AC254-030-B 25.4 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=30mm 650-1050nm

The AC254-030-B is a high-quality achromatic doublet lens from Thorlabs, designed for use in the 650-1050nm spectral range. This lens is part of Thorlabs' extensive catalog of optical elements, which includes a wide variety of lenses, mirrors, and other optical components.

The lens features a 25.4mm diameter and a total length of 21.09mm, making it suitable for use in a variety of optical systems. The lens is constructed from two different materials: N-BAF10 and N-SF6HT, both from Schott. These materials were chosen for their excellent optical properties, which contribute to the lens' high performance.

The lens is coated with Thorlabs' AC650-1050-B coating on both the front and back surfaces. This coating is designed to improve the lens' transmission in the 650-1050nm range, further enhancing its performance in this spectral region.

The lens is unmounted, meaning it does not come with any housing or mounting hardware. This allows users to integrate the lens into their system in a way that best suits their needs. However, it also means that users will need to provide their own mounting solution.

According to Thorlabs' website, the lens is currently in stock, making it a readily available option for users looking for a high-quality achromatic doublet lens for use in the 650-1050nm range.