MidOpt - Bi725 Red Edge Bandpass Filter

The MidOpt Bi725 Red Edge Bandpass Filter is designed for use in aerial vegetative health monitoring applications. It isolates the wavelength region where the most rapid change in reflectance occurs in foliage. When plants are stressed or dying, photosynthesis slows down or stops. Infrared (IR) wavelengths are absorbed, while more visible (VIS) light – particularly red light – is reflected. The transitional 725nm band is uniquely affected by vegetative health changes and provides information related to chlorophyll and nitrogen status used to distinguish thriving from stressed vegetation. MidOpt Bandpass Filters have a broad, Gaussian passband to mimic and accommodate the entire output of the most common LED wavelengths, are double-side polished for exceptional parallelism and optical flatness and are anti-reflection (AR) coated to limit glare and minimize reflection loss.