CN2657020Y - High transmissivity optical lens - Google Patents
High transmissivity optical lens Download PDFInfo
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- CN2657020Y CN2657020Y CNU032375336U CN03237533U CN2657020Y CN 2657020 Y CN2657020 Y CN 2657020Y CN U032375336 U CNU032375336 U CN U032375336U CN 03237533 U CN03237533 U CN 03237533U CN 2657020 Y CN2657020 Y CN 2657020Y
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- optical lens
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- refractive index
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Abstract
The utility model discloses a high transmittance optical lens. The optical lens of the utility model is an optical thin film which has a layer of multiple pore structure on the surface of a glass substrate, and the diameter of the pore is 10 to 100 nanometers. The preparation method of the optical lens is that: polystyrene is mixed with polymethyl methacrylate by the mass ratio from50:50 to 5:59, which is then dissolved in aromatic hydrocarbon solvent or tetrahydrofuran. The solution is coated on the pre-treated glass substrate in a spin coating method, and the spin-coated substrate is dried then soaked in cyclohexane solution or cyclohexanone solution, and then the soaked substrate is dried to make the high transmittance optical lens, the transmittance of which can reach 96% in the visible light range. The preparation method is simple and can prepare optical film with lower refractive index, and can be applied to the design and production of components of optical thin film of transmission increasing, reflection increasing and narrowband filtering, and will substantially simplify the process of design and production and reduce the production cost.
Description
Technical field
The utility model relates to a kind of high permeability optical mirror slip.
Background technology
Know that by the Fresnel theorem light all can reflect on the interphase of medium.Optical lens all is indispensable ingredient in most optical system, and the many more light of lens number are owing to the loss that reflection causes is just big more in the light path.Therefore anti-reflection film often will be plated in the optical lens surface.In the design of anti-reflection film people to seek refractive index low always, and a series of low refractive index film materials that can be adjustable within the specific limits.The refractive index of 100% single layer anti reflective coating must satisfy in theory
N wherein
0Be the refractive index of air, n
sRefractive index for substrate.Using maximum substrates is glass material or transparent organic material, and their refractive index about 1.5, is about 1.22 with regard to the refractive index that requires anti-reflection film therefore in theory generally, and just requires to have one group of n more for broad-band transparence-increased film
0To n
sBetween the low refractive index film that can change.And minimum now a kind of dielectric material is magnesium fluoride (MgF
2), its refractive index has only 1.35, so it is that designing technique reaches these conditions that traditional anti-reflection film is taked large-scale film, its anti-reflection film system of high permeability optical mirror slip that a common performance is good can reach tens layers even layer up to a hundred, so traditional high permeability optical mirror slip preparation technology is quite complicated, cost is higher relatively.For example, application number: 01139082.4, name is called the patented claim of " super narrow bandpass optical film filter and thicknesses of layers production method ".
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part, a kind of high permeability optical mirror slip is provided, this optical mirror slip is the optical thin film that one deck multi-pore structure is arranged on glass substrate surface, and the optical thin film of this multi-pore structure can reach lower refractive index value.This high permeability optical mirror slip not only has higher transmittance at visible-range, and the preparation method is simple, and cost is lower.
For achieving the above object, the technical solution adopted in the utility model is: a kind of high permeability optical mirror slip, comprise glass substrate, and one deck optical thin film is arranged on glass substrate surface, this film is a multi-pore structure, pore diameter is 10～100 nanometers.
A kind of method for preparing above-mentioned high permeability optical mirror slip comprises:
(1) with glass substrate through 150 ℃～200 ℃ high temperature, the heat treated of 20～60 minutes time;
(2) weight-average molecular weight is mixed in 10kg/mol～100kg/mol polystyrene and poly-methyl-prop diluted acid formicester, its mass ratio is 50: 50～5: 95;
(3) said mixture is dissolved in aromatic hydrocarbon solvent or the tetrahydrofuran, the mass ratio of solute and solvent is 1: 20～1: 40, fully stirs;
(4) above-mentioned solution is spin-coated on the substrate of handling 1500～4000 rev/mins of spin speed, 20～60 seconds spin coating time;
(5) above-mentioned spin coating is good substrate is dried 70 ℃～200 ℃ of baking temperatures, 2～8 hours drying times;
(6) to put into temperature be that 40 ℃～70 ℃ cyclohexane solution or cyclohexanone solution soaks soak time 1～10 minute for substrate that above-mentioned drying is good;
(7) with above-mentioned soaked substrate oven dry, 70 ℃～200 ℃ of baking temperatures, obtain the high permeability optical mirror slip at 2～8 hours drying times.
