释义 |
huy·ge·ni·an eyepiece \(ˈ)hīˈgēnēən-, (ˈ)hȯi-\ noun also huy·gens eyepiece \ˈhīgənz-, ˈhȯi-\; or huy·ghe·ni·an eyepiece Usage: usually capitalized H Etymology: huyghenian irregular from Christian Huygens (or Huyghens) died 1695 Du. physicist + English -ian : a compound eyepiece used especially with achromatic objectives that consists of two plano-convex lenses separated by a diaphragm with the convex sides facing the objective |