This is an open-box Midwest Optical Midopt BN630 series narrow light red bandpass filter, and it’s in excellent shape—like new, just without the retail packaging.
It might be missing the original box or maybe the seal is broken, but the filter itself is flawless.
These filters are built for precision, letting only a specific narrow band of red light through, which is perfect for machine vision, fluorescence imaging, or any application where you need to cut out everything but that red wavelength.
It’s a circular, threaded filter, so it screws right onto your lens or system.
The specific model is the BN630, and it’s available in multiple diameters depending on what you need (like 25.5mm, 27mm, 30.5mm, 49mm, or 52mm).
Brand is Midwest Optical, so you know it’s quality optics.
If you’re building a setup that needs precise light control, grab this while it’s available—great price for a nearly new professional filter.
