CN106501892B - A kind of neutrality attenuating filters preparation method - Google Patents
A kind of neutrality attenuating filters preparation method Download PDFInfo
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- CN106501892B CN106501892B CN201611242385.8A CN201611242385A CN106501892B CN 106501892 B CN106501892 B CN 106501892B CN 201611242385 A CN201611242385 A CN 201611242385A CN 106501892 B CN106501892 B CN 106501892B
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- light
- wavelength
- coated
- spectral transmittance
- attenuating filters
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/205—Neutral density filters
Abstract
The invention discloses a kind of new neutral attenuating filters preparation methods, the preparation method is that: firstly, crome metal is coated on the glass substrate, until stopping chromium plating after the transmitance for the light that wavelength is 550nm reaches 1%；Then the W metal being coated with again, when wavelength be 450nm and 650nm light spectral transmittance it is identical, and wavelength be 550nm light spectral transmittance be 0.1% after, stop plating Ni；It is finally coated with metal NiCr, after the spectral transmittance for the light that wavelength is 550nm reaches 0.01%, stops plated film.The deviation of the neutral attenuating filters curve of spectrum within the scope of 400-1000nm prepared by the present processes is less than 0.01%；Its spectra values is accurate, and the data and Theoretical Design data deviation that actual production obtains are less than 0.01%.
Description
Technical field
The present invention relates to optical film technology fields, and in particular to a kind of neutrality attenuating filters preparation method.
Background technique
Neutral attenuating filters are also neutral density mirror, and effect is light of decaying under the premise of guaranteeing spectral neutrality.
This optical filter is non-selective to the attenuation of light, that is to say, that light of the attenuating filters to various different wave lengths
Damping capacity be it is identical, uniform, only play the role of decaying to all light, and the ingredient of spectrum will not be generated
Any influence, therefore can be with the contrast of true reappearance scenery.
Main purpose using neutral attenuating filters is the transmitance in order to reduce light.In photography if light too
It is bright to be difficult to select slower shutter speed shooting, the light into camera lens at this moment can be reduced using neutral attenuating filters,
Photo is shot under shutter that can be slower.For example, the landscape under shooting strong light environment shines, or make under ordinary ray
With the fluids such as time-lapse shooting photo or slow-speed shutter shooting river, waterfall to show the special-effects such as the water flow blurred, all
Need neutral attenuating filters.
The preparation of neutrality attenuating filters is all to control thicknesses of layers using quartz crystal film-thickness monitoring at present, is coated with
Single-layer metal nichrome or nichrome.As shown in Figure 1, this preparation process reaches 0.01% in production transmitance
It is deep when end neutral attenuating filters, coat the optical filter come exist cut-off depth can not accurately control, the curve of spectrum
Tilt the problems such as there are serious colour casts.
Summary of the invention
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of novel pellicle of HUD,
It efficiently solves cut-off depth in the prior art and can not accurately control, curve of spectrum inclination the problems such as there are serious colour casts.
To achieve the above object, the invention adopts the following technical scheme:
A kind of neutrality attenuating filters preparation method, the preparation method is that: firstly, being coated with metal on the glass substrate
Chromium, until stopping chromium plating after the transmitance for the light that wavelength is 550nm reaches 1%；Then it is coated with W metal again, works as wavelength
Spectral transmittance for the light of 450nm and 650nm is identical, and wavelength be 550nm light spectral transmittance be 0.1% with
Afterwards, stop plating Ni；It is finally coated with metal NiCr, after the spectral transmittance for the light that wavelength is 550nm reaches 0.01%, is stopped
Plated film.
The present invention has following advantageous effects:
Pass through the deviation of neutral attenuating filters curve of spectrum within the scope of 400-1000nm prepared by the present processes
Less than 0.01%；Its spectra values is accurate, and the data and Theoretical Design data deviation that actual production obtains are less than 0.01%.
Detailed description of the invention
Fig. 1 is the curve of spectrum of traditional neutral attenuating filters；
Fig. 2 is the curve of spectrum of the neutral attenuating filters of the application.
Specific embodiment
In the following, being made a more thorough explanation with reference to attached drawing to the present invention, shown in the drawings of exemplary implementation of the invention
Example.However, the present invention can be presented as a variety of different forms, it is not construed as the exemplary implementation for being confined to describe here
Example.And these embodiments are to provide, to keep the present invention full and complete, and it will fully convey the scope of the invention to this
The those of ordinary skill in field.
