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2 October 2024 Compact reflective system for ideal imaging concentration
Nir Davidson, Nandor Bokor, Shlomi Steinberg
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Proceedings Volume PC13132, Nonimaging Optics: Efficient Design for Illumination and Concentration XIX; PC1313209 (2024) https://doi.org/10.1117/12.3028808
Event: Optical Engineering + Applications, 2024, San Diego, California, United States
Abstract
We propose a new design principle for optimal concentration of light with small diffusivity based on the conservation of local brightness in passive optical transformations. A coordinate transformation is applied on the incoming rays to compensate for the variations in local brightness by the focusing stage. We apply this analytic design for a compact reflective configuration for ideal imaging concentration of diffuse light such as sunlight in one dimension on an elongated target with arbitrary cross-sectional shape at the thermodynamic limit. As illustrations, we present the design for two different target geometries and verify its validity using numerical ray-tracing simulations. The same configuration can be used in reverse as an ideal collimator of a finite diffuse source.
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Nir Davidson, Nandor Bokor, and Shlomi Steinberg "Compact reflective system for ideal imaging concentration", Proc. SPIE PC13132, Nonimaging Optics: Efficient Design for Illumination and Concentration XIX, PC1313209 (2 October 2024); https://doi.org/10.1117/12.3028808
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KEYWORDS
Imaging systems
Reflection
Design
Analytics
Collimators
Shape analysis
Simulations
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