plane of symmetry (V1) mirror symmetry and relative to by optical axis (A) and perpendicular to second plane of symmetry (V2) lacks mirror-symmetry of first plane of symmetry (V1),Wherein,The curve of exit facet (2) and the plane of incidence (4) so designs,So that the light being emitted from light source (5) generates uniform brightness (L) later with all angles by each position reflection of exit facet (2) outgoing and the plane of illumination (S) through object to be illuminated.The invention further relates to a kind of lighting devices (100) of lens with the above-mentioned type.
Description
Technical field
The present invention relates to a kind of lens for lighting device.Moreover, it relates to a kind of with the above-mentioned type
The lighting device of lens.
Background technology
LED luminescence components are widely used in street lighting.But the light distribution performance of LED luminescence components cannot
Meet the requirement of street lighting, it is therefore necessary to install a secondary lens additional at the top of LED luminescence components.It is nearly all existing
Lens are all based on the design of illuminance uniformity theory.Street lamp can be made to obtain by such lens highly uniform
Illuminance.But the eyes of observer receive the brightness from road surface, and brightness itself depends on illuminance and road surface
Reflectance factor, when observer is in different location relative to street lamp, the reflectance factor on road surface also has different variations, still
The illuminance obtained by lens according to prior art is uniform, that is to say, that the light of street lamp transmitting is in different positions
The illuminance set is identical, then observer is different in the brightness received by the different positions, this causes
The illuminance of one problem, i.e., the light emitted using the lighting device of lens in the prior art is uniform, but road surface
The brightness of the light reflected is inadequate.
Invention content
In order to solve the above technical problems, the present invention proposes a kind of lens being used for lighting device, especially street lamp, this is thoroughly
Mirror is designed based on brightness uniformity theory, and the light being emitted by lens according to the present invention is equal by having after road reflection
Even brightness.Moreover, it relates to a kind of lighting device of the lens with the above-mentioned type.
First purpose of the present invention is achieved in by a kind of lens for lighting device, i.e., the lens have substrate
With region raised from substrate, with limit accommodate lighting device light source accommodating chamber, the separate light source in raised region
Side be designed as exit facet and be designed as the plane of incidence by the side of close to sources, wherein exit facet and the plane of incidence is relative to process
First plane of symmetry mirror symmetry of the optical axis of light source and relative to by optical axis and second perpendicular to first plane of symmetry symmetrical
Face lacks mirror-symmetry, wherein the curve of exit facet and the plane of incidence so designs so that the light being emitted from light source is with all angles
Uniform brightness is generated by the plane of incidence and exit facet and after the reflection of each position of the plane of illumination through object to be illuminated.Root
It is designed based on brightness uniformity theory according to the lens of the present invention, that is to say, that setting is by each of plane of illumination first
The brightness of light after the reflection of position is uniform, to reversely extrapolate the curved profile of the plane of incidence and exit facet.
One according to the present invention preferred design scheme proposes that the curve of exit facet and the plane of incidence so designs so that
There is the illuminance successively decreased on the direction far from vertical photometry axis from the light of exit face, illuminance and plane of illumination
The reflectance factor of different location matches, to obtain uniform brightness.According to the relationship of illuminance and brightness it is found that light
Degree depends not only on illuminance, but also the reflectance factor of the different location depending on plane of illumination.Brightness is being determined
Under the premise of, it can extrapolate and successively decrease on the direction far from vertical photometry axis from the illuminance of the light of exit face.
According to present invention further propose that, the curve of exit facet and the plane of incidence so designs so that from exit face
Light obtains scheduled vertical photometry angle γ and light intensity I, to obtain the illuminance successively decreased on the direction far from vertical photometry axis,
Wherein vertical photometry angle is the angle from the light and vertical photometry axis of exit face.Preferably, illuminance passes through following
Formula, which calculates, to be obtained：Wherein, H is the vertical height of light source distance plane of illumination.In the design of the present invention
In scheme, illuminance is substantially dependent on from the vertical photometry angle of the light of exit face and light intensity.In design according to this hair
When bright lens, since the brightness that each position of plane of illumination is reflected to observer is uniform, then can obtain from
The vertical photometry angle of each light of lens outgoing and light intensity, it is possible thereby to be known by each light by dedicated optical model
The coordinate of the point intersected with the plane of incidence and exit facet in three dimensions, so that it is determined that the curved profile of the plane of incidence and exit facet.
