×

Missing lens detection system and method

  • US 6,838,679 B2
  • Filed: 06/05/2001
  • Issued: 01/04/2005
  • Est. Priority Date: 11/05/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. An apparatus for detecting the presence or position of a contact lens in a container, comprising:

  • a) a source of electromagnetic energy located relative to the container to direct electromagnetic energy at the container;

    b) a non-imaging detector disposed relative to the container and the source to detect electromagnetic energy from the source which passes through or is reflected by the contact lens and the container; and

    c) means for indicating the presence or position of the contact lens in the container responsive to fluorescence, absorption or reflection of the electromagnetic energy by the product;

    wherein the source emits electromagnetic energy having a wavelength in the visible range, and the detector is sensitive to the electromagnetic energy in the visible range, and the contact lens absorbs electromagnetic energy having a wavelength in the visible range.

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