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Description
MidOpt TB475/550/850-43 Blue Green NIR Triple Bandpass Filter
TB475/550/850 Triple Bandpass Blue+Green+850nm NIR Filter, when mounted in converted consumer cameras used in aerial surveying applications, can help provide a more affordable, lightweight alternative vs. systems employing three or more cameras or sensors. Blue-Green-Near IR Extended Normalized Difference Vegetation Index (ENDVI) data gathered for vegetative health monitoring can be used to provide similar, but spectrally different information as compared to traditional NDVI data.Soil background, differing atmospheric conditions and various types of vegetation can all influence the reflection of visible light somewhat differently. ENDVI analysis may, at times, be able to impart more accurate or reliable information regarding plant or crop health by additional leveraging of information in the blue portion of the spectrum.
The formula used is:
ENDVI = [(NIR + Green) – (2 * Blue)] / [(NIR + Green) + (2 * Blue)]
MidOpt TB475/550/850-43 Technical Specifications:
Filter Model | TB475/550/850 |
Filter Type | Blue Green NIR Triple Bandpass |
StablEDGE | No |
Useful Range | 468nm - 483nm / 543nm - 558nm / 835nm - 865nm |
Tolerance | +/- 10nm |
Peak Transmission | ≥85% |
Surface Quality | 40/20 |
Filter Size | 43mm |
Filter Thread | M43x0.75 |
Outer Diameter | 48mm |
Clear Aperture | 41mm |
Overall Thickness | 7mm |
Exposed Thickness | 5.2mm |
FWHM | 20nm/20nm/45nm |
Average Transmission | Not Specified |
Brand | Midwest Optical Systems |
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