[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]FaEQVoE  
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High-precision prisms, having maximum angle tolerances cO
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of 1 to 3 arcsec, find increasing application in optical metrology. hrs#ZZ:E  
Reported interferometric techniques for measuring 8K\'Z  
the wedge angles of such prisms achieve a precision of up < /;Q8;
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to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques OUEI~b1  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric J [ YtA  
methods have made use of goniometers,2 Gb(C#,xbK  
spectrometers,3 master prisms,4,5 and collimators.6 However, .FIt.XPzv  
in the literature there are few reported methods for 1t/dxB;  
measuring the pyramidal error, and the majority rely on 1~}m.ER  
visual observation,2,7,8 by which it is only possible to measure =X-^YG3x  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. g.64Id  
In the new arrangement presented here, one can measure lGdM80f  
the prism angle and the pyramidal error separately or in p91`<>Iw  
combination. This is possible because the measurements KX?o nsZ  
are made simultaneously but with different techniques.