Abstract: A multicamera imaging-based bar code reader 10 for imaging a target bar code 30 on a target object 32 features: a housing 20 supporting a plurality of transparent windows H, V and defining an interior region, an imaging system including a plurality of camera assemblies C1-C5 coupled to an image processing system, each camera assembly of the plurality of camera assemblies being positioned within the housing interior. Each camera assembly includes a sensor array. One or more light reflecting fold mirrors M1-M14 define a camera assembly field of view positioned with respect to said light source and the sensor array at locations along a light path to transmit light from light source to the field of view and transmit light that bounces from a target in the field of view back along said light path to the image capture sensor array.

Abstract: A method and apparatus are provided comprising a dual window scanner (10, 200, 400) for imaging a target bar code (30) on a target object (32). The dual window scanner comprises a housing (20) supporting two transparent windows (V, H) and defining an interior region (18). The dual window scanner further comprises an imaging system including a plurality of cameras (C1-C6) wherein each camera is positioned within the housing interior region (18) and defines a field-of-view which is different than a field-of-view of each other camera of the plurality of cameras, each camera includes a sensor array (40). Each camera in the plurality of cameras located within the housing for directing the respective field-of-views such that the field-of-views substantially fill the surface of the two transparent windows.

Abstract: An imager (12) is provided for imaging target objects (26) comprising an illumination source (22) for providing illumination (24) that is reflected (30) from a target object (26), an intensity of the illumination being a function of a magnitude of current provided to the illumination source (22) and photosensitive circuitry (36) located within the imager (12) for capturing an image reflected from the target object (26) to the imager (12) while the imager is activated during an exposure period. The imager (12) further comprises a selectively adjustable imaging mode (120) for selecting either of: the magnitude of current (130) provided to the illumination source (22) or exposure period (230) of the imager such that the other of the magnitude of current or exposure period of the imager is automatically adjusted (150, 240) as a result of the selection.

Abstract: An imaging system for an imaging-based bar code reader for capturing an image of a target bar code. In one exemplary embodiment, the imaging system includes: a sensor array including an array of photosensitive elements for converting, light impinging on the array of photosensitive elements into electrical signals based on light intensity; an imaging lens system for focusing light from a field of view onto the sensor array, the imaging lens system including a first lens assembly and a second lens assembly, the first lens assembly defining a first field of view and the second lens assembly defining a second field of view, the first and second fields of view being different; and a control for selectively choosing between the first and second fields of view for imaging the target bar code.

Abstract: An extended working range electro-optical scanner (10) for reading a target bar code (100).

Abstract: A scan engine (15) includes illumination sources (48, 50) for projecting a light beam (40) upon a target object, a focusing lens (44) that receives a reflected light (34) of the target object and focuses a reflected image (35) as it passes through the focusing lens (44) along an optical axis (A-A), and a linear sensor (46) that receives the reflected image (35) from the focusing lens (44). The linear sensor (46) provides a signal (59) representing the reflected image (34). A circuit board (16) is integrally connected to the illumination sources (48, 50) and the linear sensor (46).

Abstract: An imaging system (20) for an imaging-base bar code reader (10) having a housing (11) and a window (17). The imaging system (20) includes a dual camera assembly (22) having a first camera assembly (24) and a second camera assembly (26) mounted within the housing (11) to image a target object (14a, 14b). The first camera assembly (24) includes a first field of view (FOV1) and the second camera assembly (26) including a second field of view (FOV2). The imaging system (20) further includes a fold mirror (36, 37) and positioned within the bar code reader housing (11) to intersect and direct the field of view of at least one of the first and second camera assemblies (24, 26) such that the first and second fields of view (FOV1, FOV2) pass through the exit window (17) and are substantially congruent exterior of the housing (11).

Abstract: A plastic lens includes refractive and diffractive optical apparatus configured to produce optothermal changes substantially canceling each other over a predetermined working temperature range to render the plastic lens substantially athermalized over the range.

