CN207122764U - Light fixture - Google Patents
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- CN207122764U CN207122764U CN201720694667.5U CN201720694667U CN207122764U CN 207122764 U CN207122764 U CN 207122764U CN 201720694667 U CN201720694667 U CN 201720694667U CN 207122764 U CN207122764 U CN 207122764U
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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；The flourescent sheet includes transparent thermal conductive substrate and depends on the fluoresent coating of the substrate surface；Fluoresent coating is referred to as lasing region by the incident facula position of Laser Focusing, region beyond lasing region is referred to as non-lasing region, light absorption paint is at least partly scribbled in non-lasing region, this scribbles and a region is comprised at least in the part of light absorption paint, and the regional center is equal to characteristic distance to exciting the distance of district center.The luminous spot of very little can be realized using laser diode and flourescent sheet, so as to which the light beam of highly collimated light can be realized after light collimating element collimates.Rather than the light absorption paint in lasing region can ensure the more preferable decorative effect of final outgoing beam with the luminous of the diffusion ring of light of at least part of absorption luminous spot periphery.
Description
Technical field
It the utility model is related 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 utility model proposes a kind of light fixture, including light source, light source includes laser diode and flourescent sheet, laser diode
The Laser Focusing sent is in flourescent sheet and excites flourescent sheet to send fluorescence；The flourescent sheet includes transparent thermal conductive substrate and depends on this
The fluoresent coating of substrate surface, the laser that laser diode is sent focus on fluoresent coating after passing through the transparent thermal conductive substrate；Thoroughly
Transmission laser and the optical thin film of at least part reflected fluorescent light are coated with bright thermal conductive substrate surface；Fluoresent coating is entered by Laser Focusing
The facula position penetrated is referred to as lasing region, and the region beyond lasing region is referred to as non-lasing region, and suction is at least partly scribbled in non-lasing region
Optical coating, this scribbles in the part of light absorption paint and comprises at least a region, the regional center to the distance for exciting district center etc.
In characteristic distance, characteristic distance L is equal to, wherein, d and n are the thickness of transparent thermal conductive substrate respectively
And refractive index.Light fixture also includes light collimating element, for receiving the light from the outgoing of diaphragm piece and being collimated outgoing.
The luminous spot of very little can be realized using laser diode and flourescent sheet, so as to accurate by light collimating element
The light beam of highly collimated light can be realized after straight.Rather than the light absorption paint in lasing region can be with least part of absorption luminous spot
Lighting for the diffusion ring of light of periphery, ensures the more preferable decorative effect of final outgoing beam.
Brief description of the drawings
Fig. 1 illustrates the structural representation of the light fixture of the utility model first embodiment；
Fig. 2 illustrates the structural representation of the light fixture of another embodiment of the utility model；
Fig. 3 illustrates the structural representation of the light fixture of another embodiment of the utility model；
Fig. 4 illustrates the structural representation of the light fixture of another embodiment of the utility model；
Fig. 5 a illustrate the structural representation of light source in another embodiment light fixture of the utility model；
Fig. 5 b illustrate the structural representation of light source in another embodiment light fixture of the utility model；
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 light fixture of the utility model；
Fig. 7 b illustrate the structural representation of light source in another embodiment light fixture of the utility model；
Fig. 7 c illustrate the front view of fluoresent coating and diaphragm piece in another embodiment light fixture of the utility model；
Fig. 8 a illustrate the structural representation of light source in another embodiment light fixture of the utility model；
Fig. 8 b illustrate the front view of fluoresent coating in another embodiment light fixture of the utility model；
Fig. 9 a illustrate the structural representation of the light fixture of the utility model first embodiment；
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 utility model；
Figure 12 illustrates the structural representation of the light fixture of another embodiment of the utility model；
Figure 13 illustrates the structural representation of the light fixture of another embodiment of the utility model；
Figure 14 illustrates the structural representation of the light fixture of another embodiment of the utility model；
Figure 15 illustrates the structural representation of the light fixture of another embodiment of the utility model.
