Patent ID: 11920951
Assignee: OMRON CORPORATION
Field: Optics (Instruments)
Classification: CPC G  C | IPC G

Claim 13:
14. A method for manufacturing a photoelectric sensor in which an opening provided in a housing is covered with a cover lens to allow at least one of light emitted from a light projecting unit and light received by a light receiving unit from outside to pass through, the light projecting unit and the light receiving unit being housed in the housing, the method comprising:
a step of applying antifouling coating to an outer surface and an inner surface of the cover lens;
a step of creating a region to which the antifouling coating is not applied in a portion of the cover lens;
a step of arranging the cover lens in a manner of covering the opening; and
a step of joining the cover lens and the housing in the region of the cover lens to which the antifouling coating is not applied,
wherein a material constituting the antifouling coating is a structure comprising a coating base material and an antifouling material to form a one-layer structure in which the coating base material and the antifouling coating material are chemically crosslinked.