A possible optical basis for monocular slant perception.

1964 ◽  
Vol 71 (5) ◽  
pp. 380-391 ◽  
Author(s):  
Howard R. Flock
Author(s):  
Myron L. Braunstein ◽  
John W. Payne
Keyword(s):  

2013 ◽  
Vol 144 (2) ◽  
pp. 444-450 ◽  
Author(s):  
Guy A.H. Taylor-Covill ◽  
Frank F. Eves

2010 ◽  
Vol 8 (6) ◽  
pp. 844-844
Author(s):  
K. van der Kooij ◽  
S. te Pas
Keyword(s):  

2013 ◽  
Vol 13 (15) ◽  
pp. T1-T1
Author(s):  
A. Bradley ◽  
R. Xu ◽  
L. Thibos
Keyword(s):  

2019 ◽  
Vol 19 (10) ◽  
pp. 177d
Author(s):  
Pin Yang ◽  
Zhongting Chen ◽  
Jeffrey Allen Saunders
Keyword(s):  

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Doekele G. Stavenga ◽  
Hein L. Leertouwer ◽  
Kentaro Arikawa

AbstractThe dorsal wings of male Sasakia charonda butterflies display a striking blue iridescent coloration, which is accentuated by white, orange-yellow and red spots, as well as by brown margins. The ventral wings also have a variegated, but more subdued, pattern. We investigated the optical basis of the various colors of intact wings as well as isolated wing scales by applying light and electron microscopy, imaging scatterometry and (micro)spectrophotometry. The prominent blue iridescence is due to scales with tightly packed, multilayered ridges that contain melanin pigment. The scales in the brown wing margins also contain melanin. Pigments extracted from the orange-yellow and red spots indicate the presence of 3-OH-kynurenine and ommochrome pigment. The scales in the white spots also have multilayered ridges but lack pigment. The lower lamina of the scales plays a so-far undervalued but often crucial role. Its thin-film properties color the majority of the ventral wing scales, which are unpigmented and have large windows. The lower lamina acting as a thin-film reflector generally contributes to the reflectance of the various scale types.


2010 ◽  
Vol 134 (2) ◽  
pp. 182-197 ◽  
Author(s):  
Frank H. Durgin ◽  
Alen Hajnal ◽  
Zhi Li ◽  
Natasha Tonge ◽  
Anthony Stigliani

1999 ◽  
Vol 39 (6) ◽  
pp. 1143-1170 ◽  
Author(s):  
Benjamin T. Backus ◽  
Martin S. Banks ◽  
Raymond van Ee ◽  
James A. Crowell

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