High-quality remote excitation fluorescent ceramic green light LD device and method of using same

Abstract

The application discloses high-quality remote excitation fluorescent ceramic type green light LD device and a use method thereof, which comprises a laser light source assembly, a lens barrel, green light fluorescent ceramic and a Fresnel lens, one end of the lens barrel is connected with a sliding lens which slides along an axial direction, and the green light fluorescent ceramic is installed in the sliding lens; the other end of the lens barrel is installed with the Fresnel lens and fixed in the lens barrel through the laser light source assembly, the laser light source assembly is detachably connected with the lens barrel, and a heat dissipation assembly matched with the lens barrel is arranged outside the laser light source assembly. The light emitted by the laser light source assembly enters the lens barrel and passes through the Fresnel lens and the green light fluorescent ceramic and is finally emitted through the sliding lens, the heat generated by the laser light source assembly and the heat generated by the green light fluorescent ceramic during work are dissipated through the heat dissipation assembly, so that the light emitted by the laser light source assembly can continuously and stably emit green light through the green light fluorescent ceramic, and the service stability of the green light LD under high-power continuous work is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of laser display technology, and in particular to a high-quality remotely excited fluorescent ceramic green light LD device and its usage method. Background Technology

[0002] Laser displays boast advantages such as a wide color gamut and high-definition video image reproduction in both geometry and color, and are considered by the international industry as the next-generation display technology after monochrome, standard color, and digital displays. Laser displays are a new type of display technology that uses red, green, and blue primary color lasers or multi-primary color lasers as light sources. Due to their high manufacturing costs and the fact that the human eye is most sensitive to green light, green laser light sources have become their core components. However, limited by current semiconductor manufacturing processes, the limiting photoelectric conversion efficiency of LDs is only 40%, and waste heat deposition directly affects the overall performance of green LDs. Under strong laser irradiation, phosphor powder suffers severe thermal quenching, and silicone resin undergoes irreversible thermal carbonization. These drawbacks severely impact the reliability and green light quality of green LDs, limiting their application prospects in the laser display field.

[0003] Fluorescent ceramics not only possess the luminescent properties of phosphors but also the thermal conductivity of ceramic materials. Furthermore, they exhibit high conversion efficiency and strong luminescence stability, making them a promising candidate to replace phosphors and silicone resins as key materials. Domestic and international scholars have conducted extensive tailoring and performance fine-tuning of green fluorescent ceramics, achieving significant research results. The literature (Journal of Advanced Ceramics, 2019, 8(3):0-0) modulates the performance of Y by doping Ga. 2.985 Al 5-x Ga x O 12 While Ce fluorescent ceramics offer excellent luminescence properties, their ability to improve thermal stability is limited. Therefore, external heat dissipation design and physical distance control are effective ways to improve the thermal stability and optical quality of green LEDs.

[0004] Existing technologies, such as CN217903679U, disclose a heat dissipation device for remotely exciting green ceramic light emission using a single laser diode. This patent mainly relies on the device's natural convection to dissipate heat from the existing ceramic, without considering the ceramic composition design. Furthermore, the excitation light source is only a single diode, making it unsuitable for high-power laser lighting and display applications. Another existing technology, such as Chinese patent CN115360282A, discloses a high-power remotely excited fluorescent ceramic white LED with heat dissipation technology. This patent designs heat dissipation for both the excitation light source and the luminescent material separately, only considering the mathematical relationship between the luminescent area and the spatial distance to the fluorescent ceramic, without taking into account the luminescence quality. LEDs are surface light sources, while LDs are point light sources; their heat dissipation designs and the requirements for fluorescent materials are fundamentally different. Yet another existing technology, such as CN113683407A, discloses a high-brightness, high-thermal-stability yellow-green fluorescent ceramic and its preparation method. This patent emphasizes Li... + Doping improves the thermal stability of fluorescent ceramics, but neglects the optical performance of the actual packaged fluorescent ceramics. For example, CN115102027A discloses a miniaturized high-power, high-brightness green laser: this patent simply integrates a green light source without considering heat dissipation or the thermal stability of the green light-emitting material. Another example is Chinese patent CN114665359A, which discloses a high-stability air-cooled green laser: this patent suffers from mode hopping and large linewidth issues after nonlinear transformations such as second harmonic generation, and a single heat dissipation method cannot solve the thermal deposition problem of the frequency-doubling crystal itself. Finally, CN216794221U, a utility model patent, discloses an air-cooled ultrafast green laser: this patent merely adds a rotating base to the outside of the green laser without any specific performance control.

[0005] In summary, current fluorescent ceramics exhibit poor luminescence thermal stability and are highly susceptible to thermal quenching. Furthermore, green laser devices lack adequate heat dissipation design, resulting in excessively high temperatures at the excitation source during operation, severely impacting their applicability in the laser display field. Therefore, designing a high-quality green LD with excellent heat dissipation performance is urgently needed. Summary of the Invention

[0006] To address the shortcomings in the aforementioned background technology, this invention proposes a high-quality remotely excited fluorescent ceramic green LD device and its usage method, solving the technical problems of heat dissipation of green laser light sources and thermal quenching of luminescent materials in the prior art.

[0007] The technical solution of the present invention is implemented as follows: a high-quality remotely excited fluorescent ceramic green light LD includes a laser source assembly, a lens barrel, a green fluorescent ceramic and a Fresnel lens. One end of the lens barrel is connected to a sliding lens that slides along the axial direction, and the green fluorescent ceramic is installed inside the sliding lens. The other end of the lens barrel is equipped with a Fresnel lens and is fixed inside the lens barrel by the laser source assembly. The laser source assembly is detachably connected to the lens barrel, and a heat dissipation assembly that cooperates with the laser source assembly is provided on the outside of the lens barrel.

[0008] Furthermore, the chemical formula of the green fluorescent ceramic (1) is as follows: y MgO- x TiO2- w (Y 1-z Ce z )3Sc 2.5 Al 2.5 O 12 Where x is the amount of TiO2 added and y is the amount of MgO added. w For (Y) 1-z Ce z )3Sc 2.5 Al 2.5 O 12 The amount added, z is the Ce doping amount, 0.2≤ y ≤0.4, 0.1≤ x ≤0.2, 0.02≤ z ≤0.04, and w =1- x - y The absorption peak of the green fluorescent ceramic is 440nm~460nm, the emission peak is 500nm~530nm, and the thickness of the green fluorescent ceramic is 0.2mm~0.5mm.

