This is a Plano-Convex lens with a diameter of 18 mm, manufactured by CeNing Optics. The lens is made of N-BK7 glass, a popular material in optical systems due to its excellent optical properties and wide transparency range. The lens has a focal length of 50 mm, making it suitable for various applications that require image magnification or reduction.
The lens geometry includes a thickness of 1.8 mm at the edge and 3.41 mm at the center. The radius of curvature for the first surface (R1) is 25.94 mm, and the back focal length (BFL) is 47.76 mm. The lens does not have any coating, which means it is uncoated. However, it can be customized with various coatings upon request to enhance its performance in specific applications.
The lens is spherical in shape, meaning it has a curved surface that is symmetric around an axis. This shape is common in optical systems due to its simplicity and the ability to focus light to a point. The lens is circular in base shape, adding to its versatility in various applications.
The lens is designed to work with a wavelength of 546.1 nm, which is in the visible light spectrum. It is important to note that the lens's performance can vary depending on the wavelength of the light it is designed to handle.