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Huygens eyepiece
noun
, Optics.
- an eyepiece consisting of two plano-convex lenses, the plane sides of which both face the eye.
Huygens' eyepiece
/ ˈhaɪɡənz /
noun
- physics a telescope eyepiece consisting of two planoconvex lenses separated by a distance equal to half the sum of their focal lengths, which are in the ratio of three to one, and oriented so that their curved surfaces face the incident light
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Word History and Origins
Origin of Huygens eyepiece1
First recorded in 1830–40; named after C. Huygens
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Word History and Origins
Origin of Huygens eyepiece1
C19: named after Christiaan Huygens (1629–95), Dutch physicist
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