Light conversion assembly for deep-sea laser light and preparation method thereof, and deep-sea laser light

Abstract

This invention discloses a light-converting component for a deep-sea laser light and its manufacturing method, relating to the field of lighting. The light-converting component for the deep-sea laser light includes a light-transmitting element and a green functional layer. At least one groove is provided on the light-emitting surface of the light-transmitting element, and the green functional layer is disposed within the groove, filling it completely. The light-transmitting element is made of one of the following: fused silica glass, alumina transparent ceramic, sapphire, magnesium oxide transparent ceramic, calcium fluoride transparent ceramic, yttrium oxide transparent ceramic, or lutetium oxide transparent ceramic. The green functional layer is obtained by sintering a slurry containing green phosphor. Implementing this invention can improve the lighting effect of deep-sea laser lights and extend their service life.

Description

Technical Field

[0001] This invention relates to the field of lighting, and more particularly to a light-converting component for a deep-sea laser light and its manufacturing method, as well as the deep-sea laser light itself. Background Technology

[0002] Due to the uniquely dark environment of the deep sea, active illumination is essential for deep-sea exploration. Therefore, deep-sea lighting equipment is indispensable for deep-sea exploration. (Reference) Figure 1 Existing deep-sea lighting lights encapsulate the light source 200 and circuit board 400 within a pressure-resistant housing 300, with an acrylic light-transmitting element 100 on the light-emitting surface, which directly contacts the seawater environment. Current deep-sea laser lights have several problems: 1. The thermal conductivity of the acrylic light-transmitting element is only 0.2–0.5 W / (m·K), while for better illumination, general lighting sources have higher power (>1kW). This results in poor heat dissipation for deep-sea laser lights, limiting the use of excessively high-power light sources and preventing prolonged operation. 2. Acrylic glass has poor corrosion resistance to seawater, leading to a short lifespan. 3. Due to the special nature of the deep-sea environment, green LEDs are generally used as the light source. However, semiconductors have a green gap, resulting in low efficiency of green semiconductor lasers and poor lighting effects. Summary of the Invention

[0003] The technical problem to be solved by this invention is to provide a light conversion component for deep-sea laser lights, which can convert blue light into green light or blue-green light to improve the lighting effect. Furthermore, this light conversion component is corrosion-resistant and has good thermal conductivity, which can extend the service life of the deep-sea laser light.

[0004] Another technical problem to be solved by the present invention is to provide a method for preparing a light-converting component for a deep-sea laser light.

[0005] The technical problem that this invention also aims to solve is to provide a deep-sea laser light with a long service life and good lighting effect.

[0006] To address the aforementioned issues, this invention discloses a light-converting component for a deep-sea laser light, comprising a light-transmitting element and a green functional layer. The light-emitting surface of the light-transmitting element has at least one groove, and the green functional layer is disposed within the groove, filling it completely.

[0007] The light-transmitting element is made of one of the following: fused silica glass, alumina transparent ceramic, sapphire, magnesium oxide transparent ceramic, calcium fluoride transparent ceramic, yttrium oxide transparent ceramic, or lutetium oxide transparent ceramic.

[0008] The green functional layer is obtained by sintering a slurry containing green phosphor.

[0009] As an improvement to the above technical solution, a groove with an inclined bottom surface is provided on the light-emitting surface of the light-transmitting component, and the green functional layer is disposed in the groove and fills the groove.

[0010] The light-transmitting element is made of fused silica glass, transparent alumina ceramic, or sapphire.

[0011] The green phosphor is selected from β-SiAlON:Eu phosphor and / or LuAG:Ce phosphor.

[0012] As an improvement to the above technical solution, the light-transmitting element is made of fused silica glass, and the slurry comprises, by weight:

[0013] 0.1-2 parts green phosphor, 0.8-5 parts B2O3-Al2O3-ZnO-SiO2 glass powder, 4-8 parts wetting agent, and 10-30 parts dispersant;

[0014] The wetting agent is terpineol, and the dispersant is ethylene glycol and / or ethyl acetate.