[0009] Furthermore, the sliding lens includes a sliding lens barrel and an end cap. One end of the sliding lens barrel is provided with a mounting ring, and the mounting ring is provided with a mounting groove that mates with the fluorescent ceramic. The mounting ring is also provided with an annular groove. The end cap mates with the annular groove and encapsulates the green fluorescent ceramic between the sliding lens barrel and the end cap. The other end of the sliding lens barrel is slidably disposed inside the lens barrel, and the outer wall of the sliding lens barrel is provided with a rack, which meshes with a gear rotatably disposed on the lens barrel.

[0010] Furthermore, the end cap is provided with low-refractive-index optical glass corresponding to the green fluorescent ceramic, and the outer side of the end cap is provided with external threads. The external threads cooperate with the internal threads provided on the wall of the annular groove to realize the threaded connection between the end cap and the sliding lens.

[0011] Furthermore, one end of the lens barrel is provided with a sliding groove that cooperates with the sliding lens. The groove wall is provided with a limiting groove that cooperates with the rack. The bottom of the limiting groove is provided with a through hole. A rotating shaft is provided in the through hole. A gear is set in the through hole and rotatably connected to the rotating shaft. The other end of the lens barrel is provided with a groove. A Fresnel lens is set in the groove and encapsulated in the lens barrel through a laser light source assembly.

[0012] Furthermore, the laser source assembly includes a source base, in which a laser source element corresponding to the thickness of the green fluorescent ceramic is installed. The upper part of the source base is provided with a clamping ring for clamping the Fresnel lens, and the source base is detachably connected to the lens barrel.

[0013] Furthermore, the laser source is a single LD laser diode or an LD laser diode module. The heat dissipation assembly includes several heat dissipation fins corresponding to a single LD, and the heat dissipation fins are fixed to the outer wall of the lens barrel.

[0014] Furthermore, the heat dissipation assembly includes several gravity heat pipes and several heat dissipation fins. The gravity heat pipes are U-shaped tubes, with the heat dissipation end of the gravity heat pipe connected to the light source base and extending into the lens barrel, and the condensation end of the gravity heat pipe connected to the heat dissipation fins.

[0015] A packaging and usage method for a high-quality remote-excited fluorescent ceramic green LD includes a high-quality remote-excited fluorescent ceramic green LD device, and further includes the following steps: S1: Parameter selection: The thickness of the green fluorescent ceramic is a (a=0.2mm~0.5mm), a laser source with corresponding power is selected according to the thickness of the green fluorescent ceramic, and the distance between the green fluorescent ceramic and the laser source is determined to be b (b=20mm~50mm), and the number of gravity heat pipes is selected as n (n=0~4) and the number of heat dissipation fins is selected as m (m=6~12) according to the power of the laser source; wherein, as the thickness of the green fluorescent ceramic increases, the power of the selected laser source increases, and thus the number of gravity heat pipes and heat dissipation fins increases;

[0016] S2: After coating the edge of the green fluorescent ceramic with thickness a selected in step S1 with thermally conductive resin, install it in the mounting groove of the mounting ring on the upper part of the sliding lens barrel, and fix the green fluorescent ceramic in the sliding lens barrel with the end cap to complete the installation of the sliding lens and obtain the first assembly component.

[0017] S3: Apply thermal grease and die bond adhesive to the laser light source selected in step S1, fix the laser light source inside the light source base, and make the pins of the laser light source extend out of the light source base to complete the installation of the laser light source assembly.

[0018] S4: Apply thermal grease to the edge of the Fresnel lens and install it in the mounting groove at the bottom of the lens barrel. Use the laser source assembly obtained in step S3 to press against the Fresnel lens inside the lens barrel. Then install m heat dissipation fins on the outer wall of the lens barrel. Install the evaporation ends of n gravity heat pipes on the light source base and inside the lens barrel, and install the condensation ends of the gravity heat pipes on the heat dissipation fins to complete the installation of the lens barrel and obtain the second assembly component.

[0019] S5: Install the first assembly component obtained in step S2 into the slide groove on the upper part of the lens barrel of the second assembly component obtained in S4. At this time, the rack on the sliding lens barrel is engaged in the limiting groove and meshes with the gear rotated on the lens barrel. Rotate the gear to adjust the distance between the fluorescent ceramic and the laser source component to b, complete the encapsulation, and obtain a complete high-quality remote excitation fluorescent ceramic type green light LD device.

[0020] S6: The pins of the laser light source are connected to the power supply. The high-quality remote-excited fluorescent ceramic green LD device obtained in step S5 enters the working state. The laser light source emits blue light, which is irradiated by the Fresnel lens and emitted through the optical glass on the end cover. At this time, the maximum temperature of the high-quality remote-excited fluorescent ceramic green LD device is below 110°C, and the laser light source can emit light continuously and stably.

[0021] The beneficial effects of this invention are as follows: This invention employs a packaging method combining an end cap, a sliding lens barrel, and low-refractive-index optical glass, solving the problem of low transmittance in fluorescent ceramics. By adjusting the distance between the sliding lens and the excitation light source using gears, the hue and color temperature of the green LD can be flexibly switched. When the distance between the sliding lens and the excitation light source is greater, the emitted light has a cool hue; when the distance is less, the emitted light has a warm hue.

[0022] This invention uses the chemical formula: y MgO- x TiO2- w (Y 1-z Ce z )3Sc 2.5 Al 2.5 O 12 Green fluorescent ceramics, used as luminescent materials, achieve high thermal conductivity while maintaining properties such as luminescence uniformity and light absorption rate by adjusting the doping ratio between TiO2 and MgO. From a microscopic control perspective, this enhances the thermal stability and luminescence intensity of the green luminescent material, thereby further improving the performance of green LEDs.

[0023] This invention employs a heat dissipation device with a U-shaped gravity heat pipe interspersed with heat dissipation fins, which can effectively solve the heat dissipation problem of the excitation light source and fluorescent ceramic, and greatly improve the service stability of the green LD under high-power continuous operation.

