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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 23 — Nov. 18, 2013
  • pp: 27611–27621

Tunable hyperchromatic lens system for confocal hyperspectral sensing

Phuong-Ha Cu-Nguyen, Adrian Grewe, Matthias Hillenbrand, Stefan Sinzinger, Andreas Seifert, and Hans Zappe  »View Author Affiliations


Optics Express, Vol. 21, Issue 23, pp. 27611-27621 (2013)
http://dx.doi.org/10.1364/OE.21.027611


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Abstract

A new approach for confocal hyperspectral sensing based on the combination of a diffractive optical element and a tunable membrane fluidic lens is demonstrated. This highly compact lens system is designed to maximize the longitudinal chromatic aberration and select a narrow spectral band by spatial filtering. Changing the curvature of the fluidic lens allows the selected band to be scanned over the whole given spectrum. A hybrid prototype with an integrated electro-magnetic micro-actuator has been realized to demonstrate the functionality of the system. Experimental results show that the spectrum transmitted by the system can be tuned over the entire visible wavelength range, from 450 to 900 nm with a narrow and almost constant linewidth of less than 15 nm. Typical response time for scanning the spectrum by 310 nm is less than 40 ms and the lens system shows a highly linear relationship with the driving current.

© 2013 OSA

OCIS Codes
(220.4000) Optical design and fabrication : Microstructure fabrication
(220.4830) Optical design and fabrication : Systems design
(230.3990) Optical devices : Micro-optical devices
(110.4234) Imaging systems : Multispectral and hyperspectral imaging

ToC Category:
Imaging Systems

History
Original Manuscript: July 31, 2013
Revised Manuscript: October 19, 2013
Manuscript Accepted: October 20, 2013
Published: November 4, 2013

Virtual Issues
Vol. 9, Iss. 1 Virtual Journal for Biomedical Optics

Citation
Phuong-Ha Cu-Nguyen, Adrian Grewe, Matthias Hillenbrand, Stefan Sinzinger, Andreas Seifert, and Hans Zappe, "Tunable hyperchromatic lens system for confocal hyperspectral sensing," Opt. Express 21, 27611-27621 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-23-27611


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