[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 .b^!f<j  
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High-precision prisms, having maximum angle tolerances b*{UO  
of 1 to 3 arcsec, find increasing application in optical metrology. <U\
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Reported interferometric techniques for measuring ~`B]G  
the wedge angles of such prisms achieve a precision of up ya,-Lt  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques |`{$Ego:  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric 6:`[Fi  
methods have made use of goniometers,2 J+N -+,,  
spectrometers,3 master prisms,4,5 and collimators.6 However, sB^ejH  
in the literature there are few reported methods for 'iDkAmvD  
measuring the pyramidal error, and the majority rely on 6\-u:dvGI?  
visual observation,2,7,8 by which it is only possible to measure ?1] \3nj  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. ?C   
In the new arrangement presented here, one can measure BglbQ'6p  
the prism angle and the pyramidal error separately or in _sy]k A  
combination. This is possible because the measurements m| 7v76(  
are made simultaneously but with different techniques.