[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 ,E2c9V'  
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High-precision prisms, having maximum angle tolerances "j=E8Dd}  
of 1 to 3 arcsec, find increasing application in optical metrology. w=[ITQ|W%  
Reported interferometric techniques for measuring 'K|F{K  
the wedge angles of such prisms achieve a precision of up 5IbCE.>iU  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques ^j2z\yo  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric u`pw'3hY
 
methods have made use of goniometers,2 VgS2_TU  
spectrometers,3 master prisms,4,5 and collimators.6 However,
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in the literature there are few reported methods for ,W>-MPJn[8  
measuring the pyramidal error, and the majority rely on SGpe\P]k  
visual observation,2,7,8 by which it is only possible to measure }'h\;8y  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. Q>TNzh  
In the new arrangement presented here, one can measure UK.=Y9  
the prism angle and the pyramidal error separately or in 4\ny]A:~  
combination. This is possible because the measurements 6dYa07  
are made simultaneously but with different techniques.