One according to the present invention preferred design scheme proposes, reflection system is calculated according to vertical photometry angle and deviation angle
Number, wherein deviation angle are the first intersection point of vertical photometry axis and plane of illumination to the light and plane of illumination from exit face
The first line between second intersection point is anti-with the second line of the second intersection point the location of on plane of illumination with observer
To the angle between extended line.In the design scheme of the present invention, the angular range at vertical photometry angle between 0 degree to 90 degree simultaneously
And the angular range of deviation angle at 0 degree between 180 degree.
Preferably, exit facet includes the first curve intercepted by the upper surface of substrate, intercepted by first plane of symmetry the
Two curves and the third curve intercepted by second plane of symmetry, and the plane of incidence includes the 4th song intercepted by the lower surface of substrate
Line, the 5th curve by the interception of first plane of symmetry and the 6th curve by the interception of second plane of symmetry.Exit facet and the plane of incidence it is each
Curve cooperates to generate the light of the outgoing with scheduled vertical photometry angle and light intensity.
Advantageously, the first curve in the upper surface of substrate using light source as the xy coordinate systems of origin according to following public affairs
Formula obtains：R (θ)=Rc+dr (θ),0.2 × Rc of dr (θ) ＜, wherein the range of θ is between 0 to 360 degree, R
(θ) is distance of each point on the first curve to light source, and Rc is constant, and Dl is the diameter of light source, and dr (θ) is to become with angle, θ
The variable of change.In the design scheme of the present invention, light source is LED light source, wherein the diameter of single LED light source is generally 1 to 5mm
Between.
Advantageously, the second curve in first plane of symmetry using the light source as the xy coordinate systems of origin according to following
Formula：F " (x) ＜ 0 ,-Rc ＜ x ＜ Rc, f ' (0)=0,
It is further favourable that third curve in second plane of symmetry using the light source as the xy coordinate systems of origin
It is middle to be obtained according to following formula：F " (x) ＜ 0 ,-Rc ＜ x ＜ Rc, f ' (0)=0,
Advantageously, the 4th curve in the lower surface of substrate using light source as the xy coordinate systems of origin according to following public affairs
Formula obtains： Wherein, a is elliptical major semiaxis, and b is elliptical semi-minor axis, and the value of a exists
Between 0.7 times of Rc to 0.9 times of Rc, for the value of b between 0.35 times of Rc to 0.55 times of Rc, Rc is constant, and Dl is the diameter of light source.
Advantageously, the 5th curve being obtained according to following formula by the xy coordinate systems of origin of light source in first plane of symmetry
：F " (x) ＜ 0 ,-a ＜ x ＜ a；f′(x0)=0, x0＜ 0, f (a)=f (- a)=0.
It is further favourable that the 6th curve in second plane of symmetry using light source as the xy coordinate systems of origin according to
Lower formula obtains：F " (x) ＜ 0 ,-b ＜ x ＜ b, f ' (0)=0, f (b)=f (- b)=0.
Another object of the present invention is realized by a kind of lighting device with the above-mentioned type.The light of lighting device transmitting
There is uniform brightness after each position reflection that line passes through plane of illumination.
Description of the drawings
Attached drawing forms part of this specification, and is used to help further understand the present invention.These attached drawings illustrate this hair
Bright embodiment, and be used for illustrating the principle of the present invention together with specification.The identical label of identical component in the accompanying drawings
It indicates.It is shown in figure：
Fig. 1 is the schematic index path of lighting device according to the present invention in practical 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 of lighting device according to the present invention；
Fig. 4 is the reflection coefficient chart of each position of plane of illumination
Fig. 5 is the perspective view of lens according to the present invention；
Fig. 6 is the vertical view of lens according to the present invention；
Fig. 7 is the upward view of lens according to the present invention；
Fig. 8 a are the schematic diagrames of the first curve of lens according to the present invention；
Fig. 8 b are the schematic diagrames of the second curve of lens according to the present invention；
Fig. 8 c are the schematic diagrames of the third curve of lens according to the present invention；
Fig. 8 d are the schematic diagrames of the 4th curve of lens according to the present invention；
Fig. 8 e are the schematic diagrames of the 5th curve of lens according to the present invention
Fig. 8 f are the schematic diagrames of the 6th curve of lens according to the present invention.
