[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 Y
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High-precision prisms, having maximum angle tolerances [,bra8f[C  
of 1 to 3 arcsec, find increasing application in optical metrology. @5RbMf{  
Reported interferometric techniques for measuring iY,FfuE  
the wedge angles of such prisms achieve a precision of up kJ'rtz4QO  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques #Vy8<Vy&w  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric 4 EE7gkM5  
methods have made use of goniometers,2 B}(r>8?dm  
spectrometers,3 master prisms,4,5 and collimators.6 However, ?td`*n~,  
in the literature there are few reported methods for 8
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measuring the pyramidal error, and the majority rely on olv0w;s  
visual observation,2,7,8 by which it is only possible to measure Cg8
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pyramidal errors to the order of 1 arcmin ~Ref. 8!. :kMF.9U:  
In the new arrangement presented here, one can measure AAXlBY6Y-  
the prism angle and the pyramidal error separately or in \V(w=  
combination. This is possible because the measurements FG:t2ea  
are made simultaneously but with different techniques.