Laser module comprising a micro-lens array
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United States of America Patent
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Dec 29, 2020
Grant Date -
May 4, 2017
app pub date -
Nov 3, 2016
filing date -
Nov 4, 2015
priority date (Note) -
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Abstract
Light emitting unit, in particular of or for a triangulation-based distance measuring device, for providing defined measuring light, in particular laser light, is disclosed. The light emitting unit comprising a light source for emitting light, in particular a laser light source for emitting laser light, and a beam forming assembly for shaping the light by affecting propagation of the light emitted by the light source, wherein the beam forming assembly is arranged and designed so that measuring light is provided in form of a light line having a midpoint and two opposite ends. The beam forming assembly comprises at least one micro-lens array, the at least one micro-lens array comprises a plurality of micro-lenses, wherein the micro-lenses are designed and arranged in joint manner next to each other with algebraic signs for curvatures of successive micro-lenses being opposite and so that a periodic structure is provided.
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