An indicia reading device for decoding decodable indicia includes an illumination subsystem, an aimer subsystem, an imaging subsystem, a memory, and a processor. The illumination subsystem is operative for projecting an illumination pattern. The aimer subsystem is operative for projecting an aiming pattern. The imaging subsystem includes a stereoscopic imager. The memory is in communication with the stereoscopic imager and is capable of storing frames of image data representing light incident on the stereoscopic imager. The processor is in communication with the memory and is operative to decode a decodable indicia represented in at least one of the frames of image data. The stereoscopic imager is configured to capture multiple images at a baseline distance apart to create three-dimensional images with depth information of the decodable indicia.

The disclosure relates to a data reading system including a platter having a generally horizontal surface and a bonnet extending perpendicularly from the platter. The platter and bonnet each include a scan window positioned thereon, through which an imager projects a field-of-view to capture encoded data from an item. The fields-of-view of the imagers are non-segmented and are not otherwise redirected by mirrors, prisms, or other optics components. The fields-of-view of the imagers may have sufficiently wide angles to ensure that the collective fields-of-view capture all side surfaces of the item as it passes across the read region of the data reading system.

First and second photodetectors having first and second collection areas receive return laser light that is reflected and scattered from a target, and generate first and second analog electrical output signals having first and second magnitudes. The second collection area is in close proximity to the first collection area. The first output signal is processed to obtain information related to the target. The first and the second output signals are processed, preferably by determining a ratio of the second magnitude to the first magnitude. A working distance to the target is determined based on the determined ratio. One or more reading parameters by which the target is electro-optically read are adjusted based on the determined working distance.

One embodiment of a system and method for imaging a scene from a barcode scanner device may include creating a first and second optical paths of the scene, and then causing a switchable mirror disposed along the first and second optical paths to operate in a reflective state and a transparent state. The barcode scanner device may then capture images at different focal distances and with a different field-of-views when the switchable mirror is operating in the reflective state and the transparent state.

The present invention relates to optical imaging devices and methods for reading optical codes. The image device comprises a sensor, a lens, a plurality of illumination devices, and a plurality of reflective surfaces. The sensor is configured to sense with a predetermined number of lines of pixels, where the predetermined lines of pixels are arranged in a predetermined position. The lens has an imaging path along an optical axis. The plurality of illumination devices are configured to transmit an illumination pattern along the optical axis, and the plurality of reflective surfaces are configured to fold the optical axis.

A camera interface circuit for a barcode scanner includes a binary conversion block and a selection module. The binary conversion block receives image signals from a camera, and converts gray levels of each pixel in each image frame into binary codes. The selection module alternately provides binary codes of one image frame and image signals of a consecutive image frame as outputs.

An imaging device includes a housing with a window on a front surface. A first irradiating section is in the housing at a first distance from the window to illuminate objects in a first region outside the housing with light directed through the window. A second irradiating section is in the housing at a second distance from the window to illuminate objects in a second region outside the housing with light directed through the window. The second region is closer to the housing than the first region. An imaging sensor is in the housing and configured to image objects illuminated by at least one of the first and second irradiating sections. The imaging sensor is closer to a back surface of the housing than the front surface.

A method of scanning and reading indicia off a display is disclosed. The method may utilize a light sensor of a mobile device to improve the quality of reading indicia, such as a barcode, off a display. A scanner illuminates the mobile device in order to increase the backlight intensity and obtain a high contrast image on the display and then ceases illumination in order to scan the high contrast image without specular reflection caused by the scanner illumination. In one embodiment, the scanner illuminates the mobile device for a period of time to achieve the maximum level of brightness that the mobile device is capable of emitting on the display in the period of time before ceasing the illumination. In another embodiment, the scanner detects whether the change in brightness is greater than predefined level before ceasing the illumination.

A compact illuminator for a direct part marking (DPM) scanner is provided to perform dual-field, multi-color, multi-directional, multi-distance illumination functions. The illuminator can selectively provide dark field and bright field illumination with broad spectrum white or narrow band color, in combination with directions for near contact distance as well as far distance barcode readings. Specifically, illuminator includes a front edge illuminator with customized LED optics, a dome diffuser, an LED board assembly, and a reflective sleeve surrounding the dome diffuser. The board assembly can further include an alternative on/off plural point source bright field spot illuminating system. A method for scanning DPM indicia focuses on generating illumination light using an illumination assembly, illuminating the DPM indicia, detecting reflected and/or scattered light, and capturing under different illumination conditions and combining at least two consecutive images of the DPM indicia, followed by processing and decoding the obtained image.

One embodiment of a system and method for imaging a scene from a barcode scanner device may include creating a first and second optical paths of the scene, and then causing a switchable mirror disposed along the first and second optical paths to operate in a reflective state and a transparent state. The barcode scanner device may then capture images at different focal distances and with a different field-of-views when the switchable mirror is operating in the reflective state and the transparent state.