[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 ["Ts7;q9[  
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High-precision prisms, having maximum angle tolerances C_Q3
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of 1 to 3 arcsec, find increasing application in optical metrology.
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Reported interferometric techniques for measuring _xCYh|DlQ|  
the wedge angles of such prisms achieve a precision of up \f^xlX3&`  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques w6!97x  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric ?K7uy5Y  
methods have made use of goniometers,2 }Mt
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spectrometers,3 master prisms,4,5 and collimators.6 However, qA!p7"m|  
in the literature there are few reported methods for g&y (-  
measuring the pyramidal error, and the majority rely on N? Jy  
visual observation,2,7,8 by which it is only possible to measure P'tXG  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. Dch\k<Te  
In the new arrangement presented here, one can measure uOzoE_i
 
the prism angle and the pyramidal error separately or in xA7~"q&u  
combination. This is possible because the measurements rIFW1`N}i  
are made simultaneously but with different techniques.