Bi685 Dark Red Interference Bandpass Filter

Bandpass Filters are used in a variety of industries, including machine vision,factory automation, security and surveillance, license plate recognition, medical and life science, agricultural inspection, aerial imaging, motion analysis, photography and cinematography.


Bi685 is designed for use in certain aerial vegetative health monitoring applications. This filter isolates the 685nm wavelength range used in some red light vegetative health indices When plants are stressed or dying, photosynthesis slows down or stops. IR wavelengths are absorbed, while more visible light–particularly red light–is reflected.

Bi685 filters are also recommended for use with dark red laser diodes and LED lighting operating in the 680-690nm range, particularly in situations where ambient light can be overwhelming or separation from other red lighting wavelengths is needed.

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