An optical component includes a support member having a through-hole, a second light-transmissive member disposed inside the through-hole, and having a light incidence face, a light emission face, and an outer peripheral side surface, and at least one functional film selected from a group consisting of a short pass filter, a long pass filter, and a heat dissipation member and disposed on a surface of the second light-transmissive member.

Solid state light fixtures include a plurality of blue-shifted-yellow/green light emitting diode (“LED”) packages and a plurality of blue-shifted-red LED packages, where the solid state light fixture emits light having a correlated color temperature of between 1800 K and 5500 K, a CRI value of between 80 and 99, a CRI R9 value of between 15 and 75, and a Qg value of between 90 and 110 when the blue-shifted-yellow/green LED packages and the blue-shifted-red LED packages are operating at steady-state operating temperatures of at least 80° C.

An LED tube lamp comprises a glass lamp tube having a main body, two end caps coupled to a respective end of the tube, an LED light strip adhered to inner circumferential surface of the tube by first adhesive, a plurality of LED light sources mounted on a mounting region, a power supply module having a circuit board and a plurality of electronic components mounted on the circuit board, a diffusion layer covering on outer surface or inner surface of the tube, and a protective layer being disposed on surface of the strip and having a plurality of first openings for disposing the plurality of LED light sources. The strip comprises the mounting region and connecting region at an end of the strip. The circuit board is substantially parallel with axial direction of the tube, electrically connects to the connecting region, and stacks with a portion of the connecting region.

A method of lamp assembly that etching a glass tube body to increase a texture of the surface of the sidewall of the glass tube body, the sidewall of the glass tube body enclosing a hollow interior; and positioning a circuit board including a plurality of light emitting diodes (LEDs) within the hollow interior of the glass tube, wherein the increase in the texture of the surface increases the light diffusivity of the glass tube body.

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.

An LED tube lamp with overvoltage protection capability is provided. The LED tube lamp includes a lamp tube, two external connection terminals, a rectifying circuit, a filtering circuit, an LED module, and a protection circuit. The protection circuit is coupled between two input terminals of the LED module and configured to perform overvoltage protection when determining that a voltage level between the two input terminals of the LED module reaches or is higher than a predefined voltage value, wherein the protection circuit includes a diode and the predefined voltage value is in a range of about 40V to about 600V.

An LED tube lamp comprises a glass lamp tube having a main body, two end caps coupled to a respective end of the tube, an LED light strip adhered to inner circumferential surface of the tube by first adhesive, a plurality of LED light sources mounted on a mounting region, a power supply module having a circuit board and a plurality of electronic components mounted on the circuit board, a diffusion layer covering on outer surface or inner surface of the tube, and a protective layer being disposed on surface of the strip and having a plurality of first openings for disposing the plurality of LED light sources. The strip comprises the mounting region and connecting region at an end of the strip. The circuit board is substantially parallel with axial direction of the tube, electrically connects to the connecting region, and stacks with a portion of the connecting region.

A light-emitting diode (LED) tube lamp comprising a tube, end caps with contact pins and located on both ends of the tube, a first rectifying circuit and a second rectifying circuit and a filtering circuit that are coupled with the contact pins on the two end caps respectively, and a switch circuitry that is located between the rectifying circuits and the filtering circuit characterized in that the switch circuitry is capable of detecting whether the LED tube lamp is correctly installed on a lamp socket so as to reduce the risk of electric shock.

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 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.