A holiday or event decoration that is able to synchronize media shows between multiple devices.

In a first light emission control device, a clock signal is generated, and after a first driving sequence starts to be performed in which the respective states of light-emitting elements in a first light-emitting element array are sequentially switched synchronously with the clock signal, at a particular time point a characteristic of the clock signal is changed from a first characteristic to a second characteristic. After the change, in a second light emission control device, a second driving sequence is performed in which the respective states of light-emitting elements in a second light-emitting element array are sequentially switched synchronously with the clock signal.

In a first light emission control device, a clock signal is generated, and after a first driving sequence starts to be performed in which the respective states of light-emitting elements in a first light-emitting element array are sequentially switched synchronously with the clock signal, at a particular time point a characteristic of the clock signal is changed from a first characteristic to a second characteristic. After the change, in a second light emission control device, a second driving sequence is performed in which the respective states of light-emitting elements in a second light-emitting element array are sequentially switched synchronously with the clock signal.

An illumination system for a lighting assembly comprises a light assembly configured to selectively illuminate an operating region in a surgical suite and a plurality of light sources positioned within the light assembly and configured to emit light. The system further comprises at least one imager configured to capture image data and a controller. The controller is configured to scan the image data in at least one region of interest for a shaded region and identify a location of the shaded region within the region of interest. The controller is further configured to control the light assembly to activate at least one of the light sources to emit light impinging on the shaded region within the region of interest.

A lighting device is disclosed with control logic to provide a user with the option of powering on in a high power mode and cycling through to a low power mode or starting first in a lower power mode and cycling up to a higher power mode. In another aspect, the lighting device has a secondary light source that functions as a status indicator in a first mode and as a source of illumination in a second mode, wherein the power output of the first mode is less than the second mode.

A lighting device is disclosed with control logic to provide a user with the option of powering on in a high power mode and cycling through to a low power mode or starting first in a lower power mode and cycling up to a higher power mode. In another aspect, the lighting device has a secondary light source that functions as a status indicator in a first mode and as a source of illumination in a second mode, wherein the power output of the first mode is less than the second mode.

A lighting system includes a lighting device arranged to attach to a vehicle. The lighting device includes at least two ultraviolet lights and at least one sensor. The sensor determines whether any of at least two areas or zones adjacent to the lighting device are poorly visibly illuminated and/or occupied by personnel, and illuminates these areas or zones with ultraviolet light. The lighting system is configured to operate in conjunction with existing emergency visible lighting and/or flashing visible light systems by using the sensors to sense visible illumination of each individual area or zone provided by the existing emergency visible lighting and flashing visible light systems. The lighting system may be configured to synchronize the illumination of each individual area or zone in ultraviolet light with intermittent absence of visible light illumination in each area or zone from the existing emergency visible lighting and flashing visible light systems.

A lighting system includes a lighting device arranged to attach to a vehicle. The lighting device includes at least two ultraviolet lights and at least one sensor. The sensor determines whether any of at least two areas or zones adjacent to the lighting device are poorly visibly illuminated and/or occupied by personnel, and illuminates these areas or zones with ultraviolet light. The lighting system is configured to operate in conjunction with existing emergency visible lighting and/or flashing visible light systems by using the sensors to sense visible illumination of each individual area or zone provided by the existing emergency visible lighting and flashing visible light systems. The lighting system may be configured to synchronize the illumination of each individual area or zone in ultraviolet light with intermittent absence of visible light illumination in each area or zone from the existing emergency visible lighting and flashing visible light systems.

Disclosed is an enhanced infinity mirror with an application interface for controlling and/or changing the illumination, reflection, and/or other effects produced by the enhanced infinity mirror. The enhanced infinity mirror may include a first reflective surface, a second reflective surface positioned relative to the first reflective surface, and light sources that generate an infinity effect based on reflections off the first reflective surface and the second reflective surface. The application interface may receive a pattern, and may control illumination of different sets of the light sources at different times according to the pattern by illuminating a first set of the light sources with first colors for a first duration as defined in a first step of the pattern, and a second set of the light sources with second colors for a second duration as defined in a second step of the pattern.

A solid state driver to adapt current ripple characteristics therein, at least partially based on operating characteristics of a solid state lighting device operated by the driver, is provided. The driver senses operating voltage, operating current, or a combination of operating voltage and operating current of a solid state lighting device. The driver stores pre-determined current ripple percentage settings in a data structure, for example, in a controller circuit. The driver selects and implements one of the pre-determined current ripple percentage settings based on one or more of the sensed operating characteristics of the solid state lighting device, to improve efficiency, to reduce the operating frequency, and/or to lower the operating temperature of one or more components of the driver.