Zhang Hang, Liu Chao, Ma Yu-fei, Zhou Hai-bo, Su Ze-yu, Chen Gang. Smoothing of ellipsoid flow patches in optical design for freeform reflector[J]. Journal of Applied Optics, 2015, 36(5): 818-823. DOI: 10.5768/JAO201536.0505005
Citation: Zhang Hang, Liu Chao, Ma Yu-fei, Zhou Hai-bo, Su Ze-yu, Chen Gang. Smoothing of ellipsoid flow patches in optical design for freeform reflector[J]. Journal of Applied Optics, 2015, 36(5): 818-823. DOI: 10.5768/JAO201536.0505005

Smoothing of ellipsoid flow patches in optical design for freeform reflector

  • The optical design based on foci mapping ellipse flow-patch method has many advantages, such as clear geometric meaning, design flexibility and explicit method of optimization, but there is a drawback that the surface is not smooth. In order to sew up each ellipse flow-patch on the freeform reflector smoothly, the surface of reflector started from one point on the edge and a smooth ellipse flow-patch was built in the direction, then the discontinuity in the direction could be reduced by the energy adjusting method. The time consumption for the surface reconstruction from 40 000 ellipsoid pieces with this method is only about 2 min. The free-form surface cannot only ensure the energy distributed equally, but also improve the smoothness greatly.
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