Specific implementation mode
Fig. 1 shows the schematic index path of lighting device 100 according to the present invention in practical applications.It can from figure
See, the road surface as plane of illumination S receives the light being emitted from the exit facet 2 of the lens of lighting device 100 according to the present invention
Illuminance E, and the eyes of people are when observing the street being illuminated, and receive the brightness L by the road reflection being illuminated.
Lens according to the present invention are designed according to brightness uniformity theory, that is to say, that each position in street is reflected into observer
Brightness L in eye is uniform.And brightness L depends on the reflectance factor r of each position in illuminance E and street,
That is L=E × r.After the reflectance factor r for each position for determining street, can extrapolate be emitted from exit facet 2 it is each
The illuminance E of light, and it is possible thereby to calculate the curved profile of exit facet 2 and the plane of incidence 4.
Fig. 2 shows the index paths that lighting device 100 according to the present invention is seen in the plane.It can be more clear from Fig. 2
The clear clear relationship seen between brightness L and illuminance E.In fig. 2, it is projected by the light that the exit facet of lens 2 is emitted
To each position P1 of a certain region S ' of plane of illumination S, on P2, P3.If the illuminance uniformity is managed according to prior art
By designing lens, then the illuminance E for the light being emitted by exit facet 2 can meet following formula, i.e. EP1=EP2=EP3,
Wherein, EP1, EP2 and EP3 are respectively to be emitted to P1, the illuminance of the light of P2, P3.So based on description in Fig. 1, see
The reflectance factor of each position of the person's of examining observation is different, then the brightness L for being reflected to observer just will appear variation,
That is LP1 ＞ LP2 ＞ LP3, wherein LP1, LP2, LP3 are respectively the brightness from P1, P2 and P3 light reflected, this leads
It is non-uniform to cause the brightness of each position of observer's observation.
And the lens of the present invention are designed according to brightness uniformity theory, then the light reflected by plane of illumination S
The light path of line is uniform, i.e. LP1=LP2=LP3.But since the reflectance factor of each position of observer's observation is not
With, then just needs adjust the illuminance E for the light being emitted by exit facet 2, it is possible thereby to extrapolate, E is remote for the illuminance
Successively decrease on direction from vertical photometry axis UQT, the different illuminance E so as to each light calculate exit facet 2 and enter
Penetrate the curved profile in face 4.
Fig. 3 shows the stereo optical path figure of lighting device 100 according to the present invention.It is found that observer from the index path
The plane of illumination S for being visually observed road surface a certain region S ', wherein it is shown in figure 2 three observation position P1, P2 and
P3 is respectively in the S ' of the region.In this attached drawing, only illustrated with one of position P1.
Design scheme according to the present invention, by making reflectance factor r phases of the illuminance E with the different location of plane of illumination S
It matches to obtain uniform brightness L.And it is constant by the brightness of each light of each position of plane of illumination S reflection
Under the premise of, the illuminance E for every light being emitted from lens is can get, the vertical photometry for determining illuminance E can be calculated
Angle γ and light intensity I, wherein vertical photometry angle γ are the angle of the light and vertical photometry axis UQT that are emitted from exit facet 2.Wherein,
Illuminance E is calculated by the following formula acquisition：Wherein, H is vertical height of the light source 5 apart from plane of illumination S
Degree.
In addition, according to the vertical photometry angle γ and deviation angle β calculate with the relevant reflectance factor r of brightness L, wherein
The first intersection point T that deviation angle β is vertical photometry axis UQT and plane of illumination S is to the light from exit face with plane of illumination S's
The first line TP between second intersection point P with observer the location of on the plane of illumination S O and the second intersection point P the
Angle between the reverse extending line of two line OP.Pass through the reflection coefficient chart of each position of the plane of illumination shown in Fig. 4
The value of reflectance factor can be found out.
Fig. 5 shows the perspective view of lens according to the present invention.Lens shown in figure are carried out by the first plane of symmetry V1
Interception, in order to be clearly observed the internal structure of lens, Fig. 1 illustrate only the saturating of the side of the first plane of symmetry V1
Mirror structure.It can be seen that lens according to the present invention have substrate 1 and raised region from substrate 1, accommodated with limiting
The accommodating chamber 3 of the light source 5 of the lighting device 100, the side of the separate light source 5 in raised region be formed as exit facet 2 and
Be formed as the plane of incidence 4 by the side of close to sources 5.
