440FIB25 25 mm Dia. Standard Interference Bandpass Filter 440nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Knight Optical
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- 445 nm
- Cut On Frequency
- 435 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4663498143390203
- λ
- 440 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
440FIB25 25 mm Dia. Standard Interference Bandpass Filter 440nm
The 440FIB25 is a 25 mm diameter Standard Interference Bandpass Filter, specifically designed to transmit light in the 440nm wavelength range. This filter is sourced from Knight Optical, a reputable vendor known for their high-quality optical components.
The filter is of the Bandpass type, which means it allows a specific range of wavelengths to pass through while blocking others. In this case, the cut-on wavelength is 435nm, and the cut-off wavelength is 445nm, making it highly selective for the 440nm wavelength. The Central Wavelength (CWL) is also 440nm, indicating the peak transmission wavelength.
The filter is made from UVFS Mal-1965, a material known for its optical properties in the ultraviolet and visible light spectrums. It has a circular base shape, a common design for optical components due to its ease of use and versatility.
The filter's geometry includes a diameter of 25mm and a thickness of 6.1mm, providing a substantial yet manageable size for various applications. The coating on both the front and back surfaces is KNI 440DIB, a proprietary coating from Knight Optical that enhances the filter's performance and durability.
The filter's shape is classified as a Thin Lens, suggesting it may have lens-like properties, although this is not explicitly stated in the provided data. The filter is currently in stock and available for immediate purchase through the vendor's website.