BP10000-370(10000nm CWL, OD2@400-16000nm, FWHM=370nm) 대역 통과 필터

Industrial Pyrometry & Thermography

• Context: Used in non-contact temperature measurement sensors (pyrometers) for industrial furnaces, power equipment, or glass manufacturing.
• Function: The 10 µm wavelength is ideal for measuring the temperature of objects near room temperature to medium heat (approx. -20°C to 500°C) because the peak thermal emission of these objects shifts into this region. It avoids interference from humidity (water vapor) which absorbs strongly at other LWIR wavelengths.

Recommended Light Sources

• Passive Target Radiation (Blackbody Emission): In this application, there is no external active light source; the target object itself acts as the source by emitting thermal radiation. The advantage is that this passive emission allows for non-contact measurement, while the specific 10 µm wavelength aligns with the peak emission of low-to-medium heat targets (-20°C to 500°C) and avoids signal attenuation from atmospheric humidity.

Gas Spectral Analysis (Reference Channel)

• Context: Used in NDIR (Non-Dispersive Infrared) gas sensors.
• Function: While many gases (like CO₂ at 4.26 µm) have absorption peaks elsewhere, the 10 µm region is often used as a Reference Channel. This band is relatively free of atmospheric absorption, allowing the system to establish a baseline signal intensity to compare against the absorption channel, correcting for light source drift or dust.

Recommended Light Sources

• Broadband IR Emitter (e.g., SiC Globar or MEMS): It provides continuous spectral output that covers both the target gas absorption wavelengths (e.g., 4.26 µm for CO₂) and the 10 µm reference band, ensuring that any fluctuation in source intensity affects both channels equally, which is essential for accurate differential measurement and drift compensation.