85-892 25 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 1000nm
- Type
- Filter
- Subtype
- Bandpass Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- 1025 nm
- Cut On Frequency
- 975 nm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4504174093336364
- λ
- 1000 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
85-892 25 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 1000nm
The 85-892 is a 25 mm diameter Bandpass Filter, supplied by Edmund Optics, with a center wavelength of 1000nm. This filter is designed to transmit light within a specific range of wavelengths while blocking other wavelengths, making it ideal for applications requiring narrowband light transmission.
The filter features a hard coating on both the front and back surfaces, identified as EDM 85-880. This coating enhances the filter's durability and resistance to environmental factors, ensuring long-term performance and reliability.
The physical dimensions of the filter include a diameter of 25mm and a thickness of 3.5mm. The cut-on wavelength is 975nm, and the cut-off wavelength is 1025nm, providing a relatively narrow bandwidth for precise light filtering. The CWL, or Central Wavelength, is 1000nm, indicating the midpoint of the filter's transmission range.
This filter is designed in the shape of a thin lens, which can be beneficial in certain optical systems where minimal thickness is required. The catalog number for this item is 85-892, and it is currently in stock, according to the vendor's website.