CN107166180A - Light fixture - Google Patents
Light fixture Download PDFInfo
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- CN107166180A CN107166180A CN201710449032.3A CN201710449032A CN107166180A CN 107166180 A CN107166180 A CN 107166180A CN 201710449032 A CN201710449032 A CN 201710449032A CN 107166180 A CN107166180 A CN 107166180A
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- light
- light source
- collimating element
- flourescent sheet
- laser
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
-
- 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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
-
- 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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/12—Combinations of only three kinds of elements
- F21V13/14—Combinations of only three kinds of elements the elements being filters or photoluminescent elements, reflectors and refractors
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
-
- 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
- F21Y2115/30—Semiconductor lasers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
A kind of light fixture, including light source are proposed, light source includes laser diode and flourescent sheet, and the Laser Focusing that laser diode is sent is in flourescent sheet and excites flourescent sheet to send fluorescence；Light collimating element, for receiving light that light source sends and being collimated outgoing, the subtended angle of the effective aperture facing light sources luminous point of the light collimating element is A, and A is not more than 60 degree.The Laser Focusing that laser diode is sent because laser is the coherent light that is sent by the luminescence chip of very little, can form very small luminous spot, so can just form highly collimated light beam according to optical theory in flourescent sheet.The experiment conclusion found simultaneously using inventor, control light collimating element is less than 60 degree to the subtended angle of light source luminescent point, so can further improve the collimation of collimated light beam.Highly collimated outgoing beam is so can be obtained by, it is outer big all without obvious diffusion change at several meters even tens meters.Such light beam has many use in decorative lighting.
Description
Technical field
The present invention relates to lighting field, particularly decorative lighting field.
Background technology
Light fixture belongs to traditional field, and various light fixture species are various.After LED occurs, the light fixture using LED as light source is also layer
Go out not poor.However as the improvement of people's living standards, there is higher and higher demand to illumination, especially decorative lighting, and
There is presently no fully met for this demand.
The content of the invention
The present invention proposes a kind of light fixture, including light source, including laser diode and flourescent sheet, and what laser diode was sent swashs
Light focuses on flourescent sheet and excites flourescent sheet to send fluorescence；Light collimating element, for receiving light that light source sends and being collimated
Outgoing, the subtended angle of the effective aperture facing light sources luminous point of the light collimating element is A, and A is not more than 60 degree.
In the present invention, the Laser Focusing that laser diode is sent is in flourescent sheet, because laser is the luminous core by very little
The coherent light that piece is sent, can form very small luminous spot, so can just form highly collimated according to optical theory
Light beam.The experiment conclusion found simultaneously using inventor, control light collimating element is less than 60 degree to the subtended angle of light source luminescent point,
It so can further improve the collimation of collimated light beam.Highly collimated outgoing beam is so can be obtained by, at several meters
It is even tens meters outer big all without obvious diffusion change.Such light beam has many use in decorative lighting.
Brief description of the drawings
Fig. 1 illustrates the structural representation of the light fixture of first embodiment of the invention；
Fig. 2 illustrates the structural representation of the light fixture of another embodiment of the present invention；
Fig. 3 illustrates the structural representation of the light fixture of another embodiment of the present invention；
Fig. 4 illustrates the structural representation of the light fixture of another embodiment of the present invention；
Fig. 5 a illustrate the structural representation of light source in another embodiment of the present invention light fixture；
Fig. 5 b illustrate the structural representation of light source in another embodiment of the present invention light fixture；
Fig. 6 a illustrate the light path that fluorescence spreads in transparent thermal conductive substrate in Fig. 5 a illustrated embodiments；
Fig. 6 b illustrate the front view of fluoresent coating in Fig. 5 a illustrated embodiments；
Fig. 7 a illustrate the structural representation of light source in another embodiment of the present invention light fixture；
Fig. 7 b illustrate the structural representation of light source in another embodiment of the present invention light fixture；
Fig. 7 c illustrate the front view of fluoresent coating and diaphragm piece in another embodiment of the present invention light fixture；
Fig. 8 a illustrate the structural representation of light source in another embodiment of the present invention light fixture；
Fig. 8 b illustrate the front view of fluoresent coating in another embodiment of the present invention light fixture；
Fig. 9 a illustrate the structural representation of the light fixture of first embodiment of the invention；
Fig. 9 b illustrate light-source structure schematic diagram in the light fixtures of Fig. 9 a embodiments；
Figure 10 a illustrate the structural representation of another light source in Fig. 9 a embodiment light fixtures；
Figure 10 b illustrate the differentiation in flourescent sheet both sides of light beam in Figure 10 a embodiments；
Figure 11 illustrates the structural representation of the light fixture of another embodiment of the present invention；
Figure 12 illustrates the structural representation of the light fixture of another embodiment of the present invention；
Figure 13 illustrates the structural representation of the light fixture of another embodiment of the present invention；
Figure 14 illustrates the structural representation of the light fixture of another embodiment of the present invention；
Figure 15 illustrates the structural representation of the light fixture of another embodiment of the present invention.
