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Implementation of field lens arrays in beam-deflecting microlens array telescopes
Jacques Duparré1, Daniela Radtke, Peter Dannberg
1Fraunhofer Institut für Angewandte Optik und Feinmechanik, Albert Einstein Strasse 7, D-07745 Jena, Germany. jacques.duparre@iof.fraunhofer.de
Applied Optics
|September 29, 2004
Summary
This study introduces field lenses to microlens array telescopes, significantly reducing spurious light and improving transfer efficiency during beam deflection. This innovation enhances optical system performance by minimizing light loss with increasing displacement.
Area of Science:
- Optics and Photonics
- Optical Engineering
- Micro-optics
Background:
- Laterally displaceable microlens array telescopes offer fast, variable beam deflection.
- Spurious light generation typically reduces transfer efficiency as displacement increases.
Purpose of the Study:
- To present a novel method using field lenses to mitigate spurious light in microlens array telescopes.
- To reduce the deflection angle dependency of transfer efficiency.
Main Methods:
- Theoretical analysis using paraxial matrix formalism to demonstrate spurious light elimination.
- Fabrication of double-sided lens arrays via UV replication.
- Experimental measurement of transfer efficiency with and without field lenses.
- Comparison with numerical wave-optic simulations.
Main Results:
- Field lens arrays theoretically eliminate spurious light.
- Reduced deflection angle dependency of transfer efficiency observed.
- UV replication enables well-aligned double-sided lens arrays.
Conclusions:
- Field lens arrays are effective in improving transfer efficiency in microlens array telescopes.
- The proposed method offers a viable solution for enhanced optical system performance.
- Accurate fabrication techniques are crucial for achieving optimal results.