[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 };|PFWs  
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High-precision prisms, having maximum angle tolerances ~h^}W$pO  
of 1 to 3 arcsec, find increasing application in optical metrology.
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Reported interferometric techniques for measuring %M,d
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the wedge angles of such prisms achieve a precision of up \`p~b(  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques v yLAs;  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric -z 5k4Y  
methods have made use of goniometers,2 nM.?Q}yO~  
spectrometers,3 master prisms,4,5 and collimators.6 However, yDyeP{  
in the literature there are few reported methods for C94UF7al  
measuring the pyramidal error, and the majority rely on ;7n*PBUJJ  
visual observation,2,7,8 by which it is only possible to measure dbUZGn~  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. FeeWZe0i  
In the new arrangement presented here, one can measure v{{2<,l  
the prism angle and the pyramidal error separately or in "`3^MvC  
combination. This is possible because the measurements TX [%s@C  
are made simultaneously but with different techniques.