Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yoshiyuki Shirai0
Yasuhisa Watanabe0
Date of Patent
May 27, 2008
0Patent Application Number
116039030
Date Filed
November 24, 2006
0Patent Primary Examiner
Patent abstract
The present invention is dedicated to a cost reduced anti-reflection film of a multi-lamination structure that is reduced in number of layers and increased in thickness of the same for the purpose of facilitating the total control of the film thickness and that can be manufactured in a simplified process so as to reduce the manufacturing cost. Three component layers are deposited one over another on a substrate ranging from 1.90≦ns≦2.10 in refractive index at an arbitrary design basis wavelength within a wavelength range in and near visible band, and these layers exhibit optical properties as in the following table:
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