阅读说明：本技术 一种琥珀色中透低反双银节能镀膜玻璃及制备方法 (Amber medium-transmittance low-reflection double-silver energy-saving coated glass and preparation method thereof ) 是由 梁干 唐晶 武瑞军 于 2019-09-27 设计创作，主要内容包括：本发明公开一种琥珀色中透低反双银节能镀膜玻璃及制备方法,其包括玻璃基片以及镀设于所述玻璃基片一侧表面的复合膜层,所述复合膜层包括所述玻璃基体上由内到外依次相邻地复合的第一功能层、第一介质保护层、第二介质保护层、第二功能层、第三功能层、第一保护层、第三介质保护层、第四功能层、第二保护层、第四介质保护层；第一功能层为SSTZrOX层；制备方法采用磁控溅射工艺,在玻璃基片上由内到外依次相邻地镀设十个膜层。本发明设计的其琥珀色中透低反双银节能镀膜玻璃,通过复合膜层结构及膜层厚度搭配来降低产品的反射率,其室外面反射率小于7,有效防止光污染；镀膜玻璃外观呈琥珀色,丰富市场上玻璃产品外观颜色。(The invention discloses amber middle-transmittance low-transmittance reverse double-silver energy-saving coated glass and a preparation method thereof, wherein the amber middle-transmittance low-reflectance double-silver energy-saving coated glass comprises a glass substrate and a composite film layer plated on one side surface of the glass substrate, wherein the composite film layer comprises a first functional layer, a first medium protective layer, a second functional layer, a third functional layer, a first protective layer, a third medium protective layer, a fourth functional layer, a second protective layer and a fourth medium protective layer which are sequentially and adjacently compounded on a glass substrate from inside to outside; the first functional layer is an SSTROX layer; the preparation method adopts a magnetron sputtering process, and ten film layers are sequentially and adjacently plated on the glass substrate from inside to outside. According to the amber middle-transmission low-reflection double-silver energy-saving coated glass designed by the invention, the reflectivity of the product is reduced through the matching of the composite film layer structure and the film layer thickness, the reflectivity of the outdoor surface is less than 7, and the light pollution is effectively prevented; the appearance of the coated glass is amber, and the appearance color of glass products in the market is enriched.)

1. The amber middle-transmittance low-transmittance anti-reflection double-silver energy-saving coated glass is characterized by comprising a glass substrate (1) and a composite film layer (2) plated on one side surface of the glass substrate (1), wherein the composite film layer (2) comprises a first functional layer (21), a first dielectric protective layer (22), a second dielectric protective layer (23), a second functional layer (24), a third functional layer (25), a first protective layer (26), a third dielectric protective layer (27), a fourth functional layer (28), a second protective layer (29) and a fourth dielectric protective layer (30) which are sequentially and adjacently compounded on a glass substrate from inside to outside; the first functional layer (21) is an SSTZrOX layer, and the thickness of the SSTZrOX layer is 3.5-5 nm.

2. The amber middle-transmission low-reflection double-silver energy-saving coated glass as claimed in claim 1, wherein the first dielectric protection layer (22) is an AZO layer, the second dielectric protection layer (23) is a ZnO layer, and the third dielectric protection layer (27) is a ZnO/ZnSnO layer.

3. The amber energy-saving double-silver coated glass with medium transmittance and low reflectance as claimed in claim 2, wherein the AZO layer has a thickness of 7-9nm, the ZnO layer has a thickness of 26-34nm, and the total thickness of the ZnO/ZnSnO layer is 38-46 nm.

4. The amber medium-transparent low-reflection double-silver energy-saving coated glass as claimed in claim 1, wherein the fourth dielectric protection layer (30) is Si₃N₄Any one or more of SiNxOy, SiOx and TiOx, and the thickness of the fourth dielectric protection layer (30) is 15-25 nm.

5. The amber medium-transparent low-reflection double-silver energy-saving coated glass as claimed in claim 1, wherein the second functional layer (24) and the fourth functional layer (28) are both Ag layers, and the third functional layer (25) is a Cu layer.

6. The amber energy-saving double-silver coated glass with medium transmittance and low reflectance according to claim 5, wherein the thickness of the second functional layer (24) is 9-10nm, the thickness of the third functional layer (25) is 3-4nm, and the thickness of the fourth functional layer is 4.5-5.5 nm.

