685DIJ25 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
685DIJ25 25 mm Dia. Standard Interference Bandpass Filter 685nm
The 685DIJ25 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 common choice for optical applications due to its excellent transmission characteristics and durability. It features a circular base shape, with a diameter of 25mm and a thickness of 6.1mm, making it suitable for a wide range of optical systems.
The 685DIJ25 is coated with KNI 685DIJ on both the front and back surfaces, providing superior performance and protection. This coating is designed to cut on at 680nm and cut off at 690nm, ensuring a tight bandpass around the desired 685nm wavelength. The coating also features a Cut-On Wavelength (CWL) of 685nm, further enhancing its performance in this wavelength range.
The filter has a Thin Lens shape, which is beneficial for applications where space is limited or where a flat surface is required. This filter is currently in stock and available for immediate purchase through the vendor's website.