Abstract: An imaging module in one embodiment is adapted so that a position of a lens assembly can be finely adjusted relative to a position of an image sensor. A retainer and lens assembly according to the invention are complimentary configured so that the lens assembly is slidably received in the retainer. The retainer include in one embodiment two apertures defined in sidewalls thereof. The first aperture accommodates a fixture pin for use in finely adjusting the position of the lens assembly within the retainer. The second aperture accommodates an adhesive material for adhesively bonding the lens assembly to the retainer. Adhesive material may further be applied in the first aperture.

Abstract: An imaging module in one embodiment includes a printed circuit board, an image sensor electrically connected to the printed circuit board, a support assembly for supporting at least one optical element, and an illumination system for generating an illumination pattern onto a target. The illumination system may include illumination light sources and diffusers for diffusing light from the illumination light sources. The module may further include an aiming system having an aiming light source, an aperture for stopping light from the aiming light source, and an optical element for projecting an aiming pattern into target area. Either or both of the illumination and aiming systems may include light redirecting elements such as mirrors or prisms.

Abstract: An imaging module in one embodiment includes an aiming system having a light source, an aperture and an optical element positioned optically forward of the aperture wherein the aiming system projects a crisp and sharp aiming pattern onto a target over a wide range of distances. In one embodiment, an aiming system is configured so that a lens operates as an aperture to project a crisp sharp aiming pattern over a wide range of distances including distances at which the aiming pattern is less than optimally focused. In another embodiment an aiming system is configured so that light emanating from a thin aperture is imaged in such manner that a crisp, sharp aiming pattern is defined over a wide range of distances. The aiming pattern in one embodiment includes sharply defined lateral edges which are useful in sighting target indicia.

Abstract: The present invention is an imaging module including various optical components and a circuit board, which, in one embodiment, carries essentially an entirety of illumination and aiming LEDs of the module. The module includes a combination of features which result in the size of the module being reduced. The module may comprise a refractive optic diffuser plate manufactured using a textured surface mold.

Abstract: The invention relates to a system for processing image data corresponding a scene comprising an imaging device and an image reading instruction indicia. In accordance with the invention, image data corresponding to a scene comprising an image reading instruction indicia is processed in a manner that depends on features of the image reading instruction indicia. If the image reading instruction indicia is of a type whose size, scaling, orientation, and distortion can be determined, scaling, orientation, and distortion characteristics determined from the image reading instruction indicia can be used to improve the image reading process.