Abstract
Employing a vector–matrix method, the intensity of diffusely scattered light from a cone and paraboloid of revolution is calculated in the geometrical optics approximation. For the two quadric surfaces considered, different cases, determined principally by the direction of incident light and observer vectors, are examined. As a first approximation, multiple scattering is neglected in instances for which the surfaces are considered concave with respect to source and observer directions. When illuminated and viewed as convex surfaces, the effects of shadowing are introduced for those special orientations of light and observer vectors that permit easy determination of the geometry of the shadow lines.
© 1968 Optical Society of America
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