[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 F_qApyU,7  
05 6K)E  
High-precision prisms, having maximum angle tolerances KR( apO  
of 1 to 3 arcsec, find increasing application in optical metrology. lwQ!sH[M  
Reported interferometric techniques for measuring M7/5e3  
the wedge angles of such prisms achieve a precision of up 9 Zos;  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques ArtY;.cg%  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric bo=H-d|  
methods have made use of goniometers,2 u&l;\w  
spectrometers,3 master prisms,4,5 and collimators.6 However, MLV]+H[mt  
in the literature there are few reported methods for QZVyU8j3  
measuring the pyramidal error, and the majority rely on 9K&$8aD  
visual observation,2,7,8 by which it is only possible to measure }rJqMZ]w  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. c,r6+oX  
In the new arrangement presented here, one can measure c +]r  
the prism angle and the pyramidal error separately or in Tv|'6P  
combination. This is possible because the measurements QT%`=b  
are made simultaneously but with different techniques.