The theory of speckle noise in a scanning beam is presented. The general formulas for the
calculation of speckle contrast, which apply to any scanning display, are obtained. It is …

Aberration and defocusing effects in the mechanism of speckle suppression in laser
projection displays were studied using the Fresnel approximation and the thin lens model …

An optical scheme for speckle suppression using two or three partially coherent beams in a
projection system is proposed. Diffractive optical elements (DOE) placed in the intermediate …

Speckle is the main obstacle for the use of laser light sources in projection technology. This
paper focuses on speckle suppression by the reduction of temporal coherence which is …

In laser projection systems the observer in the far field of the image points on the screen will
recognize serious speckle noise. There are many methods to reduce or eliminate speckles …

The mathematical model of a speckle-suppression method based on two Barker code-type
diffractive optical elements (DOEs) moving in orthogonal directions is developed. The …

The present article reports a new technique for elimination of speckle noise. The method is
based on the fact that if the state of polarisation of the illuminating beam is changed the …

Speckles in images formed by a laser beam are interference noise arising due to coherent
nature of laser radiation. As the number of projection systems using laser light sources …

A theory is presented which relates the minimum detectable contrast level for an object in
the presence of noise to the statistics of the speckle. Consideration is given to smoothing of …

The translational and boiling motions of dynamic speckles produced in the Fresnel
diffraction field under illumination of a Gaussian beam are investigated in detail. The speckle …