[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 CQns:.`$`  
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High-precision prisms, having maximum angle tolerances o:
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of 1 to 3 arcsec, find increasing application in optical metrology. #JYH5:*  
Reported interferometric techniques for measuring vo"?a~kY7  
the wedge angles of such prisms achieve a precision of up {%BPP{OFk  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques F T$x#>  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric lcR1FbJ
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methods have made use of goniometers,2 d",VOhW7)S  
spectrometers,3 master prisms,4,5 and collimators.6 However, Vv_lBYV  
in the literature there are few reported methods for {'UK>S  
measuring the pyramidal error, and the majority rely on 8zrLl:{  
visual observation,2,7,8 by which it is only possible to measure y[DS$>E  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. VT2f\d[Q  
In the new arrangement presented here, one can measure j58'P 5N  
the prism angle and the pyramidal error separately or in -+z8bZ  
combination. This is possible because the measurements y4N2gBTKu  
are made simultaneously but with different techniques.