[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 0 `Yg  
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High-precision prisms, having maximum angle tolerances Q1cM{$}M  
of 1 to 3 arcsec, find increasing application in optical metrology. 'Gr}<B$A3  
Reported interferometric techniques for measuring -&AgjzN!  
the wedge angles of such prisms achieve a precision of up xsPY#  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques SxAZ2|/-  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric /o$C=fDF  
methods have made use of goniometers,2 EFd9n  
spectrometers,3 master prisms,4,5 and collimators.6 However, ^HO'"/tB@D  
in the literature there are few reported methods for p!b_tyJ  
measuring the pyramidal error, and the majority rely on &bIE"ZBjt  
visual observation,2,7,8 by which it is only possible to measure |8DMj s()*  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. )z:"P;b"Nl  
In the new arrangement presented here, one can measure ~8A !..Z  
the prism angle and the pyramidal error separately or in n`W7g@Sg#I  
combination. This is possible because the measurements ##_`)/t,  
are made simultaneously but with different techniques.