The LA1951-D is a Plano-Convex lens, a type of spherical lens, sourced from Thorlabs, a renowned optical components manufacturer. This lens, with a base shape of a circle, is designed for use in the optical spectrum centered around 587.6 nm.
The lens has a diameter of 1 inch (25.4 mm) and a thickness that varies from 1.8 mm at the edge to 11.7 mm at the center. The effective focal length (EFL) of this lens is 25.3 mm, making it suitable for a variety of optical applications.
The LA1951-D is made of N-BK7, a popular optical glass from Schott, which is known for its excellent optical properties and wide transmission range. The lens is coated with a broadband anti-reflection coating (ARC), specifically designed for the wavelength range of 1650-3000 nm, enhancing its performance in infrared applications.