The introduction of image algebra has made it possible to express much of the image processing literature in a very concise form. The resulting expressions have themselves suggested many new ideas. Restoration in general ...

A compound prism is proposed which permits the use of a wide slit in the visible and the ultraviolet spectra. If the light is inversed the compound prism acts as a monochromator.

The polarization state of light transmitted by cholesteric liquid crystals when the incident vibration direction makes any angle with the director, and when p>> lambda is studied. Theoretical investigations show that figures ...

In this paper, a diagrammatic method is proposed to describe the interference phenomena of convergent polarized light and explain the formation of the black cross and the isochromatic line pattern clearly.

The authors study the practical possibilities of filters constructed with linear polarizers with their polarizing axis in different orientations. A filter of such characteristics placed on the Fourier plane of an optical ...

Presents a process to linearize formally a constrained nonlinear automatic lens design problem, which is formulated by means of the penalty function method. Also is given the solutions derived by the QR factorization method.

A general approach to the noncoherent correlations is presented. This approach may be an extended version of the description for the Laur effect. It is shown that the shadow-casting correlation, the Laur effect and the ...

The stratified cladding of integrated optical waveguides is dispersive, which induces quite original phenomena. We present an example of a dielectric waveguide for which there exists a guided mode which propagates faster ...

We demonstrate a scheme of using two types of recorded photorefractive hologram - a photovoltaic hologram and a standard photorefractive hologram - to implement an all-optical bypass-exchange switch. A programmable ...

A matrix representation of non-symmetrical optical systems is introduced. Each component of an optical system containing sphero-symmetrical lenses and cylindrical lenses rotated by arbitrary angles about the optical axis ...