7. The amber middle-transparent low-reflection double-silver energy-saving coated glass as claimed in claim 1, wherein the first protective layer (26) and the second protective layer (29) are both any one or a plurality of composite layers of CrNxOy, CrNx, NiCrNx, NiCrNxOy and NiCr; the thickness of the first protective layer (26) is 1.5-2nm, and the thickness of the second protective layer (29) is 1-2 nm.

8. The method for preparing the amber energy-saving double-silver coated glass with medium transmittance and low reflectance according to any one of claims 1 to 7, which is characterized by comprising the following steps:

a magnetron sputtering process is adopted, and a first functional layer with the thickness of 3.5-5nm, a first medium protective layer with the thickness of 7-9nm, a second medium protective layer with the thickness of 26-34nm, a second functional layer with the thickness of 9-10nm, a third functional layer with the thickness of 3-4nm, a first protective layer with the thickness of 1.5-2nm, a third medium protective layer with the thickness of 38-46nm, a fourth functional layer with the thickness of 4.5-5.5nm, a second protective layer with the thickness of 1-2nm and a fourth medium protective layer with the thickness of 15-25nm are sequentially and adjacently plated on a glass substrate from inside to outside.

9. The method for preparing amber middle-transmitting low-reflection double-silver energy-saving coated glass according to claim 8,

(1) magnetron sputtering a first functional layer: plating a first functional layer SSTZrOX layer on a glass substrate by adopting a magnetron sputtering process, and sputtering a zirconium-doped stainless steel target Fe by using an alternating current medium frequency power supply and oxygen as reaction gases: zr is 80:20, the argon-oxygen flow ratio is 650SCCM-750 SCCM: 850SCCM-950 SCCM;

(2) magnetron sputtering of a first dielectric protective layer: plating a first dielectric protection layer AZO layer on the SSTZrOX layer as a first functional layer by adopting a magnetron sputtering process, sputtering a ceramic AZO target by using a medium-frequency alternating-current power supply, and using pure argon as sputtering gas, wherein the flow ratio of the argon is 1400-1600 SCCM;

(3) magnetron sputtering a second dielectric protective layer: plating a second medium protective layer ZnO layer on the first medium protective layer AZO layer by a magnetron sputtering process, sputtering by using an alternating current power supply, using argon and oxygen as sputtering gases, wherein the gas flow ratio is 650-750 SCCM: 950-1050 SCCM;

(4) magnetron sputtering a second functional layer: plating a second functional layer Ag layer on the second medium protective layer ZnO layer by adopting a magnetron sputtering process, sputtering a pure Ag target by using a direct current power supply, and using argon as sputtering gas with the flow of the argon being 1100SCCM-1300 SCCM;

(5) magnetron sputtering a third functional layer: plating a third functional layer Cu layer on the second functional layer Ag layer by adopting a magnetron sputtering process, sputtering by using a direct current power supply, using argon as process gas, and controlling the gas flow to be 1100SCCM-1300 SCCM;

(6) magnetron sputtering of a first protective layer: plating a first protective layer CrNxOy layer on the third functional layer Cu layer by adopting a magnetron sputtering process, sputtering by using a direct-current power supply, using nitrogen as reaction gas, and permeating a small amount of oxygen;

(7) magnetron sputtering a third dielectric protective layer: plating a third medium protective layer ZnO/ZnSnO layer on the first protective layer CrNxOy layer by adopting a magnetron sputtering process, sputtering a Zn/ZnSn target by using an alternating-current intermediate-frequency power supply and using argon and oxygen as reaction gases, wherein the flow ratio of the argon to the oxygen is 650SCCM-750 SCCM: 950SCCM-1050 SCCM;

(8) magnetron sputtering a fourth functional layer: plating a fourth functional layer Ag layer on the third medium protective layer ZnO/ZnSnO layer by adopting a magnetron sputtering process, and sputtering by using a direct current power supply, wherein the gas flow is 1100SCCM-1300 SCCM;

(9) magnetron sputtering a second protective layer: plating a second protective layer CrNxOy layer on the fourth functional layer Ag layer by adopting a magnetron sputtering process, sputtering by using a direct-current power supply, using nitrogen as reaction gas, and permeating a small amount of oxygen;

(10) magnetron sputtering a fourth dielectric protective layer, plating a fourth dielectric protective layer Si on the CrNxOy layer of the second protective layer by adopting a magnetron sputtering process₃N₄The layer is formed by sputtering a silicon-aluminum target by using an alternating current medium frequency power supply and argon nitrogen as a reaction gas, wherein the mass percentage of silicon to aluminum is 90:10, and the flow ratio of argon to nitrogen is 650-750 SCCM: 850SCCM-950 SCCM.

