An assembly is provided herein for a lighting fixture and for retrofitting a flush mounted light fixture to be provided with solid state lighting.

A lighting device (10) is disclosed comprising a glass housing (20) delimiting an optical chamber (21), wherein at least one solid state lighting (SSL) element (30) is mounted within the optical chamber. The optical chamber (21) further comprises a light exit window (50) mounted in an aperture (23) of the optical chamber opposite the at least one solid state lighting element, the light exit window comprising a sealing plate sealed to the glass housing by a glass seal (51); and a light-transmissive thermal barrier (40) extending across the optical chamber in between the sealing plate and the at least one solid state lighting element, which protects the at least one SSL element (30) from thermal damage during the formation of the glass seal (51). Also disclosed are a luminaire including such a lighting device and a method of manufacturing such a lighting device.

A lighting device is disclosed that comprises a glass tube (10); a solid state lighting assembly in said glass tube, said assembly comprising an electrically insulating optical film (20) comprising at least one arcuate portion lining a part (12) of the inner surface of the glass tube, wherein the glass tube further comprises a further part (14) defining a light exit portion; and a plurality of solid state lighting elements (32) on a carrier (30), said carrier contacting said optical film; a thermally conductive member (40, 42) in between at least a part of the solid state lighting assembly and the glass tube for thermally coupling the solid state lighting elements to the glass tube; and a transparent or translucent electrically insulating cover (50, 60) contacting the electrically insulating optical film and covering the solid state lighting elements. A luminaire including such a lighting device and a lighting device assembly method are also disclosed.

An apparatus, system, and method for lighting effects, including simulating a flame. A three dimensional carrier includes an array of a plurality of light sources distributed on it. A control circuit coordinates on/off of the light sources in a manner to simulate a jumping flame. In one embodiment, the three dimensional carrier and LEDs are encapsulated in an at least partially light transmissive cover. This light modular engine includes a control circuit and an interface to electrical power. The system can include the light engine in a light fixture such as an architectural fixture. The methodology can include a sequence of on/off and brightness variations for the array of light sources.

An LED tube lamp comprises an LED module for emitting light; and a ballast interface circuit coupled to the LED module and comprising a thyristor device configured to determine whether an input external driving signal is a high frequency or high voltage signal. When the external driving signal is determined to be a high frequency or high voltage signal, the ballast interface circuit causes current conduction in the LED module for emitting light, and specifically the thyristor device is configured to conduct current upon the external driving signal being input. The ballast interface circuit further comprises a transistor, an inductor, and a resistor connected to each other; and the inductor is coupled between a terminal of the thyristor device and the LED module. Upon the thyristor device being turned on a current flowing through the inductor and the transistor maintains the conduction state of the thyristor device.

One embodiment provides a system, including: a first end that screws into a light bulb socket; an internal light source; an electric insect control mechanism disposed around and proximate to the internal light source; and a visible light source disposed at an opposite end with respect to the first end. Other embodiments are described and claimed.

An LED lamp and it power source module are provided. The LED lamp includes an LED module and a power source module. The power source module includes two rectifying circuits, a filtering capacitor, a plurality of fuses, two filament-simulating circuits, and a discharge device. Each of the filament-simulating circuits is configured to allow a current to flow from one pin to the other pin via the corresponding first and second filament-simulating circuits during a pre-heat process executed by a ballast.

An LED tube lamp comprises a glass tube, two end caps, an LED light strip inside the glass tube, a plurality of LED light sources on the LED light strip, a power supply module and an adhesive. The glass tube comprises a main body has an outer surface and two rear end regions respectively at two ends of the main body. The outer diameter of each of the rear end regions is less than that of the main body. Each of the end caps comprises a tubular wall sleeving over the respective rear end region and an end wall substantially perpendicular to the axial direction of the tubular wall and connected to an end of the tubular wall. The diameter of the outer surface of the main body is substantially the same as the diameter of the outer surface of the tubular wall. The power supply, comprises a rectifying circuit and a filtering circuit, is configured to drive the plurality of LED light sources. The adhesive is disposed between each of the inner surface of the tubular wall and the outer surface of each of the rear end regions.

A circuit board configuration adapted to carry electronic components of a power supply module is provided. The circuit board configuration comprises: a first circuit board, having a first plane configured to dispose and connect a part of the electronic components; and a second circuit board, electrically connected to the first circuit board and having a second plane configured to dispose and connect another part of the electronic components, wherein at least one of the first and the second circuit boards is disposed, perpendicular to an axial direction of the lamp tube, in an interior space formed by the lamp tube and at least one of the two end caps, so that the a direction normal to the first and the second planes is substantially parallel to the axial direction of the lamp tube.

A synthetic quartz glass substrate with an antireflection film, including: a synthetic quartz glass substrate; and an antireflection film formed on a main surface of the synthetic quartz glass substrate, wherein a contact angle measured by a sessile drop method of JIS R 3257:1999 of the main surface of the synthetic quartz glass substrate is within 5 degrees, and the antireflection film includes a first layer containing Al.sub.2O.sub.3, a second layer containing HfO.sub.2, and a third layer containing MgF.sub.2 or SiO.sub.2 sequentially laminated on the main surface of the synthetic quartz glass substrate.