[0015] As an improvement to the above technical solution, the light-transmitting element is made of alumina transparent ceramic or sapphire, and the slurry comprises, by weight:

[0016] 0.1-2 parts green fluorescent powder, 0.8-5 parts heavy flint glass powder, 4-8 parts wetting agent, and 10-30 parts dispersant;

[0017] The wetting agent is terpineol, and the dispersant is ethylene glycol and / or ethyl acetate.

[0018] As an improvement to the above technical solution, the feature is that a BPYR film is provided on the bottom surface of the groove;

[0019] The BPYR film includes a first SiO2 layer disposed on the bottom surface of the groove, a TiO2 layer and a second SiO2 layer periodically stacked on the first SiO2 layer, and a third SiO2 layer disposed on the second SiO2 layer.

[0020] The thickness of the first SiO2 layer is the same as the thickness of the third SiO2 layer, and is twice the thickness of the second SiO2 layer;

[0021] The thickness of the BPYR film is 1.5-2.5 μm.

[0022] As an improvement to the above technical solution, the thickness of the first SiO2 layer is 50-60nm, the thickness of the second SiO2 layer is 100-120nm, the thickness of the TiO2 layer is 65-75nm, and the thickness of the third SiO2 layer is 50-60nm.

[0023] As an improvement to the above technical solution, an AR film is provided on the light-incident surface of the light-transmitting component.

[0024] Accordingly, the present invention also discloses a method for preparing a light-converting component for a deep-sea laser light, comprising:

[0025] (1) Provide a light-transmitting element, wherein at least one groove is formed on the light-emitting surface of the light-transmitting element;

[0026] (2) Fill the groove with slurry;

[0027] (3) Sinter the light-transmitting part after filling with slurry;

[0028] (4) Polish the light-emitting surface of the sintered light-converting component to obtain the final product.

[0029] As an improvement to the above technical solution, in step (3), the light-transmitting part after being filled with slurry is kept at 500-800℃ for 0.2-1h.

[0030] Accordingly, the present invention also discloses a deep-sea laser light, which includes a blue semiconductor laser and the aforementioned light-converting component for a deep-sea laser light, wherein the blue semiconductor laser is movable relative to the light-converting component.

[0031] Implementing this invention has the following beneficial effects:

[0032] The light-converting component for a deep-sea laser light of the present invention includes a light-transmitting element and a green functional layer. The light-emitting surface of the light-transmitting element has at least one groove, and the green functional layer is disposed within the groove, filling it completely. Based on this configuration, blue light emitted by a blue laser can be converted into green light, thereby increasing peak brightness and improving illumination. Furthermore, the light-transmitting element is made of inorganic materials, and the green functional layer is also primarily made of inorganic phosphors, which improves the light-converting component's corrosion resistance to seawater and extends the lifespan of the deep-sea laser light. In addition, the use of an all-inorganic system also improves overall thermal conductivity and durability, allowing the deep-sea laser light to use higher-power blue lasers, further enhancing illumination. Attached Figure Description

[0033] Figure 1 This is a structural schematic diagram of a deep-sea lighting lamp in the existing technology;

[0034] Figure 2 This is a schematic diagram of the structure of a light-converting component for a deep-sea laser light in one embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of a light-converting component for a deep-sea laser light in another embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the structure of a light-converting component for a deep-sea laser light in another embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the structure of the BPYR membrane in one embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the light-converting component for a deep-sea laser light in Embodiment 2 of the present invention. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0040] refer to Figure 1 This invention provides a light-converting component for deep-sea laser lights, comprising a light-transmitting element 1 and a green functional layer 2. A groove 11 is provided on the light-emitting surface of the light-transmitting element 1, and the green functional layer 2 fills and flattens the groove 11. This green functional layer 2 can convert blue light emitted by a blue laser into blue-green or green light. By using this light-converting component, the green light source in traditional deep-sea laser lights can be replaced with a more efficient blue light source, increasing the peak brightness of the green light and thus improving the luminous efficiency of the deep-sea laser light. Furthermore, common blue light sources (such as blue semiconductor lasers) are relatively inexpensive, effectively reducing the cost of deep-sea laser lights.

