CN206887215U - One kind prepares photocathode coating nickel alloy seamless evaporator - Google Patents
One kind prepares photocathode coating nickel alloy seamless evaporator Download PDFInfo
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- CN206887215U CN206887215U CN201720601513.7U CN201720601513U CN206887215U CN 206887215 U CN206887215 U CN 206887215U CN 201720601513 U CN201720601513 U CN 201720601513U CN 206887215 U CN206887215 U CN 206887215U
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- evaporator
- medial portion
- flattened medial
- seamless
- flattened
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Abstract
It the utility model is related to night vision device photoelectricity cathodic coating evaporation field, there is provided one kind prepares photocathode coating nickel alloy seamless evaporator, is that trapezoidal seamless evaporation tube is processed into by section, including flattened medial portion, splendid attire material portion, electrode；There is circular hole at flattened medial portion upper bottom edge or bottom center；Contain material portion and be located at flattened medial portion both ends；Electrode is located at splendid attire side of the material portion away from flattened medial portion；The beneficial effects of the utility model：Processing technology is simple, easily realizes mechanization；During evaporation, it is easy to uniformly and stably generate coating on photocathode, improves the photoelectric conversion rate of twilight image booster photoelectric surface；Requirement prepared by a variety of photocathode coating can be met.
Description
Technical field
Night vision device photoelectricity cathodic coating evaporation coating technique field is the utility model is related to, more particularly to one kind prepares photoelectricity the moon
Pole coating nickel alloy seamless evaporator.
Background technology
Low-light Level Night Vision Technology is to realize photon image-electronic image-photon image with technologies such as vacuum and electron-opticals
Conversion.The natural lights such as low-light level noctilucence, star moonlight, airglow of the low-light level night vision device by receiving the reflection of night target, by it
Be converted into electric signal, then carry out that enhancing amplification is tens of thousands of to electric signal in addition several thousands of times after, then the electric signal of enhancing turned
Change light into, so as to reach scouted, observed, aimed at suitable for naked eyes night, vehicle drive and other battlefield operations.
The core component of low-light level night vision device is twilight image booster, can be deposited out on photocathode uniformity it is good and
The high coating of purity, it is the key problem in technology for the twilight image booster for obtaining high quality.Existing evaporator is due in structure
In the presence of very big defect：Existing evaporator is all with apertured, and this can greatly improve difficulty of processing, accidentally be easy for leak
Powder；It is relatively low to also result in evaporator mechanical property simultaneously, if air pressure is larger in evaporation process, result even in crack extension and
Powder is leaked, this can cause the pollution of unrepairable to photocathode；Steam is also resulted in if gap processing is uneven
Spillover instability, it is uneven to easily cause the plated film being deposited out.
Utility model content
The purpose of this utility model is exactly overcome the deficiencies in the prior art, there is provided one kind prepares photocathode coating nickel
Alloy seamless evaporator, processing technology is simple, easily realizes mechanization, while during evaporator evaporation, be easy to uniformly and stably
The generation evaporation layer on photocathode, improve the photoelectric conversion rate of twilight image booster photoelectric surface.
The utility model one kind prepares photocathode coating nickel alloy seamless evaporator, and the evaporator is ladder by section
The seamless evaporation tube of shape is processed into, including flattened medial portion, splendid attire material portion, electrode；Flattened medial portion center has 1
A diameter of 1.5mm ~ 4.0mm circular hole, the circular hole are located at the one of the trapezoidal bottom in flattened medial portion section or upper bottom edge
Side；Splendid attire material portion quantity is 2, is respectively arranged at the both ends in the flattened medial portion；The number of electrodes is 2,
It is respectively arranged at the splendid attire side of the material portion away from the flattened medial portion；The flattened medial portion, contain material portion, electricity
Extremely it is seamlessly connected to be overall.
Further, the material of the seamless evaporation tube is nichrome.
