The methods of wave optics and ray-field tracing are implemented for modeling microlens arrays (MLAs), taking into account the effects of coherence and polarization of the light source, randomization of the parameters of microlens arrays. The influence of the parameters of the radiation source (wavelength, curvature of the wavefront, beam radius, coherence radius, etc.) and the microlens array (periodic or random, aspect ratio, pitch size, refractive index, shape and profile of the array surface (convex, concave, aspheric), etc.) on the output parameters (intensity distribution, radiation pattern, optical efficiency) of the diffracted beam is studied. The numerical simulation of the intensity distribution and the spreading angle of diffracted beam is carried out. To calculate the optical efficiency of microlens arrays, a new approach to the ray field based on the coherent state representation has been developed. Such wave rays can simply be tracked along arbitrary curved surfaces. A user-friendly interface has been developed for entering the initial parameters of the light source and the MLA array, as well as for displaying graphical and informational modeling results. The measured intensity distributions of diffracted radiation by microlens array are compared with the simulation results for LD and LED sources.
Wave-optics and ray-field tracing methods for the simulation of micro-lens arrays (MLAs) taking into account the coherence and polarization effects of light source, randomization of microlens array parameters are implemented. The influence of the parameters of radiation source (wavelength, wavefront curvature, beam radius, coherence radius, etc.) and micro-lens array (periodic or random, aspect ratio, pitch size, refractive index, array surface shape and profile (convex, concave), etc.) on the output parameters (intensity distribution, radiation pattern, optical efficiency) of a diffracted beam is investigated. Numerical simulations of the intensity distributions and spreading angle of a diffracted beam have been carried out. The new ray-field approach based on the coherent states representation is developed for calculation of the optical efficiency of the microlens arrays. Such wave beams can be tracked simply through the arbitrary curved surfaces. User Friendly Interface is developed for introducing initial parameters of light source and MLA array and for graphical and data outputs of simulated results.
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