Embodiment
The utility model proposes a kind of light fixture, its structural representation are as shown in Figure 1.The light fixture includes light source 119 and light is accurate
Straight element 113, wherein light source 119 include laser diode 111 and flourescent sheet 112, the laser 121 that laser diode 111 is sent
Focus on flourescent sheet 112 and excite flourescent sheet to send fluorescence 122 and 123.Light collimating element 113 is sent for receiving light source 119
Light and collimated to form collimated light 124 and be emitted, the subtended angle of the effective aperture facing light sources luminous point of the light collimating element is
A, A are not more than 60 degree.That is, light collimating element 113 only have collected that light source 119 sends with optical axis included angle within 30 degree
Light 122, be more than 30 degree of light 123, this part and light of the optical axis included angle more than 30 degree with optical axis included angle without receiving
Energy dissipation is fallen.For Lambertian source（That is uniformly light-emitting light source）For, the energy with light of the optical axis included angle within 30 degree
The 25% of gross energy is only accounted for, for light fixture of the present utility model, the light collection efficiency of light collimating element 113 is very low.By
In in the art, light efficiency is low to mean that outgoing light energy is low, also implies that illuminating effect is poor, therefore so low collection efficiency
It is not the conventional design of this area.It is the light because inventor is found through experiments that but why the utility model so designs
The effective aperture of gathering element is smaller to the subtended angle of light source luminescent point, is more collimated by the light beam of light collection device, and simultaneously
Central light strength does not diminish.That is the light that light collimating element is lost to the subtended angle of light source luminescent point is reduced, all
It is the light that angle is larger after light collimating element, and the light intensity at center does not reduce.This obviously with optics textbook
Conclusion simultaneously differs, as long as because said on optics textbook light source be placed in the focus of lens no matter the light of more wide-angles
Line can be collimated, therefore reduction collection angle can also reduce central light strength.
Tested for more than and find that inventor does not have good theoretical explanation, but find 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 utility model, Laser Focusing that laser diode is sent
In flourescent sheet, because laser is the coherent light that is sent by the luminescence chip of very little, very small luminous spot can be formed, so
Highly collimated light beam is formed according to optical theory can.The experiment conclusion found simultaneously using inventor, control light are accurate
Straight 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.Thus
Highly collimated outgoing beam can be obtained, it is outer big all without obvious diffusion change at several meters even tens meters.Such light beam exists
There are many use in decorative lighting.
Preferably, 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, also
, should including the cambered surface reflection mirror array 214 positioned at light collimating element light path rear end, including multiple plane mirror 214a-214e
Multiple plane mirrors are arranged in array along cambered surface.Cambered surface reflection is incided from the collimated light beam 224 of light collimating element outgoing
After lens array 214, each plane mirror 214a, 214b, 214c, 214d, 214e have received respectively sub-fraction light and by its
Reflect and form multiple beamlets 225, each beamlet is also collimated light beam.Because multiple plane mirrors are along an arc
Face is arranged, therefore the normal direction of each speculum is slightly changed, the direction for the multiple beamlets being so reflected by it out
Also it is different.Again because collimated light beam 224 is highly collimated, level crossing does not change the collimation of light, therefore each beamlet
It is and highly collimated.So multiple highly collimated beamlets can be a long way off（Such as outside several meters）Multiple small luminous points are formed, it is real
The decorative illumination effect of existing " babysbreath ".In the present embodiment, the key of " babysbreath " decorative effect is that each luminous point will
Sufficiently small and bright, this requires that the collimation of collimated light beam 224 is sufficiently high, and central light strength is sufficiently large.And exactly because
For it is foregoing the reason for, collimated light beam produced by the utility model embodiment illustrated in fig. 1 has collimation high simultaneously and central light strength
The characteristics of big.
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.Solves this problem in the embodiment shown in fig. 3.Unlike embodiment illustrated in fig. 1, in the present embodiment also
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.It thus can effectively avoid light path long in one direction, but pass through
Cross after the reflection of speculum so that more balanced length is presented in overall light path 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 is located at light source and light collimating element 313
Diaphragm 315a and 315b between light path, diaphragm include loophole 315c, and only 322 part luminous energy pass through in the light that light source is sent
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
Now more preferably collimation.Because the refractive index of transparent material changes with optical wavelength, therefore the light that light source is sent reflects 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 collimated light 424 and be emitted.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, the aberration formed due to the refraction of light is not present in arc reflection plate, therefore is emitted
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 utility model
Also can all use.
