DB550-850-77 Green and 850nm NIR Dual Bandpass Filter M77x0.75

Midwest Optical SystemsSKU: DB550-850-77

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Sale price$653.00 USD

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Description

MidOpt DB550-850-77 Green and 850nm NIR Dual Bandpass Filter

The DB550/850 compliments the DB660/850 and DB475/850 filters. When modifying a single color camera by removing its IR blocking filter, incorporation of this filter in its place allows reflected near-infrared light (850nm) to be captured in the camera sensor’s red channel and reflected green light (550nm) to be captured in the sensor’s green channel (the blue channel is not used). Healthy vegetation will absorb (not reflect) green light and strongly reflect near-infrared light. Thus, this information can then be used to apply a false color gradient to images to highlight better the contrast between regions of healthy vegetation vs. areas with stressed, diseased, or no vegetation.

There is a range of vegetation indices used by the remote sensing and precision agriculture community. While NDVI is probably the most common, each has its advantages. Any indices listed below can be considered when employing a single color sensor camera converted using a DB550/850 filter. Information gathered can then be overlaid on vegetation maps to provide information used to make better crop management decisions.

MidOpt DB550-850-77 Technical Specifications:

Product Line / Series DB - Dual Bandpass
Filter Model DB550/850
Filter Type Green and 850nm NIR Dual Bandpass
StablEDGE No
Useful Range 535nm - 565nm / 830nm - 870nm
Tolerance +/- 5nm
Peak Transmission ≥85%
Surface Quality 40/20
Filter Size 77mm
Filter Thread M77x0.75
Outer Diameter 85mm
Clear Aperture 76.8mm
Overall Thickness 6.5mm
Exposed Thickness 4.5mm
FWHM 40nm/50nm
Compatible LED 548nm, 840nm, 850nm
Average Transmission Not Specified
Brand Midwest Optical Systems

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