Abstract: A system and method for an active Q-switched fiber laser cavity may include a pump source for emitting a laser beam at a wavelength along an optical path including an active optical medium. A modulation device may be configured to introduce tunable losses into the optical path. The tunable losses may be achieved through modulation of the transmissivity of an optical element within the optical path, the modulation of said optical element being performed over (i) a first period of time in which a cavity Q curve increases from a first percentage value to a second percentage value of a maximum Q value and (ii) a second period of time in which the cavity Q curve increases from a third percentage value to a fourth percentage value of the maximum Q value. The cavity Q curve may non-linearly and smoothly transition between (i) the first and second percentage values and (ii) the third and fourth percentage values.

Abstract: The invention relates to an optical unit for an opto-electronic system, said optical unit comprising: a first and a second opto-electronic component; a casing suitable for containing said first and second opto-electronic component; and a fastening system suitable for connecting together said first and second opto-electronic components, characterized in that said fastening system is fixed to a first end of said first opto-electronic component and to a first end of said second opto-electronic component and comprises: an elastic device movable between an undeformed operative position and a compressed operative position, and a mechanical fastening device suitable for taking said elastic device into said compressed operative position when said mechanical fastening device couples together said first and said second optoelectronic component.

Abstract: Systems and methods for securing and charging a machine-readable symbol reader in a position that enables the machine-readable symbol reader to continue to capture machine readable codes. The machine-readable symbol reader is secured by a stand that includes a base, an arm, and a cradle. The cradle includes a housing that forms a cavity that is sized and shaped to securely receive a portion of the head of the machine-readable symbol reader. The cavity may further align the window on the secured machine-readable symbol reader with an aperture such that the machine-readable symbol reader can continue to capture visual representations of machine-readable symbols.

Abstract: The present disclosure relates to data readers including an improved imaging system that optimizes active and passive autofocus techniques for improving data reading functions. In an example, the data reader initially uses active autofocus techniques to focus a lens system based on a measurement reading by a rangefinder and acquire an image of an item in the field-of-view of the data reader. The data reader includes a decoding engine operable to decode an optical code of the item using the acquired image. If the decoding engine is unable to decode the optical code using the active autofocus technique, the data reader alternates to a passive autofocus technique to alter the focus settings of the lens system and reattempt the decoding process.

Abstract: A reader contains a housing with a window having a peripheral rim. The housing has a device for reading coded information which generates a field projecting through the window towards the outside of the housing, and has a device for visually indicating the result to a user. The visual indication device generates an indication appearing substantially at least on the window, on a portion of the peripheral rim of the window, or on a portion of the housing adjoining laterally the peripheral rim of the window. The housing portion is at least on the left side, right side, or below the window. Additionally, a camera based checkout security system includes at least a checkout security camera and a fixed position reader of coded information. The checkout security camera generates a camera field of view directed towards the window of the fixed position reader of coded information.

Abstract: Two or more colors are used in an aiming pattern, where the high contrast between the edges of the two illuminated portions identifies the centerline of the field of view (FOV). The centerline is used as an intuitive and highly recognizable aiming pattern. The colors are generated by light sources, such as LEDs or laser diodes. The edges of the two figures produced by the light sources create a high visibility color contrast line/stripe. Additionally, the aiming pattern can be created using illuminators in the barcode reader, allowing for the barcode to maintain compactness.

Abstract: During a description technique, a local descriptor for an object may be generated by computing a 2-dimensional histogram of pairs of angles between pairs of line segments that are aligned with edge pixels associated with the object. The pairs of line segments belong to a subset of k neighboring or proximate line segments. Moreover, this 2D histogram may represent the relative displacement and the relative orientations of the pairs of line segments in the subset as weights in bins or cells defined by angular quantization values, and the 2D histogram may exclude lengths of the line segments. Subsequently, the generated 2D histogram may be compared to predefined sets of descriptors in a model library that are associated with a set of objects, and the object may be identified as one of the set of objects based on a group of match scores determined in the comparisons.

Abstract: Systems, methods, and computer-readable storage media are provided reconstructing barcode signals utilizing sequence alignment matrices. A barcode signal is received that is associated with a portion of a barcode symbol and includes a sequence of bar elements and space elements in alternating order. A sequence alignment matrix (SAM) is built such that each row represents an element of an already reconstructed portion of the barcode symbol, each column represents an element of the received barcode signal sequence, and the potential alignments are placed on a plurality of diagonals thereof. A score is assigned to each matrix square that includes an element of the received barcode signal sequence and a diagonal score is calculated for each of the plurality of diagonals by summing the scores for each matrix square respectively comprising each of the plurality of diagonals.

