Research on Wide Cutoff Long-Wave Infrared Bandpass Filters
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Citation
叶自煌 (Ye Zihuang), 王多书 (Wang Duoshu), 张佰森 (Zhang Baisen), 陈 寿 (Chen Shou), 马 锋 (Ma Feng), 盖志刚 (Gai Zhigang). 宽截止长波红外带通滤光片的研制 (Research on Wide Cutoff Long-Wave Infrared Bandpass Filters) [J]. 真空科学与技术学报 (Journal of Vacuum Science and Technology), 2012, 32(增刊): [No page numbers provided in the excerpts].
Keywords
- 宽截止长波红外带通滤光片 / Wide cutoff long-wave infrared bandpass filter
- 空间应用 / Space application/used in space
- 高平均透射率 / High average transmittance
- 深截止 / Deep cutoff/suppression
- 小波纹系数 / Small ripple coefficient
- 复杂环境条件 / Complex environmental conditions
- 高稳定性 / High stability
- 高可靠性 / High reliability
- 设计原则 / Design principles
- 设计方法 / Design method
- 会聚光红外光学系统 / Converging beam infrared optical system
- 等离子体辅助沉积工艺 / Plasma-assisted deposition technology/process
- 膜层显微结构 / Microstructure of film layers
- 残余应力消除 / Residual stress elimination
- 滤光片 / Filter
- 长波红外 / Long-wave infrared
- 光学系统 / Optical system
- 镀制 / Coating/Preparation/Fabrication
- 空间光学遥感系统 / Space optical remote sensing system
- 红外相机 / Infrared camera
- 多光谱成像仪 / Multispectral imager
- 对地成像观测 / Earth imaging observation
- 光谱分析监测 / Spectral analysis monitoring
- 长波通膜系 / Long-wave pass filter film system
- 短波通膜系 / Short-wave pass filter film system
- 自动优化法 / Automatic optimization method
- 解析法 / Analytical method
- 膜层控制精度 / Film layer control accuracy
- 折射率 / Refractive index
- 截止带宽度 / Cutoff band width
- 消次峰膜系 / Secondary peak suppression film system
- 通带内波纹 / In-band ripple
Brief
This article details the design and fabrication of wide-cutoff long-wave infrared bandpass filters for space applications, emphasizing the design principles, methods utilizing converging beam infrared optics, and plasma-assisted deposition to achieve high average transmittance, deep suppression in the stop bands, and good environmental stability.
Summary
This article details the design and fabrication of wide-cutoff long-wave infrared bandpass filters specifically for space applications. It highlights the design principles employed to achieve high average transmittance and deep suppression in the stop bands. The study emphasizes the successful use of a "converging beam infrared optical system" for accurate film thickness monitoring and a plasma-assisted deposition process to improve the microstructure and environmental stability of the filter's thin film layers. The resulting filters are designed to meet the demanding requirements of spaceborne optical systems.
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