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Method for manufacturing optical element

  • US 7,608,474 B2
  • Filed: 02/14/2006
  • Issued: 10/27/2009
  • Est. Priority Date: 02/21/2005
  • Status: Expired due to Fees
First Claim
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1. A method for manufacturing an optical element, comprising:

  • forming plural linear resist films arranged at equal intervals on a transparent electrode layer formed on a glass substrate;

    performing a process of forming a first metal layer made of a first metal by an electrolytic plating process and then forming a second metal layer made of a second metal by an electrolytic plating process or non-electrolytic plating process, thereby forming the first metal and second metal alternately on each other between the resist films; and

    removing the resist films to leave a wire grid in which the first metal and second metal are alternately formed,wherein the first metal is a different metal than the second metal, andwherein the process of forming the first metal layer and then forming the second metal layer is performed at least twice until a configuration having a desired number of the first and second metal layers is obtained.

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