Embodiment
The present invention proposes a kind of light fixture, and its structural representation is as shown in Figure 1.The light fixture includes light source 119 and light collimation member
Part 113, wherein light source 119 include laser diode 111 and flourescent sheet 112, and the laser 121 that laser diode 111 is sent is focused on
In flourescent sheet 112 and flourescent sheet is excited to send fluorescence 122 and 123.Light collimating element 113 is used to receive the light that light source 119 is sent
And collimated to form the outgoing of collimated light 124, the subtended angle of the effective aperture facing light sources luminous point of the light collimating element is A, and A is not
More than 60 degree.That is, light collimating element 113 only have collected the light with optical axis included angle within 30 degree that light source 119 is sent
Line 122, without receiving the light 123 with optical axis included angle more than 30 degree, this part is more than 30 degree of light energy with optical axis included angle
Slattern.For Lambertian source（That is uniformly light-emitting light source）For, only accounted for the energy of light of the optical axis included angle within 30 degree
The 25% of gross energy, for the light fixture of the present invention, the light collection efficiency of light collimating element 113 is very low.Due in ability
In domain, light efficiency is low to mean that outgoing light energy is low, also implies that illuminating effect is poor, therefore so low collection efficiency is not ability
The conventional design in domain.But why the present invention so designs, it is found through experiments that because of inventor, light collection device has
Imitate bore smaller to the subtended angle of light source luminescent point, more collimated by the light beam of light collection device, and central light strength is simultaneously simultaneously
Do not diminish.That is the light that light collimating element is lost to the subtended angle of light source luminescent point is reduced, is collimated by light
The larger light of angle after element, and the light intensity at center is not reduced.This obviously with the conclusion on optics textbook and differing,
As long as because saying that light source is placed in the focus of lens no matter the light of many wide-angles can be obtained on optics textbook
Collimation, therefore reduction collection angle can also reduce central light strength.
Experiment finds that inventor does not have good theoretical explanation for more than, but finds only to collect profit in practice really
Central light strength is not reduced with the light energy of light source angle, while the angle of collimated light beam can diminish.
Classical optical theory teaches that, the luminous spot chi of the degree of collimation of collimated light and light source in light colimated light system
Very little to be inversely proportional, i.e., luminous spot is bigger, and degree of collimation is lower.In the present invention, the Laser Focusing that laser diode is sent is in glimmering
Mating plate, because laser is the coherent light that is sent by the luminescence chip of very little, can form very small luminous spot, such basis
Optical theory can just form highly collimated light beam.The experiment conclusion found simultaneously using inventor, control light collimation member
Part is less than 60 degree to the subtended angle of light source luminescent point, so can further improve the collimation of collimated light beam.Thus can be with
Highly collimated outgoing beam is obtained, it is outer big all without obvious diffusion change at several meters even tens meters.Such light beam is in decoration
There are many use in illumination.
It is preferred that, light collimating element is less than 30 degree to the subtended angle of light source luminescent point, so can further improve collimation
The collimation of light beam.
An application in device illumination is just schematically illustrated in embodiment shown in Fig. 2.In the light fixture of the embodiment, in addition to
Cambered surface reflection mirror array 214 positioned at light collimating element light path rear end, including multiple plane mirror 214a-214e, it is the plurality of
Plane mirror is arranged in array along cambered surface.The cambered surface speculum battle array is incided from the collimated light beam 224 of light collimating element outgoing
After row 214, each plane mirror 214a, 214b, 214c, 214d, 214e have received sub-fraction light and reflected respectively
And multiple beamlets 225 are formed, each beamlet is also collimated light beam.Because multiple plane mirrors are arranged along a cambered surface
Row, therefore the normal direction of each speculum is slightly changed, the directions of the multiple beamlets being so reflected by it out is not yet
Together.Again because collimated light beam 224 is highly collimated, level crossing does not change the collimation of light, therefore each beamlet is also
Highly collimated.So multiple highly collimated beamlets can be a long way off（Such as several meters outer）Multiple small luminous points are formed, are realized " full
The decorative illumination effect of TianXing ".In the present embodiment, the key of " babysbreath " decorative effect is that each luminous point is sufficiently small
And it is bright, this requires that the collimation of collimated light beam 224 is sufficiently high, and central light strength is sufficiently large.Exactly because it is and foregoing
The reason for, the characteristics of collimated light beam produced by embodiment illustrated in fig. 1 of the present invention has collimation height and powerful center light simultaneously.
Foregoing embodiment has a problem that, is exactly that light path from light source to light collimating element is very long, this is due to
Light collimating element is small determined to the subtended angle of light source luminescent point, and the length of this section of light path is approximately equal to the bore of light collimating element
Divided by subtended angle（Radian）, smaller then this section of light path of subtended angle be longer.This, which allows for whole system, becomes elongated, in the application less
It is convenient.This problem is solved in the embodiment shown in fig. 3.From unlike embodiment illustrated in fig. 1, going back in the present embodiment
Including two panels speculum 316a and 316b.The priority of light 322 sent from light source is curved by speculum 316a and 316b reflection
Folding twice, is re-shoot in light collimating element 313.Thus effectively light path can be avoided long in one direction, but warp
Cross after the reflection of speculum so that overall light path presents compare length in a balanced way in the two directions.Use in the present embodiment
Two panels speculum, and actually using a piece of or three or more speculums, the purpose for reducing optical path length can also be realized.
