355397-C 7.2 mm Dia. D-ZLAF52LA Molded Glass Aspheric Lenses; EFL=11 mm; NA=0.3 AR 1050-1700nm

The 355397-C is a high-quality aspheric lens, precision-molded from D-ZLAF52LA glass, a material with a broad transmission range from 1050 to 1700nm. This lens is designed with a circular base shape and a diameter of 7.2 mm, making it suitable for a wide range of optical applications.

The lens features an effective focal length (EFL) of 11 mm, which is the distance from the lens's center to the focal point when the lens is imaging an object at infinity. This EFL, combined with the lens's 0.3 numerical aperture (NA), allows for a wide field of view and high light-gathering capability.

The lens's geometry is carefully crafted, with a center thickness of 1.947 mm and an edge thickness of 1.282 mm. The front and back surfaces of the lens have aspheric shapes, defined by their respective radii (r1 and r2) and conic constants (k1 and k2). These aspheric shapes help to minimize spherical aberration, improving the lens's imaging performance.

The lens is coated with a broadband anti-reflection coating, applicable to both the front and back surfaces. This coating, identified as "tho c bbar," reduces reflective losses, enhancing the lens's transmission efficiency and overall performance.

This lens is available from Thorlabs and is currently in stock, according to the vendor's website. For more information, including detailed specifications and purchasing options, please refer to the provided weblink.