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Design and optimization of microlens array based high resolution beam steering system.

Ata Akatay1, Hakan Urey

  • 1Department of Electrical Engineering, Koc University, Sariyer, Istanbul 34450, Turkey.

Optics Express
|June 18, 2009
PubMed
Summary
This summary is machine-generated.

This study demonstrates high-resolution imaging and beam steering using three microlens arrays (MLAs). The compact system achieves agile beam steering and high resolution, suitable for endoscopic applications.

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Area of Science:

  • Optics and Photonics
  • Micro-optics
  • Imaging Systems

Background:

  • Microlens arrays (MLAs) are crucial for optical systems, but challenges exist in achieving high-resolution imaging and precise beam steering.
  • Existing microlens scanning systems face discrete addressing problems, limiting their scanning range and flexibility.

Purpose of the Study:

  • To demonstrate high-resolution imaging and agile beam steering using a novel system with three microlens arrays (MLAs).
  • To overcome limitations of discrete addressing in microlens scanning systems.
  • To present a hybrid design and optimization method for MLA systems.

Main Methods:

  • A system incorporating three microlens arrays (MLAs) was designed and implemented.
  • A prescan lens was integrated to address discrete addressing issues.
  • A hybrid optimization approach combining geometrical ray tracing and physical optics simulation was employed.

Main Results:

  • Demonstrated feasibility of 1880 x 1880 resolution with f/2 aspherical MLAs and 752 x 752 resolution with f/5 spherical MLAs.
  • Showcased that small lateral displacement of a single MLA enables large-angle beam steering.
  • The developed system is compact, offering suitability for endoscopic imaging and agile steering of large beams.

Conclusions:

  • The proposed MLA system effectively achieves high-resolution imaging and large-angle beam steering.
  • The hybrid design method provides an efficient approach for optimizing MLA systems.
  • The compact and agile system holds significant potential for advanced imaging and beam manipulation applications, particularly in endoscopy.