×

Photoelectric sensor with a circular polarizing lens attached to its housing

  • US 5,326,968 A
  • Filed: 03/12/1993
  • Issued: 07/05/1994
  • Est. Priority Date: 03/12/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A photoelectric sensor, comprising:

  • a housing having a light transmissive operative face, said operative face being formed as an integral portion of said housing;

    a light emitting device disposed within said housing for directing light through said operative face in a direction away from said housing;

    a light sensitive device disposed within said housing for responding to light passing through said operative face in a direction from outside of said housing; and

    a laminated polarizing member attached to an outer surface of said operative face of said housing, said polarizing member being disposed in light transmission association with said operative face, said polarizing member comprising a planar portion having a periphery, said periphery being encapsulated within a molded rim, said molded rim being attached to said housing, said molded rim being attached to said housing by ultrasonic welding, said molded rim being fused to said housing along a preformed ridge extending from said molded rim in a direction toward said housing.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×