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Fibre optic waveguide illuminating elements

  • US 4,961,617 A
  • Filed: 07/19/1989
  • Issued: 10/09/1990
  • Est. Priority Date: 07/19/1989
  • Status: Expired due to Fees
First Claim
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1. A fibre optic element comprising a sheet moulded from synthetic plastic material having high light transmissivity, two opposite edges of the sheet each having a coplaner extension formed with grooves or slots dividing the extensions into a plurality of separable flexible filaments extending longitudinally from said edges of the sheet, and the sheet and extension being substantially covered, except for distal ends of said filaments and at least one area on at least one side of the sheet via which light can escape, by an internally reflective layer which constrains light entering the element through said filamwents to propagate longitudinally of the filaments and in the plane of the sheet.

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