In the aforementioned embodiment, Laser Focusing in flourescent sheet and excites flourescent sheet to produce fluorescence, and fluorescence can be to all directions
Isotropic transmitting, therefore the light energy for having half or so is launched towards light source 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 focus 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
Launch towards at least part of can be reflected by the optical thin film of fluorescence of laser diode transmitting towards light collimating element, from
And effectively improve the luminous efficiency of light source.Preferably, the optical thin film is plated in transparent thermal conductive substrate 512a towards fluoresent coating
Surface on, i.e., optical thin film is between transparent thermal conductive substrate and fluoresent coating.The light that so fluoresent coating is sent does not have to wear
Cross transparent thermal conductive substrate can directly to 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 the fluorescence that the luminous half-angle that light source sends is less than or equal to A/2, 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 is scattered and can be emitted again after reflecting, and which part can change direction due to scattering process and be less than or equal to A/ in luminous half-angle
It is emitted in the range of 2, its remaining light is then reflected by optical filter 517 again to be returned to flourescent sheet and be scattered and reflect.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, the problem of light spreads in transparent thermal conductive substrate be present, such as Fig. 6 a institutes
Show.Laser 621 focuses on fluoresent coating 612b after passing through transparent thermal conductive substrate 612a and excites it to launch fluorescence.It is glimmering in Fig. 6 a
Light 631 and 632 is represented with solid arrow, and the remaining laser 633 not by fluoresent coating absorption is represented with dotted arrow.I.e.
Making 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 be at least partly emitted.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 looks 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 here, most of light is directly emitted from here, this area corresponding to center spot 641
Domain is referred to as lasing region, i.e. laser directly excites luminous region.Region beyond lasing region is referred to as non-lasing region, i.e., is not swashed
Light directly excites luminous region.In non-lasing region, shown in Fig. 6 a into the fluorescence 632 spread in transparent thermal conductive substrate
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 Crape ring 642 be present, and spreading existing dark areas 644 outside the 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 --- the position for namely spreading the inner circle of the ring of light 643 is easily calculated.According to several
What optics is understood, corresponds to the incoming position for the fluorescence that can just be totally reflected in transparent thermal conductive substrate lower surface here.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.Such as
For the transparent thermal conductive substrate of sapphire material, n=1.765, then be easily calculatedDegree.With reference to figure 6a, 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 arrives 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, such as
The transparent thermal conductive substrate of the sapphire material of 0.3mm thickness, characteristic distance are 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 lights.At least two technological means can be used in order to reach this purpose.Said in the following embodiments
It is bright.
In the light fixture of the embodiment shown in Fig. 7 a, in addition to it is located at the light that flourescent sheet placement is close in flourescent sheet light path rear end
Late piece 717, diaphragm piece 717 include 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, while point on the edge of transparent area at least be present to exciting the distance of district center to be less than characteristic distance.So
Effective light that lasing region is sent can at least partly pass through transparent area 717a and finally realize decorative lighting purpose, while spread 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 covered by shading region, and it is spuious to reach reduction
The effect of light.Preferably, the ring of light is spread all beyond the transparent area of diaphragm piece, and now point all on the edge of transparent area arrives
Flourescent sheet excites the distance of district center to be both less than characteristic distance, so spread light that the ring of light sends by all by shading region block from
Without influenceing decorative illumination effect.
Diaphragm piece 717 has been used and punched on a piece of opaque sheet material to realize transparent area in embodiment shown in Fig. 7 a
717a.This is a kind of manufacture method of diaphragm piece, and the aperture that the limitation of this method is to punch is difficult to be made small, and impermeable
The thickness of bright sheet material in itself also can form absorption, reflection etc. to the light propagated in transparent area to be influenceed.More preferred, such as Fig. 7 b institutes
Show, diaphragm piece 717 is made up of transparent material, and wherein shading region 717b is formed by shading plated film, and the plated film absorbs or reflection is incident
Light.Transparent material for making diaphragm piece can have multiple choices, 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
It can be realized using semiconductor technology, size, the shape of transparent area almost do not limit, and cost is cheap.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.Preferably, diaphragm piece is coated with shading plating
The one side of film is close to fluoresent coating 712b, and so between the two without the propagation distance of light, diaphragm blocks the region of light just more
Accurately.
