[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 /ACau<U]t  
A[uB)wWsn  
High-precision prisms, having maximum angle tolerances  '3xK1Am  
of 1 to 3 arcsec, find increasing application in optical metrology. A[m<xtm5K  
Reported interferometric techniques for measuring Cng_*\=O  
the wedge angles of such prisms achieve a precision of up FmgMd)#  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques -FW
^fGS+  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric ahFK^ #s
 
methods have made use of goniometers,2 mSGpxZ,IE  
spectrometers,3 master prisms,4,5 and collimators.6 However, S" (Nf+ux  
in the literature there are few reported methods for 0bOT&Z^  
measuring the pyramidal error, and the majority rely on #44}Snz  
visual observation,2,7,8 by which it is only possible to measure t+D= @"BZP  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. `cP
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In the new arrangement presented here, one can measure MeV*
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the prism angle and the pyramidal error separately or in k]~$AaNq  
combination. This is possible because the measurements yT[=!M  
are made simultaneously but with different techniques.