NDUV503B Dia. 0.5 in Unmounted UVFS Reflective ND Filter; OD 0.3

The NDUV503B is a circular Neutral Density Filter, unmounted, with a diameter of 0.5 inches and a thickness of 1 millimeter. This filter is sourced from Thorlabs, a renowned vendor in the optical industry, and is part of their UVFS reflective series, specifically identified by the material ID "uvfs mal- 1965".

The NDUV503B is designed to uniformly reduce the intensity of incident light without altering its color composition. This particular model boasts an Optical Density (OD) of 0.3, which translates to a reduction of approximately 25% in light intensity. This makes it an ideal choice for applications where moderate light reduction is required.

The filter's coating is another notable feature. Both the front and back surfaces are coated with Thorlabs' proprietary NDUV coating (NDUV OD03), which is specifically designed for UV applications. This coating enhances the filter's performance in the UV region of the spectrum, making it suitable for use in UV light-based applications.

The NDUV503B filter features a 'Thin Lens' shape, which refers to its optical design. This shape is often chosen for its compactness and ease of integration into optical systems.

According to the vendor's information, the NDUV503B is currently in stock, and more details about this product can be found on Thorlabs' official website using the provided catalog number.