Abstract

A spherical artificial compound eye which is comprised of an imaging microlens array and a pinhole array in the focal plane serving as receptor matrix is fabricated. The arrays are patterned on separate spherical bulk lenses by means of a special modified laser lithography system which is capable of generating structures with low shape deviation on curved surfaces. Design considerations of the imaging system are presented as well as the characterization of the comprising elements on curved surfaces, with special attention to the homogeneity over the array. The assembled system is the first spherical compound eye able to capture images. It is evaluated by analyzing resolution and cross-talk between the single channels.

© 2007 Optical Society of America

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    [CrossRef]

2007 (1)

2006 (2)

2005 (4)

2004 (1)

2003 (1)

R. Volkel, M. Eisner and K. J. Weible, "Miniaturized imaging systems," Microelectron. Eng. 67-68, 461-472 (2003).
[CrossRef]

2001 (1)

2000 (1)

G. Yu, G. Srdanov, J. Wang, H. Wang, Y. Cao and A. Heeger, "Large area, full-color, digital image sensors made with semiconducting polymers," Synth. Metals 111-112, 133-137 (2000).
[CrossRef]

1997 (1)

P. Nussbaum, R. Volkel, H. P. Herzig, M. Eisner and S. Haselbeck, "Design, fabrication and testing of microlens arrays for sensors and microsystems," Pure Appl. Opt. 6, 617-636 (1997).
[CrossRef]

1996 (1)

K. Hamanaka and H. Koshi, "An artificial compound eye using a microlens array and its application to scaleinvariant processing," Opt. Rev. 3, 264-268 (1996).
[CrossRef]

1995 (1)

J. S. Sanders and C. E. Halford, "Design and analysis of apposition compound eye optical sensors," Opt. Eng. 34, 222-235 (1995).
[CrossRef]

1994 (2)

S. Ogata, J. Ishida and T. Sasano, "Optical sensor array in an artificial compound eye," Opt. Eng. 33, 3649-3655 (1994).
[CrossRef]

M. T. Gale, M. Rossi, J. Pedersen and H. Schutz, "Fabrication of continuous-relief micro-optical elements by direct laser writing in photoresist," Opt. Eng. 33, 3556-3566 (1994).
[CrossRef]

1992 (1)

N. Franceschini, J. M. Pichon and C. Blanes, "From insect vision to robot vision," Phil. Trans. R. Soc. Lond. B 337, 283-294 (1992).
[CrossRef]

1988 (1)

1977 (1)

A. W. Snyder, D. G. Stavenga and S. B. Laughlin, "Spatial Information Capacity of Compound Eyes," J. Comp. Physiol. A 116, 183-207 (1977).
[CrossRef]

1974 (1)

K. Kirschfeld, "The Absolute Sensitivity of Lens and Compound Eyes," Z. Naturforsch. 29, 592-596 (1974).

Blanes, C.

N. Franceschini, J. M. Pichon and C. Blanes, "From insect vision to robot vision," Phil. Trans. R. Soc. Lond. B 337, 283-294 (1992).
[CrossRef]

Cao, Y.

G. Yu, G. Srdanov, J. Wang, H. Wang, Y. Cao and A. Heeger, "Large area, full-color, digital image sensors made with semiconducting polymers," Synth. Metals 111-112, 133-137 (2000).
[CrossRef]

Conell, G. A. N.

Feng, X.

Franceschini, N.

N. Franceschini, J. M. Pichon and C. Blanes, "From insect vision to robot vision," Phil. Trans. R. Soc. Lond. B 337, 283-294 (1992).
[CrossRef]

Fu, S.

Gale, M. T.

M. T. Gale, M. Rossi, J. Pedersen and H. Schutz, "Fabrication of continuous-relief micro-optical elements by direct laser writing in photoresist," Opt. Eng. 33, 3556-3566 (1994).
[CrossRef]

Halford, C. E.

J. S. Sanders and C. E. Halford, "Design and analysis of apposition compound eye optical sensors," Opt. Eng. 34, 222-235 (1995).
[CrossRef]

Hamanaka, K.

K. Hamanaka and H. Koshi, "An artificial compound eye using a microlens array and its application to scaleinvariant processing," Opt. Rev. 3, 264-268 (1996).
[CrossRef]

He, S.

Heeger, A.

G. Yu, G. Srdanov, J. Wang, H. Wang, Y. Cao and A. Heeger, "Large area, full-color, digital image sensors made with semiconducting polymers," Synth. Metals 111-112, 133-137 (2000).
[CrossRef]

Ichioka, Y.

Ishida, J.

S. Ogata, J. Ishida and T. Sasano, "Optical sensor array in an artificial compound eye," Opt. Eng. 33, 3649-3655 (1994).
[CrossRef]

Ishida, K.

Jeong, K.-H.