Advantage of the present utility model is:
1. high permeability optical mirror slip of the present utility model has higher transmittance, can reach more than 96% in visible-range.
2. preparation method of the present utility model is simple, and cost is lower.
3. preparation method of the present utility model can prepare refractive index and be lower than 1.35 multi-pore structure optical thin film.So in the design and fabrication of the devices of optical film such as that its method can be applied in is anti-reflection, increase anti-, narrow-band filtering, it is the process of simplified design and making greatly, reduces cost.
Description of drawings
Fig. 1 is the structural representation of the utility model high permeability optical mirror slip.
Fig. 2 is that the grade of porous crack film is put the graph of a relation between refractive index and the porosity.
Fig. 3 (a)～Fig. 3 (e) is high permeability optical mirror slip preparation method's a process flow diagram.
Embodiment
As shown in Figure 1,2 is glass substrate, and one deck optical thin film 1 is arranged on glass substrate 2, and this film is a multi-pore structure, and pore diameter is 10～100 nanometers.Film 1 thickness can be in 100～200 nanometers.The film of this multi-pore structure can guarantee that film has less consumption, reaches the general conventional film low-refraction that is beyond one's reach, thereby obtains higher transmittance.The porosity of known multi-pore structure film utilizes Finite Difference-Time Domain branch (FDTD) algorithm can calculate the equivalent index of thin film value, and result of calculation as shown in Figure 2.As can be seen from Figure, the equivalent refractive index of multi-pore structure film is big or small closely-related with porosity, as long as accurately the size of control porosity just can reach the accurate adjustment of refractive index.The size of porosity is again that the quality when changing polystyrene and poly-methyl-prop diluted acid formicester and mix recently realizes
A kind of method for preparing above-mentioned high permeability optical mirror slip
Embodiment 1
Glass substrate 2 is through 180 ℃ of high temperature, the heat treated of 30 minutes time.Choosing polystyrene (PS) weight-average molecular weight is that 10.3kg/mol and polymethylmethacrylate (PMMA) weight-average molecular weight are 10.6kg/mol.The mass ratio of these two kinds of macromolecular materials by 3: 7 mixed.And then be dissolved in tetrahydrofuran (THF) with 1: 20 mass ratio, fully stir.Mixed solvent after fully stirring is poured on the substrate of handling well 2, shown in Fig. 3 (a).Substrate is placed on spin coating on the objective table of equal glue machine, 2000 rev/mins of rotating speeds, 40 seconds spin coating time is shown in Fig. 3 (b).It is dry that the intact substrate of spin coating is put into vacuum drying oven, 100 ℃ of temperature, and 6 hours time, shown in Fig. 3 (c), 3 is polystyrene among the figure, 4 is polymethyl methacrylate.Polystyrene and polymethylmethacrylate two-phase were separated when this step finished, because the mass ratio of polymethylmethacrylate and polystyrene is 7: 3, so what at this moment polymethylmethacrylate formed is external phase, and polystyrene forms is discrete phase less on the form, and this also is the precondition that forms the very little porous crack film in aperture.It is that soak time is 5 minutes, shown in Fig. 3 (d) in 45 ℃ the cyclohexane solution that dry intact glass substrate is dipped into temperature again.This step is with the effect of the selectivity absorption of cyclohexane solution p-poly-phenyl ethene and polymethylmethacrylate, reaches the purpose of removing the polystyrene phase.At last substrate is put into vacuum drying oven and be heated to 100 ℃ of high temperature, 6 hours time was carried out drying.Obtain the high permeability optical mirror slip, shown in Fig. 3 (e), the mean transmissivity of this optical mirror slip visible-range is 95.3%, and the thickness of this glass substrate surface porous crack film is 150 nanometers, and pore diameter is about 80 nanometers, and refractive index is 1.32.
