Study and Fabrication of Broad Band-pass Filters in Infrared Therapy Apparatus

Citation

刘冬梅 (LIU Dong-mei), 刘爽 (LIU Shuang), 付秀华 (FU Xiu-hua), 张静 (ZHANG Jing), & 何松霖 (HE Song-lin). (2015). 红外线治疗仪中宽波段带通滤光片的研究 (Study and Fabrication of Broad Band-pass Filters in Infrared Therapy Apparatus). 光子学报 (ACTA PHOTONICA SINICA), 44(3), 331001-1-331001-6. https://doi.org/10.3788/gzxb20154403.0331001.

Keywords

• 红外线治疗仪 (Infrared therapy apparatus
• 宽波段带通滤光片 (Wide band-pass filter
• 选择性滤波 (Selective filtering
• 安全使用性能 (Safety performance
• Ti₃O₅
• SiO₂
• 电子束加热蒸发 / Electron beam evaporation
• 离子辅助淀积技术 / Ion-assisted deposition technique
• 石英晶控控制法 / Quartz crystal monitoring method
• 膜系设计 / Film system design
• 拆分技术要求 / Splitting technical requirements
• 双面镀制 / Double-sided coating
• 高低折射率材料 / High and low refractive index materials
• 透过率 / Transmittance
• 截止 / Cut-off

Brief

This article discusses the research and fabrication of a wide band-pass filter for infrared therapy devices, designed to selectively filter light and improve safety by allowing high transmittance in the 600-1200nm range while strongly blocking light in the 300-550nm and 1270-2000nm ranges.

Summary

This study details the development of a special filter for infrared therapy devices. To enhance safety, the filter is designed to highly transmit beneficial light (600-1200nm) while strongly blocking potentially harmful light (300-550nm and 1270-2000nm) using a unique double-sided coating approach on a color filter substrate and specific thin-film deposition techniques. The manufactured filter met the required performance standards.

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