Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 1, 2006
|
|
---|---|---|
Article Number | 06010 | |
Number of page(s) | 4 | |
DOI | https://doi.org/10.2971/jeos.2006.06010 | |
Published online | 28 August 2006 |
Regular papers
Invertebrate superposition eyes-structures that behave like metamaterial with negative refractive index
Department of Neurobiophysics, University of Groningen, NL 9747 AG Groningen, the Netherlands
Received:
28
July
2006
The superposition eyes of moths and lobsters are described with the geometrical optics for a refractive surface between two media, where the refractive index of the image space is negative. Consequently, the eye power and the object focal length are negative, whereas the image focal length is positive. The F-number is also negative, but the sign is irrelevant for calculations of the light sensitivity, because that depends on F2.
Key words: Angular magnification / lobster eye / F-number
© The Author(s) 2006. All rights reserved.
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