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Proceedings Paper

Incoherent beam shaping with freeform mirror
Author(s): Dirk Michaelis; Sergey Kudaev; Ralf Steinkopf; Andreas Gebhardt; Peter Schreiber; Andreas Bräuer
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Paper Abstract

Beam shaping of incoherent light sources (LEDs, halogen lamps) for arbitrary target light distribution is obtained by a single free-shape mirror. Special design algorithm ensures continuous profile without abrupt changes and shadowing regions. The mirror is manufactured by single point diamond turning combined with Fast-Tool-Servo (FTS) for simultaneous figuring of base surface and fine structure (for redistributing the light energy). Lateral and axial resolution of the fine structure is determined by FTS and considered during the design and data transfer. Directly turned surfaces can be used as replication tools for polymer or glass moulding and embossing.

Paper Details

Date Published: 27 August 2008
PDF: 6 pages
Proc. SPIE 7059, Nonimaging Optics and Efficient Illumination Systems V, 705905 (27 August 2008); doi: 10.1117/12.794872
Show Author Affiliations
Dirk Michaelis, Fraunhofer Institute for Applied Optics and Precision Engineering (Germany)
Sergey Kudaev, Fraunhofer Institute for Applied Optics and Precision Engineering (Germany)
Ralf Steinkopf, Fraunhofer Institute for Applied Optics and Precision Engineering (Germany)
Andreas Gebhardt, Fraunhofer Institute for Applied Optics and Precision Engineering (Germany)
Peter Schreiber, Fraunhofer Institute for Applied Optics and Precision Engineering (Germany)
Andreas Bräuer, Fraunhofer Institute for Applied Optics and Precision Engineering (Germany)


Published in SPIE Proceedings Vol. 7059:
Nonimaging Optics and Efficient Illumination Systems V
Roland Winston; R. John Koshel, Editor(s)

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