680DIB12 12.5 mm Dia. Standard Interference Bandpass Filter 680nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Knight Optical
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.