Further, the trapezoid cross section size of the seamless evaporation tube is：Upper bottom d=1.5 ~ 4.0mm, high h=1.5 ~
4.0mm, base angle θ=30 ° ~ 80 °, tubing thickness t=0.020 ~ 0.050mm；Length L=20 ~ 50mm of every seamless pipe；The circle
A diameter of 1.5 ~ 4.0mm in hole.
Further, the flattened medial minister degree is 3.0 ~ 8.0mm, and 0.3 ~ 2.0mm gap is left in centre, as steaming
The passage that vapour overflows.
Further, the bottom surface in the flattened medial portion and the plane included angle of the electrode are 0-180 degree.
Further, the angle is 0 degree or 90 degree.
The beneficial effects of the utility model are：The processing technology of the evaporator is simple, easily realizes mechanization, while evaporator
During evaporation, it is easy to uniformly and stably generate coating on photocathode, improves the light of twilight image booster photoelectric surface
Optoelectronic conversion ratio.The utility model is ingenious in design, dependable performance, can meet requirement prepared by a variety of photocathode coating.
Brief description of the drawings
Fig. 1 show the flattening plane evaporator floor map parallel with electrode surface.
Fig. 2 show the flattening plane evaporator floor map vertical with electrode surface.
Wherein：1- flattened medials portion, 2- contain material portion, 3- electrodes, 4- circular holes, 5- evaporations material, 6- steam effusion seam.
Embodiment
The utility model specific embodiment is described in detail below in conjunction with specific accompanying drawing.It should be noted that following implementations
Example described in technical characteristic or technical characteristic combination be not construed as it is isolated, they can be mutually combined from
And reach superior technique effect.In the accompanying drawing of following embodiments, the identical label that each accompanying drawing occurs represents identical spy
Sign or part, can be applied in different embodiments.
The utility model embodiment one kind prepares photocathode coating nickel alloy seamless evaporator, and the evaporator is by cutting
Face is that trapezoidal seamless evaporation tube is processed into, including flattened medial portion, splendid attire material portion, electrode；In the flattened medial portion
The heart has 1 a diameter of 1.5mm ~ 4.0mm circular hole, and the circular hole is located at the trapezoidal bottom in flattened medial portion section or upper bottom
The side on side；Splendid attire material portion quantity is 2, is respectively arranged at the both ends in the flattened medial portion；The number of electrodes
For 2, the splendid attire side of the material portion away from the flattened medial portion is respectively arranged at；The flattened medial portion, contain material
Material portion, electrode are seamlessly connected as entirety.
The material of the seamless evaporation tube is nichrome, it is preferred that wherein chromium content is 5 ~ 30 wt.%.It is described seamless
The trapezoid cross section size of evaporation tube is：Upper bottom d=1.5 ~ 4.0mm, high h=1.5 ~ 4.0mm, base angle θ=30 ° ~ 80 °, tubing thickness t=
0.020~0.050mm；Length L=20 ~ 50mm of every seamless pipe；A diameter of 1.5 ~ 4.0mm of the circular hole.
The flattened medial minister degree is 3.0 ~ 8.0mm, and 0.3 ~ 2.0mm gap is left in centre, is overflowed as steam
Passage.
The bottom surface in the flattened medial portion and the plane included angle of the electrode are 0-180 degree.Preferably, the angle is 0
Degree or 90 degree.
A kind of processing method of above-mentioned seamless evaporator, comprises the following steps：
Step 1: seamless evaporation tube center section is flattened：The trapezoidal seamless evaporation tube of nichrome of appropriate length is selected,
At its center hole, it will be flattened by the region that midpoint, length are 3.0 ~ 8.0mm of the center of circle, 0.3 ~ 2.0mm is left among top and bottom
Gap, as steam effusion passage；
Step 2: load evaporation material：The equal evaporation material of gross mass is respectively added at evaporation tube both ends；
Step 3: machined electrode：Both ends remainder, which is all flattened, turns into electrode, electrode surface and the angle in center crush face
Degree is adjusted according to demand, and the evaporator shown in Fig. 1 is obtained when angle is 0 °, when angle is 90 °, that is, is obtained shown in Fig. 2
Evaporator；
Step 4: vacuum evaporation：In two sections of electrified regulations of electrode during vacuum evaporation, evaporation material is opened when reaching certain temperature
Begin to evaporate, obtained steam can escape from reserved center hole, the light being equably vaporized in photo-translating system
Electric face lens surface.
