介绍一种根据出射光平行度要求计算斜方棱镜面形误差的方法。
A calculation method to calculate the surface shape error of rhombic prism according to parallelism demand of emergent beam is introduced.
塑料指示头内表面制成多棱镜面，能反射各种角度的光线，非常醒目。
The inner surface of the plastic indicating head is made into a polygonal mirror surface, so the direction indicating device which can reflect light rays of various angles is very conspicuous.
塑料指示头内表面制成多棱镜面，能反射各种角度的光线，非常醒目。
The inner surface of the plastic indicating head is made into a polygonal mirror surface, so the direction indicating device which can reflect light rays of various angles is very conspicuous.
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