Abstract: A miniaturized electro-optical, retro-reflective scanning module. The module has a base, a first circuit board, and a second circuit board mounted substantially orthogonal to the first circuit board. The base supports a light emitter for producing a scanning beam and optical elements for directing and collecting light energy. The emitted beam reflects off a fold mirror onto a reflector mounted on a drive for oscillation. The oscillating reflector, in turn, redirects the beam onto an indicia being read. The reflected light is reflected off the oscillating reflector and directed to the collection mirror before reaching a detector. The detector included in the module senses light reflected from an indicia scanned by the beam. The reflector is driven by an electro-magnetiz driven system, including a flexure and an actuation arm.

Abstract: In a system for electro-optically reading bar code symbols, a movable reflector is rearwardly positioned in a hand-held housing. A sensor receives light reflected off a bar code symbol from the reflector over a scan that extends across the entire bar code symbol. The housing has a window, a front end and a handle for enabling a user to hold and support the housing in one's hand, and to aim the front end of the housing at the bar code symbol during reading. A signal processor in the housing processes an electrical signal from the sensor to generate therefrom data descriptive of the bar code symbol being read. The reflector is positioned at a distance from the front end of the housing, and the length of the scan is proportional to that distance.

Abstract: A plurality of printed circuit boards is mounted within a housing of a data collection terminal. The boards lie in respective planes generally parallel to the plane of a top wall of the housing. The boards are spaced apart along an upright direction generally normal to the plane of the top wall. Terminal components are mounted on the circuit boards.

Abstract: In bar code symbol scanning systems employing laser, optical and sensor components, a mirrorless scanner arrangement mounts one or more of these components on a drive for repetitive reciprocating laser movement either about an axis or in a plane to effect scanning.

Abstract: In a system for electro-optically reading bar code symbols, a movable reflector is positioned for directly receiving light reflected off a bar code symbol, and for reflecting this light to a sensor. The reflector movement provides the sensor with a field of view that extends across the entire bar code symbol. The reflector and the sensor are mounted in a housing having a handle for enabling a user to hold and support the housing in one's hand, and to aim the housing at the bar code symbol during reading. A signal processor in the housing processes an electrical signal from the sensor to generate therefrom data descriptive of the bar code symbol being read.

Abstract: In bar code symbol scanning systems employing laser, optical and sensor components, a mirrorless scanner arrangement mounts one or more of these components on a drive for repetitive reciprocating movement either about an axis or in a plane to effect scanning.

Abstract: In bar code symbol scanning systems employing laser, optical and sensor components, a mirrorless scanner arrangement mounts the laser diode and optical element components on a drive for repetitive reciprocating movement relative to a stationary photodetector component to effect scanning.

Abstract: A louver is mounted adjacent a sensor in a housing of a laser scanning head of a system for electro-optically reading bar code symbols. The louver includes a plurality of mutually parallel, permanently-open slots. The slats are inclined to allow more light from far-out symbols to reach the sensor as compared to close-in symbols.

Abstract: In a system for electro-optically reading coded indicia, such as bar code symbols, a light sensor in a scanning head generates higher amplitude electrical signals for symbols closer to the head, and lower amplitude electrical signals for symbols further from the head. To decrease this amplitude variation, and thereby increase the depth of the field of the system, various optical elements such as a lens, a louver, a filter and a shade, are proposed.

Abstract: A scanning head for reading bar code signals including a laser source producing a beam which is scanned across a symbol to be read by a moving mirror arrangement, and a photodetector responsive to light reflected from the symbol. The signal from the photodetector is digitized and decoded to recover bar code data. The scanning head includes a manually actuated input and display device. A microprocessor in the head controls the operation of the various components. A transmitter and receiver may be located in the scanning head for communication with a central computer, and a battery may be included in the head as a power supply so that the scanning head need not be connected by a cable to a terminal.

Abstract: In bar code symbol scanning systems employing laser, optical and sensor components, a mirrorless scanner arrangement mounts one or more of these components on a drive for repetitive reciprocating movement either about an axis or in a plane to effect scanning.

Abstract: In bar code symbol scanning systems employing laser, optical and sensor components, a mirrorless scanner arrangement mounts one or more of these components on a drive for repetitive reciprocating movement either about an axis or in a plane to effect scanning.