[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 c': 4e)  
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High-precision prisms, having maximum angle tolerances J#t8xL  
of 1 to 3 arcsec, find increasing application in optical metrology. $J,$_O6  
Reported interferometric techniques for measuring XW@C_@*J  
the wedge angles of such prisms achieve a precision of up /=A@O !l  
to 0.1 arcsec ~Ref. 1!, while noninterferometric techniques 7~'%ThUb$-  
have a precision of up to 2 arcsec ~Ref. 2!. Reported noninterferometric W- nS{v(  
methods have made use of goniometers,2 RrYNtc  
spectrometers,3 master prisms,4,5 and collimators.6 However, s0/m qZ]s  
in the literature there are few reported methods for jp@X,HES  
measuring the pyramidal error, and the majority rely on csxn"Dz\  
visual observation,2,7,8 by which it is only possible to measure ,dw\y/d
n  
pyramidal errors to the order of 1 arcmin ~Ref. 8!. Q~k|lTf  
In the new arrangement presented here, one can measure ^tWSu?9  
the prism angle and the pyramidal error separately or in W1t_P&i  
combination. This is possible because the measurements m}zXy\  
are made simultaneously but with different techniques.