112-5135E 12.7 mm Dia. x -500 mm FL; Uncoated; Plano-Concave Lens

The 112-5135E is a Plano-Concave Lens with a diameter of 12.7 mm and a focal length of -500 mm, making it a negatively powered lens. This lens is sourced from EKSMA Optics, a reputable vendor known for its high-quality optical components. The lens is uncoated, indicating that it does not have any additional layers to protect it from environmental factors or enhance its optical properties.

The lens's geometry is characterized by its base shape, which is circular, and its thickness. The edge thickness is 2 mm, while the center thickness is 1.9 mm. The lens's inner and outer radii are both 0, suggesting a simple, symmetrical design. The lens is made from CAF2 (Calcium Fluoride), a material with a refractive index of 1.43 at 2940 nm, the wavelength for which this lens is designed.

This lens is a Spherical Lens, meaning it has a spherical surface, as opposed to aspherical lenses which have more complex surfaces. The curvature of the lens is defined by its radius of curvature, which is -209.1 mm for this particular lens.

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