521FDL12 12.5 mm Dia. Longpass Dichroic Filter 521nm
- Type
- Filter
- Subtype
- Dichroic Filter
- Brand
- Knight Optical
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- Cut Off Frequency
- Cut On Frequency
- 521 nm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167817367777034
- λ
- 588 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
521FDL12 12.5 mm Dia. Longpass Dichroic Filter 521nm
The 521FDL12 is a Dichroic Filter, specifically designed for longpass applications with a cut-on wavelength of 521nm. This filter is sourced from Knight Optical, a reputable vendor known for their high-quality optical components. The filter is made from N-BK7 Schott, a widely used optical glass due to its excellent optical properties and durability.
The filter has a circular shape with a diameter of 12.5mm and a thickness of 1.1mm, making it suitable for a wide range of optical systems. The coating on both the front and back surfaces is KNI 521FDL-0, which contributes to its longpass filtering capabilities.
The 521FDL12 is designed to pass wavelengths of 588nm and above, while blocking or reflecting wavelengths below 521nm. This makes it ideal for applications where the separation of specific wavelengths is required.
The filter is currently in stock and available for immediate purchase through the vendor's website. Detailed specifications and purchasing information can be found at https://www.knightoptical.com/stock/default/dichroic-filter-longpass-520nm-dia-12-5mm.html.