Axial, Chromatic Aberration.—When a ray of white light(Fig. i) passes through the lens LL at g a prism action is exertedon the ray and the white light is broken up into its componentelements. The red component, or the ray of longer wave length,is brought to a focus at a point Pi, farther from the… … Fig. I.—Diagram illustrating axial chromatic aberration chromatic aberration. The amount of chromatic aberration, orthe distance P^ P^, is dependent upon the focal length of the lensand the dispersion of the glass. By combining two lenses ofproper focal lengths and glasses of suitable refractive…
Lenses and optical systems
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