46-214 25 mm Dia. Hoya ND-25 Absorptive Neutral Density (OD 0.6) Color Filter; t=2.5 mm 400-700nm
- Type
- Filter
- Subtype
- Color Glass
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
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
46-214 25 mm Dia. Hoya ND-25 Absorptive Neutral Density (OD 0.6) Color Filter
The 46-214 25 mm Dia. Hoya ND-25 Absorptive Neutral Density (OD 0.6) Color Filter is a high-quality optical component sourced from Edmund Optics. This filter is designed with a circular shape and a diameter of 25 mm, making it suitable for a wide range of optical applications.
The filter boasts a thickness of 2.5 mm, providing excellent durability and stability. It is made from UVFS MAL-1965 material, ensuring high-performance optical properties. The ND-25 designation indicates a Neutral Density (ND) value of 0.6, which means it reduces the light intensity by a factor of 2.5. This is particularly useful in situations where excessive light might cause overexposure or other optical issues.
The filter features absorptive coating on both the front and back surfaces, identified as EDM 48-527. This coating enhances the filter's performance by absorbing a specific portion of the light spectrum, resulting in a more balanced and accurate light transmission. The coating also helps to protect the filter from scratches and other forms of damage.
The filter's geometry is shaped as a thin lens, which is beneficial for applications where minimal distortion and a flat field of view are required. This filter is currently in stock and available for purchase through the Edmund Optics website, as indicated by its valid weblink status.