CN209387906U

CN209387906U - Depolarized Amici prism

Info

Publication number: CN209387906U
Application number: CN201821853880.7U
Authority: CN
Inventors: 汤兆胜; 罗新华
Original assignee: Jiangxi Zhaojiu Photoelectric Technology Co Ltd
Current assignee: Jiangxi Zhaojiu Photoelectric Technology Co Ltd
Priority date: 2018-11-12
Filing date: 2018-11-12
Publication date: 2019-09-13
Anticipated expiration: 2028-11-12

Abstract

The utility model provides a kind of depolarized Amici prism, including at least two pieces of prism substrates, depolarized spectro-film is coated between two pieces of prism substrates, the depolarized spectro-film includes the dielectric layer for having the metal layer of absorption characteristic and being plated on the layer on surface of metal, and bonding enhancement layer is coated between the dielectric layer and the prism substrate.The utility model solves the problems, such as that existing Amici prism causes spectro-film that cannot place for a long time due to its film adhesion and difference of hardness, and further increases technique preparation quality, reduces production cost.

Description

Depolarized Amici prism

Technical field

The utility model relates to technical field of optical coating, and in particular to a kind of depolarized Amici prism.

Background technique

Depolarized Amici prism refers to a cube prism, it is in specified use wavelength band, to different polarization states Incident light have close to identical dichroism, i.e., Amici prism insensitive to the polarization state of incident light.This element exists The fields such as interferometer, Medical Instruments and theodolite are widely used.

As depicted in figs. 1 and 2, depolarized Amici prism is made of two and half cubes, wherein one and half cube 1a's Inclined-plane is coated with depolarized spectro-film 9a, then, with substrate of glass refractive index close to equal transparent glue by two and half cubes 1a is glued together, after being solidified with ultraviolet light, obtains a complete depolarized Amici prism.

On the basis of Fig. 1 and Fig. 2, when be related to broadband it is depolarized when, need to have with metallic silver or silicon etc. absorb it is special For the material of property as depolarized material, the material that depolarized spectro-film is used has ZnS, Al₂O₃、Ag、Si、TiO₂、SiO₂Equal materials.It is right When depolarized more demanding, that is, when requiring the dichroism difference requirements very little of different polarization states, metallic silver must be selected to make For coating materials, and accordingly select ZnS, Al₂O₃Coating materials is matched as medium.Further, vacuum coating is carried out in deposited by electron beam evaporation When, due to there is metallic silver to participate in plated film, silver is easy to aoxidize at high temperature.For the oxidation for preventing silver, half cube prism is being plated It to be in normal temperature state when film, cannot heat, generally the coating process under 25 DEG C or so, this temperature is also referred to as cold plating.Cause This, deielectric-coating ZnS and Al₂O₃Can only be coated at normal temperature.

However, this cold depositing process coats the film adhesion come and hardness is bad, surface is during wiped clean It is easy to scratch, this results in needing to carry out glued processing at once after having plated depolarized spectro-film.If being placed on of long duration in atmospheric environment , after having adsorbed the steam in air, film layer is possible to become more insecure, and metallic silver layer can be also oxidized.These factors The dichroism of Amici prism will be made to be deteriorated, or even lose due performance completely.

In prior art, as shown in Figure 3 and Figure 4, the membrane system of depolarized spectro-film includes " glass/ZnS/Ag/ZnS/ glass Glass " or " glass/ZnS/Ag/ZnS/Al₂O₃/ glass ".Just with " glass/ZnS/Ag/ZnS/Al₂O₃For/glass ", cold When plating, the binding force of ZnS film layer 2a and substrate glasses 1a, Al₂O₃Binding force and Al between film layer 3a and ZnS film layer 2a₂O₃ The consistency and hardness of film layer 3a is not fine, thus needs depolarized spectro-film fast sealing, and this glued procedure is By being accomplished manually, one day workload is limited, if once producing a large amount of depolarized spectro-film, and cannot be glued in time, Depolarized spectro-film would be possible to scrap, this is just added significantly to the manufacturing cost of reality.If depolarized spectro-film can be allowed to exist for a long time It is stored in air, so that it may depolarized spectro-film is produced in batches, so that production cost be made to substantially reduce.

