Fused silica lens element

asphericalUVprecision

Alien Photonics Aspheric Lens have non-spherical surface, which helps to correct various optical abberrations. Full customization including material, size, EFL, quality. Optional AR coatings. What is an Asphere (Aspherical Lens)? Aspherical Lenses are optical components that are used to remove spherical aberration and feature a surface with radius of curvature that varies across the entire lens. What is the main function and purpose of Aspheric Lenses? Traditional spherical lens cannot efficiently collimate the light due to spherical aberrations (even at small incidence angles). For effective collimation you might need several optical components (multi-lens system). Asphere’s surface is designed and produced in such a way (not constant radius of curvature) that it removes spherical aberration. How Aspheric Lenses (Asheres) are made? Most common ways to produce apsheres are molding or CNC-based polishing. For many critical or high-power laser applications, the choice often leans towards CNC polished aspherical lenses due to their superior surface quality, thermal stability and other factors thate lead to beam consistency. However, molded lenses might find their place in applications where these factors are less critical, and cost or mass production is a primary concern. Alien Photonics precision aspherical lenses are made using CNC glass polishing technology. Once design is confirmed, the blank glass material is polished using computer numerical control (CNC) glass polishing machines. After that (optionally) anti-reflective thin film coating is applied to reduce unwanted reflections.