[0024] This invention designs a multi-fixed light source base, which can be paired with a single LD laser diode or an LD laser diode module and connected to the lens barrel by screws. This solves the problem of adjusting and assembling the excitation light source power. The structure is simple and easy to install, and it is suitable for remote excitation of fluorescent ceramic green LD devices. Attached Figure Description

[0025] To more clearly illustrate the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is an exploded view of the present invention;

[0027] Figure 2 This is a schematic diagram of the end cap structure;

[0028] Figure 3 This is a schematic diagram of the sliding lens tube structure;

[0029] Figure 4 This is a schematic diagram of the microscope tube structure;

[0030] Figure 5 This is a schematic diagram of the bottom of the microscope tube;

[0031] Figure 6 This is a schematic diagram of the light source base.

[0032] Figure 7 This is a schematic diagram of the structure of a laser source component;

[0033] Figure 8 This is a schematic diagram of the heat dissipation fins.

[0034] In the diagram: 1. Green fluorescent ceramic, 2. End cap, 201. Low refractive index optical glass, 202. Threaded wire, 3. Sliding lens barrel, 301. Mounting groove, 302. Annular groove, 303. Rack, 304. Mounting ring, 4. Gravity heat pipe, 5. Laser light source, 6. Lens barrel, 601. Slide groove, 602. Groove, 603. Heat dissipation through hole, 604. Rotating shaft, 605. Short threaded hole, 606. Limiting groove, 7. Fresnel lens, 8. Heat dissipation fins, 801. Positioning round hole, 802. Fixing round hole, 9. Light source base, 901. Rectangular column, 902. Angular column, 903. Small round hole, 904. Large round hole, 905. Heat dissipation round hole, 906. Single LD card slot, 907. Through threaded hole, 908. Positioning groove, 10. Gear, 11. Screw. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figure 1 As shown in Embodiment 1, a high-quality remote-excited fluorescent ceramic green light LD device includes a laser source assembly, a lens barrel 6, a green fluorescent ceramic 1, and a Fresnel lens 7. One end of the lens barrel 6 is connected to a sliding lens that slides axially, and the green fluorescent ceramic 1 is installed inside the sliding lens. The other end of the lens barrel 6 is fitted with the Fresnel lens 7 and fixed inside the lens barrel 6 by the laser source assembly. The laser source assembly and the lens barrel 6 are detachably connected. A heat dissipation assembly that cooperates with the laser source assembly is provided on the outside of the lens barrel 6. The light emitted from the laser source assembly enters the lens barrel 6, passes through the Fresnel lens 7 and the green fluorescent ceramic 1, and finally exits through the sliding lens. The heat emitted by the laser source assembly is directly dissipated through the heat dissipation assembly. The heat generated by the green fluorescent ceramic 1 during operation is transferred to the lens barrel 6 through the sliding lens and then dissipated by the heat dissipation assembly on the lens barrel 6. The light convergence of the excitation source is improved after passing through the Fresnel lens 7, enabling the light emitted from the laser source assembly to continuously and stably emit green light through the green fluorescent ceramic 1. This effectively solves the heat dissipation problem of the excitation source and the fluorescent ceramic, greatly improving the service stability of the green light LD under high-power continuous operation.

[0037] In this embodiment, the chemical formula of the green fluorescent ceramic 1 is: y MgO- x TiO2- w (Y 1-z Ce z )3Sc 2.5 Al 2.5 O 12 Where x is the amount of TiO2 added and y is the amount of MgO added. w For (Y) 1-z Ce z )3Sc 2.5 Al 2.5 O 12 The amount added, z is the Ce doping amount, 0.2≤ y ≤0.4, 0.1≤ x ≤0.2, 0.02≤ z ≤0.04, and w =1- x - yThe green fluorescent ceramic 1 has an absorption peak of 440nm~460nm and an emission peak of 500nm~530nm, and its thickness is 0.2mm~0.5mm. This invention employs... y MgO- x TiO2- w (Y 1-z Ce z )3Sc 2.5 Al 2.5 O 12 The green fluorescent ceramic 1 is used as the luminescent material. By adjusting the doping ratio between TiO2 and MgO, preferably, the TiO2 addition amount x ranges from 0.1 to 0.15, the MgO addition amount y ranges from 0.2 to 0.3, and the Ce doping amount z ranges from 0.02 to 0.03. Green fluorescent ceramics with the above addition ratios can achieve high thermal conductivity while maintaining properties such as luminescence uniformity and light absorption. From a microscopic control perspective, this enhances the thermal stability and luminescence intensity of the green luminescent material, thereby further improving the performance of the green LD.

[0038] like Figure 1 and Figure 3 As shown in Embodiment 2, in a high-quality remote-excited fluorescent ceramic green LD device, the sliding lens includes a sliding lens barrel 3 and an end cap 2. One end of the sliding lens barrel 3 is provided with a mounting ring 304. The outer diameter of the mounting ring 304 is larger than the outer diameter of the sliding lens barrel 3, which can prevent the sliding lens barrel 3 from sliding into the lens barrel 6 during sliding. The mounting ring 304 is provided with a mounting groove 301 that mates with the fluorescent ceramic. The mounting groove 301 is provided on the inner wall of the sliding lens barrel 3. The mounting ring 304 is also provided with an annular groove 302. The opening of the annular groove 302 faces upward, which facilitates the mating of the end cap 2 with the annular groove 302. The end cap 2 and the annular groove 302 mate and encapsulate the green fluorescent ceramic 1 between the sliding lens barrel 3 and the end cap 2. The other end of the sliding lens barrel 3 is slidably disposed in the lens barrel 6, and the outer wall of the sliding lens barrel 3 is provided with a rack 303. The rack 303 meshes with a gear 10 rotatably disposed on the lens barrel 6. The gear 10 and rack 303 engage and lock together to fix the sliding lens barrel 3 and lens barrel 6 in a fixed position, thereby controlling the distance between the green fluorescent ceramic 1 and the laser light source assembly. The rack 303 is preferably designed as an integral part of the sliding lens barrel 3, and a scale is provided on the outer wall of the sliding lens barrel 3 on the side close to the rack 303 for easy observation and adjustment of the distance.

[0039] like Figure 2As shown, the end cap 2 has a low-refractive-index optical glass 201 corresponding to the green fluorescent ceramic 1 at its end. The outer side of the end cap 2 has an external thread, which engages with the internal thread on the wall of the annular groove 302 to achieve a threaded connection between the end cap 2 and the sliding lens. The thread length of the external thread 202 is 1~3cm, which facilitates the connection between the end cap 2 and the mounting ring 304 on the sliding lens barrel 3. The outer diameter of the end cap 2 is the same as the outer diameter of the mounting ring 304, making the fit between the end cap 2 and the sliding lens barrel 3 more neat.

