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680DIB12 12.5 mm Dia. Standard Interference Bandpass Filter 680nm

680DIB12 12.5 mm Dia. Standard Interference Bandpass Filter 680nm

Type
Filter
Subtype
Bandpass Filter
Brand
Knight Optical
Product webpage
Knight Optical products in the 3DOptix catalog

Properties

Shape
Circular
Diameter
12.5 mm
Cut Off Frequency
685 nm
Cut On Frequency
675 nm

Material

Name
UVFS
Dispersion Equation
Sellmeier
n (λ)
1.4557635703408012
λ
680 nm
B1
0.6961663
C1
0.004679148 μm2
B2
0.4079426
C2
0.013512063 μm2
B3
0.8974794
C3
97.93400254 μm2

680DIB12 12.5 mm Dia. Standard Interference Bandpass Filter 680nm

The 680DIB12 is a 12.5 mm diameter Standard Interference Bandpass Filter, specifically designed to transmit light in the 680nm range. This filter is sourced from Knight Optical, a reputable vendor known for their high-quality optical components.

The filter is a Bandpass type, which means it allows light to pass through a specific range of wavelengths while blocking out other wavelengths. In this case, the cut-on wavelength is 675nm, and the cut-off wavelength is 685nm, making it highly effective in isolating the 680nm wavelength. The Central Wavelength (CWL) of this filter is also 680nm, ensuring optimal performance in this range.

The 680DIB12 is made from UVFS Mal-1965, a material known for its excellent optical properties. It features a Thin Lens shape, which is beneficial for applications that require minimal thickness and weight. The filter's geometry includes a diameter of 12.5mm and a thickness of 6.1mm, making it suitable for a wide range of optical systems.

The filter's coating is KNI 680DIB on both the front and back surfaces, enhancing its durability and performance. This coating also helps to reduce reflections and increase transmission, making the filter more efficient.

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