[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 d<T%`:s<  
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High-precision prisms, having maximum angle tolerances qu{mqkfN>  
of 1 to 3 arcsec, find increasing application in optical metrology. K8Zt:yP  
Reported interferometric techniques for measuring r_o<SH  
the wedge angles of such prisms achieve a precision of up (2txM"Dja  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques 0X"\ a'M_  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric )U98  
methods have made use of goniometers,2 &L3#:jSk  
spectrometers,3 master prisms,4,5 and collimators.6 However, L#j/0IHD  
in the literature there are few reported methods for L3c*LL  
measuring the pyramidal error, and the majority rely on k|j:T[_  
visual observation,2,7,8 by which it is only possible to measure TVkcDS  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. /bcY6b=:  
In the new arrangement presented here, one can measure [b1hC ~I;  
the prism angle and the pyramidal error separately or in htHv&  
combination. This is possible because the measurements ,U=E[X=
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are made simultaneously but with different techniques.