[0040] All other structures are the same as in Implementation 1.

[0041] like Figure 1 , Figure 4 and Figure 5 As shown in Embodiment 3, a high-quality remote-excited fluorescent ceramic green light LD device has a slide groove 601 at one end of the lens barrel 6, which mates with a sliding lens. A limiting groove 606, which mates with a rack 303, is provided on the wall of the slide groove 601. A through hole is provided at the bottom of the limiting groove 606, and a rotating shaft is located within the through hole. The rotating shaft is fixedly connected to the wall of the through hole. A gear 10 is disposed within the through hole and rotatably connected to the rotating shaft; the gear rotates relative to the rotating shaft. One side of the gear 10, located within the through hole of the lens barrel 6, extends out of the outer wall of the barrel, and the other side extends into the limiting groove 606, mates with the rack 303 slidably disposed within the limiting groove 606. Rotating the gear 10 from the outer wall of the lens barrel 6 causes the rack 303 to move up and down along the limiting groove 606, thereby causing the sliding lens barrel 3 to move up and down along the slide groove 601 within the lens barrel 6. A groove 602 is provided at the other end of the lens barrel 6, and a Fresnel lens 7 is disposed within the groove 602 and encapsulated within the lens barrel 6 by a laser light source assembly. This invention employs a packaging method using an end cap 2, a sliding lens barrel 3, and low-refractive-index optical glass 201 to solve the problem of low transmittance in fluorescent ceramics. The hue and color temperature of the green LD can be flexibly switched by adjusting the distance between the sliding lens and the excitation light source via gear 10. When the distance between the sliding lens and the excitation light source is greater, the emitted light has a cool hue; when the distance is less, the emitted light has a warm hue. There is a specific relationship between the distance between the light source and the green fluorescent ceramic 1. Besides adjusting the color temperature and hue, this distance can also be used to control the surface operating temperature of the fluorescent ceramic. When there is no need for color temperature and hue adjustment, the sliding lens can be adjusted appropriately according to the power of the excitation light source, effectively reducing the surface operating temperature of the fluorescent ceramic and simultaneously reducing the size of the device.

[0042] like Figure 1 , Figure 6 and Figure 7As shown, the laser source assembly includes a source base 9, a positioning groove 908 is provided in the source base 9, the positioning groove 908 is a stepped groove, a laser source component 5 corresponding to the thickness of the green fluorescent ceramic 1 is installed in the positioning groove 908, the source base 9 is detachably connected to the lens barrel 6 and the upper part of the source base 9 is pressed against the Fresnel lens 7. The light source base 9 has intersecting, circumferentially distributed heat dissipation holes 905 and through threaded holes 907. The heat dissipation holes 905 communicate with the heat dissipation through holes 603 on the lens barrel 6. The heat dissipation holes 905 and 603 work together to assist in heat dissipation of the laser light source 5 and the green fluorescent ceramic 1. The through threaded holes 907 correspond to the short threaded holes 605 on the lens barrel 6. Screws 11 pass through the through threaded holes 907 and 605 to achieve a detachable connection between the light source base 9 and the lens barrel 6. The laser light source 5 is a single LD laser diode or an LD laser diode module. The lower slot in the stepped groove corresponds to a single LD laser diode, with the pins of the single LD laser diode extending downwards from the light source base 9. The upper slot in the stepped groove corresponds to an LD laser diode module, with the pins of the LD laser diode module extending downwards from the light source base 9 for easy power connection. The single LD laser diode or the LD laser diode module is selected and installed according to the thickness of the green fluorescent ceramic 1. The thickness of the green fluorescent ceramic 1 is related to the power of the LD laser diode, which is related to the selection of the LD laser diode light source. The thickness of the green fluorescent ceramic 1 increases with the increase of the LD laser diode power, in order to prevent the fluorescent ceramic from being too thin and cracking during the continuous excitation process of the high-power LD laser diode. The selection of the fluorescent ceramic thickness range of 20mm to 50mm is...

[0043] All other structures are the same as in Implementation 2.

[0044] Example 4: A high-quality remote-excited fluorescent ceramic green LD device. The heat dissipation assembly includes several heat dissipation fins 8 corresponding to a single LD laser diode, which are fixed to the outer wall of the mirror barrel 6. Alternatively, the heat dissipation assembly includes several gravity heat pipes 4 and several heat dissipation fins 8. The gravity heat pipes 4 are U-shaped tubes, with their heat dissipation ends connected to the light source base 9 and extending into the mirror barrel 6. The condensation ends of the gravity heat pipes 4 are connected to the heat dissipation fins 8, which are located on the outer side of the mirror barrel 6. The heat dissipation fins 8 are rectangular fins, with fixing holes 802 inside the fins that mate with the mirror barrel 6. The number of gravity heat pipes 4 and heat dissipation fins 8 increases with the power of the LD laser diode. The heat dissipation ends of the gravity heat pipes 4 pass through the heat dissipation holes 905 and 603, while the evaporation ends of the gravity heat pipes 4 pass sequentially through the positioning holes 801 on multiple heat dissipation fins 8. As the power of the excitation light source increases, the amount of waste heat generated also increases accordingly. If the waste heat cannot be dissipated in time, it will seriously affect the service stability and optical quality of the green LD laser diode. In order to improve the heat dissipation rate of the device, it is essential to increase the number of fins and gravity heat pipes 4 accordingly. Among them, the number of gravity heat pipes 4 is preferably set to 0, 2, and 4 to facilitate the symmetrical distribution of heat pipes and ensure the uniformity of heat dissipation of the device.

[0045] All other structures are the same as in Implementation 3.

[0046] Example 5: A packaging and usage method for a high-quality remote-excited fluorescent ceramic green LD device, comprising the following steps: S1: Parameter selection: The thickness of the green fluorescent ceramic 1 is a (a=0.2mm~0.5mm), a laser source element 5 with corresponding power is selected according to the thickness of the green fluorescent ceramic 1, and the distance between the green fluorescent ceramic 1 and the laser source element 5 is determined to be b (b=20mm~50mm), and the number of gravity heat pipes 4 is selected as n (n=0~4) and the number of heat dissipation fins 8 is selected as m (m=6~12) according to the power of the laser source element 5; wherein, as the thickness of the green fluorescent ceramic 1 increases, the power of the selected laser source element 5 increases, and thus the number of selected gravity heat pipes 4 and heat dissipation fins 8 increases;

[0047] S2: After coating the edge of the green fluorescent ceramic 1 with a thickness of a selected in step S1 with thermally conductive resin, install it in the mounting groove 301 of the mounting ring 304 on the upper part of the sliding lens barrel 3, and fix the green fluorescent ceramic 1 in the sliding lens barrel 3 through the end cap 2 to complete the installation of the sliding lens.

