[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 jg
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High-precision prisms, having maximum angle tolerances '*~{1gG `  
of 1 to 3 arcsec, find increasing application in optical metrology. uP*>-s'm  
Reported interferometric techniques for measuring v
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the wedge angles of such prisms achieve a precision of up KY"~Ta`  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques =_,OucKkYG  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric ~O^_J)  
methods have made use of goniometers,2 ~;`i&s  
spectrometers,3 master prisms,4,5 and collimators.6 However, J J3vC  
in the literature there are few reported methods for (wA|lK3  
measuring the pyramidal error, and the majority rely on {u5)zVYC,U  
visual observation,2,7,8 by which it is only possible to measure sY#K=5R  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. ^~Ar  
In the new arrangement presented here, one can measure `o*eLLk  
the prism angle and the pyramidal error separately or in H+: $ 7;  
combination. This is possible because the measurements a\MU5%}\  
are made simultaneously but with different techniques.