[論文]Measuring the angles and pyramidal error of high-precision prisms [復(fù)制鏈接]

Measuring the angles and pyramidal error of high-precision prisms ei;
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High-precision prisms, having maximum angle tolerances ~4[2{M.0>@  
of 1 to 3 arcsec, find increasing application in optical metrology. U`JzE"ps]  
Reported interferometric techniques for measuring <
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the wedge angles of such prisms achieve a precision of up R0;c'W)  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques $EbxV"b+  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric *$x/(!UE  
methods have made use of goniometers,2 f)q\RJA)X  
spectrometers,3 master prisms,4,5 and collimators.6 However, )#MKOsOct  
in the literature there are few reported methods for ,~FyC_%*  
measuring the pyramidal error, and the majority rely on (|Am  
visual observation,2,7,8 by which it is only possible to measure !arcQ:T@G  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. -[s*R%w  
In the new arrangement presented here, one can measure j-ugsV`2=*  
the prism angle and the pyramidal error separately or in [UquI "  
combination. This is possible because the measurements Z~8Xp  
are made simultaneously but with different techniques.