[0048] S3: Apply thermal grease and die bond adhesive to the laser light source component 5 selected in step S1, fix the laser light source component 5 inside the light source base 9, and make the pins of the laser light source component 5 extend out of the light source base 9 to complete the installation of the laser light source assembly and obtain the first assembled component.

[0049] S4: Apply thermal grease to the edge of Fresnel lens 7 and install it in the mounting groove 908301 at the bottom of the lens barrel 6. Use the laser source assembly obtained in step S3 to press against Fresnel lens 7 inside the lens barrel 6. Then install m heat dissipation fins 8 on the outer wall of the lens barrel 6. Install the evaporation ends of n gravity heat pipes 4 inside the light source base 9 and the lens barrel 6, and install the condensation ends of the gravity heat pipes 4 on the heat dissipation fins 8 to complete the installation of the lens barrel 6 and obtain the second assembly component.

[0050] S5: Install the first assembly component obtained in step S2 into the slide groove 601 on the upper part of the lens barrel 6 of the second assembly component obtained in S4. At this time, the rack 303 on the sliding lens barrel 3 is engaged in the limiting groove 606 and meshes with the gear 10 rotatably set on the lens barrel 6. Rotate the gear 10 to adjust the distance between the fluorescent ceramic and the laser light source 5 to b, and complete the encapsulation.

[0051] S6: The pins of the laser light source 5 are connected to the power supply. The high-quality remote-excited fluorescent ceramic green LD device obtained in step S5 enters the working state. The laser light source 5 emits blue light. The blue light is irradiated by the Fresnel lens 7 and emitted through the optical glass on the end cover 2. At this time, the maximum temperature of the high-quality remote-excited fluorescent ceramic green LD device is within 110°C, and the laser light source 5 can emit light continuously and stably.

[0052] All other structures are the same as in Implementation 4.

[0053] Example 6, as Figure 1As shown, a high-quality remote-excited fluorescent ceramic green LD device includes a lens barrel 6, a sliding lens, a heat dissipation device, and an excitation light source. A Fresnel lens 7 is located at the lower end of the lens barrel 6, and a gear 10 is located on the surface of the lens barrel 6. The sliding lens is positioned inside the lens barrel 6 and contacts the gear 5. The excitation light source is located at the lower end of the lens barrel 6 and contacts the Fresnel lens 7. The heat dissipation device passes through the excitation light source and the lens barrel 6 and is located on the surface of the lens barrel 6. The sliding lens barrel 3 and the lens barrel 6 are connected by a slide groove 601. By adjusting the gear 10, the distance between the lens and the light source can be controlled, flexibly adjusting the luminous performance of the green light source and reducing the surface operating temperature of the green fluorescent ceramic 1. The inner wall of the mounting ring of the lens barrel 6 is coated with a high-reflectivity material to avoid luminous flux loss during light conversion. The excitation light source is connected to the lens barrel 6 by screws 11, which facilitates disassembly and replacement, allowing for easy replacement of individual LD ​​laser diodes and LD laser diode modules, and also securing the Fresnel lens 7. In the heat dissipation device, rectangular fins are set on the lower surface of the lens barrel 6 through fixed circular holes. The evaporation end of the U-shaped gravity heat pipe 4 is set in the heat dissipation through hole 603 and heat dissipation circular hole 905 of the lens barrel 6 and the excitation light source. The condensation end is set in the positioning circular hole 801 of the rectangular fins. This can effectively solve the heat dissipation problem at the excitation light source and significantly improve the service stability of the green LD laser diode under high power continuous operation.

[0054] In this example, the sliding lens includes an end cap 2 and a sliding lens barrel 3. The green fluorescent ceramic 1 is located between the end cap 2 and the sliding lens barrel 3. The end cap is encapsulated with a low refractive index optical ceramic 201 to improve the light transmittance of the fluorescent ceramic 1. The lower end is provided with a threaded wire 202 with a length of 1~3cm to facilitate the connection between the end cap 2 and the sliding lens 3.

[0055] In this example, the upper end of the lens barrel 6 has a sliding groove 601, and the sliding lens barrel 3 is disposed within the sliding groove 601. The lower end of the lens barrel 6 has a groove 602, and the Fresnel lens 7 is disposed within the groove 602. The surface of the lens barrel 6 has a circular shaft 603, and the gear 10 is disposed coaxially with the circular shaft 603. The circumference of the lens barrel has a through hole 604, and the evaporation end of the U-shaped gravity heat pipe 4 is disposed within the heat dissipation through hole 604. The sliding lens slides parallel within the sliding groove 601, with a sliding range of 0mm to 30mm. There are four heat dissipation through holes 604, evenly distributed around the circumference of the lens barrel 6, ensuring uniform heat dissipation. The Fresnel lens 7 is located at the lower end of the lens barrel 6, and the light convergence is improved after the excitation light source passes through the Fresnel lens 7.

[0056] In this embodiment, the light source base 9 has a rectangular post 901, a angular post 902, and a single LD laser diode slot 906 inside, for fixing a single LD laser diode or an LD laser diode module, respectively. The lower surface of the light source base 9 has two small circular holes 903 and two large circular holes 904 for placing the pins of a single LD laser diode or an LD laser diode module. The upper end of the light source base 9 has four heat dissipation circular holes 904, and the evaporation end of the U-shaped gravity heat pipe 4 is located in the lower heat dissipation circular hole 904. The lower end of the interior of the light source base 9 has a mounting base for an LD laser diode module 8 and a mounting base for a single LD laser diode. A thermally conductive resin is coated between the substrate of the LD laser diode and the light source base 9 to improve the thermal conductivity between them.

[0057] In this embodiment, the heat dissipation device includes 0 to 4 U-shaped gravity heat pipes 4 and 6 to 12 rectangular fins. Depending on the power of the excitation light source, the number of U-shaped gravity heat pipes is preferably 0, 2, or 4, and they are symmetrically distributed in the heat dissipation through holes 603 and heat dissipation circular holes 905 to ensure the heat dissipation uniformity of the green LD laser diode.

