49-594 25mm Dia. UVFS Aspheric Lens; EFL=30mm; NA=0.42 NIR 600-1050nm

The 49-594 is a high-performance aspheric lens, designed and manufactured by Edmund Optics. This lens boasts a 25mm diameter and a numerical aperture (NA) of 0.42, making it suitable for a wide range of applications. The lens is made from UV fused silica, a material known for its excellent transparency across a broad spectrum, including the near-infrared (NIR) region of 600-1050nm.

The lens features an effective focal length (EFL) of 30mm, which is the distance over which incident light rays are brought to a focus. This EFL, combined with the lens's NA, allows for a wide field of view and high light-gathering capability. The lens also has a high refractive index, which contributes to its compact size and light weight.

The 49-594 lens features an aspheric surface, which is a type of surface profile that deviates from a simple sphere or cylinder. This design allows for the correction of spherical aberration, a common optical problem that can lead to distorted or blurry images. The lens's geometry includes a center thickness of 8.5mm and an edge thickness of 2.21mm, contributing to its robustness and durability.

The lens is coated with Edmund Optics' NIR coating, designed for the 600-1050nm region. This coating enhances the lens's transmission in the NIR region, reducing reflections and improving image quality. The coating is applied to both the front and back surfaces of the lens, ensuring optimal performance from all angles.