The first lens group (G1) receives a light flux entering along a first optical axis (A1).

第一透镜组(G1)取入沿第一光轴(A1)入射的光束。

Telecentric lens has parallel chief ray with its optical axis and is ideal for co-axial lighting.

远心镜头拥有与它的光轴平行的主光线，同轴照明是非常理想的。

The optical axis of uniaxial substrate is either perpendicular or parallel to the substrate plane.

单轴介质的光轴方向既可平行又可垂直于介质分界面。

The method of tuning is rotating the wave-plate by the axial direction parallel to the optical axis.

调谐的方法是使石英波片绕平行于光轴的轴向转动。

A new method of optical axis alignment for RIM optical sensors based on image processing is presented.

提出了一种基于图像处理的反射式强度调制型光电传感器光路调整方法。