[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 AMk~dzNt  
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High-precision prisms, having maximum angle tolerances  .fJ*c  
of 1 to 3 arcsec, find increasing application in optical metrology. 7c::Qf[|  
Reported interferometric techniques for measuring VG#Q;
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the wedge angles of such prisms achieve a precision of up ]P*!'iYN(  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques $^Ca:duk  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric R=35 7^[R  
methods have made use of goniometers,2 QGPR.<D)B  
spectrometers,3 master prisms,4,5 and collimators.6 However, },6*Y*?{  
in the literature there are few reported methods for 37KU~9-A  
measuring the pyramidal error, and the majority rely on v*L '{3f  
visual observation,2,7,8 by which it is only possible to measure ylkqhs&  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. ^/{4'\p  
In the new arrangement presented here, one can measure 4e/cqN6  
the prism angle and the pyramidal error separately or in ,o)4p\nV  
combination. This is possible because the measurements ;o >WXw  
are made simultaneously but with different techniques.