Diffuse laser illumination for Maxwellian view Doppler holography of the retina

We describe the advantages of diffuse illumination in laser holography for ophthalmology. The presence of a diffusing element introduces an angular diversity of the optical radiation and reduces its spatial coherence, which spreads out the energy distribution of the illumination beam in the focal plane of the eyepiece. The field of view of digitally computed retinal images can easily be increased as the eyepiece can be moved closer to the cornea to obtain a Maxwellian view of the retina without compromising ocular safety. Compliance with American and European safety standards for ophthalmic devices is more easily obtained by preventing the presence of a laser hot spot observed in front of the cornea in the absence of a scattering element. Diffuse laser illumination does not introduce any adverse effects on digitally computed laser Doppler images.Comment: 9 page

Synchronization in one-dimensional Kuramoto model with repulsive forces

W pracy zbadane jest zachowanie jednowymiarowego, zamkniętego układu oscylatorów, których ruch opisany jest przez zmodyfikowany model Kuramoto. Wyznaczono wartości parametrów pozwalające na zaistnienie synchronizacji.The paper investigates behavior of one-dimensional, limited system of oscillators, when it's motion is described by modified Kuramoto model. Studies led to determination values of parameters allowing synchronization to occur