POSITION SENSOR PRODUCTION METHOD, AND POSITION SENSOR PRODUCED BY THE METHOD
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United States of America Patent
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Issued Date -
Aug 18, 2016
app pub date -
Jul 22, 2014
filing date -
Oct 17, 2013
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Abstract
In a position sensor production method, a photosensitive resin layer of a core formation photosensitive resin is light-exposed to form cores in a lattice pattern portion and in a peripheral pattern portion bent along an outer periphery of the lattice pattern portion and form non-light-path dummy cores in the peripheral pattern portion. Surfaces of the exposed portion of the photosensitive resin layer of the core formation photosensitive resin serving as the cores and the non-light-path dummy cores and an exposed portion are covered with a photosensitive resin layer of a second cladding formation photosensitive resin and, in this state, the core formation photosensitive resin of the unexposed portion and the second cladding formation photosensitive resin of the photosensitive resin layer are mixed together by heating to form a mixture layer. The mixture layer is light-exposed to be cured to form an over-cladding layer.
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