Abstract: A decoding device may include a processor that may include a core component configured to: analyze watermark metadata to identify a watermark ROI from among multiple candidate ROIs in response to generation of the watermark metadata, determine whether rectification is to be performed within the watermark ROI, perform watermark decoding with the rectified watermark ROI data to decode data encoded within a digital watermark within the rectified watermark ROI in response to performance of the rectification, and transmit the data to a server via a network in response to successful decode of the data. The processor may also include a SIMD component configured to perform at least one of: a watermark transform with the captured image to generate the watermark metadata, and the rectification within the watermark ROI to generate the rectified watermark ROI data in response to the determination by the core component to perform the rectification.

Abstract: A clutter filter configuration tool for a safety laser scanner. The clutter filter configuration tool may first operate the safety laser scanner in an environment to learn the environmental clutter level and present the same to a user. Subsequent to this “teach-in” phase, the configuration tool may provide a clutter filter selection process which presents the environmental clutter level to the user and allows the user to select a suitable configuration for a clutter filter. The configuration tool may also provide a clutter filter simulation process wherein the clutter filter chosen by the user is verified and a test is performed using the selected clutter filter. The results may be reported on a visualized graph. The configuration tool may also determine a real area to be monitored utilizing a floor projection area and an orientation of the laser scanner.

Abstract: A laser scanner which includes a transmission subsystem and a reception subsystem. The transmission subsystem includes a light source which emits a light beam and a scanning mirror rotatable about an axis which reflects the light beam toward a scanning area and which directs return light from objects toward the reception subsystem. The reception system may include a collecting mirror dimensioned and positioned to receive the return light from the scanning mirror. The reception system may also include a dichroic or interference filter disposed between the collecting mirror and the scanning mirror. The interference filter filters the return light from the scanning mirror and provides the filtered return light to the collecting mirror. The reception subsystem also includes a light detector disposed between the interference filter and the collecting mirror, in operation the light detector receives the filtered return light reflected from the collecting mirror.

Abstract: A trigger assembly and scanner terminal are described. The trigger assembly includes two parts. A rigid first part stores a pressure sensitive switch and a printed circuit board. An elastic second part contacts the pressure sensitive switch in response to a level of pressure applied to the trigger assembly. The first part and second part are formed from a continuous piece.

Abstract: An optoelectronic sensor for detecting features of an object comprises means for controlling the operation of said sensor and a face for interaction with an operator provided with adjusting means for adjusting operating parameters of the sensor. The means for controlling is connected to the adjusting means to detect a setting of the operating parameters, and the adjusting means comprises a knob, which is rotatable around an axis for adjusting at least one predetermined parameter among operating parameters. The sensor comprises a multiturn encoder that is actuatable by the knob, and the means for controlling are connected to the multiturn encoder to obtain a rotation mode of said knob, for example a rotation direction and/or a rotation speed, so as to associate with said detected rotation mode a corresponding setting mode of the predetermined parameter, for example a setting with a first coarse sensitivity, or a second fine sensitivity.

Abstract: A reader includes a scanning head that includes an optical sensor to capture an indicia that encodes data and a processor to interpret the indicia to decode the data, and an elongate handle connected at a first end to the scanning head and graspable to orient the optical sensor toward the indicia. The elongate handle includes a first handle receiving coil disposed at a second end of the elongate handle opposite the first end, and oriented parallel to a first side of the elongate handle, a second handle receiving coil disposed at the second end, and oriented parallel to a second side of the elongate handle that is opposite the first side of the elongate handle, and a battery to provide electric power to the processor and the optical sensor, and configured to be recharged via the first and second handle receiving coils.

Abstract: An imager module for an optical code reader may include a camera comprising a lens system, and an actuator for moving the lens system operatively connected to the lens system for autofocus adjustment. The actuator for moving the lens system comprises a linear electric motor with a drive shaft, a position sensor device adapted to detect the position of the drive shaft within a predefined stroke length and a control device adapted to control the movement of the drive shaft. The control device and the position sensor device are integrated in a single PCB, the electric motor comprises a frame that supports the drive shaft, and the single PCB constitutes part of said frame. On optical code reader may include such an imager module.