Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Spiral optical designs for nonimaging applications
Year:2011
Research Areas
  • Engineering
Information
Abstract
Manufacturing technologies as injection molding or embossing specify their production limits for minimum radii of the vertices or draft angle for demolding, for instance. In some demanding nonimaging applications, these restrictions may limit the system optical efficiency or affect the generation of undesired artifacts on the illumination pattern. A novel manufacturing concept is presented here, in which the optical surfaces are not obtained from the usual revolution symmetry with respect to a central axis (z axis), but they are calculated as free-form surfaces describing a spiral trajectory around z axis. The main advantage of this new concept lies in the manufacturing process: a molded piece can be easily separated from its mold just by applying a combination of rotational movement around axis z and linear movement along axis z, even for negative draft angles. Some of these spiral symmetry examples will be shown here, as well as their simulated results.
International
Si
Congress
Illumination Optics II
960
Place
Marsella, Francia
Reviewers
Si
ISBN/ISSN
0277-786X
Start Date
07/09/2011
End Date
08/09/2011
From page
1
To page
12
PROCEEDINGS OF SPIE Volume 8170 Proceedings of SPIE, 0277-786X, v. 8170 Illumination Optics II
Participants
  • Autor: Pablo Zamora Herranz (UPM)
  • Autor: Pablo Benitez Gimenez (UPM)
  • Autor: Juan Carlos Miñano Dominguez (UPM)
  • Autor: Marina Buljan . (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ingeniería Óptica
  • Centro o Instituto I+D+i: Centro de Domótica Integral, CEDINT
  • Departamento: Electrónica Física
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Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
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