[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 Dp^6|T*HU  
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High-precision prisms, having maximum angle tolerances !r4
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of 1 to 3 arcsec, find increasing application in optical metrology. `bW0Va N  
Reported interferometric techniques for measuring ;$FMOMR  
the wedge angles of such prisms achieve a precision of up i:7cdhz  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques ]s`cn}d  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric 'W/AYF^5  
methods have made use of goniometers,2 Nzl`mx16  
spectrometers,3 master prisms,4,5 and collimators.6 However, TmEh$M  
in the literature there are few reported methods for -*W\$P  
measuring the pyramidal error, and the majority rely on -+kTw06_C  
visual observation,2,7,8 by which it is only possible to measure 6k;>:[p
 
pyramidal errors to the order of 1 arcmin ~Ref. 8!. L 7l"*w(  
In the new arrangement presented here, one can measure i7\MVI8  
the prism angle and the pyramidal error separately or in  ja^  
combination. This is possible because the measurements yLQwG.,  
are made simultaneously but with different techniques.