69-399 25.0mm Dia. x 85.0mm FL; Plano-Convex Lens Laser V-Coat 532nm

The 69-399 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 85.0mm, making it suitable for applications that require a high degree of magnification or precision. The lens is fabricated from the high-quality material n-BK7 Schott, a borosilicate crown glass known for its excellent optical properties, including high transmission in the visible spectrum and low dispersion.

The lens features a V-coat 532nm coating on both the front and back surfaces. This coating is specifically designed for use with 532nm lasers, enhancing the lens's performance and durability in laser applications. The coating provides high reflectivity at the specified wavelength, making it ideal for use in laser systems, interferometry, and other applications where precise control of light is required.

The geometry of the lens includes a thickness of 2.45mm at the edge and 4.3mm at the center. The lens's effective focal length (EFL) is 85.0mm, and the radius of curvature (R1) is 43.93mm. The back focal length (BFL) is 82.17mm, and both the inner and outer radii are 0mm.

This lens is available from Edmund Optics and is currently in stock, according to the vendor's website. The item data suggests that this lens would be an excellent choice for applications involving 532nm lasers, high magnification, or precision optical systems.