AC508-150-A 50.8 mm Dia. N-BK7/SF5 Unmounted Achromatic Doublet; EFL=150mm 400-700nm

The AC508-150-A is a high-quality achromatic doublet lens, sourced from the renowned optical component manufacturer, Thorlabs. This lens, with a diameter of 50.8 mm, is designed for use in the 400-700nm spectral range, making it suitable for a wide range of applications in the visible spectrum.

The lens is a multiplet, composed of two distinct materials: N-BK7 from Schott and SF5 from Schott. N-BK7, a borosilicate crown glass, is known for its excellent optical properties, including high transmission and low dispersion. SF5, on the other hand, is a fluorite crown glass, characterized by its low refractive index and low dispersion. The combination of these materials in a doublet configuration helps to correct chromatic aberration, ensuring high-quality imaging across the specified spectral range.

The lens features a focal length of 150mm, as indicated by its Effective Focal Length (EFL). This, coupled with its achromatic design, makes it an ideal choice for applications requiring high image quality and minimal chromatic aberration, such as microscopy, beam shaping, or laser focusing.

The lens is coated with Thorlabs' AC400-700-A coating on both the front and back surfaces. This anti-reflection coating is designed to reduce surface reflections and increase transmission in the 400-700nm spectral range, further enhancing the lens' performance.

The AC508-150-A is unmounted, providing users with the flexibility to integrate it into their optical systems in a way that best suits their specific needs. However, it's important to note that the lens requires proper mounting and alignment to ensure optimal performance.