Rod-shaped cladding structure and laser lighting assembly

Abstract

The utility model discloses a rodlike cladding structure and a laser illumination assembly, comprising a blue-red light high reflective film layer and an excitation source, the excitation source is blue light laser, the blue-red light high reflective film layer is internally provided with a green light emission layer, a main body structure layer and a red light emission layer from inside to outside in sequence, the red light emitting layer is located between the blue-red light high-reflective film layer and the main body structure layer, the green light emitting layer is located at the light emitting end of the main body structure layer, and the main body structure layer is a YAG ceramic layer. A green light emitting layer, a main body structure layer and a red light emitting layer are sequentially arranged in the blue-red light high-reflective film layer from inside to outside, the main body structure layer is arranged between the green light emitting layer and the red light emitting layer, and the green light emitting layer and the red light emitting layer are separated by the main body structure layer; the technical problems that according to an illumination structure in the prior art, a red fluorescent film and green fluorescent ceramic are tightly attached, so that light of various colors is re-absorbed, and the luminous intensity is attenuated are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser lighting, in particular to a rod-shaped cladding structure and a laser lighting component. Background Art

[0002] The lighting technology of blue laser remote excitation phosphor has become a current research hotspot, also known as fluorescence conversion laser lighting. It has the advantages of high luminous efficiency, no efficiency sudden drop phenomenon, energy conservation and environmental protection, high light uniformity and collimation. Fluorescent materials for laser lighting in various physical forms have been widely studied. Among them, fluorescent materials such as fluorescent glass, fluorescent ceramics, fluorescent thin films and single crystals are relatively maturely studied. Based on the principle of mixing three primary colors into white light, the components of the above fluorescent materials all emit green light, yellow light, red light, etc. under the excitation of blue laser. Under the excitation of high lumen density blue light, the heat in the unit area of the fluorescent material quickly focuses, resulting in an extremely high temperature (>300 °C), and then causing thermal quenching of the material's luminescence. Therefore, high thermal conductivity fluorescent materials are crucial for the application development of laser lighting.

[0003] For example, the patent with publication number CN117781248A proposes a composite fluorescent ceramic for high-power LD lighting and its preparation method. The composite fluorescent ceramic consists of a red fluorescent thin film, a green fluorescent ceramic, a transparent oxide ceramic, and a concave heat-conducting structure layer from top to bottom; Preparation method: Prepare the mixed raw material powders corresponding to the red fluorescent thin film, the green fluorescent ceramic, and the transparent oxide ceramic. The mixed raw material powder of the red fluorescent thin film is obtained through glass melting, quenching, and grinding to obtain a precursor fluorescent glass powder, and further obtain a fluorescent glass colloid; Prepare the heat-conducting layer composite ceramic from the mixed raw material powders corresponding to the green fluorescent ceramic and the transparent oxide ceramic; Coat the fluorescent glass colloid on the surface of the heat-conducting layer composite ceramic, and after crystallization, embed it into the concave heat-conducting structure layer to obtain the composite fluorescent ceramic.

[0004] The above-mentioned disclosed composite fluorescent ceramic is a fluorescent material with high thermal conductivity. However, the above composite fluorescent ceramic consists of a red fluorescent thin film, a green fluorescent ceramic, a transparent oxide ceramic, and a concave heat-conducting structure layer from top to bottom. Arranging the red fluorescent thin film and the green fluorescent ceramic closely in this way will cause multiple-color light reabsorption, and then lead to problems such as attenuation of the luminous intensity and influence on the light propagation distance. Summary of the Utility Model

[0005] Aiming at the deficiencies in the above background art, the utility model proposes a rod-shaped cladding structure and a laser lighting component, which solve the technical problem that the existing lighting structure arranges the red fluorescent thin film and the green fluorescent ceramic closely, resulting in multiple-color light reabsorption and attenuation of the luminous intensity.

[0006] The technical solution of the present utility model is realized as follows: A rod-shaped cladding structure includes a blue and red light high-reflection film layer. Inside the blue and red light high-reflection film layer, a green light emission layer, a main structure layer, and a red light emission layer are sequentially arranged from inside to outside. The red light emission layer is located between the blue and red light high-reflection film layer and the main structure layer. The green light emission layer is located at the light-emitting end of the main structure layer. The main structure layer is a YAG ceramic layer.

