Bi685 Dark Red Interference Bandpass Filter

Midwest Optical SystemsSKU: Bi685-13.25

Filter Mounting Thread: 13.25mm
Sale price$131.00 USD

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Was $200.00 Now $100.00


MidOpt Bi685 Dark Red Interference Bandpass Filter

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.

MidOpt Bi685 Dark Red Interference Bandpass Filter Technical Characteristics

Useful Range: 675-692nm
FWHM: 25nm
Tolerance: +/- 5nm
Peak Transmission ?90%
Surface Quality 40/20
Mount (Mount Varies)
Clear Aperture (Aperture Varies)
Overall Thickness (Overall Thickness Varies)
Exposed Thickness (Exposed Thickness Varies)
StablEdge No

*Filters 62mm and greater have a surface quality tolerance of 60/40.

MidOpt Bi685 Dark Red Interference Bandpass Filter Transmission Chart

MidOpt Bi685 Interference Bandpass Filter Transmission

MidOpt Bi685 Dark Red Interference Bandpass Filter Transmission Data 

MidOpt Bi685 Interference Bandpass Filter Datasheet

MidOpt Bi685 Part Numbers:

MidOpt Bi685-25.4
MidOpt Bi685-13.25
MidOpt Bi685-22.5
MidOpt Bi685-27
MidOpt Bi685-30.5
MidOpt Bi685-34
MidOpt Bi685-35.5
MidOpt Bi685-37
MidOpt Bi685-37.5
MidOpt Bi685-39
MidOpt Bi685-40.5
MidOpt Bi685-43
MidOpt Bi685-46
MidOpt Bi685-48
MidOpt Bi685-49
MidOpt Bi685-52
MidOpt Bi685-55
MidOpt Bi685-58
MidOpt Bi685-62
MidOpt Bi685-67
MidOpt Bi685-72
MidOpt Bi685-77
MidOpt Bi685-82
MidOpt Bi685-86
MidOpt Bi685-95
MidOpt Bi685-105 

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