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Total-internal-reflection fiber optic interface modules with different optical paths and assemblies using same

  • US 9,052,478 B2
  • Filed: 03/30/2012
  • Issued: 06/09/2015
  • Est. Priority Date: 03/30/2012
  • Status: Active Grant
First Claim
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1. A fiber optic interface module configured to support first and second optical fibers, comprising:

  • a module body having front and rear ends, a top surface, a bottom surface and opposing sides along with optical pathways that are substantially transparent to light having an infrared wavelength;

    first and second optical fiber support features formed in the top surface;

    a ridge formed in the top surface and having first and second end walls defining a step and that respectively terminate the first and second optical fiber support features, and an angled wall that defines a total-internal-reflection (TIR) mirror;

    a recess formed in the module body in the bottom surface adjacent the front end and that defines a ceiling; and

    first and second lens surfaces formed on the ceiling and having respective first and second folded lens axes that are aligned with the first and second optical fiber support features and the TIR mirror, with the first and second lens surfaces and the first and second end walls respectively defining first and second lenses having different first and second folded optical paths with the first and second folded optical paths having different lengths.

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