Abstract
Angle diversity is widely used for speckle noise
reduction in laser projector system. In this paper, the limitation
of the existing model for illumination angles producing uncorrelated
speckle patterns is discussed. A three-dimensional model of the variation
illumination angles in spherical coordinate system is set up. A new
parameter
$\Delta{\mmb\phi}$
is brought in and the formula of the magnitude of the transverse
component of the scattering vector difference is derived. Based on
the new derivation, the minimal angle difference is investigated theoretically
and numerical calculation in spherical coordinate system.
© 2015 IEEE
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