[0058] In this embodiment, the emission peak of a single LD laser diode or LD laser diode module is in the wavelength range of 445nm~455nm. The power of a single LD laser diode is 5W, and the power of the LD laser diode module is 10W~50W. The green fluorescent ceramic 1 has the following chemical formula: y MgO- x TiO2- w (Y 1-z Ce z )3Sc 2.5 Al 2.5 O 12 , 0.2≤ y ≤0.4, 0.1≤ x ≤0.2, 0.02≤ z ≤0.04, and w =1- x - y Where x is the amount of TiO2 added and y is the amount of MgO added. w For (Y) 1-z Ce z )3Sc 2.5 Al 2.5 O 12The amount of Ce added, z, represents the Ce doping amount. The absorption peak is in the range of 440nm~460nm, the emission peak is in the range of 500nm~530nm, and the thickness is 0.2mm~0.5mm. By adjusting the doping ratio between TiO2 and MgO, the fluorescent ceramic possesses high thermal conductivity while maintaining properties such as luminescence uniformity and light absorption rate. From a microscopic control perspective, the thermal stability and luminescence intensity of the green light-emitting material are enhanced, thereby further improving the performance of the green LD laser diode. The distance between a single LD laser diode or LD laser diode module and the green fluorescent ceramic 1 ranges from 20mm to 50mm, ensuring sufficient distance so that the fluorescent ceramic can maintain a stable surface operating temperature under excitation.

[0059] The specific encapsulation process is as follows: A suitable power LD laser diode is selected and placed on the light source base 9. A Fresnel lens 7, with its convex surface facing upwards, is placed into the groove 602 of the lens barrel 6. The light source base 9 is fixed to the lower end of the lens barrel 6 with screws 11, abutting against the lower surface of the Fresnel lens 7. Then, based on the excitation light source power, an appropriate number of U-shaped gravity heat pipes 4 and rectangular fins are selected. The fixing holes 802 of the rectangular fins pass through the lens barrel 6 and are evenly spaced on its lower surface. The evaporation end of the U-shaped gravity heat pipe 4 passes through the heat dissipation through-hole 603 and heat dissipation hole 905, and the condensation end passes through the positioning hole 801. The cut circular green fluorescent ceramic is placed in the mounting groove 301 of the sliding lens barrel 3 and fixed with the end cap 2. The rack 303 is engaged with the gear 10 and then placed into the slide groove 601, completing the encapsulation.

[0060] Example 7: A high-quality 5W remote-excited fluorescent ceramic green LD device, comprising the following parameters, packaging, and usage steps:

[0061] Parameters: Green fluorescent ceramic selection y MgO- x TiO2- w (Y 1-z Ce z )3Sc 2.5 Al 2.5 O 12 The thickness is 2mm (i.e., a=2mm), and the radius is 15mm; the laser source is a single LD laser diode with an emission peak of 450nm and a power of 5W.

[0062] The spatial distance between the Fresnel lens and the single LD laser diode is 10mm, the spatial distance between the green fluorescent ceramic and the single LD laser diode is 20mm (i.e., b=20mm), there are 0 U-shaped gravity heat pipes (i.e., n=0), and there are 6 rectangular fins (i.e., m=6).

[0063] Step S1: y MgO-x TiO2- w (Y 1-z Ce z )3Sc 2.5 Al 2.5 O 12 The green fluorescent ceramic was cut to match the mounting groove 301 at the upper end of the sliding lens barrel 3. y MgO- x TiO2- w (Y 1-z Ce z )3Sc 2.5 Al 2.5 O 12 After coating the edges of the ceramic with thermally conductive resin, it is installed in the mounting groove 301. The end cap 2 is installed on the upper end of the sliding mirror tube 3 and connected by threads. The device obtained after step S1 is named A. A satisfies the requirement of individual heat dissipation for the fluorescent ceramic.

[0064] Step S2: Apply thermally conductive silicone grease to the substrate of a single LD laser diode and die-attach adhesive to the mounting area. Place the single LD laser diode inside the light source base within the corresponding LD laser diode slot 906, with the LD laser diode pins passing through the corresponding small circular holes 903. The device obtained after step S2 is named B. B completes the individual heat dissipation for a single LD laser diode.

[0065] Step S3: Mount gear 10 on the circular shaft 604 on the surface of the lens barrel 6. Coat the inside of the mounting ring of the lens barrel 6 with a high-reflectivity material, apply thermal grease to the edge of the Fresnel lens 7 to contact the inner wall of the lens barrel 6, and set rectangular fins on the lower surface of the lens barrel. The device obtained after step S3 is named C.

[0066] Step S4: Connect device A obtained in step S1 to device C obtained in step S3, with gear 10 and rack 303 meshing between them. Connect device B obtained in step S2 to device C obtained in step S3 using screws 11 to complete the encapsulation of this device.

[0067] Step S5: After the power is turned on, the device obtained in step S4 enters the normal working state. The single LD laser diode emits blue light and remotely excites the fluorescent ceramic to emit green light. The maximum temperature of the entire system is controlled within 110°C, which enables the fluorescent ceramic to emit light continuously and stably under the excitation of a single LD laser diode with a power of 5W.

[0068] All other structures are the same as in implementation 6.

[0069] Example 8: A high-quality 30W remote-excited fluorescent ceramic green LD device, comprising the following parameters, packaging, and usage steps:

[0070] Parameters: Green fluorescent ceramic selection y MgO- x TiO2- w (Y 1-z Ce z )3Sc 2.5 Al 2.5 O 12 The thickness is 3mm (i.e., a=3mm) and the radius is 15mm; the laser source is an LD laser diode module with an emission peak of 450nm and a power of 30W.

[0071] The spatial distance between the Fresnel lens and the LD laser diode module is 10mm, the spatial distance between the green fluorescent ceramic and a single LD laser diode is 30mm (i.e., b=30mm), there are 2 U-shaped gravity heat pipes (i.e., n=2), and there are 6 rectangular fins (i.e., m=6).

