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Semiconductor light emitting system

  • US 5,084,895 A
  • Filed: 02/23/1990
  • Issued: 01/28/1992
  • Est. Priority Date: 02/24/1989
  • Status: Expired due to Term
First Claim
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1. A semiconductor light emitting system, comprising:

  • a semiconductor substrate having a first area and a second area, said second area having a main plane;

    a semiconductor light emitting element disposed on said first area of said semiconductor substrate, said semiconductor light emitting element having a laminated semiconductor body which includes an active layer, a pair of clad layers sandwiching said active layer, and an output plane perpendicular to said main plane of said laminated semiconductor body for emitting a light beam;

    a microlens spaced from said laminated semiconductor body and being disposed on said second area of said semiconductor substrate for focusing said light beam output from said output plane of said laminated semiconductor body, said microlens having a first surface which is substantially planar and which is substantially parallel to said output plane, said first surface of said microlens being spaced from said output plane of said laminated semiconductor body by a predetermined gap distance;

    said microlens being composed of transparent material;

    said microlens having a second surface for emitting said light beam supplied to said first surface from said output plane;

    said first surface and said second surface of said microlens being substantially perpendicular to said main plane of said laminated semiconductor body; and

    a pair of electrode layers attached on said semiconductor substrate and said semiconductor light emitting element, respectively, for energizing said semiconductor light emitting element.

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