685FIJ25 25 mm Dia. Standard Interference Bandpass Filter 685nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Knight Optical
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- 690 nm
- Cut On Frequency
- 680 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.455642801682529
- λ
- 685 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
685FIJ25 25 mm Dia. Standard Interference Bandpass Filter 685nm
The 685FIJ25 is a 25 mm diameter Standard Interference Bandpass Filter, specifically designed to transmit light in the 685nm wavelength range. This filter is sourced from Knight Optical, a reputable vendor known for their high-quality optical components.
The filter is made of UVFS Mal- 1965 material, a choice that ensures durability and reliability. It features a circular base shape and a thin lens design, making it suitable for a wide range of optical applications. The filter's geometry includes a diameter of 25mm and a thickness of 6.1mm, providing a balance between compactness and robustness.
The 685FIJ25 has a cut-on wavelength of 680nm and a cut-off wavelength of 690nm, with a central wavelength (CWL) of 685nm. This specificity in wavelength transmission makes it an ideal component for applications that require narrow-band light filtering.
The filter's coating is KNI 685Dij on both the front and back surfaces. This coating enhances the filter's performance by reducing unwanted reflections and increasing transmission in the desired wavelength range.