Title:
人工誘電体レンズ
Document Type and Number:
Japanese Patent JP5904490
Kind Code:
B2
Abstract:
To realize arrangement in place easily and to obtain a desired refractive index. A z-axis is defined as an optical axis and axes perpendicular to the z-axis are defined as an x-axis and a y-axis. Multiple metal plate pieces 10 each have multiple groove portions formed in the direction of the x-axis. An outer shape of the metal plate pieces 10 are such that the respective cross sections of the metal plate pieces 10 are parallel to x-z planes at given intervals of a lens along the y-axis from a lower edge to a center and from the center to an upper edge. A metal dielectric lens 1 is formed by laminating the metal plate pieces 10 such that the metal plate pieces 10 are arranged parallel to the x-z planes at the given intervals. As a result, a refractive index responsive to the number of the groove portions, and the width and the depth of the groove portion can be obtained. And, a resultant structure causes visible light to pass therethrough.
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Inventors:
Kenji Suzuki
Application Number:
JP2012030576A
Publication Date:
April 13, 2016
Filing Date:
February 15, 2012
Export Citation:
Assignee:
National University Corporation Ibaraki University
International Classes:
H01Q15/04
Domestic Patent References:
| JP2011254482A | ||||
| JP2010213021A | ||||
| JP4183546B2 | ||||
| JP11355035A |
Foreign References:
| WO1997022158A1 | ||||
| WO1994011920A1 | ||||
| US4156878 | ||||
| FR1025655A | ||||
| US2627027 | ||||
| GB683535A |
Attorney, Agent or Firm:
Yasuo Asami
Takamori Suzuki
Takamori Suzuki