13-173 25 mm Dia. Hoya ND-0.3 Absorptive Neutral Density Filter; OD 1.3 600-1050nm

The 13-173 is a 25 mm diameter Neutral Density Filter, specifically designed for use in the Near-Infrared (NIR) spectrum, with a wavelength of 588 nm. This filter is sourced from the reputable optical vendor, Edmund Optics. It is an essential component for various optical applications, offering precise light control and neutral color balance.

The filter is of the Absorptive type, meaning it reduces light intensity by selectively absorbing specific wavelengths while allowing others to pass through. This particular model has an Optical Density (OD) of 1.3, which translates to a 95% transmission rate, making it suitable for moderately bright light conditions.

The 13-173 filter is designed with a Circular geometry, featuring a Thin Lens shape for minimal distortion and ease of integration into various optical systems. Its dimensions include a diameter of 25 mm and a thickness of 1.45 mm, making it compact and lightweight.

The filter's front and back surfaces are coated with the EDM 13-173 coating, enhancing its performance and durability. This coating aids in reducing surface reflections and improving overall transmission, ensuring optimal performance in its intended applications.

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