66-228 12.5 mm Dia. Hard Coated High Performance OD 4.0 Longpass Filter; t=2 mm 850nm
- Type
- Filter
- Subtype
- Longpass Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- Cut Off Frequency
- Cut On Frequency
- 850 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.458448271212196
- λ
- 588 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
66-228 12.5 mm Dia. High Performance OD 4.0 Longpass Filter; t=2 mm 850nm
The 66-228 is a high-performance longpass filter, boasting a 12.5 mm diameter and a thickness of 2 mm, sourced from the renowned optical components vendor, Edmund Optics. This filter is designed to transmit light with wavelengths above 850 nm, while effectively blocking shorter wavelengths, making it ideal for various applications requiring infrared (IR) light filtration.
The filter is constructed from UVFS Mal-1965 material, a high-quality optical material known for its durability and excellent optical properties. The 66-228 features a circular shape, which is a common form factor for optical components due to its ease of integration and alignment in optical systems.
The 66-228 filter is coated on both the front and back surfaces with EDM 66-228, a specialized coating that enhances the filter's performance and durability. This coating ensures optimal transmission of light in the desired wavelength range, while also providing protection against environmental factors that could degrade the filter's performance over time.
The filter's geometry, with a diameter of 12.5 mm and a thickness of 2 mm, is designed to balance between compactness and robustness. This geometry allows the filter to be used in a wide range of optical systems, from compact portable devices to larger, more complex setups.