[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 9
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High-precision prisms, having maximum angle tolerances U`,&Q]  
of 1 to 3 arcsec, find increasing application in optical metrology. RV.zxPw>>  
Reported interferometric techniques for measuring ];R5[%:5  
the wedge angles of such prisms achieve a precision of up n>Y3hY  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques :bE ^
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have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric -WB?hmx  
methods have made use of goniometers,2 
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spectrometers,3 master prisms,4,5 and collimators.6 However, oB-&ma[ZS  
in the literature there are few reported methods for 7,!Mmu  
measuring the pyramidal error, and the majority rely on K)]7e?:Wu  
visual observation,2,7,8 by which it is only possible to measure yrdJX  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. ":"QsS#*"#  
In the new arrangement presented here, one can measure H:`W\CP7_  
the prism angle and the pyramidal error separately or in RI:x`do  
combination. This is possible because the measurements <.HHV91  
are made simultaneously but with different techniques.