89-661 25 mm Dia. Hard Coated High Performance OD 4.0 Longpass Filter; t=3 mm 1150nm
- Type
- Filter
- Subtype
- Longpass Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- Cut On Frequency
- 1150 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
89-661 25 mm Dia. Hard Coated High Performance OD 4.0 Longpass Filter; t=3 mm 1150nm
The 89-661 is a high-performance longpass filter, boasting a 25 mm diameter and a thickness of 3 mm. This filter, sourced from Edmund Optics, is designed to transmit light with wavelengths longer than 1150 nm, while blocking shorter wavelengths.
The filter is constructed with a base shape of a circular Thin Lens, ensuring efficient light transmission and minimal distortion. It is made from UVFS Mal-1965 material, a choice that enhances its durability and optical performance.
The 89-661 filter features hard coating on both the front and back surfaces, denoted as EDM 89-657. This coating not only improves the filter's scratch resistance but also enhances its overall optical performance.
This filter is currently in stock and available for immediate purchase through the Edmund Optics website, as indicated by its weblink status. For more detailed information, users are encouraged to visit the provided weblink.