Watson image shearing eyepiece

Determining fiiament diameter using a Watson image shearing eyepiece 

Double images of object exactly superimposed. Prism faces paraiiei zero shear. 

Images of object apart. Amount of shear greater than object dimension. 

Sample number Laser diameter Vickers image splitting eyepiece diameter m 

When a filament is illuminated by a laser, the dififraction pattern will be very similar to a rectangular aperture or slit [2]. The slit approximation theory gives  

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Image-splitting optical microscopy was developed to reduce observer error [Watson image-shearing eyepiece [4], Fleming particle size analyzer [99]]. These... 

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