We propose a flexible and lightweight laser speckle noise suppression module based on the
combination of a multimode fiber (MMF) and a macro fiber composite (MFC). The …

Speckle, due to the interference of coherent light having random phases, can seriously
degrade image quality in a laser based projection system. The speckle is even worse when …

The speckle phenomenon produced by coherent waves interfering with each other is
undesirable in laser imaging systems. For each of the laser speckle reduction methods in …

In this paper, we present experimental results on speckle noise suppression using a
completely passive method. The passivity of the method is achieved owing to the absence of …

We propose and experimentally demonstrate an effective method to reduce far-field speckle
noise in multimode fiber with a short cylindrical piezoelectric transducer (PZT) vibrating in …

Current static speckle suppression methods have an extremely large system size and
unsatisfactory performance. This study proposes a device called beam-splitting cavity (BSC) …

We propose a laser speckle reduction method using a fast focus tunable lens (FTL). Different
laser beams are generated after modulating the FTL. Thus, when the laser beams are used …

We present a technique that utilizes cascaded resonant cylindrical piezoelectric ceramics
and multimode optical fibers wound around them to effectively mitigate laser speckle. By …

In this paper, we design a setting that could constantly monitor the screen vibration
frequency and a speckle measurement system that simulates characteristics of human eye …

We propose and demonstrate a speckle reduction technique in a laser diode projection
system. By modulating the drive current of the laser diode continuously, we manage to …