The 38-569-INK is a Plano-Convex lens, a type of spherical lens, sourced from Edmund Optics. This lens, with a diameter of 6.0mm, is designed for use in the visible light spectrum, specifically at a wavelength of 587.6nm. The lens features a front and back coating of YAG-BBAR, which is optimized for use within the 500-1100nm range.
The lens's geometry includes a thickness of 1.01mm at the edge and 1.45mm at the center, with a focal length (FL) of 20mm. The lens's front surface has a radius of curvature (R1) of 10.34mm, and the back focal length (BFL) is 19.04mm. The lens is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and relatively low cost.
The YAG-BBAR coating on the lens enhances its durability and performance. This coating reduces reflection and increases transmission, making it ideal for applications that require high light transmission and minimal reflection. The coating also provides protection against environmental factors, ensuring the lens maintains its performance over time.