[论文]Measuring the angles and pyramidal error of high-precision prisms [复制链接]

Measuring the angles and pyramidal error of high-precision prisms +,g3Xqs}X  
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High-precision prisms, having maximum angle tolerances &~Hx!]uc  
of 1 to 3 arcsec, find increasing application in optical metrology. o;kxu(>yL'  
Reported interferometric techniques for measuring R:+cumHr  
the wedge angles of such prisms achieve a precision of up  `1`Qu!  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques <u_vL WS  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric $-i(xnU/nl  
methods have made use of goniometers,2 S+ 3lX7  
spectrometers,3 master prisms,4,5 and collimators.6 However, 4'~zuUs
 
in the literature there are few reported methods for fxQ4kiI  
measuring the pyramidal error, and the majority rely on |Cm6RH$(  
visual observation,2,7,8 by which it is only possible to measure w}qLI4  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. \\ZCi`O  
In the new arrangement presented here, one can measure `s8o2"12  
the prism angle and the pyramidal error separately or in H~NK:qRzK  
combination. This is possible because the measurements &cp
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are made simultaneously but with different techniques.