MidOpt - TB550/660/850 Triple Bandpass Green + Red + 850nm Near-Infrared (IR) Filter

The MidOpt TB550/660/850 Triple Bandpass Green + Red + 850nm Near-Infrared (IR) Filter is primarily designed for aerial agriculture mapping and surveying. Green-Red-Near IR (NIR) data is used for applications where Chlorophyll Vegetation Index (CVI) and other vegetative index monitoring is preferred. TB550/660/850 filters, when mounted in converted consumer cameras, provide a more affordable, lightweight alternative compared to systems employing three or more cameras or sensors. Some of the formulas that are employed in these cases include:

Chlorophyll Vegetation Index CVI = (NIR * Red) / (Green ^ 2)

Normalized Green NG = Green / (NIR + Red + Green)

Normalized Near Infrared NNIR = NIR / (NIR + Red + Green)

Normalized Red NR = Red / (NIR + Red + Green)

Triangular Vegetation Index TVI =0.5 * (120 * (NIR – Green) – 200 * (Red – Green))

MidOpt Multi-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.