Optical device, optical module, optical head, and

专利名称：Optical device, optical module, optical head,

and optical recording/reproducingapparatus using the same

发明人：Tsutomu Ishi,Junichi Fujikata,Hitoshi

Yokota,Kunio Kato

申请号：US10623657申请日：20030722

公开号：US20040125704A1公开日：20040701

专利附图：

摘要：An optical device is provided including a conductive film having first and second

surfaces, at least one aperture provided in the conductive film and extending from thefirst surface to the second surface, and a surface topography formed on at least one ofthe first and second surfaces, wherein said surface topography increases an intensity oflight incident onto one of said first and second surfaces and transmitted through saidaperture, wherein a region on which the surface topography is formed is larger than aregion where the light is incident on the conductive film surface, and the aperture isformed on the region on which the surface topography is formed.

申请人：NEC CORPORATION

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