FND-30C02-0.1 30 mm Dia. Unmounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm

OptoSigma's FND-30C02-0.1 is a 30 mm diameter, unmounted Neutral Density Filter, designed for use in the visible light spectrum, specifically between 400-700nm. This filter is made from N-BK7 Schott, a high-quality borosilicate glass known for its excellent optical properties.

The filter features a thickness of 2mm, and is coated with Opt FND-0-1 on both the front and back surfaces. This coating is a reflective neutral density type, designed to reduce the intensity of light without altering its color balance. The coating is thin, contributing to the filter's overall compact design.

The geometry of the filter is that of a thin lens, making it suitable for use in a variety of optical systems. The 30mm diameter provides a good balance between size and light-gathering capability, while the 2mm thickness ensures structural integrity without adding unnecessary weight.

This filter is currently in stock and available for purchase through the OptoSigma website. The provided weblink offers direct access to the product page, where more information, including pricing and shipping details, can be found.