[0007] Preferably, the cross-section of the rod-shaped cladding structure is circular with a diameter of X. The YAG ceramic layer is a rod-shaped YAG ceramic layer, and the length of the rod-shaped YAG ceramic layer is Z, where Z:X = 3 - 9.

[0008] Preferably, the red light emission layer 4 is CaAlSiN3:Eu 2+ fluorescent glass film.

[0009] Preferably, the green light emission layer 3 is LuAG:Ce 3+ fluorescent glass film.

[0010] Preferably, the ratio of the fluorescent powder concentration of the red light emission layer to the fluorescent powder concentration of the green light emission layer is Y, where 0.02 ≤ Y ≤ 0.15.

[0011] Preferably, the laser spot area of the excitation source is N, and the thickness of the green light emission layer is U, where U:N = 0.05 - 0.1.

[0012] Preferably, the thickness of the red light emission layer is W, where W:U = 0.3 - 0.6.

[0013] Preferably, the particle size of the CaAlSiN3:Eu 2+ and LuAG:Ce 3+ is between 150nm - 200nm.

[0014] A laser illumination assembly includes an excitation source and the above-mentioned rod-shaped cladding structure. The excitation source is a blue laser. The excitation source is located on a first heat sink. A support and a cover are provided on the first heat sink. The rod-shaped cladding structure is located between the support and the cover.

[0015] Preferably, the emission wavelength of the excitation source is 450nm - 460nm.

[0016] The present utility model: 1. Inside the blue and red light high-reflection film layer of the present application, a green light emission layer, a main structure layer, and a red light emission layer are sequentially arranged from inside to outside. The main structure layer is arranged between the green light emission layer and the red light emission layer, separating the green light emission layer and the red light emission layer, avoiding the problem of multi-color light reabsorption and resulting in attenuation of the light emission intensity when the green light emission layer and the red light emission layer are closely arranged.

[0017] 2. The green light-emitting layer of this application is LuAG:Ce 3+ fluorescent glass film, and the red light-emitting layer is CaAlSiN3:Eu 2+ fluorescent glass film. Both the top and bottom surfaces of the YAG flake ceramic layer are provided with film layers. Compared with setting a ceramic layer on the top or bottom surface of the YAG flake ceramic layer, the influence on the thermal conductivity of the YAG flake ceramic layer is effectively reduced. The LuAG:Ce 3+ fluorescent glass film and CaAlSiN3:Eu 2+ fluorescent glass film reduce the influence on the thermal conductivity of the YAG flake ceramic layer.

[0018] 3. The excitation source of the rod-shaped cladding structure fluorescent material proposed in this application is a 450nm - 460nm blue laser. The thermal conductivity of the rod-shaped cladding structure is 8 - 12 W / (m•K), the color rendering index is 90 - 95, and the relative color temperature is 4000 K - 6500K. The proposed rod-shaped cladding structure can achieve high thermal conductivity and high-quality light emission. The rod-shaped cladding structure and the laser excitation source can be encapsulated into a high-brightness light-emitting device, which can be widely applied to the fields of laser lighting and display. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is the front view of the present invention.

[0021] Figure 2 is the top view of the present invention.

[0022] Figure 3 is the perspective view of the present invention.

[0023] Figure 4 is the exploded view of the present invention.

[0024] Figure 5 is the excitation spectrum and emission spectrum of the red light-emitting layer of the present invention.

[0025] Figure 6 is the excitation spectrum and emission spectrum of the green light-emitting layer of the present invention.

[0026] Figure 7 is the electroluminescence spectrum of the rod-shaped cladding structure of the present invention under blue light excitation.

[0027] Figure 8Cross-sectional view of the laser illumination component of the present utility model.

