89-663 25 mm Dia. Hard Coated High Performance OD 4.0 Longpass Filter; t=3 mm 1250nm
- Type
- Filter
- Subtype
- Longpass Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- Cut On Frequency
- 1250 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
89-663 25 mm Dia. Hard Coated High Performance OD 4.0 Longpass Filter; t=3 mm 1250nm
The 89-663 is a high-performance longpass filter, measuring 25 mm in diameter and 3 mm in thickness, sourced from the renowned optical vendor, Edmund Optics. This filter is specifically designed for applications requiring a longpass cut-on wavelength of 1250nm, making it ideal for use in infrared (IR) and near-infrared (NIR) imaging systems.
The 89-663 filter boasts a circular base shape, constructed from UVFS material with the catalog number MAL-1965. The filter's longpass characteristics enable it to transmit wavelengths above the specified cut-on while effectively blocking shorter wavelengths, providing superior image quality and contrast in IR and NIR applications.
In terms of physical data, the 89-663 filter features a cut-on wavelength of 1250nm and a cut-off wavelength of 0nm. The filter's coating, applied to both the front and back surfaces, is EDM 89-659, which further enhances its performance and durability.
The 89-663 filter is designed with a thin lens shape, ensuring minimal optical aberrations and distortions. This filter is currently in stock and available for immediate purchase through the Edmund Optics website, as indicated by its valid weblink status.
For more information and specifications, users are encouraged to visit the product's dedicated webpage at https://www.edmundoptics.com/p/1250nm-250mm-dia-high-performance-longpass-filter/32122/.