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 …

Electroactive dielectric elastomers exhibit enormous promise for a variety of miniature
transducers due to their unique mechanical and electromechanical characteristics (ie, high …

We present a simple and robust approach to reduce laser speckle, which has limited the
adoption of lasers in imaging and display applications. We use colloidal solutions that can …

Currently the major issues in applying the laser as an illumination source for projectors are
beam shaping and laser speckle. We present a compact total solution for both issues by …

We have recently reported on a simple, low cost, and highly stable way to convert a standard
microscope into a holographic one [Opt. Express 22, 14929 (2014)]. The method, named …

Microlens array (MLA) has attracted increasing interest as its application in micro-optical
device and system. In this letter, we proposed a new approach that applies rotational …

For a rough diffuser that fully depolarizes a linearly polarized laser, the speckle contrast of a
fully developed speckle image can be reduced from 1 to 0.5 by polarization diversity. This …

Laser speckle is greatly influenced by the chosen light source and how or if its emission is
manipulated. A laser with intrinsically high coherence generates high speckle contrast (SC …

Speckle suppression in a two-diffuser system is examined. An analytical expression for the
speckle space–time correlation function is derived, so that the speckle suppression …

Our study proposes a novel method for obtaining speckle-free homogeneous illumination
using a combination of a multi-retarder plate, a microlens array, a Fourier lens, and a …