[0041] The number of grooves 11 can be one or more. For details, refer to... Figure 1 In one embodiment of the present invention, the light-emitting surface of the light-transmitting element 1 is provided with a groove having a flat bottom. (See reference) Figure 2 In another embodiment of the present invention, the light-emitting surface of the light-transmitting element 1 is provided with a plurality of grooves 11 with flat bottoms, and the depths of the different grooves 11 are different, that is, the thicknesses of the green functional layer 2 in the different grooves are different. Through the arrangement of these grooves 11, different dominant wavelengths of illumination can be achieved according to the usage scenario (such as different ocean depths, different plankton species, etc.), thus broadening the usage scenarios and improving the lighting effect. Preferably, see reference... Figure 3 In another embodiment of the present invention, a groove 11 with an inclined bottom surface is provided on the light-emitting surface of the light-transmitting component 1. This groove 11 is easy to process, can form a green functional layer 2 with continuously varying thickness, thereby making the color temperature of the deep-sea laser light continuously adjustable and suitable for various underwater scenarios; and the bottom surface of this groove 11 is relatively large, making it easy to form other functional layers.

[0042] The light-transmitting element 1 can be made of one of the following materials: fused silica glass, alumina transparent ceramic, sapphire, magnesium oxide transparent ceramic, calcium fluoride transparent ceramic, yttrium oxide transparent ceramic, or lutetium oxide transparent ceramic, but is not limited to these. The green functional layer 12 is formed by sintering a paste containing green phosphor, wherein the green phosphor is an inorganic material, specifically β-SiAlON:Eu phosphor, LuAG:Ce phosphor, or Li... 4-3x Sm x (WO4)2 phosphor, UCr4C4 phosphor, CaMoO4:Ho 3+ One or more phosphors, but not limited to, are used. Sintering with a slurry containing green phosphors allows for the removal of small amounts of essential organic matter (such as dispersants and wetting agents) during the sintering process, resulting in a completely inorganic green functional layer. The slurry can be easily coated into the groove 11, simplifying the process. Based on the aforementioned light-transmitting component 1 and green functional layer 12, the entire light-converting component is made inorganic. This has several advantages: First, it enhances resistance to seawater corrosion and extends service life. Second, it improves thermal conductivity and tolerance to high-energy light, allowing the deep-sea laser light to use higher-power light sources and improving illumination. Third, the improved thermal conductivity eliminates the need for switching during use, reducing the need for multiple sets of laser lights for switching in deep-sea detectors.

[0043] Preferably, in one embodiment of the present invention, the light-transmitting element 1 is made of fused silica, alumina transparent ceramic, or sapphire. Fused silica glass has a relatively low thermal conductivity (approximately 1 W·m). -1 ·K -1 Sapphire has a high refractive index (approximately 45 W·m), but its refractive index is also relatively low (1.45). -1 ·K -1 ), transparent alumina ceramic (approximately 25 W·m) -1 ·K -1 While the thermal conductivity of seawater is relatively high, its refractive index is also relatively large (approximately 1.8), resulting in a significant difference from the refractive index of seawater and thus higher light loss. Green phosphors are selected from β-SiAlON:Eu phosphors and / or LuAG:Ce phosphors. These phosphors have fewer defects, high light transmittance, strong resistance to moisture, acids, and alkalis, and good thermal conductivity.

