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The actual percent transmission averages a nearly constant 12
There are a range of vegetation indices used in agriculture
1550nm light is also generally considered to be “eye safe” (and safe for CMOS camera sensors)
The MidOpt LP920 Near-Infrared (IR) Longpass Filter blocks visible (VIS) and unwanted near-IR wavelengths and is designed for use with 940nm LED illumination
Normalized Near Infrared NNIR = NIR / (NIR + Red + Green)
Neutral Density (ND) Filter - Absorptive 50% Transmission, 425-675nm - MidOpt ND030 Size:27mm The actual percent transmission averagesThe MidOpt ND030 Neutral Density (ND) Filter has an optical density of 0. 3, or average 50% transmission across the visible (VIS) spectrum. The ND030 has identical male and female threads on either end so it can be stacked with other ND filters to achieve various optical densities. For example, two ND030 filters stacked together would perform approximately the same as one ND060 Filter. MidOpt ND Filters are double side polished for exceptional
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