Another difference of the present embodiment and embodiment illustrated in fig. 1 is, in addition to positioned at light source and light collimating element 313
Diaphragm 315a and 315b between light path, diaphragm include only 322 part luminous energy in loophole 315c, the light that light source is sent and passed through
The effective aperture of light collimating element is completely covered in the loophole 315c of the diaphragm, this part light.And its remaining light 323 that light source is sent
Then blocked by diaphragm.It can so reduce invalid light 323 to become veiling glare and influence to inject the decorative effect of light.
In the embodiment above, light collimating element is all a piece of lens, and the part light that light source is sent is incident in the lens simultaneously
Outgoing is collimated after its refraction.Lens can be sphere or aspherical, and preferably aspherical lens so can be real
Existing more preferably collimation.Because the refractive index of transparent material changes with optical wavelength, therefore the light that light source is sent is reflected by lens
After dispersion phenomenon occurs.In another embodiment, light collimating element can also use the mode of reflection to reflect incident light
Collimated light is formed, as shown in Figure 4.
In the embodiment shown in fig. 4, light collimating element 413 is a piece of arc reflection plate, and the light 422 that light source is sent is incident
After be reflected off forming the outgoing of collimated light 424.Specifically, the transversal in the paper plane of the reflecting plate in Fig. 4 is parabolic
One section of line, the parabola is using the luminous point of light source as focus；Vertical paper, the parallel input light light of the reflecting plate in Fig. 4
Transversal in the plane of axle is circular one section, and the circle is using the luminous point of light source as the center of circle.It is also understood that with light source
Luminous point is one section of parabola of focus, is revolved using light source luminescent point excessively and perpendicular to the axis RX of light source luminescent optical axis as symmetry axis
Turn one section, obtain the reflecting plate of the present embodiment.
From using unlike lens, arc reflection plate is not present due to aberration formed by the refraction of light, therefore outgoing
The color homogeneity of light is more preferable.It is appreciated that except lens and arc reflection plate, other light collimating elements are in the present invention also all
It can use.
In the aforementioned embodiment, Laser Focusing is in flourescent sheet and excites flourescent sheet to produce fluorescence, and fluorescence can be to all directions
Isotropic transmitting, therefore the light energy of half or so is had towards light source transmitting so as to cause light loss.Below from Fig. 5 to
Figure 10 embodiment has done further optimization and explanation for light source and fluorescence chip architecture.
In the embodiment shown in Fig. 5 a, flourescent sheet includes transparent thermal conductive substrate 512a and depends on the glimmering of the substrate surface
Light coating 512b, the laser 521 that laser diode 511 is sent focuses on fluoresent coating after passing through the transparent thermal conductive substrate 512a
512b.Transparent thermal conductive substrate can the transparent heat-conducting as sapphire, diamond or carborundum make, can help
Fluoresent coating radiates.Transmission laser and the optical thin film of at least part reflected fluorescent light are coated with transparent thermal conductive substrate surface, so
Towards at least part of can be reflected by the optical thin film of fluorescence that laser diode is launched towards light collimating element transmitting, from
And effectively improve the luminous efficiency of light source.It is preferred that, the optical thin film is plated in transparent thermal conductive substrate 512a towards fluoresent coating
Surface on, i.e., optical thin film be located between transparent thermal conductive substrate and fluoresent coating.The light that so fluoresent coating is sent is without wearing
Cross transparent thermal conductive substrate just can directly be reflected by optical thin film, reduce the horizontal proliferation of light.
In the embodiment shown in Fig. 5 b, it is furthermore preferred that also including being close to flourescent sheet placement positioned at flourescent sheet light path rear end
Optical filter 517, for transmiting fluorescence of the luminous half-angle less than or equal to A/2 and at least part Refl-Luminous half-angle is more than A/2
Fluorescence.As previously described, because light collimating element can only receive fluorescence of the luminous half-angle less than or equal to A/2 that light source is sent, this
Part effectively light can direct transmission filter 517, and remaining invalid light will be reflected back toward flourescent sheet, and this part light passes through fluorescence
Piece scatter and reflection after can outgoing again, which part can change direction and in luminous half-angle less than or equal to A/ due to scattering process
Outgoing is able in the range of 2, its remaining light then reflects return flourescent sheet by optical filter 517 again and is scattered and reflects.Namely
Say, the invalid light of script can partly be reused as effective light after the reflection of optical filter 517, so as to lift light source
The energy of light collimating element glazing can be incided, that is, improves system effectiveness.
In the embodiment shown in Fig. 5 a and Fig. 5 b, there is the problem of light spreads in transparent thermal conductive substrate, such as Fig. 6 a institutes
Show.Laser 621, which is passed through, to be focused on fluoresent coating 612b after transparent thermal conductive substrate 612a and excites it to launch fluorescence.It is glimmering in Fig. 6 a
Light 631 and 632 represents with solid arrow, and remaining do not represented by the laser 633 that fluoresent coating absorbs with dotted arrow.I.e.
