13-175 25 mm Dia. Hoya ND-0.3 Absorptive Neutral Density Filter; OD 2 600-1050nm

The 13-175 is a 25 mm diameter Neutral Density Filter, manufactured by Hoya and sourced from Edmund Optics. This filter is designed for use in the near-infrared spectrum, specifically at a wavelength of 588nm, making it ideal for applications that require precise control over infrared light.

The filter is of the absorptive type, meaning it reduces the intensity of light by absorbing it rather than reflecting or scattering it. This results in a more consistent and predictable attenuation of light. The ND-0.3 designation indicates that the filter reduces the light intensity by a factor of 1.3, or 0.3 decibels.

The filter is coated on both the front and back surfaces with the EDM 13-175 coating. This coating enhances the filter's performance and durability, providing protection against environmental factors and ensuring consistent optical performance over time.

The filter has a thin lens shape, with a thickness of 2mm. This makes it suitable for use in optical systems where space is at a premium. The 25mm diameter is a standard size, making it compatible with a wide range of optical components and systems.

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