[ 名 ]
主軸
,
光学軸
■ 光が反射も屈折もしない、湾曲したレンズの中心を通る直線
a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted
例文 )
・in a normal eye the optic axis is the direction in which objects are seen most distinctly 正常な目において、光学軸は対象が最もはっきり見える方向である
→
principal axis
[ 名 ]
光学軸
■ 複屈折結晶、線の向きに複屈折が全く起こらない
in a doubly refracting crystal, the line in the direction of which no double refraction occurs