A running screen method is applied to remove hot spot speckle on projection screen by a
laser display system with one DLP panel. We have commercially displayed a projection …

This paper investigates a method to remove hot spot speckle, which is produced by laser-
long coherence, on a projection screen. The objective of the work has been to first create an …

Recently, a practical method of speckle reduction in laser rear projection displays that uses
an optical system with a small moving diffuser has attracted much attention. In this paper, a …

Two alternative methods for effectively reducing the speckle noise in laser based rear and
front projection displays are studied and demonstrated. Firstly, widening of the laser …

A head up display (HUD) with laser backlight unit has two principle problems; one is laser
speckles and the other is distortion. In this study, we propose that a rotating diffuser set at the …

In this paper, the relationship between the coherence and the speckle contrast in a laser-
based projection display system is studied with the consideration of human visual percept …

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 …

Laser sources have been promised for many years to be better light sources as compared to
traditional lamps or light-emitting diodes (LEDs) for projectors, which enable projectors …

Speckle arises when coherent light scattered from a rough surface is detected by an
intensity detector that has a finite aperture, such as an observer. In a laser projection display …

Despite of much effort and significant progress in recent years, speckle removal is still a
challenge for laser projection technology. In this paper, speckle reduction by dynamic …