K.-H. Jeong, J. Kim and L. P. Lee, "Biologically inspired artificial compound eyes," Science 312, 557-561 (2006).
[CrossRef] [PubMed]

Kim, J.

K.-H. Jeong, J. Kim and L. P. Lee, "Biologically inspired artificial compound eyes," Science 312, 557-561 (2006).
[CrossRef] [PubMed]

Kirschfeld, K.

K. Kirschfeld, "The Absolute Sensitivity of Lens and Compound Eyes," Z. Naturforsch. 29, 592-596 (1974).

Kondou, N.

Koshi, H.

K. Hamanaka and H. Koshi, "An artificial compound eye using a microlens array and its application to scaleinvariant processing," Opt. Rev. 3, 264-268 (1996).
[CrossRef]

Kumagai, T.

Laughlin, S. B.

A. W. Snyder, D. G. Stavenga and S. B. Laughlin, "Spatial Information Capacity of Compound Eyes," J. Comp. Physiol. A 116, 183-207 (1977).
[CrossRef]

Lee, L. P.

K.-H. Jeong, J. Kim and L. P. Lee, "Biologically inspired artificial compound eyes," Science 312, 557-561 (2006).
[CrossRef] [PubMed]

Lu, Z.

Miyatake, S.

Miyazaki, D.

Morimoto, T.

Nussbaum, P.

P. Nussbaum, R. Volkel, H. P. Herzig, M. Eisner and S. Haselbeck, "Design, fabrication and testing of microlens arrays for sensors and microsystems," Pure Appl. Opt. 6, 617-636 (1997).
[CrossRef]

Ogata, S.

S. Ogata, J. Ishida and T. Sasano, "Optical sensor array in an artificial compound eye," Opt. Eng. 33, 3649-3655 (1994).
[CrossRef]

Pedersen, J.

M. T. Gale, M. Rossi, J. Pedersen and H. Schutz, "Fabrication of continuous-relief micro-optical elements by direct laser writing in photoresist," Opt. Eng. 33, 3556-3566 (1994).
[CrossRef]

Pichon, J. M.

N. Franceschini, J. M. Pichon and C. Blanes, "From insect vision to robot vision," Phil. Trans. R. Soc. Lond. B 337, 283-294 (1992).
[CrossRef]

Popovich, Z. D.

Radtke, D.

Rossi, M.

M. T. Gale, M. Rossi, J. Pedersen and H. Schutz, "Fabrication of continuous-relief micro-optical elements by direct laser writing in photoresist," Opt. Eng. 33, 3556-3566 (1994).
[CrossRef]

Sanders, J. S.

J. S. Sanders and C. E. Halford, "Design and analysis of apposition compound eye optical sensors," Opt. Eng. 34, 222-235 (1995).
[CrossRef]

Sasano, T.

S. Ogata, J. Ishida and T. Sasano, "Optical sensor array in an artificial compound eye," Opt. Eng. 33, 3649-3655 (1994).
[CrossRef]

Snyder, A. W.

A. W. Snyder, D. G. Stavenga and S. B. Laughlin, "Spatial Information Capacity of Compound Eyes," J. Comp. Physiol. A 116, 183-207 (1977).
[CrossRef]

Sprague, R. A.

Srdanov, G.

G. Yu, G. Srdanov, J. Wang, H. Wang, Y. Cao and A. Heeger, "Large area, full-color, digital image sensors made with semiconducting polymers," Synth. Metals 111-112, 133-137 (2000).
[CrossRef]

Stavenga, D. G.

A. W. Snyder, D. G. Stavenga and S. B. Laughlin, "Spatial Information Capacity of Compound Eyes," J. Comp. Physiol. A 116, 183-207 (1977).
[CrossRef]

Sun, L.

Tanida, J.

Wang, H.

G. Yu, G. Srdanov, J. Wang, H. Wang, Y. Cao and A. Heeger, "Large area, full-color, digital image sensors made with semiconducting polymers," Synth. Metals 111-112, 133-137 (2000).
[CrossRef]

Wang, J.

G. Yu, G. Srdanov, J. Wang, H. Wang, Y. Cao and A. Heeger, "Large area, full-color, digital image sensors made with semiconducting polymers," Synth. Metals 111-112, 133-137 (2000).
[CrossRef]

Xie, Y.

Yamada, K.

Yu, G.

G. Yu, G. Srdanov, J. Wang, H. Wang, Y. Cao and A. Heeger, "Large area, full-color, digital image sensors made with semiconducting polymers," Synth. Metals 111-112, 133-137 (2000).
[CrossRef]

Zeitner, U. D.

Zhao, F.

