Patent ID: 11964404
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 17:
18. A method of assembling a shaving unit for an electric shaver, the method comprising:
providing a lighting module comprising:
providing a lighting module housing comprising an upper wall, which comprises a light output surface, and side walls defining in combination with the upper wall a cavity of the lighting module housing, wherein the upper wall has an internal surface facing into the cavity;
providing a lighting unit comprising a PCB and one or more lighting elements mounted to a first main surface of the PCB,
disposing on the internal surface of the upper wall a layer of an optically transmissive potting material;
placing the lighting unit onto the layer of the potting material in the cavity, with the first main surface of the PCB facing toward the upper wall, so that the first main surface of the PCB is wetted by the potting material and the one or more lighting elements are each encapsulated by the potting material;
providing a further layer of the potting material over the lighting unit to cover a second main surface of the PCB opposite to the first main surface, whereby the lighting unit is fully encapsulated by the potting material; and
setting the potting material;
wherein during operation of the shaving unit, the light output surface comes into contact with skin of a user when applying the shaving unit to the skin for shaving.