69-648 50mm Dia. x 100mm FL; Uncoated; Ge Plano-Convex Lens

The 69-648 is a Plano-Convex lens with a diameter of 50mm and a focal length of 100mm, sourced from Edmund Optics. This lens is made of Germanium burnett, a material known for its excellent optical properties, particularly in the infrared spectrum. The lens's base shape is circular, and it features a plano-convex geometry, meaning one side is flat while the other is curved.

The lens has an inner radius of 0 and an outer radius of 0, indicating a uniform curvature. The thickness at the edge of the lens is 2.96mm, while the center thickness is 4mm. The effective focal length (EFL) is 100mm, and the back focal length (BFL) is 99mm. The lens is uncoated, which means it does not have any additional layers to enhance its optical performance or protect it from environmental factors.

This lens is suitable for applications that require a high-quality, infrared-transmitting lens with a long focal length. However, its uncoated surface may be susceptible to scattering and absorption, which could affect image quality. Therefore, it's essential to consider these factors when deciding whether this lens is suitable for your specific application.

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