Anti-flare blue glass and preparation process thereof

Abstract

The invention provides anti-flare blue glass and a preparation method thereof.The anti-flare blue glass comprises a blue glass substrate, the blue glass substrate is sequentially provided with an aluminum-lanthanide series layer, a spin-coating layer and a coating layer, the aluminum-lanthanide series layer is used for increasing the combination degree of the spin-coating layer and the blue glass substrate, the spin-coating layer is used for absorbing reflected light of an IR face of the blue glass, and the coating layer is used for coating the blue glass substrate. The preparation process comprises the following steps: cleaning a middle sheet, plating an aluminum-lanthanide series layer through a film plating machine, pre-melting aluminum-lanthanide series compound powder into liquid, solidifying to form a target material, placing the target material in the film plating machine, injecting argon and oxygen into the film plating machine, ionizing the argon by the film plating machine to bombard the target material, and carrying out heat treatment on the target material to obtain the aluminum-lanthanide series layer. The surface of the blue glass substrate is plated with a two-aluminum three-lanthanum oxide layer, then the blue glass substrate is cleaned, and spin coating is carried out by a spin coater. After the surface of the blue glass is plated with the aluminum-lanthanide coating layer, it is guaranteed that the blue glass is stably combined with the spin-coating layer, spectrum spin coating is carried out, light rays reflected by an IR layer can be absorbed by the bottom through the spin-coating layer, the flare phenomenon is reduced, the spin-coating process is adjusted, and the production efficiency is improved. And the spin-coating spectrum consistency is relatively high.

Description

Technical Field

[0001] The invention relates to the field of lens coating, and in particular to anti-flare blue glass and a preparation process thereof. Background Art

[0002] Blue glass is widely used in optical lenses. Blue glass is mainly fluorinated chlorate. Through AIO visual optical testing, it was found that when AIO was 0° and 30°, the large offset at 690-720nm easily produced stray light. The main reason is that the light with a wavelength of about 690nm, such as Figure 3 , that is, the red light will pass through the blue glass and be reflected by the IR surface of the blue glass, resulting in a red halo around the light and shadow formed, such as Figure 2 As shown. The imaging effect is affected. In the prior art, for example, the invention patent with patent announcement number: CN113307506 A discloses a novel filter manufacturing process in which a spin coating liquid is applied to a substrate. The absorption layer is made by directly spin coating on blue glass. However, since blue glass is fluorinated chlorate, the spin coating liquid has poor bonding during spin coating, resulting in poor consistency between the spin coating center and corners, poor cutoff rate of the 690-720nm spectrum, and the following problems still occur in the existing spin coating process: 1. There are dense points on the surface after spin coating, 2. Radial stripes appear on the surface; 3. The glass corners are unevenly spin coated; 4. There are ring marks on the surface. Summary of the invention

[0003] In order to solve the above technical problems, the present invention proposes a blue glass with anti-flare phenomenon, including a blue glass substrate, on which an aluminum lanthanide layer, a spin-coated layer and a coating layer are sequentially provided, the aluminum lanthanide layer is used to increase the bonding degree between the spin-coated layer and the blue glass substrate, and the spin-coated layer is used to absorb the reflected light of the IR surface of the blue glass.

[0004] Preferably, the aluminum lanthanide layer is di-aluminum-tri-lanthanum oxide.

[0005] Preferably, the coating layer is a plurality of groups of magnesium fluoride coating layers, silicon dioxide coating layers, and titanium pentoxide coating layers.

[0006] A preparation process of blue glass for preventing flare phenomenon is also proposed, comprising the following steps:

[0007] S1: including mid-sheet cleaning, taking the blue glass substrate for ultrasonic cleaning;

[0008] S2: The aluminum lanthanide layer is plated by a coating machine, and the current intensity is preset to be between 400-500 mA. The aluminum lanthanide compound powder is pre-melted into liquid, and a target material is formed after solidification. The target material is placed in the coating machine, and argon and oxygen are injected into the coating machine. The coating machine ionizes the argon gas to bombard the target material, and a di-aluminum and tri-lanthanum oxide layer is plated on the surface of the blue glass substrate and then washed;

[0009] S3: Spin coating by a spin coater. The coated blue glass is placed in a spin coater. The spin coating agent is first filtered once using a 0.45um filter and a 0.25um filter. The spin coating agent is then passed into the spin coater. The speed of the spin coater is 2000-3000rpm. After 20s, it is adjusted to 1000rpm for 10s until the spin coating is completed.

[0010] S4: After the spin-coated blue glass is cleaned, it is immediately placed in a vacuum turnover box, and the reagent is warmed up at the same time;

[0011] S5: The spin-coated blue glass is baked and pre-baked in an oxygen-free oven at 190° / 2.0H, with a temperature increase of 0.5H, a constant temperature of 1H, and a temperature decrease of 0.5H;

[0012] S6: AR coating and IR coating are then performed. During the coating process, magnesium fluoride target, silicon dioxide target and titanium pentoxide target are used as cathode targets, and the aforementioned materials are sequentially plated on the AR surface and the IR surface respectively. The coating steps are the same as those in S2.

