LB1909 N-BK7 Bi-Convex Lens; Dia:2 in; f=500.0 mm Uncoated

The LB1909 N-BK7 Bi-Convex Lens is a high-quality optical component sourced from Thorlabs, a leading vendor in the field of precision photonics. This lens, with a diameter of 2 inches, is designed for use at a focal length of 500.0 mm, making it suitable for a wide range of optical applications.

The lens is made from N-BK7, a type of borosilicate glass known for its excellent optical properties. This material is characterized by a high refractive index and low dispersion, making it an ideal choice for applications that require high-precision imaging or light manipulation. The lens is uncoated, meaning it does not have any additional layers applied to enhance its optical properties. However, uncoated lenses can still provide excellent performance in many applications, especially where high transmission and low reflection are not critical factors.

The geometry of the lens is carefully crafted to ensure optimal performance. It has a thickness of 3 mm at the edge and 4.3 mm at the center, providing a robust and stable platform for optical systems. The lens features two spherical surfaces with radii of curvature of 514.4 mm and -514.4 mm, respectively. These surfaces focus light to a point 500.0 mm away from the lens, making it a powerful tool for imaging and light manipulation.

The lens is designed to operate at a wavelength of 587.6 nm, a common wavelength used in many optical systems. It is important to note that the lens's performance may vary at other wavelengths. Therefore, users should ensure that this lens is suitable for their specific application before purchasing.