[0044] In a further preferred embodiment of the invention, the light-transmitting element 1 is made of fused silica glass. The slurry used to prepare the green functional layer 2 comprises, by weight:

[0045] 0.1-2 parts green phosphor, 0.8-5 parts B2O3-Al2O3-ZnO-SiO2 glass powder, 4-8 parts wetting agent, and 10-30 parts dispersant;

[0046] The wetting agent is terpineol, but not limited to it. The dispersant is ethylene glycol and / or ethyl acetate, but not limited to it.

[0047] The formula for B2O3-Al2O3-ZnO-SiO2 glass powder is as follows: 20-30 parts boric acid, 3-8 parts aluminum hydroxide, 8-15 parts zinc oxide, and 50-70 parts silicon dioxide. The preparation process is as follows: boric acid, aluminum hydroxide, zinc oxide, and silicon dioxide, all with a purity of 99.9%, are mixed according to the formula, then melted at 1350-1500℃. The melted glass liquid is then rapidly cooled, and the resulting molten block is ball-milled to obtain glass powder.

[0048] The slurry obtained based on the above components has several advantages: First, it has a low organic content, resulting in a highly dense, corrosion-resistant, and light-transmitting green functional layer 2 after firing. Second, it has reasonable fluidity, allowing it to be directly coated into the groove 11 using a scraping process, simplifying the fabrication process of the light-converting component. Third, its refractive index matches that of fused silica glass, minimizing light loss.

[0049] In a further preferred embodiment of the invention, the light-transmitting element 1 is made of alumina transparent ceramic or sapphire, and the slurry for preparing the green functional layer 2 comprises, by weight:

[0050] 0.1-2 parts green fluorescent powder, 0.8-5 parts heavy flint glass powder, 4-8 parts wetting agent, and 10-30 parts dispersant;

[0051] The wetting agent is selected from one or more of terpineol, but is not limited to this. The dispersant is selected from one or more of ethylene glycol and ethyl acetate, but is not limited to this.

[0052] Heavy flint glass powder is a common type of glass powder in this field. Specifically, it can be in the powder form of Schott AG N-SF10728285.305 glass, but is not limited to this.

[0053] The slurry obtained based on the above components has several advantages: First, it has a low organic content, resulting in high density, strong corrosion resistance, and good light transmittance in the green functional component 2 after firing. Second, it has reasonable fluidity, allowing it to be directly coated into the groove 11 using a scraping process, simplifying the fabrication process of the light-converting component. Third, its refractive index matches that of sapphire / alumina transparent ceramic, resulting in minimal light loss.

[0054] To enhance the lighting effect, a BPYR film 3 is also provided on the bottom surface of the groove 11. (Reference) Figure 4 and Figure 5The BPYR film 3 includes a first SiO2 layer 31 disposed on the bottom surface of the groove 1, a TiO2 layer 32 and a second SiO2 layer 33 periodically stacked on the first SiO2 layer 31, and a third SiO2 layer 34 disposed on the second SiO2 layer 33. The thickness of the first SiO2 layer 31 is the same as the thickness of the third SiO2 layer 34, and is twice the thickness of the second SiO2 layer 32. Specifically, the thickness of the first SiO2 layer 31 is 50-60 nm, the thickness of the second SiO2 layer 33 is 100-120 nm, the thickness of the TiO2 layer 32 is 65-75 nm, and the thickness of the third SiO2 layer 34 is 50-60 nm. The total thickness of the BPYR film 3 is 1.5-2.5 μm. The number of repetition periods for the TiO2 layer 32 and the second SiO2 layer 33 is 2-10. The BPYR film 3 can be formed by sputtering, vapor deposition, or other methods, but is not limited to these.

[0055] Furthermore, to enhance the lighting effect, an AR film 4 is provided on the light-incident surface of the light-transmitting component.

[0056] Accordingly, the present invention also provides a method for preparing the above-mentioned light-converting component for a deep-sea laser light, which specifically includes the following steps:

[0057] S1: Provide a light-transmitting element, and form at least one groove on the light-emitting surface of the light-transmitting element;

[0058] Specifically, grooves can be formed through processes such as laser cutting and etching, but are not limited to these. Preferably, grooves are formed by laser cutting.

