CN209309701U - A kind of laser lighting device - Google Patents
A kind of laser lighting device Download PDFInfo
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- CN209309701U CN209309701U CN201920282387.2U CN201920282387U CN209309701U CN 209309701 U CN209309701 U CN 209309701U CN 201920282387 U CN201920282387 U CN 201920282387U CN 209309701 U CN209309701 U CN 209309701U
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- fluorescence coating
- phase color
- color mirror
- heat
- layer
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Abstract
The utility model relates to a kind of laser lighting devices, including blue laser source and fluorescence coating, the fluorescence coating is used to receive the light of the blue laser source transmitting, the side of blue laser source is provided with two-phase color mirror in the fluorescence coating, direct irradiation face and the two-phase color mirror of fluorescence coating fit closely, and the fluorescence coating and two-phase color mirror are respectively positioned in the optical path of the blue laser source and are vertically arranged with the optical path.The utility model has the beneficial effects that: promoting light efficiency, the blue laser of identical energy is obtained brighter white light, reduces energy consumption, can be applied in more powerful laser illumination system, reduce the structure size of laser illumination system by this device.
Description
Technical field
The utility model relates to a kind of laser lighting devices, belong to technical field of laser illumination.
Background technique
At present in technical field of laser illumination, most of is all by blue laser direct irradiation and by phosphor powder layer or glimmering
Light ceramic (hereafter referred to collectively as fluorescence coating), blue laser direct irradiation can generate exciting light on fluorescence coating, through fluorescence coating, swash
It shines and forms white laser after mixing with the blue laser through fluorescence coating.
But the exciting light that blue laser direct irradiation generates on fluorescence coating, only about 30% exciting light can lead to
Fluorescence coating is crossed, remaining most exciting light can not be utilized, and cause the utilization rate of exciting light lower, in addition white sharp in generation
While light, thermal energy can be also generated, so that fluorescence coating temperature is stepped up, the raising of fluorescence coating temperature can reduce afterwards to a certain extent
The launching efficiency of fluorescence coating, while fluorescence coating also can be even because of uneven heating, causes to rupture.
Utility model content
According to the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a kind of laser lightings
Device, the excitation light utilization efficiency to solve existing laser lighting device is low and fluorescence coating is because uneven heating is even leads to asking for rupture
Topic.
The utility model be solve the problems, such as it is set forth above used by technical solution be:
In order to solve the above technical problems, a kind of laser lighting device, including blue laser source and fluorescence coating, the fluorescence coating
For receiving the light of the blue laser source transmitting, the side of blue laser source is provided with two-phase color in the fluorescence coating
Mirror, direct irradiation face and the two-phase color mirror of fluorescence coating fit closely, and the fluorescence coating and two-phase color mirror are respectively positioned on the blue
It is vertically arranged in the optical path of laser source and with the optical path.
Preferably, the wave band section of the two-phase color mirror is 440-460nm, transmissivity 70-90%；Or two-phase color mirror
Wave band section be 480-700nm, transmissivity 0-5%, it is applied widely.
Preferably, described kind of laser lighting device further includes the silica gel between two-phase color mirror and fluorescence coating, silica gel
Transmissivity is 99%, and the wave band section of two-phase color mirror is 480-700nm, transmissivity 0-5%.The effect of silica gel is to increase to lead
Heat area, the thermal conductivity of silica gel are greater than the thermal conductivity of air, can radiate faster, silica gel can be organic silica gel and inorganic silica gel
Two kinds.
Preferably, described kind of laser lighting device further includes the thermal conductive substrate being fixed on fluorescence coating.Increase thermally conductive lining
Bottom can bear the blue laser irradiation of higher energy, improve white laser brightness so that fluorescence coating has better heat dissipation effect.
Preferably, the thermal conductive substrate includes Gold plated Layer, gold-tin alloy layer and heat-conducting layer, fluorescence coating, heat-conducting layer and Jin Xi
Alloy-layer is perpendicular to the optical axis setting of blue laser source, Gold plated Layer is provided on fluorescence coating, between heat-conducting layer and Gold plated Layer
It is welded to connect by gold-tin alloy layer, fluorescence coating is fixed on heat-conducting layer using Gold plated Layer and gold-tin alloy layer, Gold plated Layer,
The center of gold-tin alloy layer and heat-conducting layer offers the light hole passed through for optical path, and the Gold plated Layer on fluorescence coating is not to play instead
Film is penetrated to act on, but connection function, and heating conduction is good.
