The Achromatic Lens
المؤلف:
GEORGE A. HOADLEY
المصدر:
ESSENTIALS OF PHYSICS
الجزء والصفحة:
p-475
2025-12-20
14
Achromatism, or the formation of images without colored fringes, is secured by combining a plano-concave lens of flint glass with a double convex lens of crown glass. These are of such curvatures that the dispersion of one is neutralized by that of the other, while the refraction is retained. The refraction of the combination is less, however, than that of the double convex lens alone.
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