Freeform optics construction with nonuniformly sampled grids in modified double-pole coordinate system

Donglin Ma, Shaun Pacheco, Chengliang Wang, Rongguang Liang

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

The intensity distributions of some light sources have the rotationally symmetric property. We propose a method to design freeform optics by sampling the source intensity distribution nonuniformly in a modified double-pole coordinate system to satisfy the circular emission pattern of the light source. We can greatly improve the smoothness of the designed freeform surfaces and maximize the collection efficiency. We demonstrate the design method with two freeform illumination lenses: one for the light from the multimode filter and the other for the light emitting diode with a hemisphere emitting solid angle. We also demonstrate that the nonuniform sampling algorithm has significant advantages for designing freeform reflectors with superlarge collection angle.

Original languageEnglish (US)
Article number125102
JournalOptical Engineering
Volume54
Issue number12
DOIs
StatePublished - Dec 1 2015

Keywords

  • freeform optics
  • geometric optics
  • illumination design
  • light emitting diodes
  • nonimaging optics
  • nonspherical lens design

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

Fingerprint Dive into the research topics of 'Freeform optics construction with nonuniformly sampled grids in modified double-pole coordinate system'. Together they form a unique fingerprint.

  • Cite this