Preferably, the heat-conducting layer is copper sheet, and select the reason of copper is as heat-conducting layer: copper is the strong metal of the capacity of heat transmission
In, thermal expansion coefficient can prevent under high-temperature condition, temperature is excessively high, the thermal expansion of heat-conducting layer and fluorescence ceramics closest to ceramics
Difference of coefficients is too big, and fluorescence ceramics is caused to rupture, and fluorescence ceramics, heat-conducting layer and gold-tin alloy dielectric layer are perpendicular to optical axis,
So that the temperature at fluorescence ceramics center is uniformly extended out to XY axis direction, and it is uniformly diffused into heat-conducting layer, prevents fluorescence ceramics center
It is even with edge uneven heating, lead to fluorescence ceramics swelling fracture.
Preferably, the fluorescence coating, two-phase color mirror, heat-conducting layer are round or rectangular laminated structure, various structures.
Preferably, circular groove A is offered on the heat-conducting layer, two-phase color mirror is embedded in circular groove A, circular groove
The center A offers circular groove B10, and fluorescence coating edge is located in circular groove B10, reduces the structure ruler of laser illumination system
It is very little.
Preferably, the heat-conducting layer with a thickness of 0.5-2mm, fluorescence coating with a thickness of 0.1-0.25mm, two-phase color mirror
With a thickness of 0.6-0.8mm, reduce the structure size of laser illumination system.
Preferably, the wave band section of the two-phase color mirror is 440-460nm, transmissivity 80-95%；Or two-phase color mirror
Wave band section be 480-700nm, transmissivity 0-5%, it is applied widely.
Preferably, the fluorescence coating is fluorescence ceramics.
Preferably, it is fitted closely between the two-phase color mirror and fluorescence coating by external clamping device.
The utility model has the beneficial effects that: promoting light efficiency, the blue laser of identical energy is obtained by this device
Brighter white light reduces energy consumption, can apply in more powerful laser illumination system, reduce the structure ruler of laser illumination system
It is very little.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar
Element or part are generally identified by similar appended drawing reference.In attached drawing, each element or part might not be according to actual ratios
It draws.
Fig. 1 is the structural schematic diagram of the utility model embodiment one；
Fig. 2 is the structural schematic diagram of the utility model embodiment two；
Fig. 3 is the main view of the utility model embodiment three；
Fig. 4 is the top view of the utility model embodiment three；
Fig. 5 is the sectional view of the utility model embodiment three；
Fig. 6 is the structure enlargement diagram of the gold-tin alloy layer of the utility model embodiment three；
Fig. 7 is the perspective view of the utility model embodiment four；
Fig. 8 is software simulation infrared thermal imaging of the traditional structure under 5W irradiation condition；
Fig. 9 is software simulation infrared thermal imaging of the traditional structure in 10W irradiation condition；
Figure 10 is software simulation infrared thermal imaging of the embodiment three in 5W irradiation condition；
Figure 11 is software simulation infrared thermal imaging of the embodiment three in 5W irradiation condition.
Wherein, in figure: 1, blue laser source 2, fluorescence coating 3, two-phase color mirror 4, silica gel 5, Gold plated Layer 6, gold-tin alloy
Layer 7, heat-conducting layer 8, light hole 9, circular groove A 10, circular groove B 11, the air gap 12, direct irradiation face 13, width
Spectrum yellow light 14, white light.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solutions of the utility model.Following embodiment is only
For clearly illustrating the technical solution of the utility model, therefore it is only used as example, and it is originally practical to cannot be used as a limitation limitation
Novel protection scope.
Embodiment one
Referring to Fig.1, a kind of laser lighting device described in present embodiment, including blue laser source 1 and fluorescence coating
2, the fluorescence coating 2 is used to receive the light that the blue laser source 1 emits, in the fluorescence coating 2 close to blue laser source 1
Side is provided with two-phase color mirror 3, and direct irradiation face (12) and the two-phase color mirror 3 of fluorescence coating 2 fit closely, and the fluorescence coating 2
It is respectively positioned in the optical path of the blue laser source 1 with two-phase color mirror 3 and is vertically arranged with the optical path.
The wave band section of the two-phase color mirror 3 is 480-700nm, transmissivity 0-5%.
Originally be the working principle of embodiment: blue laser is radiated in two-phase color mirror 3, can largely be passed through；Fluorescence coating 2
Direct irradiation face 12 on exciting light be radiated in two-phase color mirror 3, two-phase color mirror 3 the exciting light SPECTRAL REGION in reflection
State, therefore two-phase color mirror 3 changes the direction of illumination of unemployed about 60% exciting light in the part reversely, makes it through glimmering
After photosphere 2 and remaining 30% exciting light converge, then with blue laser light mixing, form white laser.
