Abstract: This disclosure includes kits for retrofitting, or replacing with new, light fixtures using an existing troffer, without using a troffer, and/or including a troffer. Some kits include a frame for a light fixture having a first end, a second end, and a frame length extending between the ends, a first mounting member coupled to the frame and configured to extend beyond the first end of the frame, and a second mounting member coupled to the frame and configured to extend beyond the second end of the frame, where the mounting members are configured to support the frame relative to the troffer. Others of the present kits have a trim configured to support the frame relative to a T-bar support of a suspended ceiling. Some kits have a processor configured to control the light fixtures, and some kits have one or more sensors configured to detect events or environmental characteristics.

Abstract: An LED driver is provided having a gate drive integrated circuit with an adaptive operating mode which operates between a first operating mode and a second operating mode. The gate drive integrated circuit is designed to primarily operate in the first operating mode which includes a predetermined minimum on-time and a predetermined maximum off-time for enabling and disabling gate drive signals to a switch, respectively. The second operating mode begins at the minimum on-time and the maximum off-time. The LED driver further includes a controller configured to monitor an on-time and an off-time of the gate drive signals. The controller is further configured responsive to the second operating mode to fix the on-time equal to the predetermined minimum on-time and to continually adjust the off-time greater than or equal to the maximum off-time.

Abstract: The invention is related to a backlight module, including a housing, a light source element and a magnetic element. The light source element includes a light source and a light-guide plate. The light source and the light-guide plate are disposed on the housing. The magnetic element is disposed on one of the light source element and the housing. The light source element is combined with the housing via a magnetic force between the magnetic element and the other one of the light source element and the housing.

Abstract: A color-tunable lighting device and method is disclosed. The device includes a lighting component that has a first lighting element having a warm color temperature, and a second lighting element having a cool color temperature. The first and second lighting elements, together, have a combined color temperature and a combined lumen output. The device further includes a controller configured to apply a first power input to the first lighting element and a second power input to the second lighting element wherein the combined color-temperature of the first lighting element and the second lighting element may be tuned to a desired color temperature at a desired combined lumen output of the lighting component.

Abstract: A connector assembly suppresses electromagnetic interference (EMI) generated by electronic circuitry on a printed circuit board (PCB). The connector assembly includes a plurality of conductive through-holes on the PCB, a connector, and a magnetic collar. The plurality of conductive through-holes are electrically connected to the electronic circuitry on the PCB. The connector has a plurality of terminal pins extending from a connector surface. The plurality of terminal pins and conductive through-holes may be aligned. The terminal pins are positioned through the conductive through-holes to electrically connect the terminals pins to the electronic circuitry. The magnetic collar surrounds the connector. The magnetic collar may also abut the PCB. The magnetic collar suppresses EMI on voltages propagating through the connector.

Abstract: A connector assembly suppresses electromagnetic interference (EMI) generated by electronic circuitry on a printed circuit board (PCB). Certain embodiments of the connector assembly include common features such as conductive through-holes on the PCB, and a connector having terminal pins positionable through the conductive through-holes. The first embodiment includes a magnetic wafer positionable between the connector and the PCB. The second embodiment includes a plurality of stackable magnetic wafers positionable in a stack between the connector and the PCB. The third embodiment includes a magnetic cup wafer positionable between the connector and the PCB. The fourth embodiment, combines the cup wafer with the stackable magnetic wafers of the second and third embodiments. Each magnetic wafer includes wafer holes for the terminal pins to pass through. The magnetic wafers are configured to increase inductance and provide effective EMI noise suppression.

Abstract: A light source module including at least one optical film and a light source unit is provided. The light source unit is disposed under the at least one optical film, and a space is formed between the light source unit and the at least one optical film. The light source unit includes a plurality of light emitting elements and a plurality of secondary lenses. The light emitting elements are arranged along a direction parallel to the at least one optical film. The secondary lenses are correspondingly disposed on the light emitting elements and each of the secondary lenses has a patterned reflective layer.

Abstract: A polarized type viewing angle control element including a biaxial compensation film and a plurality of polarizers is provided. The polarizers are disposed on opposite sides of the biaxial compensation film. A polarized type viewing angle control display module and a polarized type viewing angle control light source module are also provided.

Abstract: A display apparatus including at least one display unit is provided. The display unit includes a liquid crystal display (LCD) module and a self-luminous display module. The self-luminous display module is disposed on an edge of the LCD module. The display apparatus makes an effective use of a frame region of the LCD module for displaying, and maintains the characteristic of the LCD module.

Abstract: A display device having an exterior surface and including a back cover, a frame, a display panel and a backlight module is provided. The frame is assembled to the back cover and has a first supporting portion and a second supporting portion. The display panel is disposed in the frame, wherein the first supporting portion supports the display panel. The backlight module is disposed in the frame and located between the back cover and the display panel, wherein the second supporting portion supports the backlight module. The frame has a side surface, and the side surface is a portion of the exterior surface.

Abstract: An electro-optical apparatus including an electronic apparatus and at least one light-emitting module is provided. The electronic apparatus has a containing area. The light-emitting module is disposed in the containing area and includes at least one light-emitting element, a taper light guide element, and a strip light guide element. The light-emitting element emits at least one beam. The taper light guide element is disposed on the transmission path of the beam and has a first end and a second end opposite to each other. The taper light guide element tapers off from the first end toward the second end. The first end is adjacent to the light-emitting element. The strip light guide element is disposed on the transmission path of the beam from the taper light guide element. The second end is adjacent to the strip light guide element. A scene apparatus is also provided.