Fig. 6 shows that the vertical view according to the lens in the present invention, Fig. 7 show looking up for lens according to the present invention
Figure.Respectively as it can be seen that the first plane of symmetry V1 of exit facet 2 and the plane of incidence 4 relative to the optical axis A of the light source 5 from Fig. 6 and Fig. 7
Mirror symmetry, and relative to by optical axis A and perpendicular to the second plane of symmetry V2 lacks mirror-symmetry of the first plane of symmetry V1.
In addition, furthermore, it can be seen that exit facet 2 includes the first curve intercepted by the upper surface of substrate 1 from Fig. 6 and Fig. 7
2a, the second curve 2b by the first plane of symmetry V1 interceptions and the third curve 2c by the second plane of symmetry V2 interceptions, and the plane of incidence 4
Include the 4th curve 4a intercepted by the lower surface of substrate 1, by the 5th curve 4b of the first plane of symmetry V1 interceptions and by second pair
6th curve 4c of title face V2 interceptions.
Fig. 8 a show the schematic diagram of the first curve 2a of lens according to the present invention.As seen from the figure the curve approximation in
One circle.The first curve 2a in the upper surface of substrate 1 with light source 5 to be obtained according to following formula in the xy coordinate systems of origin
：R (θ)=Rc+dr (θ),0.2 × Rc of dr (θ) ＜, wherein the range of θ is between 0 to 360 degree, R (θ)
For the distance of each point on the first curve 2a to light source 5, Rc is constant, and Dl is the diameter of light source 5, and dr (θ) is to become with angle, θ
The variable of change.
Fig. 8 b show the schematic diagram of the second curve 2b of lens according to the present invention.The second curve 2b is symmetrical first
In the V1 of face with light source 5 in the xy coordinate systems of origin according to following formula：F " (x) ＜ 0 ,-Rc ＜ x ＜ Rc, f ' (0)=0,It is proposed, according to the invention, that the second curve 2b is lacks mirror-symmetry relative to the second plane of symmetry V2, and
The longitudinal extension for extending perpendicularly to plane of illumination S of projections of the second curve 2b in the plane that substrate 1 limits,
In the design scheme of the present invention, plane of illumination S is the extending direction in street.
Fig. 8 c show the schematic diagram of the third curve 2c of lens according to the present invention.The third curve 2c is symmetrical second
In the V2 of face with light source 5 to be obtained according to following formula in the xy coordinate systems of origin：F " (x) ＜ 0 ,-Rc ＜ x ＜ Rc, f ' (0)=
0,It is proposed, according to the invention, that the third curve 2c is mirror symmetry relative to the first plane of symmetry V1, and
The extending direction of projections of the third curve 2c in the plane that substrate 1 limits is parallel to the vertical of plane of illumination S i.e. street
To extending direction.
Fig. 8 d show the schematic diagram of the 4th curve 4a of lens according to the present invention.4th curve 4a is under substrate
Be formed as the curve of ellipse on surface, wherein the 4th curve 4a in the lower surface of substrate 1 is the xy of origin with light source 5
It is obtained according to following formula in coordinate system： Wherein, a is elliptical major semiaxis, and b is elliptical
Semi-minor axis, and the value of a, between 0.7 times of Rc to 0.9 times of Rc, the value of b is between 0.35 times of Rc to 0.55 times of Rc.According to this hair
Bright proposition, the major semiaxis a of the 4th curve 4a is perpendicular to the longitudinal extension of plane of illumination S, that is, street, and semi-minor axis
B is parallel to the longitudinal extension in street.
Fig. 8 e show the schematic diagram of the 5th curve 4b of lens according to the present invention.5th curve 4b is symmetrical first
In the V1 of face with light source 5 in the xy coordinate systems of origin according to following formula：F " (x) ＜ 0 ,-a ＜ x ＜ a；f′(x0)=0, x0＜
0, f (a)=f (- a)=0.According to the present invention, the 5th curve 4b is lacks mirror-symmetry relative to the second plane of symmetry V2, and
Projections of the 5th curve 4b in the plane that substrate limits extends perpendicularly to plane of illumination S, that is, street is vertical
To extending direction.