10. The method for preparing amber middle-transmitting low-reflection double-silver energy-saving coated glass according to claim 9, wherein the thickness of the SSTZrOX layer is 3.98nm, the thickness of the AZO layer is 8nm, the thickness of the ZnO layer is 30.2nm, the thickness of the Ag layer is 9.45nm, and the method for preparing the SSTZrOX layer and the AZO layer is characterized in thatThe thickness of the Cu layer is 3.65nm, the thickness of the CrNxOy layer is 1.98nm, the thickness of the ZnO/ZnSnO layer is 42.1nm, the thickness of the Ag layer is 5.20nm, the thickness of the CrNxOy layer is 1.39nm, and the Si layer is formed by sintering₃N₄The thickness of the layer was 20.5 nm.

Technical Field

The invention relates to the field of glass production, in particular to amber double-silver energy-saving coated glass with medium transmittance and low reflectance and a preparation method thereof.

Background

The existing engineering glass products are basically blue-gray in appearance and single in color, so that the colors of buildings are uniform, and aesthetic fatigue is easy to make. With the increasingly strict requirements of Shanghai environment evaluation systems on the exterior reflection of LOW-E products for building curtain walls, more and more projects are required in Shanghai areas to require curtain wall reflectivity to be lower than 9%, so that the requirement that the reflectivity is lower than 9% is met, and the products are rich, beautiful and beautiful in appearance color, luster and attractive. The problems of high reflectivity and low transmittance (the visible light transmittance is lower than 38%) of the color series products developed on the market at present generally do not meet the national standard requirement (the visible light transmittance of a curtain wall is higher than 40%) so that the color series products cannot be popularized, so that the glass which can meet the transmittance requirement and the reflectance requirement needs to be developed, the appearance color of the low-reflectivity products can be enriched, and different requirements of the market can be met.

At present, a great deal of production research is carried out on champagne-color series coated glass, but the visible light reflectivity is high, the light pollution is easy to cause, and the market demand cannot be met, for example, the invention patent application with the publication number of CN106904842A discloses champagne-color double-silver low-emissivity coated glass, and the color range of a single glass sheet with the thickness of 6mm is as follows: r is more than or equal to 14.5 and less than or equal to 17, a is more than or equal to 2 and less than or equal to 2.5, and b is more than or equal to 7 and less than or equal to 8. For example, patent application publication No. CN207468490U discloses champagne-colored double silver Low-E glass, in which the reflectivity of the single glass surface is about 16%, the color a × g is about 7, and b × g is about 28, and the reflectivity of the products of the above two patents is high, and both are liable to cause light pollution.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides amber middle-transmission low-reflection double-silver energy-saving coated glass and a preparation method thereof, so as to enrich the color of the glass and reduce the reflectivity, and the technical scheme is as follows:

the invention provides amber middle-transmittance low-transmittance reverse double-silver energy-saving coated glass, which comprises a glass substrate and a composite film layer plated on one side surface of the glass substrate, wherein the composite film layer comprises a first functional layer, a first medium protective layer, a second functional layer, a third functional layer, a first protective layer, a third medium protective layer, a fourth functional layer, a second protective layer and a fourth medium protective layer which are sequentially and adjacently compounded on a glass substrate from inside to outside; the first functional layer is an SSTZrOX layer, and the thickness of the SSTZrOX layer is 3.5-5 nm.

Further, the first dielectric protection layer is an AZO layer, the second dielectric protection layer is a ZnO layer, and the third dielectric protection layer is a ZnO/ZnSnO layer.

