Abstract

We demonstrate a novel method for fabricating glass microlens (arrays) with single step on conventional lens surface. In this method, the glass microlens can be achieved by only one step with sol gel glass material. The microlens aperture and focus length can be controlled easily and uniformly. The fabricated sample shows good focusing property. This work will be useful to improve the performance of compound eyes optical system such as camera, telescope, 3D integral imaging and so on.

© 2005 Optical Society of America

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References

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Appl. Opt.

Appl. Phys. Lett.

Madanagopal V. Kunnavakkam, �??Low-cost, low-loss microlens arrays fabricated by soft-lithography replication process,�?? Appl. Phys. Lett. 82, 1152 (2003).
[CrossRef]

IEEE Photonics Technol. Lett.

D. L. MacFarlane, V. Narayan, J. A. Tatum, �??Microjet Fabrication of Microlens Arrays,�?? IEEE Photonics Technol. Lett. 6, 1112 (1994).
[CrossRef]

J. Mater. Chem.

Lidia Armelao, Christoph Eisenmenger-Sittner, Matthijs Groenewolt, Silvia Gross, �??Zirconium and hafnium oxoclusters as molecular building blocks for highly dispersed ZrO2 or HfO2 nanoparticles in silica thin films,�?? J. Mater. Chem. 15, 1838�??1848 (2005).
[CrossRef]

J. Opt. A: Pure and Appl.Opt.

M.He, X-C. Yuan, N . Q.Ngo, J.Bu, SH.Tao, �??Single-step fabrication of microlens arrays in sol-gel material by laser writing and its application in optical coupling,�?? J. Opt. A: Pure and Appl.Opt. 6(1), 94 (2004).
[CrossRef]

Opt. Express

Opt. Lett.

Other

The diffraction theory of aberrations, IBID, Chapter IV.

Dan Daly, Microlens Arrays, (Taylor and Francs Inc, New York, 2001).

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Figures (7)

Fig. 1.
Fig. 1.

Fabrication a sol microlens on lens surface.

Fig. 2.
Fig. 2.

Contact angle equilibrium

Fig. 3.
Fig. 3.

The method to achieve precise sol volume.

Fig. 4.
Fig. 4.

To form the glass microlens and rotate to fabricate microlens arrays on lens surface

Fig. 5.
Fig. 5.

Top view and section profile of the microlens.

Fig. 6.
Fig. 6.

The optical system to test microlens arrays.

Fig. 7.
Fig. 7.

Focal spot distribution and the interference pattern.

Equations (2)

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E LV cos ( θ ) = E SV E SL
V = [ π ( D 2 2 ) 2 π ( D 1 2 ) 2 ] × L

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