[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 Ep./->fOA  
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High-precision prisms, having maximum angle tolerances z3S"1L7  
of 1 to 3 arcsec, find increasing application in optical metrology. t.;._'  
Reported interferometric techniques for measuring p!:oT1U  
the wedge angles of such prisms achieve a precision of up K(upzn*a  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques B(s^(__]  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric _4Eq_w`  
methods have made use of goniometers,2 \a;xJzc9  
spectrometers,3 master prisms,4,5 and collimators.6 However, oZY|o0/9  
in the literature there are few reported methods for ?y>ji1  
measuring the pyramidal error, and the majority rely on xgIb6<qwY  
visual observation,2,7,8 by which it is only possible to measure )JTQZ,f3]  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. nn:'<6"oV  
In the new arrangement presented here, one can measure uNuFD|aQ.  
the prism angle and the pyramidal error separately or in R~a9}&  
combination. This is possible because the measurements KQ]sUNH  
are made simultaneously but with different techniques.