Fig. 8 f show the schematic diagram of the 6th curve 4c of lens according to the present invention.6th curve 4c is symmetrical second
In the V2 of face with light source 5 to be obtained according to following formula in the xy coordinate systems of origin：F " (x) ＜ 0 ,-b ＜ x ＜ b, f ' (0)=0,
F (b)=f (- b)=0.According to the present invention, the 6th curve 4c is mirror symmetry relative to the first plane of symmetry V1, and this
Prolong the longitudinal direction that the extending direction of projections of the six curve 4c in the plane that substrate 1 limits is parallel to plane of illumination S i.e. street
Stretch direction.
It these are only the preferred embodiment of the present invention, be not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification made by all within the spirits and principles of the present invention, etc.
With replacement, improvement etc., should all be included in the protection scope of the present invention.
Reference label
100 lighting devices
1 substrate
2 exit facets
The first curves of 2a
The second curves of 2b
2c third curves
3 accommodating chambers
4 planes of incidence
The 4th curves of 4a
The 5th curves of 4b
The 6th curves of 4c
5 light sources
First planes of symmetry of V1
Second planes of symmetry of V2
L brightness
E illuminance
R reflectance factors
S plane of illuminations
The a certain region of S ' plane of illuminations
I light intensity
γ vertical photometries angle
β deviation angles
UQT vertical photometry axis
Vertical height of the H light sources 5 apart from the plane of illumination S
The first intersection point of T vertical photometry axis UQT and plane of illumination S
The first lines of TP
O observers are the location of on plane of illumination S
The second lines of OP
The observed position of a certain region S ' of P1, P2, P3 plane of illumination S
Claims (10)
1. one kind being used for the lens of lighting device (100), the lens are raised with substrate (1) and from the substrate (1)
Region, to limit the accommodating chamber (3) for the light source (5) for accommodating the lighting device (100), the separate institute in the region of the protrusion
The side for stating light source (5) is formed as exit facet (2) and is formed as the plane of incidence (4), feature close to the side of the light source (5)
It is, first plane of symmetry of the exit facet (2) and the plane of incidence (4) relative to the optical axis (A) by the light source (5)
(V1) mirror symmetry, and relative to by the optical axis (A) and perpendicular to second plane of symmetry of first plane of symmetry (V1)
(V2) lacks mirror-symmetry, wherein the curve of the exit facet (2) and the plane of incidence (4) so designs so that from the outgoing
The light of face (2) outgoing has the illuminance (E) successively decreased on the direction far from vertical photometry axis (UQT), the exit facet (2)
It is so designed with the curve of the plane of incidence (4) so that the light being emitted from the light source (5) is gone out with all angles described in
The each position reflection for penetrating face (2) outgoing and the plane of illumination (S) through object to be illuminated generates uniform brightness (L) later, makes
It obtains the light being emitted from the exit facet (2) and obtains scheduled vertical photometry angle (γ) and light intensity (I), to obtain far from described
The illuminance (E) successively decreased on the direction of vertical photometry axis (UQT), wherein the vertical photometry angle (γ) be by it is described go out
The angle of the light and the vertical photometry axis (UQT) of face (2) outgoing is penetrated, the illuminance (E), which is calculated by the following formula, to be obtained
：Wherein, H is vertical height of the light source (5) apart from the plane of illumination (S), E is illuminance, I
It is vertical photometry angle for light intensity and γ, wherein the reflectance factor of the illuminance (E) and the different location of plane of illumination (S)
(r) match, to obtain uniform brightness (L), wherein calculating institute according to the vertical photometry angle (γ) and deviation angle (β)
Reflectance factor (r) is stated, is handed over the first of the plane of illumination (S) wherein the deviation angle (β) is the vertical photometry axis (UQT)
Point (T) to first between the light and the second intersection point (P) of the plane of illumination (S) being emitted by the exit facet (2) connects
The second line (OP) of line (TP) (O) and second intersection point (P) the location of on the plane of illumination (S) with observer
Reverse extending line between angle.