Preferably, 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, can thus carry out invalid fluorescence of the luminous half-angle more than A/2 again sharp
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, limitation is not provided to the minimum dimension of transparent area.One
As in order to reach the purpose of the light for maximumlly sending the lasing region on flourescent sheet outgoing, the transparent area of diaphragm piece is obvious
While the lasing region of flourescent sheet is directed at, it should be greater than and the lasing region of flourescent sheet is completely covered, sent with to ensure lasing region
All light are all able to be emitted from transparent area.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 be circle, pentalpha,
Cross star, heart, triangle, square, regular hexagon or ellipse, and the lasing region of flourescent sheet is likely less than, to realize
More abundant decorative effect.Such as the situation shown in Fig. 7 c, the transparent area on diaphragm piece 717 is the star-shaped region of cross
717a, remaining region are 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 and can not be emitted by shading region, 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, with realization 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 be not it is fixed, according to the actual decorative effect to be realized design 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 a kind of 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 figure 8b, non-in fluoresent coating 812b excites
Light absorption paint 812c is at least partly scribbled in area, this scribbles and a region is comprised at least in the part of light absorption paint, in the region
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.Preferably, 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 be covered on fluoresent coating to excite district center in practical operation
For the center of circle and using characteristic distance as the part beyond the border circular areas of radius, that is, coverage diagram 8b in 843 and its periphery
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 is also hardly luminous.Have what is spread in fluoresent coating in coating procedure in view of light absorption paint
Process, therefore the annular dark space just can be as the buffering area of coating light absorption paint, it is particularly the case that lower fluorescence applies 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 applies
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.
Preferably, the optical filter for being close to flourescent sheet placement positioned at flourescent sheet light path rear end is also included 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 glimmering more than A/2
Light.Invalid fluorescence of the luminous half-angle 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 light absorption paint role and beneficial effect in the present embodiment.
In the embodiment above, flourescent sheet is all by transparent thermal conductive substrate and the fluoresent coating coated in its surface is formed.
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 focuses 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 the reflective 912a and fluoresent coating 912b coated 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 forms 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
The can of collimator apparatus 913 is collected and collimated 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.
Preferably, 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 10b, 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 be also when the light collimating element of light path rear end receives the light that the fluorescence radiation hot spot 1041 is sent
Received from 45 degree of direction, therefore receive the look fluorescence radiation hot spot of sub-elliptical of direction in light collimating element to 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, the normal direction of each plane mirror are identical with normal direction of the convex surface where it in this position, it is clear that
The normal direction of each plane mirror, make it that the direction of its multiple beamlet reflected to form is 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 are 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 and normal direction of the concave surface where it in this position
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 be located in the housing 1218, 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 just can allow for all to pass through, specifically at least the size in dimension is less than concave reflection to transparent area in one direction
Size of the lens array in direction dimension.From angles of product, the beamlet that small transparent area can give people to feel all is 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.
Preferably, the transparent area 1218a of surface of shell shape is external in multiple beamlets and passes through what is formed during transparent area
The envelope of total hot spot, such transparent area can both ensure that all beamlets can pass through transparent area, and and can enough ensures transparent area
Area minimize.Preferably, 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 being reflected with realization
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 rotate.The rotation is the normal direction AX circular-rotations along concave surface 1214x centers, with the rotation of 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, multiple small luminous points of rotation are formed, form more rich visual effect.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 light-emitting device outgoing light by the concave reflection lens array reflection after formed multiple beamlet 1325u,
1325v and 1325w etc., the plurality of beamlet are irradiated in target face 1351 and form 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 for the luminous point that beamlet 1325w is 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, and 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 quantity of the unit area plane mirror of rarefaction, and the son being emitted on the plane mirror in compact district
The beamlet being emitted on the plane mirror that the average angle of incidence that light beam is incident in target face is more than in rarefaction is incident in target
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 widens on face so that compact district and rarefaction form adjacent 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 at close to one end of light exit direction on concave surface, 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 rotates or cycle movement, its structure
Schematic diagram is as shown in figure 14.The collimated light that reflecting plate 1414 sends light-emitting device reflects away, and motor driving reflecting plate rotates,
Can controls the scanning of flare, forms the visual effect of motion hot spot.And that reflecting plate can also be driven to do is other for motor
Cycle movement, in a manner of forming other spot motions.
