This is a Plano-Convex Lens, type SLB-P-IR2, offered by OptoSigma. It is designed for use within the wavelength range of 750-1550nm, making it suitable for a variety of applications in the infrared spectrum. The lens is fabricated from n-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility.
The lens has a diameter of 8.0 mm and a thickness of 1.5 mm at the edge, while the center thickness is 2.1 mm. The effective focal length (EFL) is 25 mm, and the radius of curvature (R1) is 12.98 mm. The back focal length (BFL) is 23.6 mm, and the lens does not have any inner or outer radius specified, indicating it is a simple plano-convex design.
The lens features a coating of opt IR2 on both the front and back surfaces. This coating is specifically designed for the infrared spectrum, enhancing the lens's performance within its specified wavelength range. The lens's shape is spherical, a common choice for its ease of manufacturing and good optical performance.