A photoplotter, based on a digital micromirror device as real-time reconfigurable mask, is
designed to direct-write microstructures in different photosensitive materials. Binary and …

By using only phase information, this paper describes a new spectral lossy compression
method which can: reduce required memories; adaptively retrieve original images by using …

The use of segmented phase-only filters improves the performance of optical correlators. In
contrast to conventional filters that compare the scene image to a single reference, a …

A method of optimizing and manufacturing a diffractive blazed grating array (DBA) is
proposed to create a visual security feature when illuminated by a divergent light-emitting …

During the quantization of the hologram values part of the information is lost, which
introduces quantization noise in the reconstruction. To enhance the hologram quality, we …

Because of the constant increasing demands of images exchange, and despite the ever
increasing bandwidth of the networks, compression and multiplexing of images is becoming …

Silicon has been machined on lateral resolutions of micrometers and on depth resolutions of
nanometers using a recently-developed process based on ion irradiation and …

Optical computing has recently become a very active research field. The advantage of optics
is its capability of providing highly parallel operations in a two-dimensional space. Using …

Nowadays, in computer-generated diffractive optical element design or correlation filter
computation, cell-oriented techniques incepted in the 1960's or early 1970's are sometimes …

The growing sizes of the images as well as their complexities have reduced the
competitiveness of the digital compression and multiplexing. These new requirements led …