A light fixture for producing a light output. The light fixture includes a control printed circuit board and a light module printed circuit board. The control printed circuit board includes an aperture and a first number of printed circuit board layers. The control printed circuit board has a first surface area. The light module printed circuit board is configured to electrically connect to the control printed circuit board at the aperture to allow light from the light module printed circuit board to pass through the aperture. The light module printed circuit board includes a second number of printed circuit board layers. The light module printed circuit board has a second surface area. The first number of printed circuit board layers is greater than the second number of printed circuit board layers. The first surface area is larger than the second surface area.

Disclosed are RCLED lamp bead packaging process and RCLED lamp bead, which comprises steps of: dispensing a die-bonding glue, mounting a chip, baking, welding a bonding wire, dispensing a first layer of anti-reflection adhesive, baking, dispensing a second layer of anti-reflection adhesive, baking, and testing. Anti-reflection adhesive is dispensed in corresponding area to cover part capable of reflecting light in RCLED lamp bead and eliminate reflection effect effectively. The first layer of anti-reflection adhesive fills in specified area rapidly to achieve high production efficiency. The second layer of anti-reflection adhesive flows slowly after glue dispensing, so that the glue dispensing precision is improved and the light-emitting hole is prevent from being covered. When bonding wire is welded, a bracket is the first welding spot and a PAD of the chip is the second welding spot to achieve a lower radian of the bonding wire.

A method includes performing, with a compacting machine, a first pass to compact a first portion of a work area to compact a first lane. A guidance system acquires position information representing the first compacted lane. A second pass is performed to compact a second portion of the work area adjacent the first portion. The guidance system acquires current position information of the machine representing current positioning of the machine during the second pass. Comparing the position information of the machine representing the first compacted lane with the current position information, determines whether the current positioning overlaps the first compacted lane a specified amount. When the second pass is determined to overlap the first compacted lane, in-compliance visual indicia is generated. When the second pass is determined to not overlap the first compacted lane with the specified amount, out of compliance visual indicia is generated.

A vehicle communication system installed in a vehicle includes: a lamp for illumination, a display or signal; a display that is configured by a planar light emitter and has an information display function; and a control unit that is capable of controlling turning-on of the lamp and of the display. The control unit is configured to control the lamp and the display in a linked manner, and present vehicle information indicating a condition of the vehicle by combining light emission of the lamp with information display of the display.

A portable lighting device includes a housing, a light source supported by the housing, and an alkaline battery positioned within the housing and coupled to the light source. The alkaline battery is configured to provide a drive current to the light source, and an intensity of the light source is dependent on the drive current. The portable lighting device also includes an electronic processor positioned within the housing and coupled to the light source and the alkaline battery. The electronic processor is configured to monitor a voltage of the alkaline battery, and execute a ramp-up algorithm to control the drive current based on the voltage of the alkaline battery.

A headlamp with a headband is presented. The headlamp includes: a headband element to receive a lamp body, and a passing hole or vertical conduit for the sliding passage of a tightening elastic link and an attachment clip to make a horizontal sliding connection with an electrically conductive cord, a rear part with a support to hold an electric battery and a locking lever; an electrical conductor cord having two radii of curvature so as to form a “Z”; a movable clip positioned at the first radius of curvature to ensure sliding of said electrically conductive cord with the upper part of the tightening elastic link; a second movable clip positioned at the level of the second radius of curvature to allow the electrically conductive cord to slide with the lower part of said tightening elastic link.

A lighting system for tunnels or similar works. The lighting system with LED diodes, including at least one lighting strip with LED diodes, with at least one set of LED diode modules, the modules of a set being divided up into subsets of one or more modules supplied with power by respective power supply buses, an electronic system supplying power to the strip, making it possible to power up, according to a first mode of operation, all the power supply buses and, in a second mode of operation, only a part of the power supply buses, so as to reduce the electrical consumption of the strip.

A lighting apparatus including an enclosure, a printed circuit board mounted to the enclosure, and an upwardly directed primary light emitting diode in electrical communication with the printed circuit board. The lighting apparatus additionally includes a power source for supplying electrical power to the printed circuit board. The lighting apparatus further includes a transparent dome situated atop the enclosure and covering the printed circuit board, wherein the transparent dome includes an optically unobstructed region in vertical alignment with the primary light emitting diode for passage of an upwardly directed light beam emitted from the primary light emitting diode when powered.

A lighting device assembly includes an outer housing having an inner volume and an inner surface at least partially surrounding the inner volume, a first open end and a second open end. At least one rail is provided on the inner surface of the outer housing. A first heat sink member is received within the first open end of the outer housing and secured to the at least one rail. A light source is attached to the first heat sink member. A cap attaches to the outer housing to cover the second open end. A second heat sink member holding one or more driver electronics modules connects to the light source. The second heat sink member is secured to the cap and is received within the second open end of the outer housing when the cap attaches to the outer housing.

An uplight device for use with a luminaire that has a housing configured to be supported from a surface by a stem with a wireway. The uplight device includes a body having a radially outwardly directed annular flange, a vertically oriented annular rim encircling the annular flange, and a passageway extending through the body, and an uplight substrate supported on a first side of the annular flange. The uplight substrate includes a plurality of light emitting sources arranged in an array on a first side of the uplight substrate. The uplight device further includes an optical lens covering the first side of the annular flange and the uplight substrate. The body of the uplight device is configured to be coupled between the stem and housing of the luminaire such that the passageway communicates with the wireway of the stem and a chamber of the luminaire.