820DIB12 12.5 mm Dia. Standard Interference Bandpass Filter 820nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Knight Optical
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- Cut Off Frequency
- 825 nm
- Cut On Frequency
- 815 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4529792355927742
- λ
- 820 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
820DIB12 12.5 mm Dia. Standard Interference Bandpass Filter 820nm
The 820DIB12 is a 12.5 mm diameter Standard Interference Bandpass Filter, specifically designed to operate at a central wavelength of 820nm. This filter is sourced from Knight Optical, a reputable vendor known for their high-quality optical elements.
The filter is a Bandpass type, which means it allows transmission of light within a specific range of wavelengths while blocking other wavelengths. In this case, the cut-on wavelength is 815nm, and the cut-off wavelength is 825nm, ensuring a tight bandpass around the central wavelength.
The 820DIB12 is made from UVFS MAL-1965, a material known for its optical properties and durability. The filter has a thickness of 6.1mm, which is typical for this type of optical component. The coating on both the front and back surfaces of the filter is KNI 820DIB, a proprietary coating developed by Knight Optical for enhanced performance.
The filter's shape is that of a Thin Lens, which implies that it can focus light to a certain extent, adding to its versatility. The filter is currently in stock and available for immediate purchase through the vendor's website.