2. lens according to claim 1, which is characterized in that the exit facet (2) includes by the upper table of the substrate (1)
Face interception the first curve (2a), by first plane of symmetry (V1) interception the second curve (2b) and by second plane of symmetry
(V2) the third curve (2c) intercepted, and the plane of incidence (4) includes the 4th song intercepted by the lower surface of the substrate (1)
Line (4a), the 5th curve (4b) intercepted by first plane of symmetry (V1) and the intercepted by second plane of symmetry (V2) the 6th
Curve (4c).
3. lens according to claim 2, which is characterized in that first curve (2a) in the upper surface with institute
It states and is obtained according to following formula in the xy coordinate systems that light source (5) is origin：R (θ)=Rc+dr (θ),dr(θ)
0.2 × Rc of ＜, wherein for the range of θ between 0 to 360 degree, R (θ) is each point on first curve (2a) to the light
The distance in source (5), Rc are constant, and Dl is the diameter of the light source (5), and dr (θ) is the variable changed with angle, θ.
4. lens according to claim 3, which is characterized in that second curve (2b) is in first plane of symmetry (V1)
In with the light source (5) be origin xy coordinate systems in obtained according to following formula：F " (x) ＜ 0 ,-Rc ＜ x ＜ Rc, f'(0)
=0,
5. lens according to claim 4, which is characterized in that the third curve (2c) is in second plane of symmetry (V2)
In with the light source (5) be origin xy coordinate systems in obtained according to following formula：F " (x) ＜ 0 ,-Rc ＜ x ＜ Rc, f'(0)
=0,
6. lens according to claim 2, which is characterized in that the 4th curve (4a) in the lower surface with institute
It states and is obtained according to following formula in the xy coordinate systems that light source (5) is origin：Wherein, a is
Elliptical major semiaxis, b is elliptical semi-minor axis, and the value of a, between 0.7 times of Rc to 0.9 times of Rc, the value of b is in 0.35 times of Rc
To between 0.55 times of Rc, Rc is constant, and Dl is the diameter of the light source (5).
7. lens according to claim 6, which is characterized in that the 5th curve (4b) is in first plane of symmetry (V1)
In with the light source (5) be origin xy coordinate systems in obtained according to following formula：F " (x) ＜ 0 ,-a ＜ x ＜ a；f'(x0)
=0, x0＜ 0, f (a)=f (- a)=0.
8. lens according to claim 7, which is characterized in that the 6th curve (4c) is in second plane of symmetry (V2)
In with the light source (5) be origin xy coordinate systems in obtained according to following formula：F " (x) ＜ 0 ,-b ＜ x ＜ b, f'(0)=
0, f (b)=f (- b)=0.
9. a kind of lighting device (100), including light source, which is characterized in that the lighting device (100) further includes being wanted according to right
Seek the lens described in any one of 1 to 8.
10. lighting device (100) according to claim 9, which is characterized in that the 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 |
| EP13707017.3A EP2823348A1 (en) | 2012-03-09 | 2013-03-04 | Lens and illuminating device having the lens |
| PCT/EP2013/054299 WO2013131860A1 (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 CN103307548A (en) | 2013-09-18 |
| CN103307548B true CN103307548B (en) | 2018-08-10 |
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Family Applications (1)
| 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 |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2823348A1 (en) |
| CN (1) | CN103307548B (en) |
| WO (1) | WO2013131860A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836534B (en) * | 2012-11-27 | 2018-04-24 | 欧司朗有限公司 | Lens and the lighting device with the lens |
| 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 |
| 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 |
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201200798A (en) * | 2010-06-25 | 2012-01-01 | Alliance Optotek Co Ltd | Optic element of lighting device and design method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6726345B2 (en) * | 2001-09-21 | 2004-04-27 | Acuity Brands, Inc. | Luminaire lens |
| CN101482652B (en) * | 2009-02-12 | 2010-09-29 | 复旦大学 | A Design Method for Light Distribution Lens for Point Light Source |
| EP2486605B1 (en) * | 2009-10-08 | 2017-09-13 | Philips Lighting Holding B.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 |
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- 2012-03-09 CN CN201210062319.8A patent/CN103307548B/en active Active
-
2013
- 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
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201200798A (en) * | 2010-06-25 | 2012-01-01 | Alliance Optotek Co Ltd | Optic element of lighting device and design method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103307548A (en) | 2013-09-18 |
| WO2013131860A1 (en) | 2013-09-12 |
| EP2823348A1 (en) | 2015-01-14 |
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