[0059] S2: Fill the groove with slurry;

[0060] Specifically, the slurry can be filled by scraping, but it is not limited to this method.

[0061] S3: Sinter the light-transmitting part after filling with slurry;

[0062] Specifically, sintering removes organic matter from the slurry and melts the glass powder, allowing it to act as a binder. The specific sintering temperature depends on the type of glass powder. In one embodiment of the invention, when B2O3-Al2O3-ZnO-SiO2 glass powder or heavy flint glass powder is used, the sintering temperature is 500-800℃, and the temperature is maintained at this temperature for 0.2-1 hour.

[0063] S4: Polish the light-emitting surface of the sintered light-converting component to obtain the final product.

[0064] Accordingly, the present invention also discloses a deep-sea laser light, which includes a blue semiconductor laser and the aforementioned light conversion component, wherein the blue semiconductor laser is movable relative to the light conversion component.

[0065] The present invention will now be described with reference to specific embodiments:

[0066] Example 1

[0067] This embodiment provides a light-converting component for a deep-sea laser light, referenced... Figure 4 and Figure 5 It includes a light-transmitting element 1 and a green functional layer 2. The light-incident surface of the light-transmitting element 1 is covered with an AR film 4, and a groove 11 with a sloping bottom surface is provided on its light-exiting surface. The bottom surface of the groove 11 is covered with a BPYR film 3, and the entire groove 11 is filled by the green functional layer 2.

[0068] The light-transmitting element 1 is made of sapphire, and the BPYR film 3 includes a first SiO2 layer 31 (52nm) disposed on the bottom surface of the groove 1, a TiO2 layer 32 (68nm) periodically stacked (number of periods: 8) on the first SiO2 layer 31, a second SiO2 layer 33 (104nm), and a third SiO2 layer 34 (52nm) disposed on the second SiO2 layer 33.

[0069] The green functional layer is obtained by sintering a slurry, and the slurry formula is as follows:

[0070] 0.2 parts LuAG:Ce phosphor, 1 part B2O3-Al2O3-ZnO-SiO2 glass powder, 2.5 parts terpineol, 5 parts ethylene glycol, and 5.5 parts ethyl acetate.

[0071] The method for preparing this light-converting component is as follows:

[0072] S1: Provide a light-transmitting component, and cut a groove on the light-emitting surface of the light-transmitting component;

[0073] S2: Sputter BPYR film on the bottom surface of the groove and sputter AR film on the back of the light-transmitting component;

[0074] S3: Apply slurry to the groove;

[0075] S4: Sinter the light-transmitting parts after applying the slurry;

[0076] Specifically, the sintering temperature is 750℃, and the holding time is 0.5h.

[0077] S5: Polish the light-emitting surface of the sintered light-converting component to obtain the final product.

[0078] Example 2

[0079] This embodiment provides a light-converting component for a deep-sea laser light, referenced... Figure 6It includes a light-transmitting element 10 and a green functional layer 20. The light-incident surface of the light-transmitting element 1 is covered with an AR film 30, and a groove 11 with a sloping bottom surface is provided on its light-exiting surface. The groove 11 is filled by the green functional layer 2.

[0080] The light-transmitting component 10 is made of sapphire, and the green functional layer 20 is obtained by sintering a paste. The paste formula is as follows:

[0081] 0.2 parts LuAG:Ce phosphor, 1 part B2O3-Al2O3-ZnO-SiO2 glass powder, 2.5 parts terpineol, 5 parts ethylene glycol, and 5.5 parts ethyl acetate.

[0082] The method for preparing this light-converting component is as follows:

[0083] S1: Provide a light-transmitting component, and cut a groove on the light-emitting surface of the light-transmitting component;

[0084] S2: Apply slurry to the groove;

[0085] S3: Sinter the light-transmitting parts after applying the slurry;

[0086] Specifically, the sintering temperature is 750℃, and the holding time is 0.5h.

