62-981 25 mm Dia. Hard Coated High Performance OD 4.0 Longpass Filter; t=3 mm 400nm
- Type
- Filter
- Subtype
- Longpass Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- Cut Off Frequency
- Cut On Frequency
- 400 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
62-981 25 mm Dia. Hard Coated High Performance OD 4.0 Longpass Filter; t=3 mm 400nm
The 62-981 is a high-performance longpass filter, measuring 25 mm in diameter and 3 mm in thickness, sourced from Edmund Optics. This filter is designed to transmit light at wavelengths above 400 nm, making it ideal for applications that require the removal of shorter wavelengths.
The filter features a hard coating on both the front and back surfaces, enhancing its durability and resistance to wear and tear. The coating material is UVFS Mal-1965, which is specifically designed for optical applications.
The 62-981 filter is cut on at 400 nm, indicating that it begins to transmit light at this wavelength. It has no specified cut-off wavelength, suggesting that it continues to transmit light at all longer wavelengths.
This filter is shaped as a thin lens, which can be beneficial in certain optical systems where a flat filter may cause unwanted reflections or other optical aberrations.
For more information, including pricing and availability, please refer to the vendor's website at https://www.edmundoptics.com/p/400nm-25mm-dia-high-performance-longpass-filter/17598/.