This is a 67-165 Plano-Convex Lens, sourced from the reputable optical components vendor, Edmund Optics. The lens boasts a 9.0mm diameter and a focal length of 90.0mm, making it suitable for a wide range of optical applications.
The lens is made from the high-quality material, n-BK7 Schott, which is known for its excellent optical properties and durability. The front and back surfaces of the lens are coated with the EDM VIS-0 STD curve coating, designed to enhance the lens's performance within the visible light spectrum, specifically between 425-675nm.
The lens's geometry is another notable feature. It has a thickness of 1.78mm at the edge and 2.0mm at the center, providing a balanced optical path. The inner radius is 0mm, and the outer radius is also 0mm, indicating a uniform curvature. The lens's base shape is circular, contributing to its versatility in various optical systems.