[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 OC9_EP\"  
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High-precision prisms, having maximum angle tolerances i)P.Omr  
of 1 to 3 arcsec, find increasing application in optical metrology. g>x2[//pk  
Reported interferometric techniques for measuring
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the wedge angles of such prisms achieve a precision of up =Z iyT$p  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques U?d1  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric Ob?>zsx  
methods have made use of goniometers,2 T5&jpP`M  
spectrometers,3 master prisms,4,5 and collimators.6 However, T{bM/?g
 
in the literature there are few reported methods for <DiD8")4  
measuring the pyramidal error, and the majority rely on /yyed{q  
visual observation,2,7,8 by which it is only possible to measure _wKFT>  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. ?7
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In the new arrangement presented here, one can measure *@lNL=%R  
the prism angle and the pyramidal error separately or in w`,[w,t  
combination. This is possible because the measurements }8p;w T!  
are made simultaneously but with different techniques.