550FDL50 50 x 50 mm Longpass Dichroic Filter 550nm
- Type
- Filter
- Subtype
- Dichroic Filter
- Brand
- Knight Optical
Properties
- Shape
- Rectangular
- Cut Off Frequency
- Cut On Frequency
- 550 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
550FDL50 50 x 50 mm Longpass Dichroic Filter 550nm
The 550FDL50 is a high-quality dichroic filter, measuring 50 x 50 mm, designed for longpass applications with a cut-on wavelength of 550nm. This filter is sourced from Knight Optical, a reputable vendor known for their extensive catalog of optical elements.
The filter is made from N-BK7 Schott, a popular optical glass due to its excellent homogeneity, low auto-fluorescence, and high damage threshold. The filter's geometry includes a thickness of 1.1mm, making it suitable for a wide range of optical applications.
The 550FDL50 features a coating of KNI 550FDL-0 on both the front and back surfaces, enhancing its performance in longpass applications. This coating ensures a sharp cut-on at 550nm, allowing for efficient filtering of unwanted wavelengths.
The filter's rectangular shape, or base shape, is designed for ease of integration into various optical systems. It is categorized as a thin lens, indicating its minimal thickness relative to its aperture.
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