Abstract: An indoor illumination lamp includes a housing to be attached to an interior ceiling of a vehicle and provided with an opening, an interior light lens arranged at the opening of the housing, a chamber provided in the housing and surrounding the opening where the interior light lens is arranged, a light emitting diode arranged at a corner of the chamber and capable of emitting light toward the interior light lens, and a reflector arranged on an inner face in the chamber.

Abstract: A modular tailgate light for a vehicle having an auxiliary lighting plug, the modular tailgate light broadly including a left section, a right section, a middle section, and a power connector. The left section, the right section, and the middle section each include a set of red lights and a set of white lights. The red lights of the middle section include left red lights and right red lights. The modular tailgate light can be used in a small vehicle configuration in which the left and right sections are connected together with the middle section omitted and a large vehicle configuration in which the middle section is connected between the left and right sections. In the large vehicle configuration, the left red lights activate identically to the red lights of the left section and the right red lights activate identically to the red lights of the right section.

Abstract: A lamp base includes a housing for at least partial accommodation of a carrier for a light source. Two mutually-opposing guide rails are provided in the housing for the form-fitted insertion of the carrier. The technology is particularly applicable to carriers with LEDs as light sources and addresses problems with adhesive or soldered attachment of the light source carrier.

Abstract: A light-emitting diode (LED) luminaire comprises an emergency-operated portion comprising a rechargeable battery with a terminal voltage, a self-diagnostic circuit, and a node modulator-demodulator (MODEM). The LED luminaire can auto-switch from a normal power to an emergency power according to availability of the normal power and whether a rechargeable battery test is initiated. The self-diagnostic circuit comprises a data memory and is configured to initiate self-diagnostic tests and to auto-evaluate battery performance according to test schedules with the terminal voltage examined and test results stored and integrated in the data memory. The LED luminaire further comprises a remote controller configured to initiate control signals with phase-shift keying (PSK) signals transmitted and to collect test data to and from the node MODEM. The node MODEM is configured to demodulate the PSK signals and to send commands to the self-diagnostic circuit to request responses accordingly.

Abstract: A light-emitting diode (LED) luminaire emergency driver comprises a rechargeable battery, a power supply unit, an LED driving circuit, a first control circuit, and a second control circuit. The LED driving circuit and the power supply unit each comprises a scalable power control scheme respectively configured to drive external LED arrays with different power levels when the alternate-current (AC) mains are unavailable and to power the first control circuit and to charge the rechargeable battery with different capacity when the AC mains are available. The second control circuit comprises two switches configured to control discharging and charging of the rechargeable battery. The second control circuit further comprises a relay switch circuit configured to control either a first LED driving current from the LED driving circuit or a second LED driving current from an external power supply unit to drive the external LED arrays without crosstalk.

Abstract: The invention provides a lighting device (1) comprising (i) a plurality of sets (310) of each one or more light sources (10) configured to provide light source light (11), and (ii) a plurality of luminescent elements (5), each luminescent element (5) comprising an elongated luminescent body (100) having a radiation input face (111) for receipt of the light source light (11), each luminescent element (5) comprising a luminescent material (120) for conversion of at least part of the light source light (11) into luminescent material light (8), and each luminescent element (5) have an luminescent element exit window (12) for the luminescent material light (8); wherein the luminescent elements (5) are configured in a configuration wherein an average distance (d1) between neighboring luminescent bodies (100) is larger than a shortest luminescent element exit window distance (d2) between the neighboring luminescent element exit windows (12), thereby defining an interspace (320) between the neighboring luminescent bo

Abstract: A light-emitting diode (LED) luminaire comprising an emergency-operated portion is used to replace a luminaire operated only with alternate-current (AC) mains. The emergency-operated portion comprises a rechargeable battery with a terminal voltage, a self-diagnostic circuit, and a transceiver circuit. The LED luminaire can auto-switch from the AC mains to an emergency power or the other way around according to availability of the AC mains and whether a rechargeable battery test is initiated. The self-diagnostic circuit comprises a clock and is configured to initiate self-diagnostic tests and to auto-evaluate battery performance according to test schedules with the terminal voltage examined and test results stored. The LED luminaire further comprises a remote controller configured to initiate remote control signals with phase-shift keying (PSK) signals transmitted.