[0013] S7: Silk screen printing, laser cutting.

[0014] Preferably, before starting the spin coating each time, the glue port of the spin coater is self-cleaned and 0.1 ml of the drug solution is discharged.

[0015] Preferably, the spin coating thickness is 1.8 μm to 2.48 μm.

[0016] The anti-flare blue glass and its preparation process proposed in the present invention have the following beneficial effects: the present invention plates an aluminum lanthanide layer on the surface of the blue glass to ensure stable bonding with the spin coating layer, and the spin coating spectrum can absorb the light reflected by the IR layer at the bottom through the spin coating layer, thereby reducing the flare phenomenon, and adjusting the spin coating process to make the spin coating spectrum more consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the blue glass layer structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the flare phenomenon produced by ordinary blue glass;

[0020] Figure 3 This is the schematic diagram of the ordinary blue glass flare;

[0021] Figure 4 This is a bad image with dense dots on the surface of blue glass;

[0022] Figure 5 Five-point measurement spectrum for spin-coated substrate;

[0023] Figure 6 Improve the test pattern for the spin coating process wavelength;

[0024] Figure 7 This is a comparison chart of the spectrum test of ordinary blue glass and spin-coated blue glass;

[0025] Figure 8 Schematic diagram of surface radial stripes appearing in the traditional spin coating process;

[0026] Fig. 9 This is a schematic diagram of the blue glass surface obtained by the spin coating method of this process;

[0027] Fig.10 This is the spectrogram of the spin-coated blue glass of the present invention;

[0028] Fig.11 This is a comparison diagram of the absorption of the spin-coated blue glass of the present invention and the non-spin-coated blue glass at 690-750nm;

[0029] Fig.12 This is a schematic diagram of the principle of absorbing reflected light after spin coating of the present invention;

[0030] Fig.13 This is a measured image of blue glass after spin coating of the present invention;

[0031] Among them, 1. blue glass substrate; 2. aluminum lanthanide layer; 3. spin coating layer; 4. coating layer. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] Example 1

[0034] like Figure 1 As shown, the present invention proposes a blue glass with anti-flare phenomenon, including a blue glass substrate 1, on which aluminum and lanthanum oxide, a spin-coated layer 3 and a coating layer 4 are sequentially provided, the aluminum lanthanide layer 2 is used to increase the bonding degree between the spin-coated layer 3 and the blue glass substrate 1, and the bonding degree between the coating layer 4 and the blue glass substrate 1 is also used to absorb the reflected light of the IR surface of the blue glass substrate 1. The coating layer 4 uses a Japanese catalyst spin-coating liquid, and the coating layer 4 is a magnesium fluoride coating, a silicon dioxide coating, and a titanium pentoxide coating. The magnesium fluoride coating is located on both sides of the blue glass substrate 1, and a magnesium fluoride coating, a silicon dioxide coating, and a titanium pentoxide coating are sequentially coated. The coating structure of blue glass is prior art and will not be repeated in this embodiment. Through the coating and the spin-coated layer 3, the reflected light is absorbed by the spin-coated layer 3 to reduce the red halo phenomenon, see for details. Fig.12 , Fig.13 .

[0035] Comparative Example

[0036] Conventional non-spin-coated blue glass was selected.

[0037] In view of the above structure, a preparation process of blue glass for preventing flare phenomenon is proposed, comprising the following steps:

[0038] S1: including mid-sheet cleaning, taking blue glass substrate 1 substrate for ultrasonic cleaning;

[0039] S2: The aluminum lanthanide layer 2 is plated by a coating machine, the current intensity is preset to be between 400-500 mA, the aluminum lanthanide compound powder is pre-melted into liquid, and a target material is formed after solidification, the target material is placed in the coating machine, argon gas and oxygen are injected into the coating machine, and the coating machine ionizes the argon gas to bombard the target material, and a di-aluminum-tri-lanthanum oxide layer is plated on the surface of the blue glass substrate 1 and then washed;

[0040] S3: Spin coating with a spin coater. The coated blue glass is placed in a spin coater. The spin coating agent is first filtered once using a 0.45um filter and once using a 0.25um filter. The spin coating agent is then passed into the spin coater. Before each spin coating operation, the glue port of the spin coater is self-cleaned and 0.1ml of liquid is discharged to prevent the glue on the surface of the glue port of the spin coater from solidifying, which would result in insufficient liquid discharge.

[0041] Filtration can remove fine particles in the spin coating solution and reduce the occurrence of Figure 4 In the case of dense spots, a filtering process is set in this embodiment, and the prepared product has no dense spot problem. In addition, in this embodiment, the speed of the spin coater is 22000rpm. After 20s, it is adjusted to 1000rpm for 10s until the spin coating is completed. After the spin coating liquid is evenly spun at high speed, part of the spin coating liquid evaporates and the viscosity increases. Then, the speed is reduced to reduce the problem of radial lines on the surface. Figure 8 , Fig. 9 As shown in the figure; after the aluminum lanthanide oxide layer is plated in advance, the consistency of the spin-coated surface spectrum is improved, see the attached Figure 5 For the spectral detection curves of the center and the surrounding areas, the spin coating spectrum has good consistency, with a difference of 0.5nm between the four sides and the center.