Abstract: A driver circuit provides power from a power source to a load. The driver circuit includes a surge protector, an input stage (e.g., full wave rectifier), a controller, an overvoltage protection circuit, and an output stage (e.g., a half bridge inverter). The input stage receives power from the power source and provides a direct current (DC) power rail. The controller operates the output stage to provide power from the DC power rail to the load. The overvoltage protection circuit shuts down the controller when the DC power rail exceeds a predetermined voltage. This ceases operation of the output stage, protecting the output stage from damage while the DC power rail is above the predetermined voltage.

Abstract: A driver circuit includes a combined current and voltage control circuit for driving a light emitting diode (LED) load. The driver circuit includes an isolation transformer having primary, secondary, and auxiliary windings. A primary side circuit is coupled to the primary winding and includes a power factor controller and a switch. The power factor controller controls an output current to the LED load by controlling an operational state of the switch. A secondary side circuit is coupled to the secondary winding. The secondary side circuit includes a proportional and integration (PI) control portion which outputs a control signal. A combined voltage and current control circuit is coupled to the auxiliary winding and includes an optocoupler coupled to the power factor controller and to the PI control section. The combined voltage and current control circuit transmits a control signal from the PI control section to the power factor controller.

Abstract: A light guide plate and assembly thereof are disclosed. The light guide plate includes a base plate, an optical pattern on the bottom surface of the base plate, a first circuit and a second circuit on the top surface of the base plate. As a front light module, the first circuit is designed to be light penetrable at the visual area of the base plate as a touch sensing circuit, and the second circuit is surrounding and electrically connected the first circuit. The front light module achieves the thickness reduction of a mobile device having a reflective type panel. As a back light module, the first circuit and the second circuit are arranged in two adjacent blocks on the top surface of the base plate without electrically connecting to each other. The back light module may be applied to perform a local dimming technology by adapting an extra low resolution panel.

Abstract: A backlight module includes a light guide plate, a plurality of light transmission elements and a light source. The light guide plate has at least one light incident surface, and the light transmission elements are disposed near the light incident surface and aligned to from at least one light transmission element row. The light source is disposed near one end of the light transmission element row and capable of emitting a light beam to the light transmission element row. Each of the light transmission elements reflects a part of the light beam to the light guide plate to form multiple independent light reflection paths, and the light transmission elements successively transmits a part of the light beam to form a light transmission path in the light transmission element row.

Abstract: A viewing angle switchable display apparatus including a display panel, an electrically controlled viewing angle switching device, an electrically controlled light scattering switching device, and a backlight module is provided. The electrically controlled viewing angle switching device includes two first transparent substrates, two first transparent conductive layers, a liquid crystal layer, and a first polarizer located on a side of the electrically controlled viewing angle switching device which is far away from the display panel. The liquid crystal layer includes liquid crystal molecules, and optical axes of the liquid crystal molecules are parallel or perpendicular to a transmission axis of the first polarizer. The electrically controlled light scattering switching device is located between the display panel and the backlight module and includes two second transparent substrates, two second transparent conductive layers, and an electronically controlled polymer material layer.

Abstract: A computer apparatus including a host unit and a display unit is provided. The host unit has a host bonding area and a host connector, and the host connector is located in the host bonding area. The display unit has a display bonding area and a display connector, and the display connector is located in the display bonding area. The display bonding area is adapted to position to the host bonding area, and the display connector is adapted to couple to the host connector. The display unit is detachably connected to the host unit.

Abstract: A display apparatus and a display method are disclosed. The display apparatus includes at least one display unit and a control unit. The display unit includes a liquid crystal display (LCD) module and a self-luminous display module. The self-luminous display module is disposed on an edge of the LCD module. The control unit is electrically connected to the LCD module and the self-luminous display module, and matches optical parameters of the LCD module with optical parameters of the self-luminous display module. The display apparatus makes an effective use of a frame region of the LCD module for displaying, and maintains the characteristic of the LCD module, and the display method matches display effects of the LCD module and the self-luminous display module.

Abstract: A magnetic device for an electronic circuit includes a printed circuit board. A first and second magnetic component assembly can be electrically connected to the printed circuit. The second magnetic component assembly can be stacked on the first magnetic component assembly. The first magnetic component assembly can be positioned between the second magnetic component assembly and the printed circuit board. Each magnetic component assembly can include a bobbin, a winding disposed on the bobbin, and a core extending through the bobbin. A second bobbin on the second magnetic component can be positioned on either a first core or a first bobbin of the first magnetic component assembly. The stacked magnetic component configuration can help reduce the board space required to electrically connect both the first and second magnetic component assemblies to the printed circuit board, which can help increase the power density of the magnetic device.

Abstract: An LED luminaire with an integrated battery backup is divided into a hidden infrastructure portion and a decorative body portion. The luminaire body has a main lighting deck with two separate LED arrays mounted thereon and a decorative skirt extending from the main lighting deck. A first LED array is operative on regular and emergency power, and a second LED array is operative on battery power. A diffuser panel is received over the main lighting deck. The hidden infrastructure portion includes a light fixture housing configured and arranged to be mounted within a building infrastructure, an emergency battery backup assembly received within the light fixture housing wall, and a housing fixture bracket secured within the light fixture housing to support the emergency backup assembly in the upper portion of the light fixture housing.