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Author:
Journal / Book Title:
Year:
Volume:
Issue:
bo dai pian de she ji he zhi zao
Author(s):
CHI Guoguang
Pages:
29
-
30+19
Year:
1984
Issue:
1
Journal:
Optical Technique
Keyword:
波带片
;
光能分布
;
高斯分布
;
激光束
;
准直测量
;
光斑
;
位相差
;
透镜焦距
;
基准线
;
望远物镜
;
Abstract:
<正> 一、前言具有TEM
00
模式输出的He-Ne激光束,其光束横断面的光能分布近似于高斯分布,在一定条件下,在相当长的距离内各断面的分布是一致的,这样,能量分布中心的联线就构成了一条理想的直线,可作为准直测量中的基准线。近几年来,国内外相继在水准仪、经纬仪上采用了这一技术。
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