Abstract: A light emitting module with a reduced thickness is provided. A method of manufacturing a light emitting module sequentially includes: providing a light guiding plate having a first main surface being a light emitting surface, and a second main surface on the side opposite to the first main surface; providing a plurality of light emitting elements on the light guiding plate; and forming a wiring electrically connecting the plurality of light emitting elements. A light emitting module includes: a light guiding plate having a first main surface and a second main surface; a plurality of wavelength conversion parts disposed at the second main surface of the light guiding plate so as to be spaced apart from each other; a plurality of light emitting elements respectively bonded to the plurality of wavelength conversion parts; and a wiring connected to the plurality of light emitting elements.

Abstract: A light-emitting diode (LED) luminaire comprising an emergency-operated portion is used to replace a luminaire operated only in a normal mode with alternate-current (AC) mains. The emergency-operated portion comprises a rechargeable battery with a terminal voltage, a self-diagnostic circuit, and a transceiver circuit. The LED luminaire can auto-switch from the normal mode to an emergency mode or the other way around according to availability of the AC mains and whether a rechargeable battery test is initiated. The self-diagnostic circuit comprises timers and is configured to provide sequences and to auto-evaluate battery performance according to the sequences with the terminal voltage examined and test results stored. The LED luminaire further comprises a remote controller.

Abstract: An emergency lighting and power system comprises a rechargeable battery, an LED driving circuit, and a charging and discharging control circuit. The emergency lighting and power system is intended to automatically supply illumination or power or both in an event of failure of normal power supply. The LED driving circuit is configured to convert a terminal voltage from the rechargeable battery into an AC voltage to operate a luminaire when a line voltage from AC mains is unavailable. The charging and discharging control circuit comprises at least two relay switches configured to sense a loss of normal power supply, to switch between normal power and an emergency power to operate the luminaire in proper situations, and to meet regulatory requirements without operational ambiguity and safety issues.

Abstract: The present disclosure discloses a thread transmission structure, and an optical system and a spotlight using the transmission structure. The thread transmission structure includes a sliding element and a rotation adjustment ring sleeved on an outer ring of the sliding element, the rotation adjustment ring being sleeved on an outer side of the sliding element and coupled to the sliding element, the rotation adjustment ring includes an internal thread, the sliding element includes an external thread, the sliding element includes a plurality of thread segments spaced along a circumferential direction, the plurality of thread segments forming at least one round of interrupted external thread, a thread form of the internal thread and the external thread being trapezoidal or rectangular, and the rotation adjustment ring being rotatable relative to the sliding element to push the sliding element to slide in an axial direction.

Abstract: The invention relates to a vehicle headlamp (1) comprising a light source (2) and an add-on optical unit (3), wherein the light source (2) is fastened on a carrier (10), in which bores (12, 3) are provided in order to each receive a connection means (20, 21). A spacer element (30, 31) is arranged on the carrier (10). A holding bracket (40) is arranged on the spacer element (30, 31). The connection means (20, 21) is intended to connect the holding bracket (40) to the carrier (10) and is for this purpose inserted into a corresponding opening (41, 42) and into the corresponding bore (12, 13). In a first position of the holding bracket (40), in which the connection means (20, 21) is inserted into the opening (41, 42), but is not fixed, the holding bracket (40) can be moved relative to the connection means (20, 21) within the opening (41, 42) in a plane normal to an axis (22, 23) in order to allow the add-on optical unit (3) to be oriented relative to the light source (2) in the plane.

Abstract: Systems and methods for retrofitting an existing troffer light fixture, or for a new installation application, comprising a housing and a door assembly, wherein the door assembly comprises four side walls, a recessed cavity, a light source, one or more lens, and at least one support extension supporting the assembly are disclosed. The support extension may be a fixed horizontal protrusion of the frame of the retrofit assembly and configured to engage a T-bar of a ceiling system. The protrusion may rest on a horizontal portion of the T-bar to thereby support the assembly. Existing troffer light fixtures can be retrofitted to include a more efficient light source, replace components of a damaged troffer style light fixture, and/or otherwise upgrade or replace an existing fixture. The retrofit assembly may enable existing fixtures to be modified from a number of different fixture types without the need to remove and replace components of the existing fixture.

