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MidOpt ND Filters are double-side polished for exceptional parallelism and optical flatness
These filters are also excellent for use in vegetative health monitoring applications where separate blue plus near-IR imaging sensors / cameras are used as opposed to the more traditional NDVI index applications that utilize red plus near-IR wavelengths
The SP650 is useful to achieve natural color rendition with superior response in the blue channel
Some camera sensors may have an overwhelming amount of red
It's also commonly used in hand-held laser rangefinder applications
Dark Red Interference Bandpass Filter, 650-665nm - MidOpt Bi660 Size:25.4 C-Mount MidOpt ND Filters are double-sideThe MidOpt Bi660 Dark Red Interference Bandpass Filter is recommended for use with dark red laser diodes and LED lighting operating in the 660 670nm range, in situations where ambient light can be overwhelming or separation from other red lighting wavelengths is needed. 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