Make the optical thin film for having described in Fig. 5 a embodiments, the optical thin film can not stop fluorescence completely, therefore except direct
Outside the fluorescence 631 of outgoing, still suffer from part fluorescence 632 and enter in transparent thermal conductive substrate.It is incident in this part fluorescence 632
The larger part in angle can occur to be totally reflected and turn again to fluorescence on transparent thermal conductive substrate 612a another relative surface
Surface where coating, and at least part outgoing.So, light energy point as shown in Figure 6 b will be formed on fluoresent coating surface
Cloth.Fig. 6 b are the front views that flourescent sheet is looked over towards light emission direction.The wherein facula position of Laser Focusing incident fluorescence coating
It is that energy highest is also most bright part, the direct outgoing from here of most of light, this area here corresponding to center spot 641
Domain is referred to as lasing region, i.e. laser and directly excites luminous region.Region beyond lasing region is referred to as non-lasing region, i.e., do not swashed
Light directly excites luminous region.In non-lasing region, the fluorescence 632 spread in the transparent thermal conductive substrate of entrance shown in Fig. 6 a
The diffusion ring of light 643 can be formed in periphery after away from the segment distance of center spot 641 1；In center spot 641 and the diffusion ring of light 643
Between there is Crape ring 642, and the dark areas 644 existed outside the diffusion ring of light 643.It can be seen that in non-lasing region at least again
Including Liang Ge areas, around lasing region 641 and the annular dark areas 642 adjacent with lasing region, and with the non-conterminous periphery of lasing region
Region.The intersection in the two regions --- easy calculate in position for namely spreading the inner circle of the ring of light 643 obtains.According to several
What optics is understood, here corresponding to the incoming position for the fluorescence that can just be totally reflected in transparent thermal conductive substrate lower surface.Hair
The minimum incidence angle of the fluorescence of raw total reflectionIt is equal to：, wherein n is the refractive index of transparent thermal conductive substrate.For example
For the transparent thermal conductive substrate of sapphire material, n=1.765, then easily calculate and obtainDegree.With reference to Fig. 6 a, incidence angle
ForFluorescence once institute propagation distance L reflected in transparent thermal conductive substrate be equal to, wherein d is transparent thermal conductive substrate
Thickness.In order to describe below conveniently, define L and be characterized distance.Annular dark areas 642 is arrived with spreading the intersection of the ring of light 643
The distance for exciting district center is characteristic distance.Characteristic distance is relevant with the material and thickness of transparent thermal conductive substrate, for example for
The transparent thermal conductive substrate of the sapphire material of 0.3mm thickness, characteristic distance is equal to 0.41mm.
It is appreciated that center spot（Lasing region）641 be the main function person for illumination or decorative lighting, and spreads light
Ring 643 then can play a part of execution as veiling glare to this illumination or decorative lighting, therefore should reduce diffusion light
Ring 643 it is luminous.In order to reach that this purpose can use at least two technological means.Said in the following embodiments
It is bright.
It is close to the light that flourescent sheet is placed in the light fixture of the embodiment shown in Fig. 7 a, in addition to positioned at flourescent sheet light path rear end
Late piece 717, diaphragm piece 717 includes transparent area 717a and shading region, and both are close adjacent, transparent area 717a be aligned Laser Focusing in
The focus point of flourescent sheet.In this embodiment, laser 721 focuses on fluoresent coating 712b after transmiting transparent thermal conductive substrate 712a,
And diaphragm piece 717 is close to fluoresent coating 712b placements and its transparent area 717a targeted by laser 721 and focus on fluoresent coating 712b
Lasing region, excite the distance of district center less than characteristic distance while at least being arrived on the edge of transparent area in the presence of point.So
Effective light that lasing region is sent at least partly can realize through transparent area 717a and finally decorative lighting purpose, while spreading light
Beyond ring is at least partially in transparent area, the light that the diffusion ring of light is sent at least part of can be blocked area and cover, and reach that reduction is spuious
The effect of light.It is preferred that, the diffusion ring of light is all beyond the transparent area of diaphragm piece, and now point all on the edge of transparent area is arrived
Flourescent sheet excites the distance both less than characteristic distance of district center, so spread the light that the ring of light sends will all be blocked area block from
Without influenceing decorative illumination effect.
Diaphragm piece 717 has been used in embodiment shown in Fig. 7 a punches to realize transparent area on a piece of opaque sheet material
717a.This is a kind of manufacture method of diaphragm piece, and the limitation of this method is that the aperture punched is difficult to be made small, and impermeable
The influences such as the thickness of bright sheet material in itself can also absorb on the light formation propagated in transparent area, reflection.More preferred, such as Fig. 7 b institutes
Show, diaphragm piece 717 is made up of transparent material, wherein shading region 717b is formed by shading plated film, the plated film absorbs or reflection is incident
Light.There can be a multiple choices for making the transparent material of diaphragm piece, glass, quartz, sapphire etc. can.Needed thereon
The part plating shading plated film of shading region is realized, the part without plated film is exactly transparent area 717a, and such benefit has multiple.First
Semiconductor technology can be used to realize, size, the shape of transparent area are not almost limited, and with low cost.Next to that shading
The thickness of plated film can be ignored, therefore also not interfere with the propagation of the light of transmission in transparent area.Shading plated film can be with gold-plated
Belong to reflectance coating or absorbing film, non-metallic film can also be plated, this is highly developed technique.It is preferred that, diaphragm piece is coated with shading plating
The one side of film is close to fluoresent coating 712b, so the propagation distance without light between the two, and diaphragm blocks the region of light just more
Accurately.