Two-phase color mirror 3 is fitted closely with fluorescence coating 2, unlimited close between fluorescence coating 2 and two-phase color mirror 3.So that fluorescence coating 2
Direct irradiation face 12 on the exciting light that generates transmitted in the air gap 11 between fluorescence coating 2 and two-phase color mirror 3, improving should
The utilization rate of part exciting light.
In the present embodiment, using fluorescence ceramics as fluorescence coating 2, test result is as follows:
| Fluorescence ceramics+blue laser | Fluorescence ceramics+two-phase color mirror+blue laser | |
| Colour temperature | 7000K | 6000K |
| Color | White light (partially blue) | White light |
It can be seen that after increasing two-phase color mirror, adjusting two-phase color mirror in 480- under conditions of fluorescence ceramics are certain
The transmissivity of 700nm range, adjustable entirety colour temperature.
Embodiment two
It the difference is that, further include the silica gel between two-phase color mirror 3 and fluorescence coating 2 with embodiment one referring to Fig. 2
4, the transmissivity of silica gel 4 is 99%, and the wave band section of two-phase color mirror 3 is 480-700nm, transmissivity 0-5%.
Originally be the working principle of embodiment: blue laser is radiated in two-phase color mirror 3, can largely be passed through；Fluorescence coating 2
Direct irradiation face 12 on exciting light be radiated in two-phase color mirror 3, two-phase color mirror 3 the exciting light SPECTRAL REGION in reflection
State, therefore two-phase color mirror changes the direction of illumination of unemployed about 60% exciting light in the part reversely, makes it through glimmering
After photosphere 2 and remaining 30% exciting light converge, then with blue laser light mixing, form white laser.
The effect of silica gel 4 is to increase heat-conducting area, and the thermal conductivity of silica gel 4 is greater than the thermal conductivity of air, can be radiated faster,
Silica gel 4 can be organic silica gel.
Embodiment three
It the difference is that, further include the thermal conductive substrate being fixed on fluorescence coating 2 with embodiment one referring to Fig. 3-6；It is described
Thermal conductive substrate includes Gold plated Layer 5, gold-tin alloy layer 6 and heat-conducting layer 7, and fluorescence coating 2, heat-conducting layer 7 and gold-tin alloy layer 6 are vertical
It is arranged in the optical axis of blue laser source 1, is provided with Gold plated Layer 5 on fluorescence coating 2, passes through Jin Xihe between heat-conducting layer 7 and Gold plated Layer 5
Layer gold 6 is welded to connect, and fluorescence coating 2 is fixed on heat-conducting layer 7 using Gold plated Layer 5 and gold-tin alloy layer 6, Gold plated Layer 5, golden tin
The center of alloy-layer 6 and heat-conducting layer 7 offers the light hole 8 passed through for optical path；The heat-conducting layer 7 is copper sheet；The fluorescence
Layer 2, two-phase color mirror 3, heat-conducting layer 7 are rectangular laminated structure；The heat-conducting layer 7 with a thickness of 0.5-2mm, the thickness of fluorescence coating 2
Degree be 0.1-0.25mm, two-phase color mirror 3 with a thickness of 0.6-0.8mm；The wave band section of the two-phase color mirror 3 is 440-460nm,
Transmissivity is 80-95%.
Originally be the working principle of embodiment: blue laser is radiated on fluorescence coating 2, while generating exciting light, also can
Heat is generated, so that 2 temperature of fluorescence coating increases, 2 temperature of fluorescence coating increases the excitation effect that can reduce fluorescence coating 2 afterwards to a certain extent
Rate, while also can be even because of uneven heating, cause fluorescence coating 2 to rupture, increasing thermal conductive substrate can radiate rapidly, by the upper of fluorescence coating 2
Temperature effectively reduce.
To be only arranged after laser lighting device and the present embodiment improvement of the traditional structures such as fluorescence coating and blue laser source
The laser lighting device of increase conductive structure be subjects, test result is as follows:
It can be seen that conclusion 1: under 5W laser irradiation, the central temperature of conductive structure product can reduce by 16.8%,
Under 10W laser irradiation, the central temperature of conductive structure product can reduce by 3.5%.
Conclusion 2: under 5W laser irradiation, the light efficiency of conductive structure product rises 12% on year-on-year basis, under 10W laser irradiation,
The light efficiency of conductive structure product rises 2% on year-on-year basis.
See attached drawing 8,9,10,11, on traditional structure, the uniformity of temperature profile on fluorescence ceramics；Increase the fluorescence of heat-conducting layer
On ceramics, for Temperature Distribution with central point (illuminated laser spot) highest, central point is more peripheral, and temperature is lower, shows heat-conducting layer to glimmering
The excellent in heat dissipation effect of light ceramic.
