NDUV40B Dia. 25 mm Unmounted UVFS Reflective ND Filter; OD 4.0
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25 mm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4877929746541196
- λ
- 300 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
NDUV40B Dia. 25 mm Unmounted UVFS Reflective ND Filter; OD 4.0
The NDUV40B is a circular Neutral Density Filter, unmounted, with a diameter of 25 mm and a thickness of 1 mm. This filter is sourced from Thorlabs, a renowned vendor in the optical industry. It is designed with the UVFS-ML1965 material, which is known for its exceptional optical properties.
The filter features a coating on both the front and back surfaces, specifically the THORNDUV OD4 coating. This coating is engineered to provide a Neutral Density of 4.0, which is equivalent to a 100,000-fold reduction in transmittance. This makes the NDUV40B an ideal choice for applications that require significant light reduction while maintaining color neutrality.
The NDUV40B filter is shaped in a Thin Lens form, which is beneficial for applications that require minimal optical path deviation. The filter's geometry and shape make it compatible with various optical systems, enhancing its versatility.
For more information and to check the current stock status, you can visit the product's webpage at https://www.thorlabs.com/thorproduct.cfm?partnumber=NDUV40B.