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Surface-type optical apparatus

  • US 6,852,968 B1
  • Filed: 03/06/2000
  • Issued: 02/08/2005
  • Est. Priority Date: 03/08/1999
  • Status: Expired due to Fees
First Claim
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1. A surface optical apparatus comprising:

  • a surface light emitting device;

    a substrate for supporting a light device; and

    a photodetector to detect output light from the surface light emitting device, wherein the surface light emitting device includes a protrusion with an opening placed on a light emitting region of said surface light emitting device and wherein the surface light emitting device and the photodetector are stacked on the substrate.

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