sichuan-yunnan prism block 川滇菱形块体
The Laser Angle sensor consists of a block prism and a hologram grating. The principled experiment has been finished by visual measurement of fringes, and is introduced in this paper.
激光角度传感器由立方角棱镜和全息光栅组成，本文完成了目测条纹下的原理性实验。
Instead of the solid block of glass of the prism in pentaprism system, here 3 simple mirrors are used to perform the same task.
五面镜不是用一整个玻璃棱镜，而是用3块镜子来达到相同的目的。
The shape of block stones shall be close to straight prism or regular quad or polygons.
块石形状应接近直棱柱体，或有规则的四边形或多边形。
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