Relief-phase diffractive optical elements on formed revolution surfaces having the high diffraction efficiency

G.I. Greysukh, E.G. Ezhov, Z.A. Sidyakina, S.A. Stepanov

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DOI: 10.18287/0134-2452-2013-37-1-51-58.

Full text of article: Russian language.

Pages: 51-58.

Abstract:
New optimization method for design of axisymmetrical TIR optical elements generating the prescribed narrow-angle irradiance distribution is presented. The method is based on the developed quick raytracing procedure including approximation of the optical surfaces by a set of truncated cones. As an example the optical element producing uniformly illuminated circular region with angular size of 60° is presented. It was computed and simulated for extended Lambert light source 1x1 mm. The light efficiency of optical element is 91.5 % and the relative root-mean-square error of generated irradiance distribution is less than 5 %.

Key words:
LED optical element, secondary optics, total internal reflection, raytracing, optimization of optical surface, narrow-angle light distribution.

Citation:
Moiseev MA, Borisova KV, Byzov EV, Doskolovich LL. Optimization method for computation of tir optical elements based on quick raytracing procedure. Computer Optics 2013; 37(1): 51-58. DOI:10.18287/0134-2452-2013-37-1-51-58.

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