13-257 50 mm Dia. Hoya ND-25 Absorptive Neutral Density Filter; OD 0.5 750-1550nm
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 50 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
13-257 50 mm Dia. Hoya ND-25 Absorptive Neutral Density Filter; OD 0.5 750-1550nm
The 13-257 is a Neutral Density Filter, specifically designed for use in the near-infrared (NIR) spectrum, with a diameter of 50 mm and a thickness of 2 mm. This filter is sourced from Edmund Optics, a leading vendor in the optical industry, and is identified by the Material ID "uvfs mal- 1965".
The filter features an OD (Optical Density) of 0.5, which corresponds to a transmission of approximately 79.4%, making it ideal for applications requiring a significant reduction in light intensity without altering the color balance. The 13-257 filter is designed to operate within the wavelength range of 750-1550nm, making it suitable for use in various NIR applications.
The 13-257 filter boasts a Thin Lens shape, which is beneficial for applications where space is a constraint. The front and back surfaces of the filter are coated with "edm 13-223", a coating that enhances the filter's performance and durability.
For more information, including pricing and availability, please refer to the vendor's website at https://www.edmundoptics.com/p/05-od-50mm-dia-nir-ii-coated-absorptive-nd-filter/44485/.