[0087] S4: Sputter an AR film on the back of the light conversion component;

[0088] S5: Polish the light-emitting surface of the sintered light-converting component to obtain the final product.

[0089] The transmittance of the light-converting components obtained in Examples 1 and 2 was tested for blue light (450nm). The transmittance of Example 1 was 99.6%, and that of Example 2 was 88.3%.

[0090] The above description is a preferred embodiment of the invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the invention, and these improvements and modifications are also considered to be within the scope of protection of the invention.

Claims

1. A light-converting component for a deep-sea laser light, characterized in that, It includes a light-transmitting element and a green functional layer. The light-transmitting element has a groove with an inclined bottom surface on its light-emitting surface. A BPYR film is provided on the bottom surface of the groove. The green functional layer is disposed in the groove and fills the groove. The light-transmitting element is made of fused silica glass, alumina transparent ceramic, or sapphire. The BPYR film includes a first SiO2 layer and a third SiO2 layer. The first SiO2 layer is disposed on the bottom surface of the groove. A TiO2 layer and a second SiO2 layer are periodically stacked between the first SiO2 layer and the third SiO2 layer. The thickness of the first SiO2 layer is the same as the thickness of the third SiO2 layer, and is twice the thickness of the second SiO2 layer; The thickness of the BPYR film is 1.5-2.5 μm; The green functional layer is obtained by sintering a slurry containing green phosphor, wherein the green phosphor is selected from β-SiAlON:Eu phosphor and / or LuAG:Ce phosphor.

2. The light-converting component for a deep-sea laser light as described in claim 1, characterized in that, The light-transmitting element is made of fused quartz glass, and the slurry comprises, by weight: 0.1-2 parts green phosphor, 0.8-5 parts B2O3-Al2O3-ZnO-SiO2 glass powder, 4-8 parts wetting agent, and 10-30 parts dispersant; The wetting agent is terpineol, and the dispersant is ethylene glycol and / or ethyl acetate.

3. The light-converting component for a deep-sea laser light as described in claim 1, characterized in that, The light-transmitting element is made of alumina transparent ceramic or sapphire, and the slurry comprises, by weight: 0.1-2 parts green fluorescent powder, 0.8-5 parts heavy flint glass powder, 4-8 parts wetting agent, and 10-30 parts dispersant; The wetting agent is terpineol, and the dispersant is ethylene glycol and / or ethyl acetate.

4. The light-converting component for a deep-sea laser light as described in claim 1, characterized in that, Therefore, the thickness of the first SiO2 layer is 50-60nm, the thickness of the second SiO2 layer is 100-120nm, the thickness of the TiO2 layer is 65-75nm, and the thickness of the third SiO2 layer is 50-60nm.

5. The light-converting component for a deep-sea laser light as described in claim 1, characterized in that, An AR film is provided on the light-incident surface of the light-transmitting component.

6. A method for fabricating a light-converting component for a deep-sea laser light, used to fabricate the light-converting component for a deep-sea laser light as described in any one of claims 1-5, characterized in that, include: (1) Provide a light-transmitting element, wherein at least one groove is formed on the light-emitting surface of the light-transmitting element; (2) Fill the groove with slurry; (3) Sinter the light-transmitting part after filling with slurry; (4) Polish the light-emitting surface of the sintered light-converting component to obtain the light.

7. The method for preparing the light-converting component for a deep-sea laser light as described in claim 6, characterized in that, In step (3), the light-transmitting part after filling with slurry is kept at 500-800℃ for 0.2~1h.

8. A deep-sea laser light, characterized in that, It includes a blue semiconductor laser and a light-converting component for a deep-sea laser light as described in any one of claims 1 to 5, wherein the blue semiconductor laser is movable relative to the light-converting component.

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