Example IV
Referring to Fig. 7, the difference is that, the fluorescence coating 2, two-phase color mirror 3, heat-conducting layer 7 are circle with embodiment three
Laminated structure；Circular groove A9 is offered on the heat-conducting layer 7, two-phase color mirror 3 is embedded in circular groove A9, circular groove A9
Center offers circular groove B10, and the edge of fluorescence coating 2 is located in circular groove B10.
Originally it is the working principle of embodiment: offers circular groove A9 on heat-conducting layer, two-phase color mirror is embedded round recessed
In slot A9, the center circular groove A9 offers circular groove B10, and fluorescence coating edge is located in circular groove B10, reduces laser
The structure size of lighting system.
The above various embodiments is only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to aforementioned
The utility model is described in detail in each embodiment, those skilled in the art should understand that: it still can be with
It modifies the technical solutions described in the foregoing embodiments, or some or all of the technical features is equal
Replacement；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution various embodiments of the utility model technical side
The range of case should all cover in the claim of the utility model and the range of specification.
Claims (10)
1. a kind of laser lighting device, it is characterised in that: including blue laser source (1) and fluorescence coating (2), the fluorescence coating (2)
For receiving the light of the blue laser source (1) transmitting, set in the fluorescence coating (2) close to the side of blue laser source (1)
It is equipped with two-phase color mirror (3), direct irradiation face (12) and the two-phase color mirror (3) of fluorescence coating (2) fit closely, and the fluorescence coating
(2) it is respectively positioned in the optical path of the blue laser source (1) and is vertically arranged with the optical path with two-phase color mirror (3).
2. a kind of laser lighting device as described in claim 1, it is characterised in that: the wave band section of the two-phase color mirror (3)
For 440-460nm, transmissivity 70-90%；Or the wave band section of two-phase color mirror (3) is 480-700nm, transmissivity 0-
5%.
3. a kind of laser lighting device as described in claim 1, it is characterised in that: further include be located at two-phase color mirror (3) with it is glimmering
Silica gel (4) between photosphere (2), the transmissivity of silica gel (4) are 99%, and the wave band section of two-phase color mirror (3) is 480-700nm,
Transmissivity is 0-5%.
4. a kind of laser lighting device as described in claim 1, it is characterised in that: further include being fixed on fluorescence coating (2)
Thermal conductive substrate.
5. a kind of laser lighting device as claimed in claim 4, it is characterised in that: the thermal conductive substrate include Gold plated Layer (5),
Gold-tin alloy layer (6) and heat-conducting layer (7), fluorescence coating (2), heat-conducting layer (7) and gold-tin alloy layer (6) are perpendicular to blue laser
The optical axis in source (1) is arranged, and is provided with Gold plated Layer (5) on fluorescence coating (2), passes through Jin Xihe between heat-conducting layer (7) and Gold plated Layer (5)
Layer gold (6) is welded to connect, and fluorescence coating (2) is fixed on heat-conducting layer (7) using Gold plated Layer (5) and gold-tin alloy layer (6), is plated
The center of layer gold (5), gold-tin alloy layer (6) and heat-conducting layer (7) offers the light hole (8) passed through for optical path.
6. a kind of laser lighting device as claimed in claim 5, it is characterised in that: the heat-conducting layer (7) is copper sheet.
7. a kind of laser lighting device as claimed in claim 6, it is characterised in that: the fluorescence coating (2), two-phase color mirror (3),
Heat-conducting layer (7) is round or rectangular laminated structure.
8. a kind of laser lighting device as claimed in claim 7, it is characterised in that: offer circle on the heat-conducting layer (7)
Groove A (9), two-phase color mirror (3) are embedded in circular groove A (9), and circular groove A (9) center offers circular groove B
(10), fluorescence coating (2) edge is located in circular groove B (10).
9. a kind of laser lighting device as claimed in claim 8, it is characterised in that: the heat-conducting layer (7) with a thickness of 0.5-
2mm, fluorescence coating (2) with a thickness of 0.1-0.25mm, two-phase color mirror (3) with a thickness of 0.6-0.8mm.
10. such as a kind of described in any item laser lighting devices of claim 1-9, it is characterised in that: the fluorescence coating (2) is glimmering
Light ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920282387.2U CN209309701U (en) | 2019-03-06 | 2019-03-06 | A kind of laser lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920282387.2U CN209309701U (en) | 2019-03-06 | 2019-03-06 | A kind of laser lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209309701U true CN209309701U (en) | 2019-08-27 |
Family
ID=67682021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920282387.2U Active CN209309701U (en) | 2019-03-06 | 2019-03-06 | A kind of laser lighting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209309701U (en) |
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2019
- 2019-03-06 CN CN201920282387.2U patent/CN209309701U/en active Active
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