Polarization optics of the Brewster's dark patch visible on water surfaces versus solar height and sky conditions: theory, computer modeling, photography, and painting

Takacs Peter; Barta Andras; Pye David; Horvath Gabor

首页> 外文期刊>Applied optics >Polarization optics of the Brewster's dark patch visible on water surfaces versus solar height and sky conditions: theory, computer modeling, photography, and painting

【24h】

Polarization optics of the Brewster's dark patch visible on water surfaces versus solar height and sky conditions: theory, computer modeling, photography, and painting

机译：Brewster的黑暗贴片的极化光学器件在水面上可见，而太阳能高度和天空条件：理论，计算机建模，摄影和绘画

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

When the sun is near the horizon, a circular band with approximately vertically polarized skylight is formed at 90 degrees from the sun, and this skylight is only weakly reflected from the region of the water surface around the Brewster's angle (53 degrees from the nadir). Thus, at low solar heights under a clear sky, an extended dark patch is visible on the water surface when one looks toward the north or south quarter perpendicular to the solar vertical. In this work, we study the radiance distribution of this so-called Brewster's dark patch (BDP) in still water as functions of the solar height and sky conditions. We calculate the pattern of reflectivity R of a water surface for a clear sky and obtain from this idealized situation the shape of the BDP. From three full-sky polarimetric pictures taken about a clear, a partly cloudy, and an overcast sky, we determine the R pattern and compose from that synthetic color pictures showing how the radiance distribution of skylight reflected at the water surface and the BDPs would look under these sky conditions. We also present photographs taken without a linearly polarizing filter about the BDP. Finally, we show a 19th century painting on which a river is seen with a dark region of the water surface, which can be interpreted as an artistic illustration of the BDP. (C) 2017 Optical Society of America

机译：当太阳靠近地平线时，距太阳近似垂直极化天窗的圆带形成90度，并且该天窗仅从布鲁斯特角（来自Nadir 53度）的水面区域弱反射。因此，在晴空下的低太阳能高度下，当垂直于太阳垂直于太阳垂直的北方或南方四分之一时，水面上可见延长的暗贴片。在这项工作中，我们将此所谓的Brewster's Dark Patch（BDP）的辐射分布作为太阳能高度和天空条件的功能。我们计算水面的反射率R模式，为清澈的天空获得，从这种理想情况下获得BDP的形状。从三个全天的偏振图像拍摄了一个明确的，部分阴天和阴天的天空，我们确定R模式并从该合成彩色图片撰写，展示了天窗在水面上反射的辐射分布和BDPS会看起来在这些天空条件下。我们还提出了没有关于BDP线性偏振滤波器的照片。最后，我们展示了一个19世纪的绘画，其中河流被水面的暗区域看到，这可以被解释为BDP的艺术例证。（c）2017年光学学会

著录项

来源
《Applied optics》 |2017年第30期|共9页
作者
Takacs Peter; Barta Andras; Pye David; Horvath Gabor;
展开▼
作者单位

Eotvos Lorand Univ Dept Biol Phys Environm Opt Lab Pazmazy Setany 1 H-1117 Budapest Hungary;

Eotvos Lorand Univ Dept Biol Phys Environm Opt Lab Pazmazy Setany 1 H-1117 Budapest Hungary;

24 St Marys Ave London N3 1SN England;

Eotvos Lorand Univ Dept Biol Phys Environm Opt Lab Pazmazy Setany 1 H-1117 Budapest Hungary;

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类应用;
关键词

Polarization optics of the Brewster's dark patch visible on water surfaces versus solar height and sky conditions: theory, computer modeling, photography, and painting

摘要

著录项

相关主题

期刊订阅