[0072] Step S1: y MgO- x TiO2- w (Y 1-z Ce z )3Sc 2.5 Al 2.5 O 12 The green fluorescent ceramic was cut to match the mounting groove 301 at the upper end of the sliding lens barrel 3. y MgO- x TiO2- w (Y 1-z Ce z )3Sc 2.5 Al 2.5 O 12 After coating the edges of the ceramic with thermally conductive resin, it is installed in the mounting groove 301. The end cap 2 is installed on the upper end of the sliding mirror tube 3 and connected by threads. The device obtained after step S1 is named D. D satisfies the function of individual heat dissipation for the fluorescent ceramic.

[0073] Step S2: Apply thermal grease to the substrate of the LD laser diode module and die-bonding adhesive to the bayonet joint. Place the LD laser diode module in the corresponding slot inside the light source base 9, with the LD laser diode pins passing through the corresponding large circular hole 904. After step S2, the resulting device is named E. E completes the individual heat dissipation of the LD laser diode module.

[0074] Step S3: Mount gear 10 on the circular shaft 604 on the surface of the lens barrel 6. Coat the inside of the mounting ring of the lens barrel 6 with a high-reflectivity material, apply thermal grease to the edge of the Fresnel lens 7 to contact the inner wall of the lens barrel 6, and set rectangular fins on the lower surface of the lens barrel. The device obtained after step S3 is named F.

[0075] Step S4: Connect device D obtained in step S1 to device F obtained in step S3, with gear 10 and rack 303 meshing between them. Then, adjust the spatial distance between the fluorescent ceramic 1 and the LD laser diode module 501 to 30mm using gear 10. Connect device E obtained in step S2 to device F obtained in step S3 using screws 10, and symmetrically insert two U-shaped gravity heat pipes 4 into device E to complete the encapsulation of this device.

[0076] Step S5: After the power is turned on, the device obtained in step S4 enters the normal working state. The LD laser diode module emits blue light and remotely excites the fluorescent ceramic to emit green light. The maximum temperature of the entire system is controlled within 110°C, which enables the fluorescent ceramic to emit light continuously and stably under the excitation of the LD laser diode module with a power of 30W, realizing the application of fluorescent ceramic.

[0077] All other structures are the same as in implementation 7.

[0078] Example 9: A high-quality 50W remote-excited fluorescent ceramic green LD device includes the following parameters, packaging, and usage steps:

[0079] Parameters: Green fluorescent ceramic selection y MgO- x TiO2- w (Y 1-z Ce z )3Sc 2.5 Al 2.5 O 12 The thickness is 5mm (i.e., a=5mm) and the radius is 15mm; the laser source is an LD laser diode module with an emission peak of 450nm and a power of 50W.

[0080] The spatial distance between the Fresnel lens and the LD laser diode module is 10mm, the spatial distance between the green fluorescent ceramic and the single LD laser diode is 50mm (i.e., b=50mm), there are 4 U-shaped gravity heat pipes (i.e., n=4), and there are 12 rectangular fins (i.e., m=12).

[0081] Step S1: y MgO- x TiO2- w (Y 1-z Ce z )3Sc 2.5 Al 2.5 O 12 The fluorescent ceramic is cut to match the mounting groove 301 at the upper end of the sliding lens barrel 3. y MgO- x TiO2-w (Y 1-z Ce z )3Sc 2.5 Al 2.5 O 12 After coating the edges of the ceramic with thermally conductive resin, it is installed in the mounting groove 301. The end cap 2 is installed on the upper end of the sliding mirror tube 3 and connected by threads. The device obtained after step S1 is named G. G provides individual heat dissipation for the fluorescent ceramic.

[0082] Step S2: Apply thermal grease to the substrate of the LD laser diode module and die-bonding adhesive to the bayonet joint. Place the LD laser diode module 501 into the corresponding slot inside the light source base 9, with the LD laser diode pins passing through the corresponding large circular holes 904. After step S2, the device is named H. H completes the individual heat dissipation of the LD laser diode module.

[0083] Step S3: Mount gear 10 on the circular shaft 604 on the surface of the lens barrel 6. Coat the inner mounting ring of the lens barrel 6 with a high-reflectivity material, apply thermal grease to the edge of the Fresnel lens 7 to contact the inner wall of the lens barrel 6, and set rectangular fins on the lower surface of the lens barrel 6. The device obtained after step S3 is named M.

[0084] Step S4: Connect the device G obtained in step S1 to the device M obtained in step S3, with the gear 10 and rack 303 meshing between them. Then, adjust the spatial distance between the fluorescent ceramic 1 and the LD laser diode module 8 to 50mm using the gear 10. Connect the device H obtained in step S2 to the device M obtained in step S3 using screws 11, and insert four U-shaped gravity heat pipes 4 into the device M to complete the encapsulation of this device.

[0085] Step S5: After the power is turned on, the device obtained in step S4 enters the normal working state. The LD laser diode module emits blue light and remotely excites the fluorescent ceramic to emit green light. The maximum temperature of the entire system is controlled within 110°C, which enables the fluorescent ceramic to emit light continuously and stably under the excitation of the LD laser diode module with a power of 50W, realizing the application of fluorescent ceramic.

[0086] All other structures are the same as in implementation 8.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-quality remote excitation fluorescent ceramic green light LD device, characterized in that: The application relates to a laser light source assembly, a lens barrel (6), a green light fluorescent ceramic (1) and a Fresnel lens (7), one end of the lens barrel (6) is connected with a sliding lens which slides along an axial direction, the green light fluorescent ceramic (1) is installed in the sliding lens; the other end of the lens barrel (6) is installed with the Fresnel lens (7) and is fixed in the lens barrel (6) through the laser light source assembly, the laser light source assembly is detachably connected with the lens barrel (6), and a heat dissipation assembly which cooperates with the laser light source assembly is arranged on the outer side of the lens barrel (6). The chemical formula of the green light fluorescent ceramic (1) is yMgO-xTiO2-w (Y1-zCez)3Sc 2.5 Al 2.5 O 12 , wherein x is the TiO2 addition amount, y is the MgO addition amount, w is (Y1-zCez)3Sc 2.5 Al 2.5 O 12 addition amount, z is the Ce doping amount, 0.2≤y≤0.4, 0.1≤x≤0.2, 0.02≤z≤0.04, and w=1-x-y, the green light fluorescent ceramic (1) has an absorption peak of 440nm-460nm and an emission peak of 500nm-530nm, and the thickness of the green light fluorescent ceramic (1) is 0.2mm-0.5mm.

