69-501 25.0mm Dia. x 175.0mm FL; Plano-Convex Lens Laser V-Coat 785nm

The 69-501 is a Plano-Convex spherical lens, characterized by its circular base shape and a diameter of 25.0mm. This lens is designed with a long focal length of 175.0mm, making it suitable for applications that require a tight focus or high magnification. The lens is fabricated from the high-quality material n-BK7 Schott, ensuring excellent optical performance and durability.

The lens features a V-coat 785nm coating on both the front and back surfaces, enhancing its performance in laser applications at a wavelength of 785nm. This coating is specifically designed to reduce reflection and increase transmission, thereby improving the efficiency and quality of the laser beam.

The geometry of the lens includes a thickness of 2.63mm at the edge and 3.5mm at the center, providing a balanced structure for efficient light transmission. The effective focal length (EFL) is 175.0mm, and the radius of curvature (R1) is 90.47mm. The back focal length (BFL) is 172.85mm, and both the inner and outer radii are 0mm, indicating a uniform curvature.

This lens is available from Edmund Optics and is currently in stock, making it a readily available option for your optical system needs. The provided web link offers more detailed information and the opportunity to purchase the lens directly from the vendor.