900FIJ25 25 mm Dia. Standard Interference Bandpass Filter 900nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Knight Optical
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- 905 nm
- Cut On Frequency
- 895 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4517539549334455
- λ
- 900 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
900FIJ25 25 mm Dia. Standard Interference Bandpass Filter 900nm
The 900FIJ25 is a 25 mm diameter Standard Interference Bandpass Filter, specifically designed to operate at a central wavelength of 900nm. 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 transmission of light within a specific range of wavelengths while blocking out unwanted spectral regions. The 900FIJ25 is cut on at 895nm and cut off at 905nm, ensuring a tight bandpass performance around the desired 900nm wavelength.
The filter 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 where space is a constraint. The filter has a thickness of 6.1mm, providing sufficient mechanical strength while minimizing optical distortions.
The front and back surfaces of the filter are coated with KNI 900Dij, a proprietary coating developed by Knight Optical. This coating enhances the filter's performance by reducing reflection and increasing transmission at the desired wavelength.
