[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 ,v^it+Jc'  
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High-precision prisms, having maximum angle tolerances L'Wcb =;  
of 1 to 3 arcsec, find increasing application in optical metrology. $U6)km4  
Reported interferometric techniques for measuring c8u&ev.U  
the wedge angles of such prisms achieve a precision of up +XIN
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to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques lw Kr$X4  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric 8 {QvB"w  
methods have made use of goniometers,2 K1$Z=]a+  
spectrometers,3 master prisms,4,5 and collimators.6 However, a1j6-p  
in the literature there are few reported methods for &-{4JSII  
measuring the pyramidal error, and the majority rely on }2{%V^D)r  
visual observation,2,7,8 by which it is only possible to measure _-h3>.;h9  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. IYrO;GQ  
In the new arrangement presented here, one can measure O!|:
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the prism angle and the pyramidal error separately or in {j(,Q qB;f  
combination. This is possible because the measurements "%sW/ph  
are made simultaneously but with different techniques.