Further, the thickness of the AZO layer is 7-9nm, the thickness of the ZnO layer is 26-34nm, and the total thickness of the ZnO/ZnSnO layer is 38-46 nm.

Further, the fourth dielectric protection layer is Si₃N₄Any one or more of SiNxOy, SiOx and TiOx, and the thickness of the fourth dielectric protective layer is 15-25 nm.

Further, the second functional layer and the fourth functional layer are both Ag layers, and the third functional layer is a Cu layer.

Further, the thickness of the second functional layer is 9-10nm, the thickness of the third functional layer is 3-4nm, and the thickness of the fourth functional layer is 4.5-5.5 nm.

Furthermore, the first protective layer and the second protective layer are both one or more of CrNxOy, CrNx, NiCrNx, NiCrNxOy and NiCr composite layers; the thickness of the first protective layer is 1.5-2nm, and the thickness of the second protective layer is 1-2 nm.

The invention also provides a preparation method of the amber middle-transmission low-reflection double-silver energy-saving coated glass, which comprises the following steps: a magnetron sputtering process is adopted, and a first functional layer with the thickness of 3.5-5nm, a first medium protective layer with the thickness of 7-9nm, a second medium protective layer with the thickness of 26-34nm, a second functional layer with the thickness of 9-10nm, a third functional layer with the thickness of 3-4nm, a first protective layer with the thickness of 1.5-2nm, a third medium protective layer with the thickness of 38-46nm, a fourth functional layer with the thickness of 4.5-5.5nm, a second protective layer with the thickness of 1-2nm and a fourth medium protective layer with the thickness of 15-25nm are sequentially and adjacently plated on a glass substrate from inside to outside.

Further, (1) magnetron sputtering the first functional layer: plating a first functional layer SSTZrOX layer on a glass substrate by adopting a magnetron sputtering process, and sputtering a zirconium-doped stainless steel target Fe by using an alternating current medium frequency power supply and oxygen as reaction gases: zr is 80:20, the argon-oxygen flow ratio is 650SCCM-750 SCCM: 850SCCM-950 SCCM;

(2) magnetron sputtering of a first dielectric protective layer: plating a first dielectric protection layer AZO layer on the SSTZrOX layer as a first functional layer by adopting a magnetron sputtering process, sputtering a ceramic AZO target by using a medium-frequency alternating-current power supply, and using pure argon as sputtering gas, wherein the flow ratio of the argon is 1400-1600 SCCM;

(3) magnetron sputtering a second dielectric protective layer: plating a second medium protective layer ZnO layer on the first medium protective layer AZO layer by a magnetron sputtering process, sputtering by using an alternating current power supply, using argon and oxygen as sputtering gases, wherein the gas flow ratio is 650-750 SCCM: 950-1050 SCCM;

(4) magnetron sputtering a second functional layer: plating a second functional layer Ag layer on the second medium protective layer ZnO layer by adopting a magnetron sputtering process, sputtering a pure Ag target by using a direct current power supply, and using argon as sputtering gas with the flow of the argon being 1100SCCM-1300 SCCM;

(5) magnetron sputtering a third functional layer: plating a third functional layer Cu layer on the second functional layer Ag layer by adopting a magnetron sputtering process, sputtering by using a direct current power supply, using argon as process gas, and controlling the gas flow to be 1100SCCM-1300 SCCM;

(6) magnetron sputtering of a first protective layer: plating a first protective layer CrNxOy layer on the third functional layer Cu layer by adopting a magnetron sputtering process, sputtering by using a direct-current power supply, using nitrogen as reaction gas, and permeating a small amount of oxygen;

(7) magnetron sputtering a third dielectric protective layer: plating a third medium protective layer ZnO/ZnSnO layer on the first protective layer CrNxOy layer by adopting a magnetron sputtering process, sputtering a Zn/ZnSn target by using an alternating-current intermediate-frequency power supply and using argon and oxygen as reaction gases, wherein the flow ratio of the argon to the oxygen is 650SCCM-750 SCCM: 950SCCM-1050 SCCM;

(8) magnetron sputtering a fourth functional layer: plating a fourth functional layer Ag layer on the third medium protective layer ZnO/ZnSnO layer by adopting a magnetron sputtering process, and sputtering by using a direct current power supply, wherein the gas flow is 1100SCCM-1300 SCCM;

