Long Wave Filters - 15 micron narrowband filters

Citation

盛勇 (Shèng Yǒng) (译 [yì], Translator). (Year Unknown). 长 波 滤 光 片-15微米窄带滤光片 [Long Wave Filters- 15 micron narrowband filters]

Keywords

• 长波滤光片 / Long wave filter
• 窄带滤光片 / Narrowband filter
• 15微米 / 15 micron
• 多层膜干涉滤光片 / Multilayer film interference filter
• 光学性质 / Optical properties
• 带通滤光片 / Bandpass filter
• 低通滤光片 / Low-pass filter
• 高真空设备 / High vacuum equipment
• 反射式监控系统 / Reflective monitoring system
• 基片温度 / Substrate temperature
• 法布里-珀罗滤光片 / Fabry-Pérot filter
• 双半波滤光片 / Double half-wave filter
• 间隔层 / Spacer layer
• 四次反射率极值控制法 / Four-reflection-extrema control method
• 吸收系数 / Absorption coefficient

Brief

This article excerpt details the research, design, fabrication methods, and challenges associated with developing 15-micron narrowband infrared filters for applications specified by a US Air Force contract, involving material selection, deposition techniques, equipment used, and performance testing.

Summary

This article excerpt describes the research and development of 15-micron narrowband infrared filters involving material selection (like ZnS and PbTe), precise vacuum deposition techniques, and addressing challenges like film thickness control, uniformity, and environmental stability to meet the specifications of a US Air Force contract for applications such as radiometers. The work included designing and testing different filter types and developing a rotating evaporation source system for improved manufacturing.

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