| CPC H05K 3/1216 (2013.01) [C03C 17/009 (2013.01); C03C 17/34 (2013.01); C09D 11/52 (2013.01); H01B 1/22 (2013.01); H05B 3/12 (2013.01); H05B 3/18 (2013.01); H05B 3/286 (2013.01); H05B 3/86 (2013.01); H05B 2203/013 (2013.01); H05B 2203/017 (2013.01); H05B 2214/02 (2013.01)] | 5 Claims |

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1. A method of making a sensor, comprising:
establishing a heater on an interior surface of a cover of the sensor device the cover by forming a wire-like trace on the interior surface by depositing a fluid comprising an electrically conductive material directly onto the interior surface of the cover, forming at least one electrically conductive connector pad on the cover by depositing some of the fluid comprising the electrically conductive material directly onto the interior surface of the cover in a pad configuration simultaneously with forming the heater, and curing the deposited electrically conductive material; and
positioning and arranging the cover over an emitter configured to emit radiation and a detector configured to detect the radiation reflected off an object, such that the heater surrounds a contiguous area of the cover, through which the radiation must pass for proper operation of the emitter and the detector, the contiguous area comprising a first zone and a second zone, the first zone having a first length and a first width that is shorter than a second length and a second width of the second zone.
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