×

Imaging module for optical reader

  • US 7,500,614 B2
  • Filed: 11/16/2006
  • Issued: 03/10/2009
  • Est. Priority Date: 10/04/1999
  • Status: Expired due to Fees
First Claim
Patent Images

1. An optical reader comprising:

  • a mounting frame, said mounting frame defining an interior volume;

    a printed circuit board coupled to said mounting frame;

    an image sensor mounted on said printed circuit board, said image sensor disposed such that the field of view of said image sensor faces said interior volume, wherein said image sensor is a two dimensional image sensor;

    imaging optics coupled to said image sensor, said imaging optics at least partially disposed within said interior volume;

    at least one illumination light emitting diode coupled to said printed circuit board wherein said at least one illumination light emitting diode is disposed within said interior volume;

    at least one aiming light emitting diode coupled to said printed circuit board wherein said at least one aiming light emitting diode is disposed within said interior volume;

    an aperture plate disposed proximate to said at least one illumination light emitting diode and said at least one aiming light emitting diode;

    a diffuser plate coupled to said mounting frame, wherein said aperture plate is disposed between said aperture plate and said mounting frame, wherein said diffuser plate applies a clamping force to said aperture plate thereby holding said aperture plate in a predetermined position;

    a control circuit for controlling the operation of said image sensor, said control circuit disposed on said printed circuit board, said control circuit coupled to said image sensor;

    a signal processing circuit disposed to receive an electrical signal from said image sensor, said signal processing circuit mounted on said printed circuit board;

    an image capture circuit adapted to receive the electrical signal from said signal processing circuit and store said electrical signal, said image capture circuit mounted on said printed circuit board; and

    an image decoding and/or recognition circuit coupled to said image capture circuit, said image decoding and/or recognition circuit mounted on said printed circuit board;

    wherein the receive axis of said image sensor is substantially perpendicular to said printed circuit board;

    wherein said aperture plate defines at least one opening for allowing light generated by said at least one illumination light emitting diode to pass through; and

    wherein said aperture plate defines at least one opening for allowing light generated by said at least one aiming light emitting diode to pass through.

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