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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 12 — Jun. 14, 2004
  • pp: 2574–2588

Application of the Alvarez-Humphrey concept to the design of a miniaturized scanning microscope

Siddharth S. Rege, Tomasz S. Tkaczyk, and Michael R. Descour  »View Author Affiliations


Optics Express, Vol. 12, Issue 12, pp. 2574-2588 (2004)
http://dx.doi.org/10.1364/OPEX.12.002574


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Abstract

This paper contains two optical designs that utilize the Alvarez-Humphrey surfaces to provide the miniature multi-modal microscope (4M device) with the additional capability of imaging different object depths onto the same image plane. The Alvarez-Humphrey surfaces are a pair of conjugate, rotationally asymmetrical, aspheric surfaces such that, the lateral movement of these surfaces across the optical axis, results in an element of variable optical power. The first design is a direct application of the Alvarez-Humphrey concept to the 4M device. However, due to the inadequate imaging performance and unavailability of space for the actuator due to proximity of the Alvarez Plates, a second design was created. The Separated Alvarez Plate Design is a unique design involving two conjugate pairs of Alvarez-Humphrey surfaces. The lateral movement of the central element changes the optical power. However, due to the symmetry of the system and the incorporation of the theoretical work done on induced aberration correction, this system has far superior performance. It also has adequate space for the actuator due to the separation of the elements.

© 2004 Optical Society of America

OCIS Codes
(170.2150) Medical optics and biotechnology : Endoscopic imaging
(220.3620) Optical design and fabrication : Lens system design

ToC Category:
Research Papers

History
Original Manuscript: April 26, 2004
Revised Manuscript: May 24, 2004
Published: June 14, 2004

Citation
Siddharth Rege, Tomasz Tkaczyk, and Michael Descour, "Application of the Alvarez-Humphrey concept to the design of a miniaturized scanning microscope," Opt. Express 12, 2574-2588 (2004)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-12-2574


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References

  1. Luis W. Alvarez & William E. Humphrey, �??Variable Power Lens and System,�?? Patent # 3,507,565 United States Patent Office. (1970)
  2. M.R. Descour et al . �??Toward the Development of Miniaturized Imaging Systems for the Detection of Pre- Cancer,�?? IEEE J. Quantum. Electron. 38, 122-130 (2002) [CrossRef]
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  6. Rogers J, Tkaczyk T, Descour M, Christiensen T, �??Characterization and testing of a MEMS scanning grating for structured illumination in a miniature microscope,�?? presented at the OSA Conference, Tucson, Arizona, USA, October 2003.
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  8. Matthew Chidley, �?? Preliminary imaging results of a high NA miniature injection-molded objective designed for fiber-confocal reflectance microscopy,�?? presented at the OSA Conference Tucson , USA, October 2003.
  9. Junwon Lee, �?? The Development of a Miniature Imaging System: Design, Fabrication and Metrology,�?? Dissertation, University of Arizona, 2003.

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