[0042] S4: After the spin-coated blue glass is cleaned, it is immediately placed in a vacuum turnover box. This reduces the small amount of dust particles in the air (the entire process is in a dust-free workshop, but the purity of the dust-free workshop is still defective), and also reduces the problem of defective spots on the surface. At the same time, the reagent is warmed up to 20°.

[0043] S5: The spin-coated blue glass is baked and pre-baked in an oxygen-free oven at 190° / 2.0H, with a temperature increase of 0.5H, a constant temperature of 1H, and a temperature decrease of 0.5H;

[0044] S6: AR coating and IR coating are then performed. During the coating process, magnesium fluoride target, silicon dioxide target and titanium pentoxide target are used as cathode targets, and the aforementioned materials are sequentially plated on the AR surface and the IR surface respectively. The coating steps are the same as those in S2.

[0045] S7: Silk screen printing, laser cutting.

[0046] Spin coating thickness, see Figure 6 According to the comprehensive spectroscopic T=50%, and when other bands are close to the upper or lower line value after coating, the spin coating process is adjusted in time for improvement. The spin coating thickness is adjusted by increasing or decreasing the thickness of the spin coating liquid. The spin coating thickness is 1.8μm~2.48μm. When T50=635nm, the spin coating thickness is 2.48μm. When T50=640nm, the spin coating thickness is 2.14μm. When T50=645nm, the spin coating thickness is 1.8μm. When T50=650nm, the spin coating thickness is 1.46μm. After spin coating, after AOI spectrum experiment, the spectra of 0°, 30°, and 35° all meet the requirements. See details. Fig.10 , Spectral diagram of spin-coated blue glass.

[0047] At the same time, after the spin coating process, the above embodiments and comparative examples were used to perform spectroscopic tests. Figure 7 , Fig.11 As shown:

[0048] Large AOI 0° and 30° offsets can easily generate stray light and cause flare. The blue glass after spin coating reduces and controls large-angle reflection and widens the reflection wave width. Spin coating increases the absorption of the substrate at 690-720nm. The temperature drift is controlled within 1nm after the coating process is adjusted. Fig.11 , spectrum analysis of blue glass after coating, reducing and controlling large-angle reflection and widening the reflection wave width, spin coating increases the absorption of the substrate at 690-750nm.

[0049] The wavelength test after spin coating process shows that the comprehensive splitting T=50% and other bands after coating are within the specifications.

Claims

1. A blue glass for preventing flare phenomenon, characterized in that: The invention comprises a blue glass substrate, on which an aluminum lanthanide layer, a spin coating layer and a coating layer are sequentially arranged, wherein the aluminum lanthanide layer is used to increase the bonding degree between the spin coating layer and the blue glass substrate, and the spin coating layer is used to absorb the reflected light of the IR surface of the blue glass.

2. The anti-flare blue glass according to claim 1, characterized in that: The aluminum lanthanide layer is di-aluminum-tri-lanthanum oxide.

3. The anti-flare blue glass according to claim 1, characterized in that: The coating layers are multiple groups of magnesium fluoride coating layers, silicon dioxide coating layers, and titanium pentoxide coating layers.

4. A process for preparing blue glass for preventing flare phenomenon, characterized in that: The following steps are involved: S1: including mid-sheet cleaning, taking the blue glass substrate for ultrasonic cleaning; S2: The aluminum lanthanide layer is plated by a coating machine, and the preset current intensity is between 400-500mA. The aluminum lanthanide compound powder is pre-melted into liquid, and a target material is formed after solidification. The target material is placed in the coating machine, and argon and oxygen are injected into the coating machine. The coating machine ionizes the argon gas to bombard the target material, and a di-aluminum and tri-lanthanum oxide layer is plated on the surface of the blue glass and then washed; S3: Spin coating by a spin coater. The coated blue glass is placed in a spin coater. The spin coating agent is first filtered once using a 0.45um filter and a 0.25um filter. The spin coating agent is then passed into the spin coater. The speed of the spin coater is 2000-3000rpm. After 20s, it is adjusted to 1000rpm for 10s until the spin coating is completed. S4: After the spin-coated blue glass is cleaned, it is immediately placed in a vacuum turnover box, and the reagent is warmed up at the same time; S5: The spin-coated blue glass is baked and pre-baked in an oxygen-free oven at 190° / 2.0H, with a temperature increase of 0.5H, a constant temperature of 1H, and a temperature decrease of 0.5H; S6: AR coating and IR coating are then performed. During the coating process, magnesium fluoride target, silicon dioxide target and titanium pentoxide target are used as cathode targets, and the aforementioned materials are sequentially plated on the AR surface and the IR surface respectively. The coating steps are the same as those in S2. S7: Silk screen printing, laser cutting.

5. The process for preparing the anti-flare blue glass according to claim 4, characterized in that: Before starting the spin coating each time, the spin coater nozzle is self-cleaned and 0.1 ml of solution is discharged.

6. The process for preparing the anti-flare blue glass according to claim 4, characterized in that: The spin coating thickness is 1.8 μm to 2.48 μm.

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