Patent ID: 9687314
Date: 2017-06-27
CPC Classifications: A61B,B29C,F21V,F21W

Claim:
1. A medical headlamp having a front surface from which an output light beam is emitted, comprising: (a) a high efficiency light source assembly producing a high efficiency light source beam having a high efficiency light source beamwidth, said assembly having: (b) an optical assembly positioned to receive light from said high efficiency light source assembly and produce a lamp light beam emitted from said front surface of said medical headlamp; (c) a housing supporting said light source and said optical assembly and an electrical conductor connected to said light source, for supplying electricity to said light source; and (d) an annular light block, defining an annulus that is placed about and circumferentially touches said silicone lens and having a forward facing surface facing toward said front surface of said lamp and a rearward facing surface facing in opposite direction from said forward facing surface, so that said lens protrudes through said annulus and said light block rearward facing surface blocks peripheral light produced by said light source, leaving an annular light block exit beam, having a beamwidth substantially the same as said high efficiency light source beamwidth, but wherein said annular light block exit beam has a sharper border than said high efficiency light source light beam, thereby creating a sharp boundary for said output light beam.