[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 ,5}%_  
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High-precision prisms, having maximum angle tolerances 5B6twn~[  
of 1 to 3 arcsec, find increasing application in optical metrology. G*;?&;*  
Reported interferometric techniques for measuring xE>H:YPm  
the wedge angles of such prisms achieve a precision of up ?RW7TWf  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques L_4c~4  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric k*XI/k5Vc  
methods have made use of goniometers,2 \tR](, /  
spectrometers,3 master prisms,4,5 and collimators.6 However, 0Va+l)F  
in the literature there are few reported methods for 24{Tl q3  
measuring the pyramidal error, and the majority rely on o>4mkh[3  
visual observation,2,7,8 by which it is only possible to measure 3XykIj1  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. 5PF?Eq  
In the new arrangement presented here, one can measure |T`ZK?B+u  
the prism angle and the pyramidal error separately or in VZveNz@]r  
combination. This is possible because the measurements 7Yv1et |  
are made simultaneously but with different techniques.