47-919 25mm Dia. x -100mm FL; VIS 0deg Coated; Double-Concave Lens 425-675nm

The 47-919 is a high-quality spherical lens, boasting a double-concave design and a base shape of a circle. This lens, sourced from the reputable vendor Edmund Optics, is a 25mm diameter by -100mm focal length (FL) model, specifically designed for the visible light spectrum (425-675nm).

The lens's geometry is meticulously crafted, with an edge thickness of 6.43mm and a center thickness of 5mm. The effective focal length (EFL) is -100mm, and the radii of curvature are -104.2mm for the first surface and 104.2mm for the second surface. The back focal length (BFL) is -101.64mm. The lens's inner and outer radii are both 0, indicating a uniform curvature throughout.

The lens is made from the renowned material N-BK7 Schott, a borosilicate crown glass known for its excellent optical properties. The lens's coating is a standard EDmund Visible (VIS) 0-degree coating, designed to enhance transmission and reduce reflection in the visible light spectrum.

This lens is a versatile and reliable choice for various applications, offering superior optical performance and durability. With its detailed specifications and high-quality construction, the 47-919 is an excellent option for those seeking a top-tier double-concave lens for their optical system.