635FDL25 25 mm Dia. Longpass Dichroic Filter 635nm
- Type
- Filter
- Subtype
- Dichroic Filter
- Brand
- Knight Optical
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- Cut On Frequency
- 635 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
635FDL25 25 mm Dia. Longpass Dichroic Filter 635nm
The 635FDL25 is a Dichroic Filter, specifically designed for longpass applications with a cut-on wavelength of 635nm. This filter is sourced from Knight Optical, a reputable vendor known for their high-quality optical components. The filter is designed with a circular geometry, having a diameter of 25mm and a thickness of 1.1mm, making it suitable for a wide range of optical systems.
The filter is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and high damage threshold. The coating on both the front and back surfaces of the filter is KNI 635FDL-0, which is specifically designed to achieve the desired longpass characteristics.
The physical data of the filter indicates that it starts transmitting at 635nm, making it ideal for applications where light of longer wavelengths needs to be passed while blocking shorter wavelengths. The filter is currently in stock and available for immediate purchase through the vendor's website.