[0028] In the figure, 1 is the main structure layer, 2 is the excitation source, 3 is the green light emission layer, 4 is the red light emission layer, 5 is the blue-red light high-reflection film layer, 6 is the rod-shaped cladding structure, 7 is the through hole, 8 is the first heat sink, 9 is the support member, and 10 is the cover body. Specific implementation manner

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Embodiment 1, a rod-shaped cladding structure, as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, including the blue-red light high-reflection film layer 5. Inside the blue-red light high-reflection film layer 5, the green light emission layer 3, the main structure layer 1, and the red light emission layer 4 are sequentially arranged from inside to outside. The red light emission layer 4 is located between the blue-red light high-reflection film layer 5 and the main structure layer 1. The green light emission layer 3 is located at the light-emitting end of the main structure layer 1. The main structure layer 1 is a YAG ceramic layer. In the blue-red light high-reflection film layer 5 of the present application, the green light emission layer 3, the main structure layer 1, and the red light emission layer 4 are sequentially arranged from inside to outside. The main structure layer 1 is arranged between the green light emission layer 3 and the red light emission layer 4, and the main structure layer 1 separates the green light emission layer 3 and the red light emission layer 4, avoiding the problem of multiple-color light reabsorption and resulting in attenuation of the light-emitting intensity when the green light emission layer 3 and the red light emission layer 4 are arranged closely. It solves the technical problem in the prior art that the red fluorescent film and the green fluorescent ceramic are arranged closely in the lighting structure, resulting in multiple-color light reabsorption and attenuation of the light-emitting intensity.

[0031] Among them, through holes 7 are provided on the YAG ceramic layer, and bumps are provided on the green light emission layer 3. The bumps are adapted to the through holes 7. Under the excitation of blue laser light, the red and green films respectively emit red light and green light, which are mixed with the unabsorbed blue light to obtain high-quality white light, and the white light is emitted along the through holes 7.

[0032] Embodiment 2, on the basis of Embodiment 1, a rod-shaped cladding structure, as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the cross-section of the rod-shaped cladding structure is circular with a diameter of X. The YAG ceramic layer is a rod-shaped YAG ceramic layer with a length of Z, where Z:X = 3 - 9. Under the excitation of blue light laser, the red and green thin films emit red light and green light respectively, which are mixed with the unabsorbed blue light to obtain high-quality white light. The closer the ratio of Z:X = 3 - 9 is to 9, the smaller the spot area of the emitted light and the stronger the beam confinement ability.

[0033] Example 3, based on Example 2, a rod-shaped cladding structure, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, the red light emitting layer 4 is CaAlSiN3:Eu 2+ fluorescent glass thin film. The outside of the YAG flake ceramic layer is provided with a CaAlSiN3:Eu 2+ fluorescent glass thin film layer, which effectively reduces the influence on the thermal conductivity of the YAG flake ceramic layer compared with setting a ceramic layer on the top surface of the YAG flake ceramic layer.

[0034] Example 4, based on Example 3, a rod-shaped cladding structure, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 shown, the green light emitting layer 3 is LuAG:Ce 3+ fluorescent glass thin film. That is, thin film layers are provided on both the top and bottom surfaces of the YAG flake ceramic layer. Compared with setting ceramic layers on the top and bottom surfaces of the YAG flake ceramic layer, it effectively reduces the influence on the thermal conductivity of the YAG flake ceramic layer. The LuAG:Ce 3+ fluorescent glass thin film layer and CaAlSiN3:Eu 2+ fluorescent glass thin film layer of this application reduce the influence on the thermal conductivity of the YAG flake ceramic layer.

[0035] Example 5, based on Example 4, a rod-shaped cladding structure, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 shown, the ratio of the fluorescence powder concentration of the red light emitting layer 4 to the fluorescence powder concentration of the green light emitting layer 3 is Y, where 0.02 ≤ Y ≤ 0.15. The color rendering index of the light source can be adjusted by changing the ratio of the concentrations of the green light emitting layer 3 and the red light emitting layer 4.

[0036] Example 6, based on Example 5, a rod-shaped cladding structure, asFigure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in Figure 1 to Figure 6 , the laser spot area of the excitation source 2 is N, and the thickness of the green light emitting layer 3 is U, where U:N = 0.05 - 0.1. The larger the ratio of the laser spot area of the excitation source 2 to the green light emitting layer 3, the higher the color index, which is beneficial to obtaining high-quality white light.

