The glass molded aspherical lenses are not only able to correct the spherical aberration through one singlet lens but also have s smaller sizes, higher operating temperatures, higher transmission rates and more stable quality controls in mass production compared to traditional ground spherical lenses. In other words, while a plurality of traditional ground spherical lenses is needed to solve the spherical aberration issues, only one singlet aspherical lens can achieve better performances. As a result, the aspherical lenses are the ideal optical elements to focus or collimate beams An aspherical lens can be characterized by the following Polynomial.learn more...
Z: optical axis
r: radius of curvature
k: Conic constant
a1,a2,...: Polynomial coefficient
|Egismos provides price-competitive glass molded aspherical lenses using the Precision Glass Molding (PGM) technology during the manufacturing process, which allows a shorter manufacturing time thanks to its heating and pressing processes, The conventional glass lenses are still go through the grinding and polishing processes, which are much more time consuming. With the state of the art PGM technology, Egismos provides custom-made glass molded aspherical lenses to meet your unique requirements.|
|CT: Central Thickness
ET: Edge Thickness
BFL: Back Focal Length is the distance from the vertex of the last optical surface of the system to the rear focal point.
EFL: Effective Focal Length is the distance from the rear focal point to the principal plane.
R1: Radius of curvature for the first optical surface