420DIB50 50 mm Dia. Standard Interference Bandpass Filter 420nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Knight Optical
Properties
- Shape
- Circular
- Diameter
- 50 mm
- Cut Off Frequency
- 425 nm
- Cut On Frequency
- 415 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.468093689605173
- λ
- 420 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
420DIB50 50 mm Dia. Standard Interference Bandpass Filter 420nm
The 420DIB50 is a 50 mm diameter Standard Interference Bandpass Filter, specifically designed to pass light in the 420nm wavelength range while blocking light at other wavelengths. This filter is sourced from Knight Optical, a reputable vendor known for their high-quality optical components.
The filter is made from UVFS MAL-1965, a material specifically chosen for its optical properties in the ultraviolet and visible light spectrums. It has a base shape of a circle, a standard geometry for optical components due to its uniform distribution of light. The filter's thickness is 6.1mm, providing sufficient structural integrity while minimizing optical distortions.
The 420DIB50 has a cut-on wavelength of 415nm and a cut-off wavelength of 425nm, meaning it begins to pass light at 415nm and stops passing light at 425nm. The central wavelength (CWL) of this filter is 420nm, the wavelength at which the filter has its maximum transmittance.
Both the front and back surfaces of the filter are coated with KNI 420DIB, a proprietary coating developed by Knight Optical. This coating enhances the filter's performance by reducing surface reflections and increasing transmission in the desired wavelength range.
The filter's shape is that of a thin lens, which minimizes optical aberrations and provides a flat, even surface for easy integration into optical systems. This filter is currently in stock and available for immediate purchase through the vendor's website.