The achromatic doublet lens is used to minimize or eliminate chromatic aberration. Its achromatic design also helps to minimize spherical aberration. Compared with a single lens, an achromatic doublet ...

Description: Achromatic Lenses are used to minimize or eliminate chromatic aberration. The achromatic design also helps minimize spherical aberrations. Achromatic Lenses are ideal for a range of ...

1b), and the invention of the achromatic doublet by John Dolland and others ... with the size of apertures rising to reach the physical limits for lens manufacture at a diameter of around one ...

Huygenian Huygens eyepieces are constructed of two plano-convex lenses with both plane sides facing the eye. Periplan Periplan eyepieces are constructed of one achromatic doublet and two plano-convex ...