37-434 30mm Dia. N-SF5 Precision Aspheric Lens; EFL=30mm; NA=0.5 Uncoated

The 37-434 is a high-precision aspheric lens, part of the extensive catalog offered by Edmund Optics. This lens is characterized by its 30mm diameter and a numerical aperture (NA) of 0.5, making it suitable for a wide range of optical applications. The lens is made from N-SF5 Schott, a high-refractive-index glass that is often used in high-performance optical systems.

The lens features an effective focal length (EFL) of 30mm, which is the distance from the lens's principal point to the focal point when the lens is focused at infinity. This EFL, combined with the lens's NA, allows for a wide field of view and high light-gathering capability.

The lens's geometry is defined by several key parameters. The inner radius is 0, indicating that the lens is a meniscus lens. The outer radius is also 0, suggesting that the lens is a plano-convex lens. The thickness at the edge is 6.59mm, and the thickness at the center is 12.5mm. The lens's conic constant (k1) is -1.437343, indicating a moderately aspheric surface.

Notably, this lens is uncoated. While coatings can enhance a lens's performance by reducing reflections and increasing transmission, uncoated lenses can be advantageous in certain applications, such as those involving ultraviolet or vacuum environments.

The lens's web links are valid and indicate that it is in stock, making it readily available for immediate use in your optical system.