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Method for controlling spectrum of narrow-band filter

A narrow-band filter and spectrum technology, which is applied in the field of regulation and control of the narrow-band filter spectrum, to achieve the effect of improving the qualified rate of finished products

Active Publication Date: 2020-02-25
TIANJIN JINHANG INST OF TECH PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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[0004] In summary, there is no report on the method for spectral regulation of narrow-band filters.

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  • Method for controlling spectrum of narrow-band filter
  • Method for controlling spectrum of narrow-band filter
  • Method for controlling spectrum of narrow-band filter

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Embodiment Construction

[0031] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] The invention provides a method for regulating and controlling the spectrum of a narrow-band filter, comprising the following steps:

[0033] 1) Firstly, ion beam sputtering deposition technology is selected to prepare narrow-band filters on fused silica or glass substrates, with a center wavelength of λ i , the unit is nm, the bandwidth is D j , the unit is nm, where λ i The range is 300nm-2000nm, D j The range is 1-100nm.

[0034] 2) The spectrum of the prepared narrow-band filter is tested by a spectrophotometer, and the central wavelength is λ 1 , the bandwidth is D 1 ;

[0035] 3) Select heat treatment process parameters, and carry out heat treatment to narrow-band filter, heat treatment temperature i...

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Abstract

The invention relates to a method for controlling the spectrum of a narrow-band filter, and belongs to the technical field of optical films. The method for controlling the spectrum of the narrow bandfilter designed by the invention can effectively change the wavelength position and waveform of the spectrum of the narrow-band filter by using a high-temperature heat treatment method and adjusting the heat treatment process parameters. In the implementation process, the spectral position and shape of the narrow-band filter can be effectively adjusted by preparing a wide-cut narrow-band filter film on a K9 or quartz substrate, performing heat treatment on the prepared filter, and changing the heat treatment time and heat treatment temperature. The results show that the method can shift the spectral position of the filter to adjust to a position that meets the requirements, thereby greatly improving the yield rate of the narrow-band filter, and having an important effect on the preparationof the narrow-band filter.

Description

technical field [0001] The invention belongs to the technical field of optical thin films, and in particular relates to a method for regulating and controlling the spectrum of a narrow-band filter. Background technique [0002] With the rapid development of optical systems, narrow-band filters have become an important research content in the field of optical thin films. As a device for filtering and selecting spectral lines, narrowband filters are widely used in laser technology, optical communication technology, high-resolution imaging, lidar, satellite remote sensing detection, etc., especially in high-resolution imaging systems. important. At home and abroad, the research on narrow-band filters is highly valued. Efforts to expand cut-off wavelength, narrow linewidth, reduce non-uniformity, improve peak transmittance and reliability are still going on, and become the most active topic in the field of optical thin films. one. [0003] In the application of high-precision...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20G01J3/00G01M11/02
CPCG02B5/20G01J3/00G01M11/02
Inventor 姜玉刚陈丹刘华松姜承慧刘丹丹
Owner TIANJIN JINHANG INST OF TECH PHYSICS
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