The invention relates to an arrangement (100) comprising a lighting system (110) and a target object (120), wherein the lighting system (110) is arranged to illuminate a target surface of the target object (120) with a primary light output (111) and with a secondary light output (112). Each of these light outputs has an illumination spectrum representing a color. The two illumination spectra are different, but the two colors are substantially the same. The target surface has a first target surface area and a second target surface area. When the first and second target surface areas are illuminated with the primary light output (111), they have a contrast that is lower than when they are illuminated with the secondary light output (112). The arrangement of the invention can be used for atmosphere creation or for attracting attention to the target object (120).

A lighting system is disclosed that includes elongated LED light fixture with one or more master circuit boards configured to power light emitting diodes. The elongated LED light fixtures include modular light boards with arrays of light emitting diodes that interchangeably couple to the matched connectors on the master circuit board. The system further includes elongated LED light fixtures with telescoping end features, fenestrated diffuser optics at ends of the elongated LED fight fixtures and/or pivoting corner features that join sections of the elongated LED light fixtures.

A lighting system is disclosed that includes elongated LED light fixture with one or more master circuit boards configured to power light emitting diodes. The elongated LED light fixtures include modular light boards with arrays of light emitting diodes that interchangeably couple to the matched connectors on the master circuit board. The system further includes elongated LED light fixtures with telescoping end features, fenestrated diffuser optics at ends of the elongated LED fight fixtures and/or pivoting corner features that join sections of the elongated LED light fixtures.

A lighting apparatus with an image-projecting function that is convenient for a user is provided. It includes: an illuminating unit that emits illumination light; a projection-type image display unit that emits image-projecting emission light for projecting an image; and a sensor that emits operation-detecting light for operation detection and that is capable of detecting an operation by an operation object in a range including an image projection area of the projection-type image display unit, and is configured so that the image-projecting light, and the operation-detecting emission light have respective different wavelength distribution characteristics, and regarding a light amount in the wavelength range of light used by the sensor for the operation detection, a light amount of the operation-detecting light is the largest among those of the illumination light, the image-projecting emission light, and the operation-detecting light.

A lighting system includes an LED downlight mountable to a ceiling, a driver, and an insulation displacement connector (IDC). Light from the downlight can be faced downward to project light or upward to reflect light off of the ceiling. The driver has an input with a first voltage and an output with a second voltage, the second voltage being lower than the first and being provided through a wire system extending from the LED driver. The IDC connects the downlight to the wire system. The lighting system can be changed from a first to a second configuration by at least one of adding an additional downlight using a corresponding MC or removing an existing downlight using a corresponding IDC. The second configuration does not significantly affect a desired output range of light from any downlight or any LED circuit of any downlight that remains or preexists from the first configuration.

A device and method for operating a lighting system varies a characteristic of visible light emitted by a first lighthead according to a predefined profile, and fixes a characteristic of visible light emitted by a second lighthead. A light sensor configured to view a focal area of the second lighthead detects a characteristic of visible light on a target surface over a period of time, and the characteristic of the light detected by the light sensor over the period of time is compared to the characteristic of light defined in the predetermined profile. A mode of operation of the first and second lighthead is determined based on the comparison.

A display apparatus including an illumination unit having a first illumination unit including a first light source module, a second illumination unit including a second light source module, and a bracket located between the first and second illumination units to connect the illumination units to each other. The bracket includes a first body portion on which the first light source module is placed, a second body portion on which the second light source module is placed, and a connecting portion located between the first and second body portions to connect the body portions to each other. The connecting portion has a first distance from a first end of the first or second body portion and a second distance from a second end of the first or second body portion, and the second distance is greater than the first distance.

The present disclosure provides a solid state lighting fixture that can be used in outdoor and indoor recessed lighting applications. The solid state lighting fixture has a recessed housing configured to be installed in a recess, and a solid state light assembly capable of being secured to the housing outside the recess. The solid state light assembly is at least partially made of a heat dissipating material capable transferring heat generated by the solid state light assembly to ambient air.

A method and lighting system for promoting survival of larvae from a plurality of eggs within a containment unit. The lighting system includes at least one lighting device emitting light energy in a pre-determined narrow range of wavelengths and a pre-determined lighting intensity that promotes the survival of the larvae within the containment unit.

A signal transmitting device includes an input unit, an output unit, and a step-down circuit. The input unit is configured to receive an input voltage. The output unit is configured to output an output voltage. The step-down circuit is configured to controllably adjust the output voltage by stepping down the input voltage. The step-down circuit includes first and second capacitors, a switch circuit, an inductor, first and second diodes, and a control circuit. The switch circuit includes a series circuit of first and second switches. The control circuit is configured to control the first and second switches to change a voltage value of the output voltage in order to transmit transmission data from the output unit.