[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 m(q6Xe:Vc  
GK)3a 9;  
High-precision prisms, having maximum angle tolerances V.)y7B  
of 1 to 3 arcsec, find increasing application in optical metrology. qF`;xa%,}  
Reported interferometric techniques for measuring O_K@\<;~  
the wedge angles of such prisms achieve a precision of up /%po@Pm#I  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques 6[$kEKOY=  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric `IOp*8  
methods have made use of goniometers,2 p^Ca-+R3  
spectrometers,3 master prisms,4,5 and collimators.6 However, 7J~6J.m  
in the literature there are few reported methods for .{k(4_Q?I  
measuring the pyramidal error, and the majority rely on UBOCd[  
visual observation,2,7,8 by which it is only possible to measure }oYR.UH  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. nT`NfN  
In the new arrangement presented here, one can measure ;!, ]}2w*X  
the prism angle and the pyramidal error separately or in 6?Q&>V26Y  
combination. This is possible because the measurements Fe.Y4\xz  
are made simultaneously but with different techniques.