BP915-35 Bandpass Filter(CWL=915nm,FWHM=35nm)

BP915-35 Bandpass Filter - ISM Band Near-Infrared Excellence

The BP915-35 bandpass filter delivers exceptional performance at the critical 915nm wavelength, positioned in the Industrial, Scientific, and Medical (ISM) radio band. With a balanced 35nm FWHM bandwidth and OD2 blocking, this filter provides optimal light throughput while maintaining effective spectral selectivity for demanding NIR applications in biomedical imaging, spectroscopy, and industrial sensing.

Key Features

• Center Wavelength (CWL): 915nm - optimized for ISM band and near-infrared applications
• Balanced Bandwidth: 35nm FWHM for excellent light collection efficiency
• Optical Density: OD2 blocking ensures 100:1 rejection of unwanted wavelengths
• High NIR Transmission: Optimized coatings maximize throughput in the near-infrared region
• Premium Quality: Hard-coated surfaces for long-term durability and stability

Applications

Essential for a wide range of near-infrared applications including:

• Biomedical imaging and tissue diagnostics (water absorption window)
• NIR spectroscopy and chemical analysis
• Optical coherence tomography (OCT) systems
• Photodynamic therapy and medical laser applications
• Agricultural monitoring and moisture detection
• Industrial process monitoring and quality control
• 915MHz ISM band optical communication systems
• Semiconductor laser diode filtering and beam cleanup
• Fluorescence imaging with NIR fluorophores

Technical Excellence

The 915nm wavelength occupies a strategic position in the near-infrared spectrum, corresponding to the ISM (Industrial, Scientific, and Medical) radio band and offering unique advantages for biomedical and industrial applications. At this wavelength, tissue penetration is enhanced due to reduced scattering compared to visible light, while water absorption remains moderate, making it ideal for in-vivo imaging and diagnostic applications.

Our BP915-35 filter's 35nm bandwidth strikes an optimal balance between light collection efficiency and spectral selectivity. This bandwidth is particularly well-suited for applications involving NIR LED sources and laser diodes operating in the 900-930nm range, ensuring maximum light capture while maintaining clean spectral isolation.

With OD2 (100:1) blocking performance, this filter effectively rejects visible light and other unwanted wavelengths, ensuring clean NIR signal detection. This blocking is particularly important for biomedical imaging applications where ambient visible light and tissue autofluorescence could interfere with NIR-based measurements.

The 915nm wavelength is widely used in medical applications because it penetrates biological tissue effectively while being absorbed by water at a moderate rate, providing an optimal balance for therapeutic and diagnostic procedures. This wavelength is also commonly used in photodynamic therapy and laser-based medical treatments.

Manufactured using advanced thin-film coating technology, the BP915-35 delivers consistent performance across the entire aperture with minimal transmission variation. The hard-coated surfaces ensure durability in demanding medical, laboratory, and industrial environments, maintaining optical quality through years of continuous use.

The 35nm bandwidth provides excellent compatibility with NIR LED sources and laser diodes, which are commonly used in cost-effective biomedical imaging systems and industrial sensors. This makes the filter ideal for applications where maximum light efficiency is essential for optimal signal-to-noise ratios.

Whether you're developing biomedical imaging systems for tissue diagnostics, conducting NIR spectroscopy for chemical analysis, building optical coherence tomography instruments, or designing industrial process monitoring systems, the BP915-35 provides the perfect balance of spectral selectivity, light throughput, and blocking performance for professional NIR applications. Trust SyronOptics for optical components that deliver medical and research-grade performance.