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Updated: Jul 2, 2025

Demonstration of a Hyperlens-integrated Microscope and Super-resolution Imaging
Published on: September 8, 2017
Field curvature reduction in miniaturized high numerical aperture and large field-of-view objective lenses with sub 1
Sophia Laura Stark1, Herbert Gross2, Katharina Reglinski3,4,5
1Grintech GmbH, Otto-Eppenstein-Str. 7, 07745 Jena, Germany.
Abstract:
In this paper the development of a miniaturized endoscopic objective lens for various biophotonics applications is presented. While limiting the mechanical dimensions to 2.2 mm diameter and 13 mm total length, a numerical aperture of 0.7 in water and a field-of-view (FOV) diameter of 282 µm are achieved. To enable multimodal usage a wavelength range of 488 nm to 632 nm was considered. The performed broad design study aimed for field curvature reduction when maintaining the sub 1 µm resolution over a large FOV. Moreover, the usage of GRadient-INdex (GRIN) lenses was investigated. The resolution, field curvature improvement and chromatic performance of the novel device were validated by means of a confocal laser-scanning-microscope.
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