[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 iV/I909*''  
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High-precision prisms, having maximum angle tolerances .2c/V  
of 1 to 3 arcsec, find increasing application in optical metrology. chL1r9V)v  
Reported interferometric techniques for measuring dvjj"F'Bf  
the wedge angles of such prisms achieve a precision of up GGEM&0*  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques GIzB1cl:  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric exJc[G&t(  
methods have made use of goniometers,2 x7/Vf,N  
spectrometers,3 master prisms,4,5 and collimators.6 However, ]Z5m_-I  
in the literature there are few reported methods for |\Jnr3)  
measuring the pyramidal error, and the majority rely on *"WP*A\1  
visual observation,2,7,8 by which it is only possible to measure 53{\H&q  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. N\*oL*[j  
In the new arrangement presented here, one can measure IMwV9rF  
the prism angle and the pyramidal error separately or in :41Y  
combination. This is possible because the measurements $6mShp9(  
are made simultaneously but with different techniques.