[0037] Example 7, based on Example 6, a rod-shaped cladding structure, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in Figure 1 to Figure 6 , the thickness of the red light emitting layer 4 is W, where W:U = 0.3 - 0.6. The larger the ratio of the thickness of the red light emitting layer 4 to the thickness of the green light emitting layer 3, the higher the color rendering index, which is beneficial to obtaining high-quality white light.

[0038] Example 8, based on Example 7, a rod-shaped cladding structure, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in Figure 1 to Figure 6 , the particle sizes of CaAlSiN3:Eu 2+ and LuAG:Ce 3+ are between 150 nm and 200 nm. The thin film layer with particle sizes all between 200 nm and 250 nm can reduce the pores inside the thin film, which is beneficial to the green light emitting layer 3 to emit green light and the red light emitting layer 4 to emit red light, and improve the quality of the obtained white light.

[0039] Among them, preferably, the particle sizes of the glass matrix of the green light emitting layer 3 and the red light emitting layer 4 are both between 50 nm and 150 nm. When the particle sizes of the glass matrix are both between 50 nm and 150 nm, the pores inside the thin films of the green light emitting layer 3 and the red light emitting layer 4 are reduced, which is beneficial to obtaining high-quality white light.

[0040] When implementing Example 8, the raw materials used in the example are all commercially available products, and the purity is greater than 99.9%. The particle sizes of CaAlSiN3:Eu 2+ and LuAG:Ce 3+ are between 150 nm and 200 nm. The particle sizes of the glass matrix are between 50 nm and 100 nm.

[0041] Wherein the cross-section of the rod-shaped cladding structure is circular with a diameter of X, the YAG ceramic layer is a rod-shaped YAG ceramic layer, the length of the rod-shaped YAG ceramic layer is Z, and Z:X = 3 to 9. Taking Z:W = 3, Z:W = 6, and Z:W = 9 as examples respectively.

[0042] The specific steps are as follows: When Z:W = 3,

[0043] (1) Ethyl acetate, terpineol, and ethyl cellulose are added to the mixed glass matrix and fluorescent powder to obtain a gel-like material, and a green body of the rod-shaped cladding structure containing a circumferential red light layer and a green light fluorescent material at the light-emitting end is prepared with the aid of a mold. Based on the total mass of the mixed glass matrix and fluorescent powder, the dosage of ethyl acetate is 3 - 4 times the total mass of the powder, the dosage of terpineol is 0.5 - 1 times the total mass of the powder, and the dosage of ethyl cellulose is 1 - 2 times the total mass of the powder. The ratio of the length Z of the rod-shaped YAG ceramic green body to the diameter X of the fluorescent material of the rod-shaped cladding structure is set to 3, the ratio Y of the concentration of the circumferential red light fluorescent powder to the concentration of the green light fluorescent powder at the light-emitting end is set to 0.05, the ratio of the thickness U of the green light fluorescent material layer at the light-emitting end to the above X is set to 0.05, and the ratio of the thickness W of the first red light emission layer of the rod-shaped cladding structure to the above U is set to 0.3.

[0044] (2) The dried green body is sintered in a low-temperature nitrogen atmosphere to obtain an uncoated rod-shaped cladding structure fluorescent material. The nitrogen atmosphere sintering conditions are as follows: First, the green body sample is kept at 120 o °C for 0.5 h, and then kept at 450 o °C for 0.5 h. After the heat preservation is completed, the sample is cooled to room temperature in the nitrogen atmosphere of the furnace. It is heated to 120 o °C at a heating rate of 0.25 o °C / min, and heated to 450 o °C at a heating rate of 1 o °C / min.

[0045] (3) A blue-red light high-reflection film layer is circumferentially coated on the sintered rod-shaped cladding structure fluorescent material to obtain the rod-shaped cladding structure fluorescent material.

[0046] (4) When the obtained rod-shaped cladding structure fluorescent material is excited by a 455 nm blue laser, the color rendering index (CRI) of the obtained light source is 91, the correlated color temperature (CCT) is 4627 K, and the thermal conductivity of the rod-shaped cladding structure fluorescent material is 9 W / (m·K).