The beneficial effects of the utility model are：The processing technology of the evaporator is simple, easily realizes mechanization, while evaporator
During evaporation, it is easy to uniformly and stably generate coating on photocathode, improves the light of twilight image booster photoelectric surface
Optoelectronic conversion ratio.The utility model is ingenious in design, dependable performance, can meet requirement prepared by a variety of photocathode coating.
Although having been presented for several embodiments of the present utility model herein, those skilled in the art should manage
Solution, in the case where not departing from the utility model spirit, can be changed to the embodiments herein.Above-described embodiment simply shows
Example property, restriction that should not using the embodiments herein as the utility model interest field.
Claims (6)
1. one kind prepares photocathode coating nickel alloy seamless evaporator, it is characterised in that the evaporator is ladder by section
The seamless evaporation tube of shape is processed into, including flattened medial portion, splendid attire material portion, electrode；Flattened medial portion center has 1
A diameter of 1.5mm ~ 4.0mm circular hole, the circular hole are located at the one of the trapezoidal upper bottom edge in flattened medial portion section or bottom
Side；Splendid attire material portion quantity is 2, is respectively arranged at the both ends in the flattened medial portion；The number of electrodes is 2,
It is respectively arranged at the splendid attire side of the material portion away from the flattened medial portion；The flattened medial portion, contain material portion, electricity
Extremely it is seamlessly connected to be overall.
2. evaporator as claimed in claim 1, it is characterised in that the material of the seamless evaporation tube is nichrome.
3. evaporator as claimed in claim 1, it is characterised in that the trapezoid cross section size of the seamless evaporation tube is：Upper bottom d
=1.5 ~ 4.0mm, high h=1.5 ~ 4.0mm, base angle θ=30 ° ~ 80 °, tubing thickness t=0.020 ~ 0.050mm；The length of every seamless pipe
Spend L=20 ~ 50mm；A diameter of 1.5 ~ 4.0mm of the circular hole.
4. evaporator as claimed in claim 1, it is characterised in that the flattened medial minister degree is 3.0 ~ 8.0mm, and centre is stayed
There is 0.3 ~ 2.0mm gap, the passage overflowed as steam.
5. evaporator as claimed in claim 1, it is characterised in that the bottom surface in the flattened medial portion and the plane of the electrode
Angle is 0-180 degree.
6. evaporator as claimed in claim 5, it is characterised in that the angle is 0 degree or 90 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720601513.7U CN206887215U (en) | 2017-05-26 | 2017-05-26 | One kind prepares photocathode coating nickel alloy seamless evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720601513.7U CN206887215U (en) | 2017-05-26 | 2017-05-26 | One kind prepares photocathode coating nickel alloy seamless evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206887215U true CN206887215U (en) | 2018-01-16 |
Family
ID=61320409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720601513.7U Expired - Fee Related CN206887215U (en) | 2017-05-26 | 2017-05-26 | One kind prepares photocathode coating nickel alloy seamless evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206887215U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107058959A (en) * | 2017-05-26 | 2017-08-18 | 北京科技大学 | One kind prepares photocathode coating nickel alloy seamless evaporator and processing method |
-
2017
- 2017-05-26 CN CN201720601513.7U patent/CN206887215U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107058959A (en) * | 2017-05-26 | 2017-08-18 | 北京科技大学 | One kind prepares photocathode coating nickel alloy seamless evaporator and processing method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180116 Termination date: 20180526 |
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| CF01 | Termination of patent right due to non-payment of annual fee |