Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
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.
Asahi Kogaku Kogyo Kabushiki Kaisha
Keesee LaCharles P.
Turner Samuel A.
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