[0047] The specific steps are as follows: When Z:W = 6,

[0048] (1) Ethyl acetate, terpineol, and ethyl cellulose are added to the mixed glass matrix and fluorescent powder to obtain a gel-like material, and a rod-shaped cladding structure green body containing a circumferential red light layer and a light-emitting end green fluorescent material is prepared with the assistance of a mold. Based on the total mass of the mixed glass matrix and fluorescent powder, the dosage of ethyl acetate is 3 - 4 times the total mass of the powder, the dosage of terpineol is 0.5 - 1 times the total mass of the powder, and ethyl cellulose is 1 - 2 times the total mass of the powder. The ratio of the length Z of the rod-shaped YAG ceramic green body to the diameter X of the rod-shaped cladding structure fluorescent material is set to 6, the value of the ratio Y of the circumferential red light fluorescent powder concentration to the light-emitting end green fluorescent powder concentration is set to 0.1, the ratio of the thickness U of the light-emitting end green fluorescent material layer to the above X is set to 0.07, and the ratio of the thickness W of the first red light emission layer of the rod-shaped cladding structure to the above U is set to 0.45.

[0049] (2) The dried green body is sintered in a low-temperature nitrogen atmosphere to obtain an uncoated rod-shaped cladding structure fluorescent material. The nitrogen atmosphere sintering conditions are as follows: First, the green body sample is kept at 135 o °C for 45 min, then kept at 475 o °C for 45 min, and after the heat preservation ends, the sample is cooled to room temperature in the nitrogen atmosphere with the furnace. It is heated to 135 o °C at a heating rate of 0.4 o °C / min, and heated to 475 o °C at a heating rate of 1.5 o °C / min.

[0050] (3) The sintered rod-shaped cladding structure fluorescent material is circumferentially coated with a blue-red light high-reflection film layer to obtain the said rod-shaped cladding structure fluorescent material.

[0051] (4) When the obtained rod-shaped cladding structure fluorescent material is excited by a 455 nm blue laser, the color rendering index (CRI) of the obtained light source is 93, the correlated color temperature (CCT) is 5032 K, and at the same time, the thermal conductivity of the rod-shaped cladding structure fluorescent material is 11 W / (m·K).

[0052] The specific steps are: When Z:W = 9,

[0053] (1) Ethyl acetate, terpineol, and ethyl cellulose are added to the mixed glass matrix and fluorescent powder to obtain a gel-like material. A rod-shaped cladding structure green body containing a circumferential red light layer and a light-emitting end green fluorescent material is prepared with the assistance of a mold. Based on the total mass of the mixed glass matrix and fluorescent powder, the dosage of ethyl acetate is 3 - 4 times the total mass of the powder, the dosage of terpineol is 0.5 - 1 times the total mass of the powder, and the ethyl cellulose is 1 - 2 times the total mass of the powder. The ratio of the length Z of the rod-shaped YAG ceramic green body to the diameter X of the rod-shaped cladding structure fluorescent material is set to 9, the value Y of the ratio of the circumferential red light fluorescent powder concentration to the light-emitting end green fluorescent powder concentration is set to 0.15, the ratio of the thickness U of the light-emitting end green fluorescent material layer to the above X is set to 0.1, and the ratio of the thickness W of the first red light emission layer of the rod-shaped cladding structure to the above U is set to 0.6.

[0054] (2) The dried green body is sintered in a low-temperature nitrogen atmosphere to obtain an uncoated rod-shaped cladding structure fluorescent material. The nitrogen atmosphere sintering conditions are as follows: First, the green body sample is kept at 150 o °C for 1 h, then kept at 500 o °C for 1 h. After the heat preservation ends, the sample is cooled to room temperature in the nitrogen atmosphere of the furnace. It is heated to 150 o °C at a heating rate of 0.5 o °C / min, and heated to 500 o °C at a heating rate of 2 o °C / min.

[0055] (3) A blue-red light high-reflection film layer is circumferentially coated on the sintered rod-shaped cladding structure fluorescent material to obtain the rod-shaped cladding structure fluorescent material.