It is preferred that, diaphragm piece is coated with filter coating, and the filter coating is used to transmit fluorescence and extremely of the luminous half-angle less than or equal to A/2
Small part Refl-Luminous half-angle is more than A/2 fluorescence, and the invalid fluorescence that luminous half-angle can be thus more than to A/2 carries out profit again
With making more light incide in the effective aperture of the light collimating element of light path rear end.Certainly in the present embodiment, light collimation member
Part can also be designed to collect the light for the greater angle that light source is sent, and this obviously has no effect on what diaphragm piece in the present embodiment rose
Effect and beneficial effect.
In the embodiment shown in foregoing Fig. 7 a and Fig. 7 b, the minimum dimension to transparent area does not provide limitation.One
As in order to reach the purpose of the light outgoing that the maximized lasing region by flourescent sheet is sent, the transparent area of diaphragm piece is obvious
While the lasing region of flourescent sheet is directed at, the lasing region of flourescent sheet is should be greater than and be completely covered, is sent with to ensure lasing region
All light are all able to from transparent area outgoing.But in the occasion of other decorative lighting, it is contemplated that go out from diaphragm piece transparent area
The light penetrated can be imaged on the region for ultimately form decorative illumination effect, thus transparent area shape can for circle, pentalpha,
Cross star, heart, triangle, square, regular hexagon or ellipse, and the lasing region of flourescent sheet is likely less than, to realize
The decorative effect more enriched.Transparent area on situation for example shown in Fig. 7 c, diaphragm piece 717 is the star-shaped region of cross
717a, remaining region is shading region 717b, and transparent area 717a targeted by the lasing region 741 of fluoresent coating.Although so lasing region
741 light sent have very big part to be blocked area to have blocked and be unable to outgoing, but can be in final decorative lighting region
An existing bright cross star, realizes special decorative effect.In this embodiment, transparent area 717a does not have office yet
Be limited to inside the lasing region of fluoresent coating, the tip at four angles of its cross star also stretched out the lasing region 741 of fluoresent coating with
Outside, to realize in the dimmed effect in tip.From this example, both transparent area and lasing region of flourescent sheet must be aligned,
But both size and particular location relation is not fixed, to be designed according to the actual decorative effect to be realized with
Determine.For example, the transparent area of diaphragm piece might be less that the lasing region of fluoresent coating, transparent area outgoing is at this moment ensured that
Light is all most bright, and the hot spot edge formed has an obvious bright-dark cut.
Described in above-mentioned Fig. 7 a to Fig. 7 c illustrated embodiments and reduce the luminous class method of the diffusion ring of light, below with Fig. 8 a
Illustrate another kind of method with the embodiment shown in Fig. 8 b.Fig. 8 a are the structural representations of light source in the embodiment, and Fig. 8 b are fluorescence
The front view looked over towards light emission direction of coating.In this embodiment, with reference to Fig. 8 b, non-in fluoresent coating 812b excites
Light absorption paint 812c is at least partly scribbled in area, this is scribbled at least includes in a region, the region in the part of light absorption paint
The heart is equal to characteristic distance to exciting the distance of district center, then the inevitable at least partly covering diffusion ring of light 643 in this region, also
Reach and reduced the luminous purpose of the diffusion ring of light.It is preferred that, light absorption paint is oil paint, and its benefit is for hydrophilic fluorescence
For coating, the coating scope of oil paint is easily controlled, will not in fluoresent coating large area diffusion.
Obviously, in order to remove the influence of the diffusion ring of light completely, the part of light absorption paint is scribbled on fluoresent coating to be covered completely
Lid spreads the ring of light, is exactly that the part 812c for scribbling light absorption paint should cover on fluoresent coating to excite district center in practical operation
Part beyond for the center of circle and using characteristic distance as the border circular areas of radius, that is, 843 and its periphery in coverage diagram 8b
Region.
And for the annular dark space adjacent with lasing region, this part, which can apply light absorption paint, can not also apply light absorption paint,
Because this subregion itself also hardly lights.Have what is spread in fluoresent coating in coating procedure in view of light absorption paint
Process, thus the annular dark space just can as coating light absorption paint buffering area, it is particularly the case that lower fluorescence is applied by Fig. 8 b
The front view of layer.In the present embodiment, the diffusion ring of light 843 of the annular periphery of dark space 842 is completely covered by light absorption paint, and extinction is applied
Material 812c will necessarily part diffuse into the annular dark space 842（Buffering area）, simultaneously because the separation of the annular dark space 842,
The light absorption paint of diffusion does not diffuse into the lasing region 841 at center again.Therefore the annular dark space 842 can be divided into two parts, remote
The part of lasing region can scribble light absorption paint, and will not scribble light absorption paint close to the part of lasing region.
It is preferred that, also include being located at the optical filter that flourescent sheet placement is close in flourescent sheet light path rear end in the present embodiment（Figure
In be not drawn into）, for transmiting fluorescence of the luminous half-angle less than or equal to A/2, simultaneously at least part Refl-Luminous half-angle is more than the glimmering of A/2
Light.The invalid fluorescence that luminous half-angle is more than A/2 can thus be recycled, more light is incided light path rear end
In the effective aperture of light collimating element.Certainly in the present embodiment, light collimating element can also be designed to collect what light source was sent
The light of greater angle, this obviously has no effect on the role of light absorption paint and beneficial effect in the present embodiment.
In the embodiment above, flourescent sheet is all to be made up of transparent thermal conductive substrate with the fluoresent coating for being coated in its surface.
