Disclosed is a lighting control system for directing a show. The system includes at least: a master device; and a plurality of slave devices that receive lighting control signals from the master device. The light control signals correspond to seats of a plurality of audiences in an auditorium. The plurality of slave devices receive position information indicating specific positions at which the plurality of slave devices emit a light, light-emitting status information including preset information to classify the plurality of slave devices into a plurality of groups, and group identification number information. The plurality of slave devices are grouped in accordance with received information. The master device controls the grouped plurality of slave devices to emit a light per group basis by broadcasting the lighting control signals including group light-emitting pattern information for each of the plurality of groups of the plurality of slave devices.

A passive illumination device for use with at least one light source unit of an image receiver, in particular of a code reading device and/or code verification device, has at least one diffuser unit which is configured for converting light provided by the light source unit into at least substantially diffuse illumination light for an illumination of at least one illumination region and which comprises at least one diffuser element with at least one diffusion shell for a scattering of the light.

A method for manually reading a code marked on an article having a first main face on a first side and a second main face, opposite the first main face, on a second side, wherein, with the article being fixed, a portable device equipped with an optical imaging system including at least one optical sensor is positioned on the first side of the article so as to place the optical sensor facing the code in a reading direction corresponding to the observation direction of the imaging system, and wherein, with the code being illuminated by a light source located on the second side of the article, at least one image of the code is acquired by the optical imaging system.

A barcode reader has a weigh platter and an off-platter detection assembly. The weigh platter is configured to measure a weight of an object and has a surface extending in a first transverse plane, a proximal edge, a first lateral edge extending non-parallel to the proximal edge, and a distal edge. The off-platter detection assembly includes a light emission assembly and a light detection assembly. The light emission assembly is configured to emit a collimated light beam along the first lateral edge, above the surface. The light diffusing barrier is positioned in a path of the collimated light beam and is configured to diffuse the light beam such that the light diffusing barrier appears to be illuminated when contacted by the light beam and appears not to be illuminated when not contacted by the light beam.

A barcoded end facet printed photonic chip includes: an optically transparent direct laser writing substrate including a transverse waveguide writing surface to receive a direct write laser light for off-axis direct write laser printing and a facet surface to receive the direct write laser light for on-axis direct write laser printing of a barcode-guided direct laser written optical coupling on the facet surface; a waveguide disposed in the optically transparent direct laser writing substrate and in optical communication with the facet surface; and an optically visible bulk impregnated barcode disposed in the optically transparent direct laser writing substrate arranged proximate to the waveguide and in optical communication with the facet surface.

A multi-functional optical illuminator comprises: a light pipe (302) with an open frame structure for visual aiming of the illuminator to facilitate an alignment of a barcode; and a circuit board (304), attached to a back opening of the light pipe (302), comprising six dark field LEDs (308) for generating six dark field illuminations and two bright field LEDs (306) for generating bright field illuminations; wherein, the two bright field LEDs (306) produce two alternating point sources for providing bright field illuminations in different directions to minimize a specular reflection hot spot without using any diffuser during the bright field illuminations; wherein, chamfered inner edges of the light pipe (302) emit the dark field illuminations in different orientations from the light pipe (302). The illuminator is designed to provide dual-field, multi-color, multi-directional illumination. The non-closed form option not only can further reduce the weight but also can allow arrange opening area clearance for: (1) visual aiming and alignment in application, especially for hand held application; (2) reducing illumination crosstalk to unwanted directions; and for (3) mechanical integration. The improvements allow the illuminator to read direct product marking (DPM) type of barcodes.

Symbology readers and methods of reading DPM codes on objects therewith are provided. The symbology reader include a housing that defines a cavity having a first portion and a second portion. A window that separates the first portion and the second portion of the cavity is positioned within the cavity. The symbology reader includes a diffuser configured to diffusingly reflect light that impinges thereon positioned within the first portion of the cavity. The symbology reader includes an imaging assembly and a first illumination assembly positioned within the second portion of the cavity. The symbology reader includes an optical element configured to direct illumination light to impinge upon the diffuser.

An apparatus for capturing an image of at least one object appearing in an imaging field of view (FOV). A housing has an imaging sensor operably coupled with the circuit board, the imaging sensor configured to capture an image frame appearing in the imaging FOV and defining an imaging axis. An illumination assembly has a plurality of light sources operably coupled with the circuit board, a diffuser positioned adjacent to the plurality of light sources, the diffuser configured to generate a diffused light pattern, and a light pipe positioned adjacent to the plurality of light sources to generate a direct illumination pattern and an off-axis illumination pattern, wherein the direct illumination pattern is oriented generally parallel to the imaging axis and the off-axis illumination pattern is configured to intersect the imaging axis.

A modular off-platter detection assembly for use with a barcode reader includes a housing, a first light source, a first light sensor, and a controller operatively coupled to the first light source and the first light sensor. The housing is configured to be removably mounted to the barcode reader, a frame supporting the barcode reader, or the workstation. The first light source is positioned within the housing and emits a first light along a first lateral edge of a weigh platter. The first light sensor is positioned within the housing, has a first field-of-view along the first lateral edge, and is configured to detect at least a portion of the first light reflected towards the housing. The controller is configured to provide a first alert in response to receipt of a first value from the first light sensor indicating there is an object extending across the first lateral edge.

An apparatus for capturing an image of at least one object appearing in an imaging field of view (FOV). A housing has an imaging sensor operably coupled with the circuit board, the imaging sensor configured to capture an image frame appearing in the imaging FOV and defining an imaging axis. An illumination assembly has a plurality of light sources operably coupled with the circuit board, a diffuser positioned adjacent to the plurality of light sources, the diffuser configured to generate a diffused light pattern, and a light pipe positioned adjacent to the plurality of light sources to generate a direct illumination pattern and an off-axis illumination pattern, wherein the direct illumination pattern is oriented generally parallel to the imaging axis and the off-axis illumination pattern is configured to intersect the imaging axis.