Achromatic lens
a system of two or more lenses that is substantially free from chromatic aberration and in which the lenses are made of different substances so that the focal length of the system is the same for two or three wavelengths of light.
historical examples
the achromatic lens consists of a double convex lens of crown gl-ss combined with a plano-concave lens of flint gl-ss.
physics willis eugene tower
if not, the subst-tution of an achromatic lens will be of no advantage.
encyclopaedia britannica, 11th edition, volume 8, slice 4 various
a similar argument may be applied to find at what point an achromatic lens becomes sensibly superior to a single one.
encyclopaedia britannica, 11th edition, volume 8, slice 4 various
it was this accuracy of convergence of the light which led dr. draper to prefer the mirror to the achromatic lens.
atlantic monthly, vol. xii. july, 1863, no. lxix. various
achromatic lens n.
a combination of lenses made of different gl-ss, used to produce images free of chromatic aberrations.
Read Also:
- Achromatic objective
achromatic objective achromatic objective n. an objective that is corrected for two colors chromatically and for one color spherically.
- Achromatic prism
a system of two or more prisms of different substances that deflects but does not disperse a beam of light.
- Achromatic vision
achromatic vision achromatic vision n. see achromatopsia.
- Achromatize
to make ; deprive or free of color. verb (transitive) to make achromatic; to remove colour from
- Achromatin
noun the material of the nucleus of a cell that does not stain with basic dyes compare chromatin achromatin a·chro·ma·tin (ā-krō’mə-tĭn) n. the part of a cell nucleus that remains less colored than the rest of the nucleus when stained or dyed. a·chro’ma·tin’ic adj.