Abstract: An LED luminaire emergency driver comprises a rechargeable battery, a charger circuit, an LED driving circuit, and a charging and discharging control circuit. The LED luminaire emergency driver is intended to automatically supply a first supplied voltage to drive LED arrays in an event of a normal power failure. The LED driving circuit is configured to convert a terminal voltage from the rechargeable battery into the first supplied voltage when a line voltage from AC mains is unavailable. The charging and discharging control circuit comprises a relay switch and a transistor circuit assembly configured to sense a charging voltage, to control switching between normal power and an emergency power to operate the LED arrays, and to meet regulatory requirements without operational ambiguity and safety issues.

Abstract: The invention relates to a circuit assembly (1) comprising a printed circuit board (2), at least one micromirror component (3) which is connected to the printed circuit board (2) for modulating a light beam oriented towards the micromirror component (3), a cooling body which is thermally connected to the at least one micromirror component (3), and a current regulating unit (5). The micromirror component (3) has a heating element (3a) which can be controlled by the current regulating unit (5), and the current regulating unit (5) is electrically connected to the heating element (3a) in order to actuate same. The current regulating unit (5) is additionally connected to the micromirror component (3) via a thermal connection to the cooling body (4) in order to transfer heat losses occurring on the current regulating unit (5).

Abstract: A light-emitting diode (LED) luminaire comprises an emergency-operated portion comprising a rechargeable battery with a terminal voltage, a self-diagnostic circuit, and a node modulator-demodulator (MODEM). The LED luminaire can auto-switch from a normal power to an emergency power according to availability of the normal power and whether a rechargeable battery test is initiated. The self-diagnostic circuit comprises a clock and is configured to initiate self-diagnostic tests and to auto-evaluate battery performance according to test schedules with the terminal voltage examined and each of test results sent to a remote control unit that comprises a data-centric circuitry comprising a variety of data communication devices configured to initiate command data with phase-shift keying (PSK) signals transmitted via a principal MODEM and to periodically collect each of test data to and from the node MODEM. The test data assembled are ultimately transferred to a root server for further reviews.

Abstract: A light-emitting diode (LED) luminaire comprises an emergency-operated portion comprising a rechargeable battery with a terminal voltage, a self-diagnostic circuit, and a node modulator-demodulator (MODEM). The LED luminaire can auto-switch from a normal power to an emergency power according to availability of the normal power and whether a rechargeable battery test is initiated. The self-diagnostic circuit comprises a clock and is configured to initiate self-diagnostic tests and to auto-evaluate battery performance according to test schedules with the terminal voltage examined and test results stored. The LED luminaire further comprises a remote controller configured to initiate control signals with phase-shift keying (PSK) signals transmitted and to collect test data to and from the node MODEM. The node MODEM is configured to demodulate the PSK signals and to send commands to the self-diagnostic circuit to request responses accordingly.

Abstract: A vehicle lamp includes a light emitting source, a support substrate configured to support the light emitting source, a heat sink configured to support the support substrate and dissipate heat from the light emitting source, and a light controller configured to control light from the light emitting source. The heat sink includes an opening configured to measure the radiant heat of the support substrate.

Abstract: A light fixture, for a ceiling plenum system defining an upstream space and a downstream space, includes a light-fixture base defining a light-fixture axis. First and second side walls extend toward the downstream space and are sealingly attached to the base plate and to first and second end plates. First and second legs are sealingly attached to the light-fixture base by one of a first-leg continuously welded joint and a first-leg monolithic connection. A downstream end of each leg forms a knife portion. First and second gas filters each comprise an orthogonal gas-filter frame defining an interior perimeter and an exterior perimeter. A trough with sealant affixed therein is sealingly attached to and surrounds a portion of the exterior perimeter. A trough opening faces the downstream space, with the knife portions penetrating surfaces of the sealant, forming a seal between the light-fixture base and each gas filter.

Abstract: The present application discloses a light pipe assembly having a light pipe with a proximal end, an opposing distal end, a length between the proximal end and the distal end, and a surface, the surface having an emitting portion and an overlay portion, where the light pipe is a material capable of transmitting light with a first refractive index; and a reflective secondary surface having a second refractive index and a width, the reflective secondary surface positioned adjacent the overlay portion of the light pipe, where the first refractive index is greater than the refractive index of air, and the second refractive index is greater than the first refractive index. In at least one embodiment, the reflective secondary surface is a non-metallic material capable of reflecting light. In at least one embodiment, the width of the reflective secondary surface varies along the length of the light pipe.