37-421 15mm Dia. N-SF6 Precision Aspheric Lens; EFL=18.75mm; NA=0.4 Uncoated

The 37-421 is a high-precision aspheric lens, 15mm in diameter, with a numerical aperture (NA) of 0.4, and uncoated. This lens is sourced from the reputable optical vendor, Edmund Optics. It is designed for use with a wavelength of 587.6nm, making it suitable for a wide range of optical applications.

The lens features a high-quality N-SF6 Schott material, which is known for its excellent optical properties. The aspheric design of the lens helps to reduce spherical aberration, providing superior image quality compared to traditional spherical lenses. The lens has an effective focal length (EFL) of 18.75mm, making it suitable for use in moderate to high magnification optical systems.

The geometry of the lens includes an inner radius of 0mm, an outer radius of 0mm, a thickness at the edge of 6.1mm, and a thickness at the center of 8mm. The lens also features a back focal length (BFL) of 14.32mm. The aspheric surface of the lens is defined by the coefficients k1, k2, and r1, which are 0.0204531, 0, and 15.097 respectively.

The lens is uncoated, which can be beneficial in certain applications where a specific coating is not required. However, it is important to note that uncoated lenses can be more susceptible to surface reflections and may not perform as well in high-light applications.

The lens is currently in stock and available for purchase through the Edmund Optics website. The link to the product page is provided in the item data for your convenience.