We propose using a two-level (− 1 and+ 1 as variables) orthogonal array (OA) to generate a
binary phase diffuser for speckle reduction in laser projection displays. Compared with 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 …

Speckle, severely affecting the image quality in laser projection, would arise when coherent
lights are scattered from a rough surface. Vibrating or rotating a diffuser or a diffractive …

Speckle can seriously degrade image quality in laser-illuminated projection displays.
Various solutions appropriate to small microdisplay-based projectors are presented …

We proposed a design for a laser mini-projector with a low speckle contrast value and high
contrast ratio that maintains system efficiency. The key design is that two diffusers are …

Profile modification of a gaussian laser beam by acoustic wave modulation is described. If
the spot size of the gaussian laser beam at the input face of the acoustic cell is made smaller …

It is experimentally demonstrated that lens aberrations can have detrimental effects in
speckle photography. These effects include not only loss of speckle correlations and …

The occurrence and smoothing of speckle are studied as a function of the line width for a
highly collimated illuminating source. A general theory is presented for speckling in the …