Light collection quality, reduced aberration for low to medium energy applications; 400 nm – 2 μm. Ideal for low f-number, high-throughput light collection applications, these aspheric optical crown glass lenses are an economical choice for reducing aberrations, but are not recommended for imaging, precise focusing, or high energy applications.They are available in a range of standard focal lengths and diameters, with optional 400-700 MgF2 AR coatings.

Aspheric glass condenser lenses are used for low to medium energy light collection applications requiring a low cost, positive lens at visible and near-infrared wavelengths.  Aspheric lenses provide better performance than bi-convex lenses by reducing aberrations when used in low f-number, high-throughput applications.  These lenses have one aspheric surface; the second surface is flat, or spherical-convex.  A flat second surface minimizes aberration, while a spherical-convex second surface provides the lowest f-number and highest transmission because equal deviation of marginal rays is most closely approached.  Aspheric glass condenser lenses are not recommended for imaging, precise focusing, or high energy applications.
• Focal lengths from 8.5 mm to 53 mm
• Diameters from 12 mm to 75 mm
• Available uncoated or with a single-layer MgF2 AR coating, 400 to 700 nm