Citation link:
Publisher DOI: https://doi.org/10.1364/OSAC.418596
https://media.suub.uni-bremen.de/handle/elib/6433
Publisher DOI: https://doi.org/10.1364/OSAC.418596

Design and evaluation of a freeform lens-array for a structured light illumination
Authors: | Fleischmann, Friedrich ![]() Essameldin, Mahmoud ![]() Binkele, Tobias ![]() Henning, Thomas ![]() Lang, Walter ![]() |
Abstract: | In illumination applications, freeform lens design starts by modeling the light source intensity, then determining the lens surface. Therefore, any change in the source intensity distribution directly impacts the created illuminance. Freeform lens-array could reduce the dependency between the illuminance pattern and the source intensity distribution. It divides the light source energy into separate beams; each creates the same illuminance pattern. All separated beams are superimposed at a distant target to generate the final illuminance pattern. This paper explains the design procedures of a freeform lens-array in detail, simulates the optical performance, and experimentally evaluates the working principle. Experiments evaluate using different light sources and using a variable illuminated aperture. Moreover, simulations compare the freeform lens-array to a traditional freeform lens. |
Keywords: | freeform lens-array | Issue Date: | 2021 | Publisher: | Optica Publishing Group | Journal/Edited collection: | OSA Continuum | Issue: | 3 | Start page: | 774 | End page: | 782 | Volume: | 4 | Type: | Artikel/Aufsatz | ISSN: | 2578-7519 | Institution: | Hochschule Bremen | Faculty: | Hochschule Bremen - Fakultät 4: Elektrotechnik und Informatik |
Appears in Collections: | Bibliographie HS Bremen |
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