37-440 50mm Dia. N-SF6 Precision Aspheric Lens; EFL=50mm; NA=0.5 Uncoated

The 37-440 is a high-precision aspheric lens, boasting a 50mm diameter and a numerical aperture of 0.5, making it an ideal choice for applications requiring a high level of optical precision. This lens is crafted from N-SF6 Schott, a high-quality optical glass known for its excellent transmittance and chemical resistance.

The lens features a 50mm effective focal length (EFL), which is the distance from the lens's principal point to the focal point when the lens is focused at infinity. This EFL makes the lens suitable for a wide range of applications, including imaging, illumination, and beam shaping.

The geometry of the lens is meticulously designed, with an inner radius of 0mm and an outer radius of 0mm. The lens has a thickness of 5.08mm at the edge and 13.06mm at the center. The aspheric surface of the lens is defined by a series of coefficients, including k1 (-0.7704652), k2 (0), and a suite of higher-order coefficients that are not provided in the data.

Notably, the lens is uncoated, which means it does not have any anti-reflective or other surface coatings. While this may result in higher reflective losses, it can also simplify the optical system and reduce costs.

The lens is currently in stock and available for purchase from Edmund Optics, a leading vendor of optical components. For more information, including pricing and availability, please refer to the provided weblink.