ND02B Dia. 25 mm Unmounted Reflective ND Filter; Optical Density 0.2

The ND02B is a circular Neutral Density Filter with a diameter of 25 mm and a thickness of 1 mm, sourced from the renowned optical component manufacturer, Thorlabs. This filter is designed to reduce the intensity of incident light without altering its color composition, making it an essential tool for various optical applications.

The filter's Neutral Density (ND) coating, denoted as 'tho nd02' on both the front and back surfaces, boasts an Optical Density (OD) of 0.2. This specific OD signifies that the filter reduces the light intensity by a factor of 1.26, offering a subtle yet effective light reduction. The ND02B is particularly useful in scenarios where a slight reduction in light is required, such as in high-intensity laser applications or when capturing images in bright environments.

The ND02B filter is crafted from N-BK7 Schott glass, a material known for its excellent optical properties, including high homogeneity, low auto-fluorescence, and superior transmittance across a wide spectrum. This ensures the filter's performance is consistent and reliable, delivering accurate and distortion-free results.

The filter's 'Thin Lens' shape further enhances its functionality, allowing for easy integration into various optical systems. Moreover, the ND02B is currently in stock and available for immediate purchase via the provided Thorlabs web link.