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 include 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.What micro mirror 1514a and 1514b in micro mirror array can be independently controlled 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 can the independent visual effect for being moved by control, forming uniqueness.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
The overall rotation of array of light spots can or periodically motion, the independent control motion with each luminous point can be carried 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.
Embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical areas, similarly it is included in scope of patent protection of the present utility model.
Claims (9)
- A kind of 1. 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；The flourescent sheet includes transparent thermal conductive substrate and depends on the fluoresent coating of the substrate surface, the pole of laser two The laser that pipe is sent focuses on fluoresent coating after passing through the transparent thermal conductive substrate；Transmission laser is coated with transparent thermal conductive substrate surface And the optical thin film of at least part reflected fluorescent light；The fluoresent coating is referred to as lasing region by the incident facula position of Laser Focusing, Region beyond lasing region is referred to as non-lasing region, at least partly scribbles light absorption paint in non-lasing region, this scribbles light absorption paint A region is comprised at least in part, to exciting the distance of district center to be equal to characteristic distance, characteristic distance L is equal to the regional center, wherein, d and n are the thickness and refractive index of transparent thermal conductive substrate respectively；Light collimating element, for receiving the light from the outgoing of diaphragm piece and being collimated outgoing.
- 2. light fixture according to claim 1, it is characterised in that the cambered surface also included positioned at light collimating element light path rear end is anti- 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 light absorption paint is oil paint.
- 5. light fixture according to claim 1 or 2, it is characterised in that the part of light absorption paint is scribbled in the non-lasing region To excite district center it is the center of circle and using characteristic distance as the part beyond the border circular areas of radius on covering fluoresent coating.
- 6. light fixture according to claim 1 or 2, it is characterised in that the effective aperture facing light sources of the light collimating element The subtended angle of luminous point is A；Also include the optical filter for being close to flourescent sheet placement positioned at flourescent sheet light path rear end, for transmiting luminous half Fluorescence of the angle less than or equal to A/2 and at least part Refl-Luminous half-angle are more than A/2 fluorescence.
- 7. 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.
- 8. light fixture according to claim 2, it is characterised in that the cambered surface is concave surface, from the light of light collimating element outgoing The beamlet of multiple convergences is formed after the reflection of concave reflection lens array.
- 9. light fixture according to claim 8, it is characterised in that also including housing, the concave reflection lens array is located at should In housing, surface of shell includes a transparent area, and the multiple beamlet converges at transparent area and passed from transparent area to housing Outside；At least the size in dimension is less than chi of the concave reflection lens array in direction dimension to the transparent area in one direction It is very little.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720694667.5U CN207122764U (en) | 2017-06-14 | 2017-06-14 | Light fixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720694667.5U CN207122764U (en) | 2017-06-14 | 2017-06-14 | Light fixture |
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| CN207122764U true CN207122764U (en) | 2018-03-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166181A (en) * | 2017-06-14 | 2017-09-15 | 杨毅 | Light fixture |
| WO2019210709A1 (en) * | 2018-05-02 | 2019-11-07 | Yang Yi | Light fixture |
-
2017
- 2017-06-14 CN CN201720694667.5U patent/CN207122764U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166181A (en) * | 2017-06-14 | 2017-09-15 | 杨毅 | Light fixture |
| WO2019210709A1 (en) * | 2018-05-02 | 2019-11-07 | Yang Yi | Light fixture |
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| TR01 | Transfer of patent right |
Effective date of registration: 20200107 Address after: 200941 room 1265, building 2, No. 57, Tangnan street, Yuepu Town, Baoshan District, Shanghai Patentee after: Shanghai Anming Technology Center (limited partnership) Address before: 100084, No. 27, Ma Ma Yu West Street, Shijingshan District, Beijing, Guangning Patentee before: Yang Yi |
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| TR01 | Transfer of patent right |
Effective date of registration: 20201209 Address after: Room b59, building 031, 1076 Jungong Road, Yangpu District, Shanghai, 200433 Patentee after: SHANGHAI BLUE LAKE LIGHTING TECH. Co.,Ltd. Address before: Room 1265, building 2, No. 57, Tangnan street, Yuepu Town, Baoshan District, Shanghai, 200941 Patentee before: Shanghai Anming Technology Center (L.P.) |
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