Measuring method and apparatus of roof surface

Details Measuring method and apparatus of roof surface Measuring method and apparatus of roof surface

1992-01-24

1993-06-08

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356353, 356354, G01B 1126

Patent

active

052184250

ABSTRACT:
A roof surface measuring method including the making of a collimated bundle of rays incident upon roof surfaces at a predetermined incident angle, laterally displacing a part of the wavefront reflected by the roof surfaces in a direction parallel with an edge line defined by the intersection of the roof surfaces by a displacing means, and making the laterally displaced wavefront and the original wavefront incident upon a measuring surface in a manner which causes an interference therebetween. The invention is also directed to a measuring apparatus for effecting the method.

REFERENCES:
Ballard, Stanley; Optical Shop Testing; pp. 108-111 and 134-135; 1978.

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