265FS25-25 25mm Dia. 265nm Bandpass Filter, HBW 25nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Andover Corporation
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- 277.5 nm
- Cut On Frequency
- 252.5 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.500118726853961
- λ
- 265 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
265FS25-25 25mm Dia. 265nm Bandpass Filter, HBW 25nm
The 265FS25-25 is a Bandpass Filter with a diameter of 25mm, designed to operate at a central wavelength of 265nm. This filter is sourced from Andover Corporation, a renowned vendor in the optical industry. The filter is characterized by its high-bandwidth (HBW) of 25nm, making it suitable for applications that require a broader range of wavelength transmission.
The filter is made from UVFS MAL-1965 material, a common choice for ultraviolet (UV) applications due to its excellent transmittance and durability. The filter's geometry includes a thickness of 3.5mm, providing robustness and stability during operation.
The physical data of the filter is noteworthy, with a cut-on wavelength of 252.5nm and a cut-off wavelength of 277.5nm. This means the filter allows wavelengths between these two values to pass through, while blocking others. The center wavelength (CWL) of the filter is 265nm, indicating the wavelength at which the filter has its maximum transmittance.
The filter's coating is consistent on both the front and back surfaces, featuring the AND 265FS25 coating. This coating is designed to enhance the filter's performance and durability, ensuring optimal operation in its intended application.
The filter's shape is described as a Thin Lens, suggesting it may have lens-like properties, such as focusing or collimating light. However, this depends on the specific design and usage of the filter.
