IR Narrow Bandpass Optical Filter 808nm For Infrared Thermometer

IR narrow bandpass optical filter 808nm selectively transmits a portion of the spectrum(750~1000nm) while rejecting all other wavelengths. The filters are ideal for various applications, such as environmental monitoring, safety system, hot imaging, fluorescence microscopy, FLIR, and clinical chemistry.

Our Infrared Bandpass Filters provide superior transmission and exceptional rejection in a specific bandwidth, while a single substrate design ensures user-friendly use, even in harsh conditions. Our factory, with advanced technology, non-dust polishing workshops, and stringent quality control processes, ensures efficient generation and high-quality optical filters at reasonable prices.

Features

- Ultra-narrowband

- High level of transmission rate

- High contrast

- Hard durability

- Stable environmental coating

- ISO9001, ROHS certified

Parameters

Spectrum transmission curve

Applications

IR 808nm bandpass filters are extensively used in infrared gas analyzers, infrared detectors, infrared communication products, security camera, night vision products, etc.

- Monitor

- Infrared curtain wall products

- Infrared mirrors

- Faucet

Why infrared thermal imaging and infrared thermometer glass must use germanium glass material?

Germanium glass, used on the window of an infrared thermometer, has sound-light transmission performance at 2-16um(mid-to-far light). Its chemical properties are stable---less likely to react with metal oxides, acidic substances, air, and water. In contrast, ordinary optical glass has extremely low transmittance in these wavelength bands, making it difficult to achieve.

Coating an optical film on IR narrow bandpass optical filter 808nm germanium glass can significantly increase its transmittance and reduce the surface's reflectivity. However, it is impervious to visible light.

We can also use silicon crystals instead of germanium glass in some thermal imagers, but its working band is narrower. Silicon (Si) single crystal has good light transmission performance in the 1-7μm band and 30-300μm far-infrared band, a feature that other infrared optical materials do not have. It is usually used for 3-5μm mid-wave infrared optical windows and optical filter substrates. Due to the material's good thermal conductivity and low density, it is common to make laser mirrors or infrared temperature measurements and optical lenses.

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