[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 R1$s1@3I|  
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High-precision prisms, having maximum angle tolerances .af+h<RG4$  
of 1 to 3 arcsec, find increasing application in optical metrology. EDT9O  
Reported interferometric techniques for measuring GXaPfC0-y  
the wedge angles of such prisms achieve a precision of up hCBre5  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques ?lE&ow  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric dBw7l}  
methods have made use of goniometers,2 3{)!T;Wd  
spectrometers,3 master prisms,4,5 and collimators.6 However, fUMjLA|*I<  
in the literature there are few reported methods for !\VzX  
measuring the pyramidal error, and the majority rely on {p.^E5&  
visual observation,2,7,8 by which it is only possible to measure 3n,jrX75u  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. qv
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In the new arrangement presented here, one can measure %oB0@&!mS  
the prism angle and the pyramidal error separately or in Q5c3C&$6  
combination. This is possible because the measurements 'ZJb`  
are made simultaneously but with different techniques.