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Optical pickup apparatus and laser diode chip

  • US 20010022768A1
  • Filed: 02/22/2001
  • Published: 09/20/2001
  • Est. Priority Date: 02/22/2000
  • Status: Abandoned Application
First Claim
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1. A laser diode chip for an optical pickup apparatus in which a plurality of light emitting portions having laminate structures are formed on a substrate for emitting laser beams of different wavelengths, wherein respective light emitting points of said plurality of light emitting portions are located at positions separated by different lengths in the laminate direction from the same plane of said substrate.

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