As described in Fig. 6 a and related description, have that part fluorescence conducts and spread in transparent thermal conductive substrate in this case asks
Topic.In fact, also another way realizes flourescent sheet.The following examples are explained, and its structural representation is as schemed
Shown in 9a.
In the light fixture of the present embodiment, flourescent sheet can in the form of reflection stimulated emission fluorescence.Laser diode 911 is sent out
Laser 921 is penetrated, the laser 921, which is focused on, to be incident in flourescent sheet 912 and excite it to launch fluorescence.Specifically, the structure of light source is such as
Shown in Fig. 9 b, flourescent sheet includes reflective 912a and is coated on the fluoresent coating 912b on reflective surface, laser diode
911 laser 921 sent are incident in fluoresent coating 912b, and due to the effect of reflective, fluoresent coating can only back-reflection lining
The direction transmitting fluorescence at bottom.If it is appreciated that laser 921 it is vertical be incident in fluoresent coating 912b, the latter's transmitting it is glimmering
Light just faces laser diode outgoing, it is impossible to form light output.In the present embodiment, the optical axis and fluorescence of laser 921 are set
The angle of coating 912b plane normals is more than A/2, at this moment just has light beam 922 of the half-angle more than A/2 and is leaked from side, light
Collimator apparatus 913 just can be collected and collimate to it.Transparent light guide plate is not present in this method, is also impossible to exist
The horizontal proliferation of fluorescence, light can be concentrated more.
It is preferred that, the angle of laser beam axis and fluoresent coating plane normal is 45 degree.As shown in Figure 10 a, laser 1021
The angle of optical axis and reflective 1012a and the fluoresent coating 1012b on its surface is 45 degree, with reference to Figure 10 b, then circular cross-section
Laser beam 1021 reformed into the hot spot that excites of approximate ellipsoidal when projecting fluoresent coating plane, and inspire same shape
Fluorescence radiation hot spot 1041, and the light collimating element of light path rear end is also when receiving the light that the fluorescence radiation hot spot 1041 sends
Being received from 45 degree of direction, therefore receiving the look fluorescence radiation hot spot of sub-elliptical of direction in light collimating element can weigh again
New projection is as circular fluorescent light beam 1022, so as to ultimately form the hot spot of circle.Circular light spot has relatively good device
Effect, and be easier to be received by people.
In the aforementioned embodiment, several ways of realization of light source and light collimating device have been illustrated, in the reality shown in Fig. 2
Apply and then illustrate how to utilize such light-emitting device in example（Including light source and light collimating device）With unification cambered surface speculum
Array realizes the decorative illumination effect of " babysbreath ".Multiple plane mirrors are arranged along an irregular curved surface in this embodiment
Row.In the embodiment shown in fig. 11, difference is, multiple plane mirror 1114a and 1114b equal distributions are on a convex surface
1114x surfaces, normal direction of the normal direction of each plane mirror with the convex surface where it in this position is identical, it is clear that
The normal direction of each plane mirror, to cause the direction of its multiple beamlet reflected to form different.
In the light fixture of embodiment shown in Figure 12, positioned at light-emitting device（Including and light collimating element）The concave surface of light path rear end
Reflection mirror array, including multiple plane mirror 1214a and 1214b etc., the plurality of plane mirror is arranged along a concave surface 1214x
Array is arranged into, the beamlet 1225 of multiple convergences is formed after the reflection of concave reflection lens array from the light of light-emitting device outgoing.
Geometric optics teaches that the light beam of collimation can be reflected as the light beam of convergence by any concave mirror, and in this reality
Apply in example, each plane mirror 1214a and 1214b normal direction with its where concave surface this position normal direction
It is identical, therefore the normal direction of concave surface consecutive variations is become Discrete Change by multiple plane mirror 1214a and 1214b etc.,
Multiple beamlets that multiple plane mirror 1214a and 1214b etc. are reflected to form are then convergences.In the light fixture of the present embodiment
In, in addition to housing 1218, concave reflection lens array is in the housing 1218, and the surface of housing 1218 includes a transparent area
1218a, multiple beamlets converge at transparent area 1218a and passed from transparent area to outside housing.Because beamlet is convergence, this
The area of the convergence position of a little light beam obviously can be less than the size of concave reflection lens array, therefore transparent area can also be smaller
Beamlet all transmissions are just can allow for, specifically size of the transparent area at least in a direction dimension is less than concave reflection
Size of the lens array in direction dimension.From angles of product, small transparent area can give people to feel that all beamlets are all
Point out and shoot out from one, and the possessive construction for being inwardly not easy to see through inside housing 1218 from the transparent area, appearance
It is good.
It is preferred that, what the transparent area 1218a of surface of shell shape was formed when being external in multiple beamlets through transparent area
The envelope of total hot spot, such transparent area can both ensure that all beamlets can pass through transparent area, and transparent area is ensure that again
Area minimize.It is preferred that, the transparent area of surface of shell is rounded, pentalpha, water-drop-shaped, ellipse, square, rectangular
Shape, trapezoidal, heart-shaped, regular hexagon or triangle, to realize more preferable appearance.In the present embodiment, concave surface 1214x is ball
Face or ellipsoid, concave surface 1214x may also be different in the curvature in two orthogonal dimensions, different after reflection to realize
Luminous point is distributed.
