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Optical module and a fabrication process thereof

  • US 5,759,453 A
  • Filed: 06/25/1996
  • Issued: 06/02/1998
  • Est. Priority Date: 07/12/1993
  • Status: Expired due to Term
First Claim
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1. A method of manufacturing an optical path conversion device, comprising the steps of:

  • forming a depression having a round shape on an end surface of a glass substrate defined by a pair of major surfaces different from said end surface by a photolithographic patterning process such that said round depression extends generally parallel to said pair of major surfaces with a diameter that decreases toward an interior of said glass substrate;

    providing a reflective coating on a surface of said round depression; and

    dividing said glass substrate along a plane parallel with said pair of major surfaces so as to bisect said depression, said step of dividing thereby producing a pair of half bodies each carrying a groove corresponding to said depression on an upper major surface thereof such that said groove continues from said upper major surface to an end surface of said half body corresponding to said end surface of said glass substrate.

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