Systems and methods are provided for semi-automatic light control systems which support, amongst other features, receiving a light controlling values from one or more users and choosing an optimal light value based on the aggregated preferences of the present users. The lighting elements of the lighting system are further adjusted based on user perception profiles and other parameters. A semi-automatic determination may be made of a second light controlling value based on the first light controlling value and a user perception profile relating light parameter values with perceived light output values. Lighting element operation may be incrementally adjusted to meet the second light parameter value over a predetermined time period.

A device having a memory to store a setting for a load; an actuator to connect power to or disconnect power from the load; a user input device to adjust a first attribute of the load; a wireless communication interface to receive the setting; and a controller to generate a first control signal to set the first attribute and a second control signal to set a second attribute based on adjustment of the first attribute and the setting. A method for determining a first event, the first event associated with a first trigger and a first action; determining to perform the action associated with the first event in response to occurrence of the first trigger; generating a first control signal based on a user input; and generating a second control signal based on a relationship between the first and the second control signals. A method to program a switch.

A stepless dimming control method of a lighting system is applicable to the situations where a light source for a lighting terminal is a fluorescent lamp and/or an LED lamp. A pulsating voltage regulating device is connected in series with a main power supply circuit of a terminal light source. A dimming control unit is configured for a fluorescent lamp electronic ballast/LED driving unit. The specific method includes: at first, fluctuating a supply voltage value at an input end of the electronic ballast/LED driving unit for a short time by the pulsating voltage regulating device, and then regulating, by the dimming control unit, an output frequency of the electronic ballast and an output current of the LED driving unit according to fluctuation parameters and also in combination with preset system settings, so as to realize dimming. The method can realize remote and stepless dimming, is applicable to the terminal light sources of both fluorescent lamps and LED lamps, has good interference resistance and relatively low system construction/improvement costs, and is extremely suitable for newly-built lighting systems and for use in upgrading existing lighting systems.

A controllable driver (1) is provided for driving a load. The controllable driver (1) comprises a primary converter (11) and a control circuit (13) isolated from one another by an opto-isolator (18). The controllable driver (11) is isolated from an output load (19) by a magnetically coupled pair of windings (112, 114); wherein said windings are adapted to provide a voltage supply to said output load. A feedback signal from the output load, indicative of a load current flowing in the second winding, is provided to the control circuit by a winding (12) isolated from the first and second windings (112, 114), such that the control circuit (13) remains isolated from the output load. The control circuit also directly receive input control signal without an opto-isolator. The control circuit is also isolated from the switching core (111) of the primary converter (11) via an opto-isolator. Such a controllable driver reduces the likelihood and impact of electromagnetic interference test failures and potential energy surges.

A light emitting device which can adjust color temperature as power is supplied from a single power source and a lighting device including the light emitting device are provided. The light emitting device includes an anode electrode land; a cathode electrode land; a first light emitting unit and a second light emitting unit which are electrically connected to the anode electrode land and the cathode electrode land, are adjacently provided in parallel with each other; and a low pass filter including a capacitance member which is provided in parallel with the first light emitting unit and the second light emitting unit, and a resistance member which is provided in series with the first light emitting unit and the second light emitting unit, in which electric resistance of the first light emitting unit is larger than electric resistance of the second light emitting unit.

A lighting apparatus with an image-projecting function that is convenient for a user can be provided. The lighting apparatus includes: an illuminating unit that emits illumination light; and a projection-type image display unit that projects an image. The projection-type image display unit is configured so that a setting menu screen settable about an image displayed by the projection-type image display unit can be displayed.

A road lamp control method is disclosed, comprising steps of determining whether a road lamp lighting condition is satisfied, and controlling the road lamp lighting time period. The method can control ON and OFF and the brightness of the road lamps in real time based on the real traffic flow at night, and thereby ensuring safety of pedestrians and vehicles and saving electrical energy.

Methods, apparatus, and systems for illumination, including wide area lighting applications. In one embodiment, a method of illumination comprises: comparing metamers at a known and similar CCT with at least one metamer having a higher M/P or S/P ratio; selecting at least one of said metamers for improved perceived brightness; evaluating the selected metamer(s) for desired CCT and acceptable CRI; manufacturing a lighting apparatus which emits light of a given CCT having increased melanopic content compared to one or more extant metameric variations of the same or similar CCT; wherein said light has an acceptable CRI. The method can be applied in various apparatus and systems. In one example, the methods, apparatus, and systems can be used to illuminate a wide area target area with increased perceived brightness compared to typical similar lighting. In some cases, this allows energy savings and/or less lighting sources or fixtures than typical lighting.

An example warning device can include: a plurality of light sources forming an array; a plurality of reflectors, with at least one reflector being associated with each of the plurality of lights; at least one lens for each of the plurality of lights; and an optical prism plate that directs light from one or more of the plurality of lights to one of a plurality of far field light spots.

A power control unit (100) and method of use thereof for varying the supply of electricity to an electrical apparatus using a wireless communications link between a controller (20) and the power control unit (100). The power control unit (100) is adapted to alternatively communicate with the controller (20) using a non-peer-to-peer communications standard or a peer-to-peer communications standard such as Wi-Fi Direct.