Used for converging or focusing of light, as well as for collimating point sources. Cost-effective alternative to a positive best-form lens when used at infinite conjugate ratio, with collimated light incident upon the convex side. Reduced spherical aberration and near-zero coma when used off-axis.
Used for 1:1 imaging, beam expanders, and beam relay applications. Good positive lens for virtual imaging of real objects and for positive conjugate image ratios from approximately 0.2 to 5 (depending on wavelength). Can also be used for focusing applications at lower f-number. It performs like a bestform singlet lens when used at unit conjugate ratio.
Used to expand light or to increase focal lengths in optical systems, or to balance aberrations from other lenses within a system. Negative focal length diverges collimated incident light. Spherical aberration, and coma are reduced when used at infinite conjugate ratio with collimated light incident upon the concave side.
Used for converging or focusing of light, as well as for collimating point sources. Designed and manufactured to minimize coma and spherical aberrations in focusing applications, positive bestform lenses are of exceptional performance and provide the smallest spot size available in a singlet lens.