[0056] (4) When the obtained rod-shaped cladding structure fluorescent material is excited by a blue laser at 455 nm, the color rendering index (CRI) of the obtained light source is 95, the correlated color temperature (CCT) is 6225 K, and at the same time, the thermal conductivity of the rod-shaped cladding structure fluorescent material is 12 W / (m·K).

[0057] Example 9, based on any one of Examples 1 - 8, a laser illumination assembly, as Figure 8 shown, includes an excitation source 2 and the above-mentioned rod-shaped cladding structure 6. The excitation source 2 is a blue laser. The excitation source 2 is located on a first heat sink 8. A support 9 and a cover 10 are provided on the first heat sink 8. The rod-shaped cladding structure 6 is located between the support 9 and the cover 10. The rod-shaped cladding structure 6 is coaxially arranged with the excitation source 2. The first heat sink 8 is bonded to the excitation source 2. The support 9 and the cover 10 cooperate to clamp the rod-shaped cladding structure 6, thereby forming the laser illumination assembly of the present application. The first heat sink 8 can be bonded to the support 9 and the cover 10 respectively.

[0058] Embodiment 10. On the basis of Embodiment 9, a laser illumination component, as Figure 8 shown, the emission wavelength of the excitation source 2 is 450 nm - 460 nm. When the emission wavelength of the excitation source 2 is 455 nm - 465 nm, it is beneficial to excite the green light emitting layer 3 and the red light emitting layer 4, and improve the quality of the obtained white light.

[0059] When implementing Embodiment 10, the excitation source 2 is bonded to the first heat sink 8, then the support member 9 is bonded to the first heat sink 8, then the rod-shaped cladding structure 6 is placed on the support member 9, and then the rod-shaped cladding structure 6 is pressed and limited by the cover plate 8 and the cover body 10 is bonded to the first heat sink 8, thus forming the laser illumination component of the present application.

[0060] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A rod-shaped cladding structure, comprising a blue-red light highly reflective film layer (5), characterized in that: The blue-red light high reflection film layer (5) is provided with a green light emission layer (3), a main structure layer (1) and a red light emission layer (4) in sequence from the inside to the outside; the red light emission layer (4) is located between the blue-red light high reflection film layer (5) and the main structure layer (1); the green light emission layer (3) is located at the light output end of the main structure layer (1); and the main structure layer (1) is a YAG ceramic layer.

2. The rod-shaped cladding structure according to claim 1, characterized in that: The cross section of the rod-shaped cladding structure is circular, with a diameter of X, the YAG ceramic layer is a rod-shaped YAG ceramic layer, the length of the rod-shaped YAG ceramic layer is Z, and Z:X=3-9.

3. The rod-shaped cladding structure according to claim 2, characterized in that: The red light emitting layer (4) is a CaAlSiN3:Eu2+ fluorescent glass film.

4. The rod-shaped cladding structure according to claim 3, characterized in that: The green light emitting layer (3) is a LuAG:Ce3+ fluorescent glass film.

5. The rod-shaped cladding structure according to claim 4, characterized in that: The thickness of the red light emitting layer (4) is W, where W:U=0.3-0.

6.

6. The rod-shaped cladding structure according to claim 5, characterized in that: The particle sizes of the CaAlSiN3:Eu2+ and LuAG:Ce3+ are between 150nm and 200nm.

7. A laser lighting assembly, characterized in that: The invention comprises an excitation source (2), a first heat sink (8) and a rod-shaped cladding structure (6) according to any one of claims 1 to 6, wherein the excitation source (2) is a blue light laser, the excitation source (2) is located on the first heat sink (8), a support member (9) and a cover (10) are provided on the first heat sink (8), and the rod-shaped cladding structure (6) is located between the support member (9) and the cover (10).

8. The laser lighting assembly according to claim 7, characterized in that: The laser spot area of ​​the excitation source (2) is N, the thickness of the green light emitting layer (3) is U, and U:N=0.05-0.

1.

9. The laser lighting assembly according to claim 7 or 8, characterized in that: The emission wavelength of the excitation source (2) is 450nm-460nm.

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