Embodiment 2
The mass ratio of polystyrene and polymethyl methacrylate is 5: 95, all the other are with embodiment 1, obtain the high permeability optical mirror slip at last, the mean transmissivity of this optical mirror slip visible-range is 94.5%, the pore diameter of this glass substrate surface porous crack film is about 20 nanometers, and refractive index is 1.44.
The mass ratio of polystyrene and polymethyl methacrylate is 40: 60, all the other are with embodiment 1, obtain the high permeability optical mirror slip at last, the mean transmissivity of this optical mirror slip visible-range is 96.5%, the pore diameter of this glass substrate surface porous crack film is about 90 nanometers, and refractive index is 1.30.
Embodiment 4
Choosing polystyrene (PS) weight-average molecular weight is that 96.3kg/mol and polymethylmethacrylate (PMMA) weight-average molecular weight are 98.5kg/mol.The mass ratio of these two kinds of macromolecular materials by 4: 6 mixed.And then be dissolved in the aromatic hydrocarbon solvent with 1: 40 mass ratio, such as chlorobenzene, benzene, toluene, fully stir.Glass substrate 2 before the spin coating will be through 150 ℃ of high temperature, the heat treated of 50 minutes time.Mixed solvent after fully stirring on the substrate of handling well, is begun spin coating, 3000 rev/mins of rotating speeds, 60 seconds spin coating time.It is dry that the intact substrate of spin coating is put into baking oven, 180 ℃ of temperature, 8 hours time.Polystyrene and polymethylmethacrylate two-phase were separated when this step finished.It is that soak time is 8 minutes, reaches the purpose of removing the polystyrene phase in 60 ℃ the cyclohexanone solution that dry intact substrate is dipped into temperature again.At last substrate is put into baking oven for heating to 180 ℃ high temperature, 8 hours time was carried out drying.Obtain the high permeability optical mirror slip at last, the mean transmissivity of this optical mirror slip visible-range is 94.3%, and the thickness of this glass substrate surface porous crack film is 110 nanometers, and pore diameter is about 100 nanometers, and refractive index is 1.33.
The mass ratio of polystyrene and polymethyl methacrylate is 20: 80, all the other are with embodiment 4, obtain the high permeability optical mirror slip at last, the mean transmissivity of this optical mirror slip visible-range is 94.0%, the pore diameter of this glass substrate surface porous crack film is about 90 nanometers, and refractive index is 1.38.
Embodiment 6
The mass ratio of polystyrene and polymethyl methacrylate is 5: 95, all the other are with embodiment 4, obtain the high permeability optical mirror slip at last, the mean transmissivity of this optical mirror slip visible-range is 93.5%, the pore diameter of this glass substrate surface porous crack film is about 50 nanometers, and refractive index is 1.43.
Claims (1)
1. a high permeability optical mirror slip comprises glass substrate, and one deck optical thin film is arranged on glass substrate surface, it is characterized in that: this optical thin film (1) is a multi-pore structure, and pore diameter is 10～100 nanometers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032375336U CN2657020Y (en) | 2003-09-28 | 2003-09-28 | High transmissivity optical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032375336U CN2657020Y (en) | 2003-09-28 | 2003-09-28 | High transmissivity optical lens |
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| Publication Number | Publication Date |
|---|---|
| CN2657020Y true CN2657020Y (en) | 2004-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032375336U Expired - Lifetime CN2657020Y (en) | 2003-09-28 | 2003-09-28 | High transmissivity optical lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967947A (en) * | 2012-10-30 | 2013-03-13 | 丁鹏飞 | Manufacturing method of glasses lens film layer |
-
2003
- 2003-09-28 CN CNU032375336U patent/CN2657020Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967947A (en) * | 2012-10-30 | 2013-03-13 | 丁鹏飞 | Manufacturing method of glasses lens film layer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20060329 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |