US 7,500,614 B2
Imaging module for optical reader
Charles P. Barber, Fayetteville, N.Y. (US); Carl W. Gerst, III, Skaneateles, N.Y. (US); Vivian L. Hunter, Baldwinsville, N.Y. (US); Melvin D. McCall, Homer, N.Y. (US); and Bruce L. Hahn, Syracuse, N.Y. (US)
Assigned to Hand Held Products, Inc., Skaneateles Falls, N.Y. (US)
Filed on Nov. 16, 2006, as Appl. No. 11/600,591.
Application 11/600591 is a continuation of application No. 10/613208, filed on Jul. 03, 2003.
Application 10/613208 is a continuation of application No. 09/411936, filed on Oct. 04, 1999, abandoned.
Prior Publication US 2007/0152055 A1, Jul. 05, 2007
Int. Cl. G06K 7/10 (2006.01)
U.S. Cl. 235—462.43  [235/472.01; 235/383] 20 Claims
OG exemplary drawing
 
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.