As shown in Fig. 2, the present invention provides a kind of neutral attenuating filters preparation method, should the preparation method comprises the following steps: firstly,
Crome metal is coated on glass substrate, until stopping chromium plating after the transmitance for the light that wavelength is 550nm reaches 1%；Then again
Be coated with W metal, when wavelength be 450nm and 650nm light spectral transmittance it is identical, and wavelength be 550nm light spectrum
After transmitance is 0.1%, stop plating Ni；It is finally coated with metal NiCr, when the spectral transmittance for the light that wavelength is 550nm reaches
After 0.01%, stop plated film.
The deep structure for ending neutral attenuating filters prepared by the present invention is as follows:
Glass | 1% Cr, 0.1% Ni, 0.01% NiCr | Air
Wherein 1%, 0.1%, 0.01% is respectively the transmitance of Cr, Ni, NiCr coating.
In the neutral attenuating filters preparation process of the application, using Beijing with raw Science and Technology Ltd.'s exploitation
The curve of spectrum in Filmonitor BS2030 wideband spectrum monitoring system real-time monitoring coating process.
It is described above simply to illustrate that of the invention, it is understood that the application is not limited to above embodiments, meets
The various variants of inventive concept are within the scope of the present invention.
Claims (1)
1. a kind of neutrality attenuating filters preparation method, which is characterized in that the preparation method is that: firstly, on the glass substrate
It is coated with crome metal, until stopping chromium plating after the transmitance for the light that wavelength is 550nm reaches 1%；Then it is coated with metal again
Ni, when the spectral transmittance for the light that wavelength is 450nm and 650nm is identical, and the spectral transmittance of light that wavelength is 550nm is
After 0.1%, stop plating Ni；Finally be coated with metal NiCr, when wavelength be 550nm light spectral transmittance reach 0.01% with
Afterwards, stop plated film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611242385.8A CN106501892B (en) | 2016-12-29 | 2016-12-29 | A kind of neutrality attenuating filters preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611242385.8A CN106501892B (en) | 2016-12-29 | 2016-12-29 | A kind of neutrality attenuating filters preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106501892A CN106501892A (en) | 2017-03-15 |
| CN106501892B true CN106501892B (en) | 2019-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611242385.8A Active CN106501892B (en) | 2016-12-29 | 2016-12-29 | A kind of neutrality attenuating filters preparation method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111996496B (en) * | 2020-08-28 | 2022-09-30 | 中国电子科技集团公司第四十一研究所 | Preparation method of terahertz attenuation sheet and attenuation characteristic calibration method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09292503A (en) * | 1996-04-25 | 1997-11-11 | Asahi Optical Co Ltd | Beam splitting film, nd filter and beam splitter |
| CN204044387U (en) * | 2014-06-23 | 2014-12-24 | 孙义昌 | A kind of neutral gray scale dim light filter of stratified film and manufacturing installation thereof |
| CN104297833A (en) * | 2014-11-06 | 2015-01-21 | 沈阳仪表科学研究院有限公司 | Low-reflection and neutral-density filter |
| CN105607173A (en) * | 2016-01-07 | 2016-05-25 | 西安工业大学 | Circular radial-gradient neutral density filter and preparation method and apparatus for the same |
-
2016
- 2016-12-29 CN CN201611242385.8A patent/CN106501892B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09292503A (en) * | 1996-04-25 | 1997-11-11 | Asahi Optical Co Ltd | Beam splitting film, nd filter and beam splitter |
| CN204044387U (en) * | 2014-06-23 | 2014-12-24 | 孙义昌 | A kind of neutral gray scale dim light filter of stratified film and manufacturing installation thereof |
| CN104297833A (en) * | 2014-11-06 | 2015-01-21 | 沈阳仪表科学研究院有限公司 | Low-reflection and neutral-density filter |
| CN105607173A (en) * | 2016-01-07 | 2016-05-25 | 西安工业大学 | Circular radial-gradient neutral density filter and preparation method and apparatus for the same |
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| CN106501892A (en) | 2017-03-15 |
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Inventor after: Xu Jiaxuan Inventor after: Zhang Zhiguang Inventor after: Jia Qiuping Inventor after: Fan Wensheng Inventor after: Xu Zhigen Inventor before: Zhang Zhiguang Inventor before: Jia Qiuping Inventor before: Fan Wensheng Inventor before: Xu Zhigen |
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