Utility model content

The purpose of this utility model is to overcome deficiencies in the prior art, provide a kind of depolarized Amici prism, with solution Certainly existing Amici prism causes spectro-film that cannot place problem for a long time due to its film adhesion and difference of hardness.

In order to achieve the above object, being achieved through the following technical solutions:

The utility model provides a kind of depolarized Amici prism, including at least two pieces of prism substrates, two pieces of prisms first It is coated with depolarized spectro-film between substrate, the depolarized spectro-film includes having the metal layer of absorption characteristic and being plated on the metal The dielectric layer of layer surface is coated with bonding enhancement layer between the dielectric layer and the prism substrate.

Preferably, the bonding enhancement layer includes prime coat and transition zone, and the transition zone is plated on the dielectric layer Surface, the prime coat are plated on the surface of the transition zone for bonding with the prism substrate.

Preferably, the prime coat is SiO₂Film layer, the transition zone are Al₂O₃Film layer.

Preferably, described to there is bonding enhancement layer to be also coated with waterproof protective layer outside.

Preferably, the waterproof protective layer is SiO₂Film layer.

Preferably, every piece of prism substrate is triangular prism or right-angle prism, and the depolarized spectro-film is plated on two pieces of institutes It states between any two contact surface of prism substrate.

Beneficial effect provided by the utility model includes:

1) by adding prime coat and transition zone outside existing metal layer and dielectric layer, to significantly improve between film layer Binding force/adhesive force；

2) by adding protective layer in outermost layer to effectively prevent steam to enter film layer；

3) by introducing Ion Aided Film Coating Technique, the binding force and densification between film layer and substrate of glass are further increased Degree.

Detailed description of the invention

Fig. 1 is the schematic perspective view under its incision state of existing depolarized Amici prism；

Fig. 2 is corresponding to the status diagram after the gluing of Fig. 1；

Fig. 3 is the cross-sectional structure schematic diagram corresponding to its " glass/ZnS/Ag/ZnS/ glass " membrane system of Fig. 2；

Fig. 4 is corresponding to its " glass/ZnS/Ag/ZnS/Al of Fig. 2₂O₃The cross-sectional structure schematic diagram of/glass " membrane system；

Fig. 5 is the cross-sectional structure schematic diagram before the depolarized Amici prism of the utility model is glued；

Fig. 6 is corresponding to the status diagram after its gluing of Fig. 5.

Specific embodiment

The utility model is described in detail with reference to the accompanying drawing:

As shown in Figure 5 and Figure 6, the utility model discloses a kind of depolarized Amici prism, including at least two pieces of prism bases first Bottom 1 is coated with depolarized spectro-film between two pieces of prism substrates 1, and the depolarized spectro-film includes the metal with absorption characteristic Layer 2 and the dielectric layer 3 for being plated on 2 outer surface of metal layer, wherein be coated between the dielectric layer 3 and the prism substrate 1 Bond enhancement layer.

Specifically, the bonding enhancement layer includes prime coat 4 and transition zone 5, and the transition zone 5 is plated on the dielectric layer 3 outer surface, the prime coat 4 are plated on the outer surface of the transition zone 5 for bonding with the prism substrate 1.It is described have it is viscous The outer surface of knot enhancement layer is also coated with waterproof protective layer 6.

More preferably, the prime coat 4 is SiO₂Film layer, the transition zone 5 are Al₂O₃Film layer.The waterproof protective layer 6 be SiO₂Film layer.Metal layer 2 is Ag film layer, and dielectric layer 3 is ZnS film layer.Every piece of prism substrate 1 is for triangular prism or directly Angle prism, between the contact surface that any two that the depolarized spectro-film is plated on two pieces of prism substrates 1 need to bond.