(9) magnetron sputtering a second protective layer: plating a second protective layer CrNxOy layer on the fourth functional layer Ag layer by adopting a magnetron sputtering process, sputtering by using a direct-current power supply, using nitrogen as reaction gas, and permeating a small amount of oxygen;

(10) magnetron sputtering a fourth dielectric protective layer, plating a fourth dielectric protective layer Si on the CrNxOy layer of the second protective layer by adopting a magnetron sputtering process₃N₄The layer is formed by sputtering a silicon-aluminum target by using an alternating current medium frequency power supply and argon nitrogen as a reaction gas, wherein the mass percentage of silicon to aluminum is 90:10, and the flow ratio of argon to nitrogen is 650-750 SCCM: 850SCCM-950 SCCM.

Further, the thickness of the SSTZrOX layer is 3.98nm, the thickness of the AZO layer is 8nm, the thickness of the ZnO layer is 30.2nm, the thickness of the Ag layer is 9.45nm, the thickness of the Cu layer is 3.65nm, the thickness of the CrNxOy layer is 1.98nm, the thickness of the ZnO/ZnSnO layer is 42.1nm, the thickness of the Ag layer is 5.20nm, the thickness of the CrNxOy layer is 1.39nm, and the thickness of the Si layer is 3.98nm₃N₄The thickness of the layer was 20.5 nm.

The technical scheme provided by the invention has the following beneficial effects:

a. the amber middle-transmission low-reflection double-silver energy-saving coated glass developed by the invention is amber in appearance, and can enrich the appearance color of glass products in the market;

b. according to the amber middle-transmission low-reflection double-silver energy-saving coated glass, the reflectivity of the product is reduced through the matching of the composite film layer structure and the film layer thickness, and the visible light reflectivity of the outdoor surface of the product is less than 7;

c. the amber middle-transmittance low-reflection double-silver energy-saving coated glass developed by the invention has beautiful and attractive color, can effectively reduce the visible light reflectivity while achieving the transmittance meeting the requirements of laws and regulations, and can prevent the light pollution phenomenon.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a side view of an amber middle transmission low reflection double silver energy-saving coated glass provided by an embodiment of the invention;

fig. 2 is a test result graph of a glass surface visible light reflection curve of the amber middle transmission low reflection double-silver energy-saving coated glass provided by the embodiment of the invention;

fig. 3 is a graph of a test result of a film surface visible light reflection curve of the amber middle transmission low reflection double-silver energy-saving coated glass provided by the embodiment of the invention.

Wherein the reference numerals include: 1-a glass substrate, 2-a composite film layer, 21-a first functional layer, 22-a first dielectric protective layer, 23-a second dielectric protective layer, 24-a second functional layer, 25-a third functional layer, 26-a first protective layer, 27-a third dielectric protective layer, 28-a fourth functional layer, 29-a second protective layer, and 30-a fourth dielectric protective layer.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.

The glass product with the transmittance of between 40 and 60 percent is called as a medium-transmittance product; low reflectance as referred to herein means a visible light reflectance of less than 7.

In an embodiment of the invention, an amber middle-transmittance low-reflectance double-silver energy-saving coated glass and a preparation method thereof are provided, and a specific structure is shown in fig. 1, the amber middle-transmittance low-reflectance double-silver energy-saving coated glass comprises a glass substrate 1 and a composite film layer 2 plated on one side surface of the glass substrate 1, wherein the composite film layer 2 comprises a first functional layer 21, a first dielectric protective layer 22, a second dielectric protective layer 23, a second functional layer 24, a third functional layer 25, a first protective layer 26, a third dielectric protective layer 27, a fourth functional layer 28, a second protective layer 29 and a fourth dielectric protective layer 30 which are sequentially compounded on the glass substrate from inside to outside in an adjacent manner.

The method comprises the following specific steps:

the first functional layer, namely the innermost layer, is an SSTZrOX layer, namely a zirconium-doped stainless steel oxide layer, the refractive index of the film layer is improved during reactive sputtering by doping zirconium in the stainless steel, the refractive index of the film layer can reach about 2.0, the transmittance of a product is further improved, and an amber color layer can be adjusted to obtain an amber effect. The thickness of the SSTZrOX layer is 3.5-5 nm.

The first dielectric protection layer 22 is an AZO layer, namely an aluminum-doped zinc oxide layer, which can improve the flatness of the film layer, and can reduce the radiance by laying a ZnO, Ag, Cu layer, and the thickness of the AZO layer is 7-9 nm.

The second dielectric protection layer 23 is a ZnO layer, the thickness of the ZnO layer is 26-34nm,

the second functional layer 24 is an Ag layer which can effectively reduce the radiance, the thickness of the second functional layer 24 is 9-10nm,

the third functional layer 25 is a Cu layer, namely a metal copper layer, which can improve the transmission color of the film layer and reduce the radiance, and the thickness of the Cu layer is 3-4 nm; the Cu layer has the functions of improving energy-saving performance and improving the transmission color of the product.

The first protection layer 26 is any one or any multiple of CrNxOy, CrNx, NiCrNx, NiCrNxOy and NiCr, can improve the wear resistance and oxidation resistance of the film layer to protect the silver layer and the copper layer from being oxidized, is preferably a CrNxOy chromium oxynitride layer, and the thickness of the first protection layer 26 is 1.5-2 nm.

The third dielectric protection layer 27 is a ZnO/ZnSnO layer which can be used for controlling and adjusting the color of the film layer, and the total thickness of the ZnO/ZnSnO layer is 38-46 nm.

The fourth functional layer 28 is an Ag layer, i.e., a metal silver layer, and has good conductivity, so that the radiance of the film layer can be effectively reduced, and the effects of environmental protection and energy saving are achieved, and the thickness of the fourth functional layer is 4.5-5.5 nm.

The second protection layer 29 is any one or any multi-layer composite layer of CrNxOy, CrNx, NiCrNx, NiCrNxOy and NiCr, preferably CrNxOy, namely a chromium oxynitride layer, so that the wear resistance and the oxidation resistance of the film layer are improved, and the thickness of the second protection layer 29 is 1-2 nm.

The fourth dielectric protection layer 30, i.e. the outermost layer, is Si₃N₄Any one or more of SiNxOy, SiOx and TiOx, preferably Si₃N₄Layer, i.e. silicon nitride layer, Si₃N₄The layer is a very hard material, improves the physical property and the scratch resistance of the film layer, ensures that the whole coating has good mechanical durability, and is arranged at the outermost layer as a first barrier for protecting the whole film layer; the thickness of the fourth dielectric protection layer 30 is 15-25 nm.

Further explanation is as follows: the x and the y are positive numbers, the protective layer can protect the functional layer from being damaged, and the medium protective layer not only has the function of protecting the functional layer, but also can be used for adjusting the color.

The invention also provides a method for preparing the amber medium-transmittance low-reflection double-silver energy-saving coated glass, which comprises the following steps: a magnetron sputtering process is adopted, and a first functional layer 21 with the thickness of 3.5-5nm, a first medium protective layer 22 with the thickness of 7-9nm, a second medium protective layer 23 with the thickness of 26-34nm, a second functional layer 24 with the thickness of 9-10nm, a third functional layer 25 with the thickness of 3-4nm, a first protective layer 26 with the thickness of 1.5-2nm, a third medium protective layer 27 with the thickness of 38-46nm, a fourth functional layer 28 with the thickness of 4.5-5.5nm, a second protective layer 29 with the thickness of 1-2nm and a fourth medium protective layer 30 with the thickness of 15-25nm are sequentially and adjacently plated on the glass substrate 1 from inside to outside.

The color of each film layer can be adjusted, through the combined action of all the film layers, the finally prepared amber middle-transmission low-reflection double-silver energy-saving coated glass can show an amber color (amber comprises light yellow, light golden, lemon yellow, orange yellow, brown yellow, champagne and the like), and the amber color can be adjusted only if the thickness of each film layer is within the range. According to the amber middle-transmission low-reflection double-silver energy-saving coated glass provided by the invention, the reflectivity can be adjusted to be below 7 through a specific film layer structure and a specific proportion (film layer thickness), so that the light pollution caused by buildings can be effectively reduced, and even the amber middle-transmission low-reflection double-silver energy-saving coated glass is basically free of light pollution.

The following are specific examples.