Further, the light fixture in the present embodiment also includes motor（It is not drawn into figure）, for driving cambered surface speculum battle array
Row are rotated.The rotation is the normal direction AX circular-rotations along concave surface 1214x centers, rotation with concave surface and each
Plane mirror 1214a and 1214b etc. rotation, the beamlet reflected to form by concave reflection lens array also can and then turn
It is dynamic, the multiple small luminous points rotated are formed, more rich visual effect is constituted.Certainly, motor can also drive cambered surface speculum battle array
Row carry out other cycle movements, to realize other visual effects.
Obviously in this embodiment, light-emitting device is not necessarily intended to using the light source and the structure of light collimating element shown in Fig. 1,
As long as light-emitting device can launch collimated light beam, it is possible to realize the beneficial effect of the present embodiment.
Embodiment shown in Figure 13 is further improvement in the fig. 12 embodiment.In the light fixture of the present embodiment, position
Concave reflection lens array in light-emitting device light path rear end includes multiple plane mirrors, and the plurality of plane mirror is recessed along one
Face is arranged in array, from the light of light-emitting device outgoing formed after concave reflection lens array reflection multiple beamlet 1325u,
1325v and 1325w etc., the plurality of beamlet is irradiated in target face 1351 and forms multiple sub-light spots.
It is obvious that beamlet 1325u is incident in the incidence angle of target face 1351（Incident ray is with target face in incidence point method
The angle of line）, more than the incidence angle that beamlet 1325w is incident in target face 1351.Assuming that in concave reflection lens array, unit plane
Long-pending plane mirror number（That is the density of plane mirror）It is uniform, then due to the influence of crevice projection angle, beamlet
The distance for the luminous point that 1325u is formed in the luminous point that target face 1351 is formed to adjacent beamlet in target face 1351 is just inevitable big
In the distance of the beamlet 1325w luminous points formed in the luminous point that target face 1351 is formed to adjacent beamlet in target face 1351.
The array of light spots so formed in target face 1351 is exactly uneven：Region 1352u incident beamlet 1325u luminous point
Density is less than the incident region 1352w of beamlet 1325w densities of points of light.
However, uniform densities of points of light can realize more preferable visual effect.In order to realize more uniform densities of points of light,
In the present embodiment, it is contemplated that the region 1314u on concave reflection lens array reflects to form beamlet 1325u, region 1314w is anti-
Penetrate to form beamlet 1325w, then make the quantity of unit area plane mirror on the 1314u of region（The density of plane mirror）
The quantity of unit area plane mirror more than region 1314w, it is possible to the phase that at least part of compensation crevice projection angle is brought
The distance between adjacent luminous point difference.For beamlet 1325v and beamlet 1325w, both are incident in the incidence of target face 1351
Angle is close, therefore can set the similar density of plane mirror on its corresponding region 1314v and 1314w.
In short, compact district and rarefaction, the unit area plane reflection of compact district are included on concave reflection lens array
The quantity of mirror is more than the son of outgoing in the quantity of the unit area plane mirror of rarefaction, and plane mirror in compact district
Light beam is incident in the average angle of incidence of target face and is incident in target more than the beamlet of outgoing on the plane mirror in rarefaction
The average angle of incidence in face.So compact district relies on higher plane mirror density, to compensate the beamlet of its reflection in target
The influence that the larger spot distance brought of incidence angle is widened on face so that it is adjacent that compact district and rarefaction are formed in target face
Spot distance is closer.In the present embodiment, region 1314u is exactly compact district on concave reflection lens array, and region 1314u is exactly
Rarefaction.In the present embodiment, compact district is located on concave surface close to one end of light exit direction, and rarefaction is located at remote on concave surface
One end of light exit direction.It is appreciated that there may be multipair compact district and rarefaction on concave reflection lens array.
In the present embodiment, concave reflection lens array is adopted to be illustrated.And obviously the setting of compact district and rarefaction is same
Go for convex refractive lens array（Embodiment shown in Figure 11）And other kinds of camber reflection lens array, its
The concrete form of the mode of action and rule and curved surface is not related.
Obviously in this embodiment, light-emitting device is not necessarily intended to using the light source and the structure of light collimating element shown in Fig. 1,
As long as light-emitting device can launch collimated light beam, it is possible to realize the beneficial effect of the present embodiment.
In addition to the camber reflection lens array described in above-described embodiment, in light-emitting device（It is accurate including light source and light
Straight element）Light path rear end can also include reflecting plate and motor, motor driving reflecting plate rotate or cycle movement, its structure
Schematic diagram is as shown in figure 14.Reflecting plate 1414 reflects away the collimated light that light-emitting device is sent, and motor driving reflecting plate is rotated,
The scanning of flare can be just controlled, the visual effect of motion hot spot is formed.And motor can also drive reflecting plate to do other
Cycle movement, to form other spot motion modes.
