THIN FILM HEATER AND CAMERA LENS HAVING THE SAME
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United States of America Patent
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Jun 24, 2021
app pub date -
Feb 14, 2020
filing date -
Feb 14, 2020
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Abstract
A thin film heater includes a heat conductive layer, a heat insulation layer and a heat generation layer. The heat generation layer is disposed between the heat conductive layer and the heat insulation layer. The thermal conductivity of the heat conductive layer is greater than or equal to three times the thermal conductivity of the heat insulation layer.
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