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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 742744.0, MPI für Astronomie / Publikationen_mpia
Design and evaluation of a freeform lens by using a method of luminous intensity mapping and a differential equation
Authors:Essameldin, M.; Fleischmann, F.; Henning, T.; Lang, W.
Place of Publication:Bellingham, Wash.
Date of Publication (YYYY-MM-DD):2017
Audience:Not Specified
Abstract / Description:Freeform optical systems are playing an important role in the field of illumination engineering for redistributing the light intensity, because of its capability of achieving accurate and efficient results. The authors have presented the basic idea of the freeform lens design method at the 117th annual meeting of the German Society of Applied Optics (DGAOProceedings). Now, we demonstrate the feasibility of the design method by designing and evaluating a freeform lens. The concepts of luminous intensity mapping, energy conservation and differential equation are combined in designing a lens for non-imaging applications. The required procedures to design a lens including the simulations are explained in detail. The optical performance is investigated by using a numerical simulation of optical ray tracing. For evaluation, the results are compared with another recently published design method, showing the accurate performance of the proposed method using a reduced number of mapping angles. As a part of the tolerance analyses of the fabrication processes, the influence of the light source misalignments (translation and orientation) on the beam-shaping performance is presented. Finally, the importance of considering the extended light source while designing a freeform lens using the proposed method is discussed.
External Publication Status:published
Document Type:Other
Communicated by:N. N.
Affiliations:MPI für Astronomie
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