Appl. Opt. (4)

J. Comp. Physiol. A (1)

A. W. Snyder, D. G. Stavenga and S. B. Laughlin, "Spatial Information Capacity of Compound Eyes," J. Comp. Physiol. A 116, 183-207 (1977).
[CrossRef]

Microelectron. Eng. (1)

R. Volkel, M. Eisner and K. J. Weible, "Miniaturized imaging systems," Microelectron. Eng. 67-68, 461-472 (2003).
[CrossRef]

Opt. Eng. (3)

J. S. Sanders and C. E. Halford, "Design and analysis of apposition compound eye optical sensors," Opt. Eng. 34, 222-235 (1995).
[CrossRef]

S. Ogata, J. Ishida and T. Sasano, "Optical sensor array in an artificial compound eye," Opt. Eng. 33, 3649-3655 (1994).
[CrossRef]

M. T. Gale, M. Rossi, J. Pedersen and H. Schutz, "Fabrication of continuous-relief micro-optical elements by direct laser writing in photoresist," Opt. Eng. 33, 3556-3566 (1994).
[CrossRef]

Opt. Express (5)

Opt. Rev. (1)

K. Hamanaka and H. Koshi, "An artificial compound eye using a microlens array and its application to scaleinvariant processing," Opt. Rev. 3, 264-268 (1996).
[CrossRef]

Phil. Trans. R. Soc. Lond. B (1)

N. Franceschini, J. M. Pichon and C. Blanes, "From insect vision to robot vision," Phil. Trans. R. Soc. Lond. B 337, 283-294 (1992).
[CrossRef]

Pure Appl. Opt. (1)

P. Nussbaum, R. Volkel, H. P. Herzig, M. Eisner and S. Haselbeck, "Design, fabrication and testing of microlens arrays for sensors and microsystems," Pure Appl. Opt. 6, 617-636 (1997).
[CrossRef]

Science (1)

K.-H. Jeong, J. Kim and L. P. Lee, "Biologically inspired artificial compound eyes," Science 312, 557-561 (2006).
[CrossRef] [PubMed]

Synth. Metals (1)

G. Yu, G. Srdanov, J. Wang, H. Wang, Y. Cao and A. Heeger, "Large area, full-color, digital image sensors made with semiconducting polymers," Synth. Metals 111-112, 133-137 (2000).
[CrossRef]

Z. Naturforsch. (1)

K. Kirschfeld, "The Absolute Sensitivity of Lens and Compound Eyes," Z. Naturforsch. 29, 592-596 (1974).

Other (3)

P. Dannberg, G. Mann, L. Wagner and A. Brauer, "Polymer UV-molding for micro-optical systems and O/Eintegration," in Micromachining for Micro-Optics, S. H. Lee and E. G. Johnson, eds., Proc. SPIE 4179 pp. 137- 145, (2000).
[CrossRef]

M. F. Land and D.-E. Nilsson, Animal Eyes, Oxford Animal Biology Series (Oxford University Press, Oxford, 2002).

K. Kirschfeld, "The resolution of lens and compound eyes," Neural Principles in Vision, pp. 354-370 (1976).

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Figures (11)

Fig. 1.
Fig. 1.

a) Principle of the natural spherical compound eye and b) adapted solution for the artificial alternative.

Fig. 2.
Fig. 2.

a) Schematic view of the functional components of the modified laser lithography system capable of structuring curved surfaces. b) Fabrication flow of the microlens array (left, I-VII) and the pinhole array (right, Ib-VIb). The lower right corner of the flow (VII+VIb) shows a part of the final elements in their designed arrangement.

Fig. 3.
Fig. 3.

Photograph of fabricated array of 112×112 microlenses on concave lens surface (a), zoomed photo of a corner of the array (b), and microscopic image of the middle section (c) and a corner (d) of the array.

Fig. 4.
Fig. 4.

Profile scan data showing a small section of the array.

Fig. 5.
Fig. 5.

Resist thickness of a film spun onto a substrate with curvature of R = -40 mm.

Fig. 6.
Fig. 6.

Measured radius of curvature of the resist microlenses and replicated polymer microlenses over the array, showing desired uniformity over the array and good matching of the polymer with the resist lenses.

Fig. 7.
Fig. 7.

Single lens of the array, interferometrically measured (a) and profile measurement and spherical fit (b).

Fig. 8.
Fig. 8.

Shape deviation (PV and RMS) for the microlenses over the array.

Fig. 9.
Fig. 9.

Photograph of the experimental setup for active concentric alignment and optical characterization of spherical compound eye objective.

Fig. 10.
Fig. 10.

Images captured with the artificial spherical compound eye. a) Radial star pattern with 18 LPs on the circumference. Ghost images are clearly visible due to cross-talk between the channels. b),c),d) and e) Bar targets with 4, 8, 12 and 20 LPs/FOV respectively. f) ”Image Processing Lena”.

Fig. 11.
Fig. 11.

Response to a point source (Strongly magnified). a) Only one channel gives a strong response to a point source. b) Angular sensitivity function calculated from (a)).

Tables (1)

Tables Icon

Table 1. Summary of the most important parameters of the fabricated elements and the assembled spherical apposition eye.

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