2. The high-quality remote excitation fluorescent ceramic green light LD device of claim 1, wherein: The sliding lens comprises a sliding lens barrel (3) and an end cover (2), one end of the sliding lens barrel (3) is provided with a mounting ring (304), the mounting ring (304) is internally provided with a mounting groove (301) which cooperates with the green light fluorescent ceramic (1), the mounting ring (304) is further provided with an annular groove (302), the end cover (2) cooperates with the annular groove (302) and encapsulates the green light fluorescent ceramic (1) between the sliding lens barrel (3) and the end cover (2); the other end of the sliding lens barrel (3) is slidably arranged in the lens barrel (6), and a gear rack (303) is arranged on the outer wall of the sliding lens barrel (3) and meshes with a gear (10) which is rotatably arranged on the lens barrel (6).

3. The high-quality remote-excited fluorescent ceramic green light LD device according to claim 2, characterized in that: The end cover (2) is provided with low-refractive optical glass (201) corresponding to the green light fluorescent ceramic (1) at the end, the outer side of the end cover (2) is provided with external threads (202), the external threads (202) are matched with internal threads arranged on the groove wall of the annular groove (302) to realize the threaded connection of the end cover (2) and the sliding lens barrel (3).

4. The high-quality remote-excited fluorescent ceramic green light LD device according to claim 3, characterized in that: One end of the lens barrel (6) is provided with a sliding groove (601) matched with the sliding lens barrel (3), the groove wall of the sliding groove (601) is provided with a limiting groove (606) matched with the gear rack (303), the groove bottom of the limiting groove (606) is provided with a through hole, a rotating shaft (604) is arranged in the through hole, the gear (10) is arranged in the through hole and is rotatably connected with the rotating shaft (604); the other end of the lens barrel (6) is provided with a recess (602), the Fresnel lens (7) is arranged in the recess (602) and is encapsulated in the lens barrel (6) through the laser light source assembly.

5. The high-quality remote-excited fluorescent ceramic green light LD device according to claim 4, characterized in that: The laser light source assembly comprises a light source base (9), the light source base (9) is internally provided with a positioning groove (908), a laser light source piece (5) corresponding to the thickness of the green light fluorescent ceramic (1) is installed in the positioning groove (908), the light source base (9) is detachably connected with the lens barrel (6) and the upper part of the light source base (9) abuts against the Fresnel lens (7).

6. The high-quality remote-excited fluorescent ceramic green light LD device according to claim 5, characterized in that: The laser light source piece (5) is a single LD laser diode or an LD laser diode module.

7. The high-quality remote-excited fluorescent ceramic green light LD device according to claim 6, characterized in that: The heat dissipation assembly comprises a plurality of heat dissipation fins (8) corresponding to the single LD laser diode, and the heat dissipation fins (8) are fixed on the outer wall of the lens barrel (6).

8. The high-quality remote-excited fluorescent ceramic green light LD device according to claim 6, characterized in that: The heat dissipation assembly comprises a plurality of gravity heat pipes (4) and a plurality of heat dissipation fins (8), the gravity heat pipes (4) are U-shaped pipes, the heat dissipation ends of the gravity heat pipes (4) are connected on the light source base (9) and extend into the lens barrel (6), the condensation ends of the gravity heat pipes (4) are connected with the heat dissipation fins (8), and the heat dissipation fins (8) are located on the outer side of the lens barrel (6).

9. A method of using a high-quality remote excitation fluorescent ceramic green light LD device, characterized in that, The high-quality remote excitation fluorescent ceramic type green light LD device as claimed in claim 8 further comprises the following steps: S1: parameter selection: the thickness of the green light fluorescent ceramic (1) is a (a=0.2mm~0.5mm), the laser light source piece (5) with corresponding power is selected according to the thickness of the green light fluorescent ceramic (1), and the distance between the green light fluorescent ceramic (1) and the laser light source piece (5) is b (b=20mm~50mm), the number of the gravity heat pipes (4) is n (n=0~4) according to the power of the laser light source piece (5), and the number of the heat dissipation fins (8) is m (m=6~12); wherein, with the increase of the thickness of the green light fluorescent ceramic (1), the power of the selected laser light source piece (5) becomes larger, and the number of the selected gravity heat pipes (4) and heat dissipation fins (8) becomes larger; S2: the green light fluorescent ceramic (1) with the thickness of a selected in step S1 is installed in the installation groove (301) of the installation ring (304) on the upper part of the sliding lens barrel (3) after being coated with heat-conducting resin on the edge thereof, and the green light fluorescent ceramic (1) is fixed in the sliding lens barrel (3) through the end cover (2), and the installation of the sliding lens is completed; S3: the laser light source piece (5) selected in step S1 is fixed in the light source base (9) after being coated with heat-conducting silicone grease and die bonding glue, and the pin of the laser light source piece (5) extends out of the light source base (9), the installation of the laser light source assembly is completed, and the first assembly part is obtained; S4: the heat dissipation silicone grease is coated on the edge of the Fresnel lens (7) and installed in the groove (602) on the lower part of the lens barrel (6), the laser light source assembly obtained in step S3 is abutted against the Fresnel lens (7) in the lens barrel (6), then m pieces of heat dissipation fins (8) are installed on the outer wall of the lens barrel (6), the evaporation end of n gravity heat pipes (4) is installed in the light source base (9) and the lens barrel (6), and the condensation end of the gravity heat pipes (4) is installed on the heat dissipation fins (8), the installation of the lens barrel (6) is completed, and the second assembly part is obtained; S5: the first assembly part obtained in step S3 is installed in the slide groove (601) on the upper part of the lens barrel (6) of the second assembly part obtained in step S4, at this time, the rack (303) on the sliding lens barrel (3) is clamped in the limiting groove (606) and engaged with the gear (10) rotatably arranged on the lens barrel (6), the distance between the fluorescent ceramic and the laser light source piece (5) is adjusted to b by rotating the gear (10), the packaging is completed, and the complete high-quality remote excitation fluorescent ceramic type green light LD device is obtained; S6: the pin of the laser light source piece (5) is connected with the power supply, the high-quality remote excitation fluorescent ceramic type green light LD device obtained in step S5 enters the working state, the laser light source piece (5) emits blue light, the blue light irradiates the green light fluorescent ceramic (1) through the Fresnel lens (7) and emits green light through the optical glass on the end cover (2), at this time, the highest temperature of the high-quality remote excitation fluorescent ceramic type green light LD device is within 110℃, and the laser light source piece (5) can continuously and stably emit light.

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