The 36-683 is a 10mm diameter, 25mm focal length uncoated plano-convex lens, specifically designed for UV applications. This lens, sourced from Edmund Optics, is a spherical lens with a base shape of a circle, ensuring a wide field of view and minimal distortion.
The lens geometry is meticulously designed, with a thickness of 1.85mm at the edge and 3mm at the center, providing a balanced structure for optimal performance. The effective focal length (EFL) is 25mm, and the radius of curvature (R1) is 11.46mm, contributing to a back focal length (BFL) of 22.94mm. The lens does not have an inner or outer radius, indicating a uniform surface across the lens.
The lens is made from fused silica (mal-1965), a material known for its excellent transmittance in the UV region. The wavelength for this lens is 587.6nm, which falls within the visible light spectrum. However, the lens's uncoated state enhances its suitability for UV applications, where minimal reflection and high transmittance are crucial.