Abstract
Fill-factor of microlens arrays (MLAs) is one of the most important performance criteria of microlens arrays (MLA), especially in imaging applications. Low fill-factor lenses suffer greatly from spurious light and diffraction affects and result in low contrast in a beam steering system. Contrast ratio of low fill-factor circular shaped microlens arrays is nearly one-fourth of that of the system with high fill-factor square shaped microlens arrays. In this study performance of various types of nearly 100% fill-factor spherical MLAs in beam steering applications are compared. Design and fabrication of the MLAs are studied. A new hybrid method for design and fabrication of 100% fill-factor MLAs -by combining refractive-diffractive lenses, is suggested and tested.
Original language | English |
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Title of host publication | Micro-Optics, VCSELs, and Photonic Interconnects II: Fabrication, Packaging, and Integration |
Volume | 6185 |
DOIs | |
Publication status | Published - 2006 |
Event | Optical Sensing II - Strasbourg, France Duration: 3 Apr 2006 → 6 Apr 2006 |
Conference
Conference | Optical Sensing II |
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Country/Territory | France |
City | Strasbourg |
Period | 3/04/06 → 6/04/06 |
Keywords
- Beam steering
- Diffraction analysis
- Imaging
- Microlens array fabrication
- Microlens arrays