[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 8|\ -(:v  
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High-precision prisms, having maximum angle tolerances jxm#4  
of 1 to 3 arcsec, find increasing application in optical metrology. kxEq_FX  
Reported interferometric techniques for measuring [9 :9<#?o^  
the wedge angles of such prisms achieve a precision of up %r
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to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques >+;}"J
 
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric ,/V~T<FI  
methods have made use of goniometers,2 U
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spectrometers,3 master prisms,4,5 and collimators.6 However, . bUmT!  
in the literature there are few reported methods for lg )xQV  
measuring the pyramidal error, and the majority rely on ~(tt.l#  
visual observation,2,7,8 by which it is only possible to measure dZ*&3.#D5  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. ARnq~E@1  
In the new arrangement presented here, one can measure ,+h<qBsV@  
the prism angle and the pyramidal error separately or in I H#CaD  
combination. This is possible because the measurements v)|a}5={  
are made simultaneously but with different techniques.