Narrow Band Pass Infrared Filters

Narrow Band Pass (NBP) Infrared Filters are designed to isolate a narrow region of the infrared spectrum and are used in a variety of applications where precision detection of a specified wavelength is critical.

Example of NBP IR Filter Spectral Transmission Graph

Umicore has a wide range of off-the-shelf Infrared Filter designs, as well as extensive experience in designing and producing to bespoke technical performance requirements.

Contact us to discuss your application and learn how we can best support you.

Infrared Filter Spectral Specifications

Transmission Peak: Typically ≥85%

Transmission Average: Typically ≥70%

Attenuation: Typically ≤0.1% outside passband

Edge Slopes: Typically 3% to 5%

Surface Quality: Typically 60:40 Scratch:Dig

Operating Temperature: Typically -40°C to +80°C

Infrared Filter Environmental Durability Testing

Adhesion: MIL-C-48497A (4.5.3.1)

Humidity: MIL-C-48497A (4.5.3.2)

Moderate Abrasion: MIL-C-48497A (4.5.3.3)

Temperature: MIL-C-48497A (4.5.4.1)

Solubility/Cleanability: MIL-C-48497A (4.5.4.2)