BP3400/120K Filter
- CWL
- 3420 nm
- HW
- 132 nm
- Cuton 5%
- 3290 nm
- Cutoff 5%
- 3545 nm
- Tpeak
- 91.06%
- Tavg
- 84.53%
- Blocking
- < 0.13% (1100-11000 nm)
- Substrate
- Silicon
Precision bandpass and cutoff filters for infrared sensing, scientific instruments, industrial inspection, laser systems, and advanced optical systems.
Our product portfolio covers near-infrared, mid-wave infrared, and long-wave infrared applications, with flexible customization for wavelength, bandwidth, substrate, blocking depth, and package dimensions.

Quality is built into design and manufacturing, with process control from raw materials through production and final inspection.
Class 10,000 cleanroom production and Class 100 workstation capability.
Spectral measurement capability for optical filter verification.
Environmental testing for stability under demanding operating conditions.




Jiangxi Sixty Nine Optoelectronics Technology Co., Ltd. specializes in the research, development, and manufacturing of high-performance infrared optical filters.
Located in Shangrao, Jiangxi Province, the company leverages more than 30 years of industry experience from its founding team to deliver advanced infrared optical solutions to customers worldwide.

Whether you need a standard infrared filter or a customized optical solution, our team can support your wavelength, bandwidth, substrate, size, blocking, and reliability requirements.
Take the first step by contacting us, and we will help you evaluate the right filter solution for your application.
Room 101, No. 5 Songjiang Zhiguang, Chuanggu 1st Road, Shangrao Economic and Technological Development Zone, Jiangxi Province, China
Email: sixty_nineirf@163.com
Hotline: +86 180 210 261 98