In the light fixture of embodiment as shown in figure 15, include micro mirror in the light path rear end of the light-emitting device of transmitting collimated light beam
Array 1514, micro mirror array 1514 includes multiple micro mirror 1514a, 1514b etc., and the light beam that light-emitting device is sent is incident in micro mirror battle array
Row back reflection forms multiple beamlets.The progress that micro mirror 1514a and 1514b in micro mirror array can be independently controlled is overturn,
This direction of propagation for corresponding to multiple beamlets can be by independent control, in target face（It is not drawn into figure）On the light that is formed
Each point in lattice array independent can be moved by control, form unique visual effect.Further, in the present embodiment
Light fixture also include motor 1519, for drive micro mirror array rotate or cycle movement.So formed in target face
Array of light spots just can be overall rotation or periodically motion, the independent control motion with each luminous point can carry out simultaneously,
Form unique visual effect.Obviously in this embodiment, light-emitting device is not necessarily intended to using the light source shown in Fig. 1 and light collimation
The structure of element, as long as light-emitting device can launch collimated light beam, it is possible to realize the beneficial effect of the present embodiment.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of light fixture, it is characterised in that including：
Light source, including laser diode and flourescent sheet, the Laser Focusing that laser diode is sent is in flourescent sheet and excites flourescent sheet
Send fluorescence；
Light collimating element, for receiving light that light source sends and being collimated outgoing, the effective aperture of the light collimating element is relative
The subtended angle of light source luminescent point is A, and A is not more than 60 degree.
2. light fixture according to claim 1, it is characterised in that also anti-including the cambered surface positioned at light collimating element light path rear end
Lens array, including multiple plane mirrors are penetrated, the plurality of plane mirror is arranged in array along cambered surface.
3. light fixture according to claim 1 or 2, it is characterised in that light collimating element is a piece of lens, the portion that light source is sent
Light splitting is incident in the lens and collimates outgoing after its refraction；Or light collimating element is a piece of arc reflection plate, the reflection
The reflecting surface of plate distinguishes rounded one section and parabolical one section in two mutually orthogonal dimensions, and the circle is with light source
Luminous point be the center of circle, the parabola is using the luminous point of light source as focus.
4. light fixture according to claim 1 or 2, it is characterised in that the flourescent sheet includes transparent thermal conductive substrate and depended on
In the fluoresent coating of the substrate surface, the laser that the laser diode is sent focuses on fluorescence after passing through the transparent thermal conductive substrate
Coating；Transmission laser and the optical thin film of at least part reflected fluorescent light are coated with transparent thermal conductive substrate surface.
5. light fixture according to claim 4, it is characterised in that also put including being close to flourescent sheet positioned at flourescent sheet light path rear end
The optical filter put, for transmiting fluorescence of the luminous half-angle less than or equal to A/2, simultaneously at least part Refl-Luminous half-angle is more than the glimmering of A/2
Light.
6. light fixture according to claim 1 or 2, it is characterised in that the flourescent sheet includes reflective and is coated on anti-
The fluoresent coating of substrate surface is penetrated, the laser light incident that the laser diode is sent is applied in fluoresent coating, laser beam axis with fluorescence
The angle of layer plane normal is more than A/2.
7. light fixture according to claim 6, it is characterised in that the angle of laser beam axis and fluoresent coating plane normal is 45
Degree.
8. light fixture according to claim 1 or 2, it is characterised in that also including positioned at light source and light collimating element light path it
Between diaphragm, diaphragm includes loophole, and the light that light source is sent only has part can be by the loophole of the diaphragm, and this part light is complete
Cover the effective aperture of light collimating element.
9. light fixture according to claim 1, it is characterised in that also including the reflecting plate positioned at light collimating element light path rear end
And motor, motor driving reflecting plate rotation or cycle movement.
10. light fixture according to claim 2, it is characterised in that also including motor, for driving cambered surface reflection mirror array to turn
Dynamic or cycle movement.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710449032.3A CN107166180A (en) | 2017-06-14 | 2017-06-14 | Light fixture |
| PCT/CN2018/089596 WO2018228223A1 (en) | 2017-06-14 | 2018-06-01 | Lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710449032.3A CN107166180A (en) | 2017-06-14 | 2017-06-14 | Light fixture |
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| CN107166180A true CN107166180A (en) | 2017-09-15 |
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| WO (1) | WO2018228223A1 (en) |
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| CN108167710A (en) * | 2018-01-13 | 2018-06-15 | 杨毅 | Lamps and lanterns |
| CN108626680A (en) * | 2017-12-29 | 2018-10-09 | 长春理工大学 | A kind of laser optical system and the car light with the laser optical system |
| WO2018228223A1 (en) * | 2017-06-14 | 2018-12-20 | 杨毅 | Lamp |
| WO2021135865A1 (en) * | 2019-12-31 | 2021-07-08 | 深圳市聚飞光电股份有限公司 | Lamp |
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Also Published As
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Effective date of registration: 20200106 Address after: Room 1265, building 2, No. 57, Tangnan street, Yuepu Town, Baoshan District, Shanghai 200000 Applicant after: Shanghai Anming Technology Center (limited partnership) Address before: 100084, No. 27, Ma Ma Yu West Street, Shijingshan District, Beijing, Guangning Applicant before: Yang Yi |
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Effective date of registration: 20201127 Address after: Room b59, building 031, 1076 Jungong Road, Yangpu District, Shanghai, 200433 Applicant after: SHANGHAI BLUE LAKE LIGHTING TECH. Co.,Ltd. Address before: Room 1265, building 2, No. 57, Tangnan street, Yuepu Town, Baoshan District, Shanghai Applicant before: Shanghai Anming Technology Center (L.P.) |
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Application publication date: 20170915 |