940DIB12 12.5 mm Dia. Standard Interference Bandpass Filter 940nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Knight Optical
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- Cut Off Frequency
- 945 nm
- Cut On Frequency
- 935 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4511992026753475
- λ
- 940 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
940DIB12 12.5 mm Dia. Standard Interference Bandpass Filter 940nm
The 940DIB12 is a 12.5 mm diameter Standard Interference Bandpass Filter, specifically designed to operate at a central wavelength of 940nm. 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 935nm, and the cut-off wavelength is 945nm, ensuring a narrow bandwidth around the central wavelength.
The filter is made from UVFS Mal-1965, a material known for its optical properties. It has a Thin Lens shape, which is beneficial for applications requiring minimal optical path deviation. The filter's thickness is 6.1mm, providing sufficient mechanical strength while maintaining excellent optical performance.
The front and back surfaces of the filter are coated with KNI 940DIB, a coating specifically designed for this filter. This coating enhances the filter's performance by ensuring high transmission at the desired wavelength and high rejection outside this range.
The filter is currently in stock and available for immediate purchase. For more information, please refer to the vendor's website using the provided weblink.