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Optical Systems Created with Microlenses

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A research team from the Universität Mannheim in Germany has produced micro-objectives with a large numerical aperture by stacking gradient-index microlenses. The results, which were published in the Dec. 1, 1999, issue of Applied Optics, suggest that the technique may bring the corrective advantages of ion-exchanged microlenses to optical storage and confocal microscopy. The researchers designed the micro-objectives with a ray-trace program they developed. The resolution of the 0.45-NA three-lens stacked objective was tested with a circular 2-µm-linewidth test pattern and a...Read full article

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    Published: March 2000
    MicroscopyResearch & TechnologyTech Pulse

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