After with above structure feature, a kind of depolarized Amici prism preparation process is also disclosed in the utility model, this is practical Novel above-mentioned depolarized Amici prism can also be manufactured by the preparation process, in conjunction with shown in Fig. 5 and Fig. 6, the depolarized Amici prism system Standby technique specifically includes the following steps:

A. as shown in figure 5, providing at least two pieces of prism substrates 1, wherein any two of two pieces of prism substrates 1 connect Metal layer 2 (Ag film) and dielectric layer 3 (ZnS film) are coated between contacting surface, this two layers is that depolarized spectro-film is plated in the prior art Some layers；

B. it is the binding force for improving film layer and substrate of glass 1, introduces SiO₂Coating materials is as prime coat 4, specific practice, The SiO of 20~80nm thickness is coated in substrate of glass 1₂Film layer is plated on the glass of left half to form the prime coat 4 Glass substrate 1；

C. due to SiO₂Binding force between coating materials 4 and ZnS film layer 3 is bad, in SiO₂Between film layer 4 and ZnS film layer 3 again It is coated with transition zone 5, preferably uses Al₂O₃Film layer is as the transition zone 5；So far, by step b and c, in the appearance of depolarized spectro-film Face forms bonding enhancement layer；

D. add the SiO of plating 40~200nm thickness in the outermost surface of membrane system₂Film layer prevents the steam from entering film layer, To form protective layer 6；

E. when executing step b to d, it is preferably introduced into Ion Aided Film Coating Technique, is being coated with 4 (SiO of prime coat₂Film) and Ion beaming auxiliary filming is carried out using End-Hall ion source when protective layer 6, to further increase between film layer and substrate of glass 1 Binding force and consistency；

F. as shown in fig. 6, right half substrate of glass 1 to be bonded in the SiO of outermost surface by cementing layer 7₂Waterproof is protected Sheath 6.

All preparation sections are completed in solidification to be glued, form the depolarized Amici prism of cube.

After completing above-mentioned implementation process, the utility model following advantages should be able to be embodied:

After the coating process of the utility model, depolarized spectro-film can place any time in air, and Film surface is very hard, withstands the wiping of cleansing tissue, will not cause the scuffing on surface.This production to depolarized Amici prism is improved Efficiency has great promotion.Through actual verification, the depolarized light splitting of 200 25.4X25.4X25.4 sizes can only be produced within originally one week Cube can produce 500 at present, and even more, production plan is not restricted by gluing time, and that produces disappears Inclined spectro-film can carry out gluing with following the prescribed order.Reflect, the technical solution of the utility model improves technique preparation quality, drop Low production cost.

The embodiments of the present invention are only used for being illustrated the utility model, do not constitute to scope of the claims Limitation, other substantially equivalent substitutions that those skilled in that art are contemplated that, in the protection model of the utility model In enclosing.

Claims

1. a kind of depolarized Amici prism, which is characterized in that including at least two pieces of prism substrates, plated between two pieces of prism substrates There is depolarized spectro-film, the depolarized spectro-film includes Jie for having the metal layer of absorption characteristic and being plated on the layer on surface of metal Matter layer is coated with bonding enhancement layer between the dielectric layer and the prism substrate.

2. depolarized Amici prism according to claim 1, which is characterized in that the bonding enhancement layer include prime coat and Transition zone, the transition zone are plated on the surface of the dielectric layer, the prime coat be plated on the surface of the transition zone for institute State prism substrate bonding.

3. depolarized Amici prism according to claim 2, which is characterized in that the prime coat is SiO₂Film layer, the transition Layer is Al₂O₃Film layer.

4. depolarized Amici prism according to any one of claims 1 to 3, which is characterized in that the table for having bonding enhancement layer Face is also coated with waterproof protective layer.

5. depolarized Amici prism according to claim 4, which is characterized in that the waterproof protective layer is SiO₂Film layer.

6. depolarized Amici prism according to claim 1, which is characterized in that every piece of prism substrate be triangular prism or Right-angle prism, the depolarized spectro-film are plated between any two contact surface of two pieces of prism substrates.