[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 Dv L8}dz  
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High-precision prisms, having maximum angle tolerances QleVW  
of 1 to 3 arcsec, find increasing application in optical metrology.
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Reported interferometric techniques for measuring }/h&`0z`  
the wedge angles of such prisms achieve a precision of up :Ocw+X3  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques t`{T:Tjc  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric 7S^G]g!x  
methods have made use of goniometers,2 $zU
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spectrometers,3 master prisms,4,5 and collimators.6 However, #HW<@E  
in the literature there are few reported methods for tK/.9qP  
measuring the pyramidal error, and the majority rely on U]w"T{;@.)  
visual observation,2,7,8 by which it is only possible to measure k#u)+e.'  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. t1"#L_<e  
In the new arrangement presented here, one can measure Zd%wX<hU"  
the prism angle and the pyramidal error separately or in biBMd(6  
combination. This is possible because the measurements 6y1\ar(A  
are made simultaneously but with different techniques.