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Visual Optics: Remarkable Image-Forming Mirrors in Scallop Eyes

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Presentation on theme: "Visual Optics: Remarkable Image-Forming Mirrors in Scallop Eyes"— Presentation transcript:

1 Visual Optics: Remarkable Image-Forming Mirrors in Scallop Eyes
Eric J. Warrant  Current Biology  Volume 28, Issue 6, Pages R262-R264 (March 2018) DOI: /j.cub Copyright © 2018 Elsevier Ltd Terms and Conditions

2 Figure 1 The concave mirror eyes of scallops.
(A) A living scallop (Pecten maximus) with several eyes visible (yellow arrow). Photo: Ceri Jones, Haven Diving Services, with permission. (B) Eyes along the mantle edges of an unknown species of scallop. Photograph courtesy of the photographer Matthew Krummins (via a Creative Commons Attribution 2.0 Generic License). (C) The mosaic of square guanine crystals tiling the mirror. (D). The thickness of the mirror seen in cross-section, showing its many layers of guanine crystals. Scale bars in (C,D): 1 μm. Images in (C,D) courtesy of Benjamin Palmer. Current Biology  , R262-R264DOI: ( /j.cub ) Copyright © 2018 Elsevier Ltd Terms and Conditions

3 Figure 2 The concave mirror eye of the scallop Pecten.
(A) Light rays are weakly refracted by a gelatinous lens (l ) and are reflected by a nearly spherical concave mirror (m) lining the back of the eye. This mirror creates a focused image in a retina (r) suspended above the mirror. Image courtesy of Dan-Eric Nilsson. Current Biology  , R262-R264DOI: ( /j.cub ) Copyright © 2018 Elsevier Ltd Terms and Conditions


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