The present invention relates to a luminaire (1), comprising a housing (2) having a diffusion panel (3) as light emission surface, comprising at least one illuminant (4) which is arranged within the housing (2) such that it is set up to emit light through the diffusion panel (3) to the area outside of the housing (2), and comprising at least two light sensors (S1, S2) arranged within the housing (2), the light sensors being set up to detect light. The at least two light sensors (S1, S2) have different detection regions (B1, B2) within the housing (2) and are set up to detect light (E.sub.t) which enters through the diffusion panel (3) into the housing interior from the area outside of the housing (2), wherein, on account of the different detection regions (B1, B2), one of the at least two light sensors (S1, S2) detects light (E.sub.r2) that was emitted by the at least one illuminant (4) and reflected from at least one wall of the housing interior. The invention further relates to a lighting system having at least one such luminaire and to a method for detecting the ambient light of such a luminaire.

The present invention relates to a luminaire (1), comprising a housing (2) having a diffusion panel (3) as light emission surface, comprising at least one illuminant (4) which is arranged within the housing (2) such that it is set up to emit light through the diffusion panel (3) to the area outside of the housing (2), and comprising at least two light sensors (S1, S2) arranged within the housing (2), the light sensors being set up to detect light. The at least two light sensors (S1, S2) have different detection regions (B1, B2) within the housing (2) and are set up to detect light (E.sub.t) which enters through the diffusion panel (3) into the housing interior from the area outside of the housing (2), wherein, on account of the different detection regions (B1, B2), one of the at least two light sensors (S1, S2) detects light (E.sub.r2) that was emitted by the at least one illuminant (4) and reflected from at least one wall of the housing interior. The invention further relates to a lighting system having at least one such luminaire and to a method for detecting the ambient light of such a luminaire.

A method for modifying a brightness level of an automobile vehicle backup light includes: receiving electronic signals in a brightness evaluator and light controller defining at least one image captured within a field-of-view (FOV) of an automobile vehicle camera; dividing the at least one image into multiple independent zones; evaluating an environmental brightness level of individual ones of the multiple independent zones; comparing a brightness level of at least one backup light of the automobile vehicle to the environmental brightness level; and sending a control signal to the at least one backup light to modify the brightness level of the least one backup light.

Disclosed are a light emitting device configured to control the light output of a light emitting unit and a curing apparatus employing the same. The disclosed light emitting device may comprise: a main body having a window; a light source installed in the main body, for generating light of a predetermined wavelength and irradiating the generated light to the outside of the main body through the window; a photodetector installed in the main body, for receiving part of the light irradiated from the light source and monitoring the intensity of the light source; a light path converting unit installed between the light source and the photodetector, for transferring the part of the light irradiated from the light source to the photodetector; and an intensity adjusting unit for adjusting the intensity of the light source based on the signal detected from the photodetector.

A visible light sensor may be configured to sense environmental characteristics of a space using an image of the space. The visible light sensor may be controlled in one or more modes, including a daylight glare sensor mode, a daylighting sensor mode, a color sensor mode, and/or an occupancy/vacancy sensor mode. In the daylight glare sensor mode, the visible light sensor may be configured to decrease or eliminate glare within a space. In the daylighting sensor mode and the color sensor mode, the visible light sensor may be configured to provide a preferred amount of light and color temperature, respectively, within the space. In the occupancy/vacancy sensor mode, the visible light sensor may be configured to detect an occupancy/vacancy condition within the space and adjust one or more control devices according to the occupation or vacancy of the space. The visible light sensor may be configured to protect the privacy of users within the space via software, a removable module, and/or a special sensor.

A visible light sensor may be configured to sense environmental characteristics of a space using an image of the space. The visible light sensor may be controlled in one or more modes, including a daylight glare sensor mode, a daylighting sensor mode, a color sensor mode, and/or an occupancy/vacancy sensor mode. In the daylight glare sensor mode, the visible light sensor may be configured to decrease or eliminate glare within a space. In the daylighting sensor mode and the color sensor mode, the visible light sensor may be configured to provide a preferred amount of light and color temperature, respectively, within the space. In the occupancy/vacancy sensor mode, the visible light sensor may be configured to detect an occupancy/vacancy condition within the space and adjust one or more control devices according to the occupation or vacancy of the space. The visible light sensor may be configured to protect the privacy of users within the space via software, a removable module, and/or a special sensor.

A method and a device for simulating shadows of a person moving in a building, comprising basic lighting and intended to reproduce a particularly realistic simulation of a moving person in a simple manner. This is achieved by superimposing the at least two sequentially switched lamps on the basic lighting.

A method and a device for simulating shadows of a person moving in a building, comprising basic lighting and intended to reproduce a particularly realistic simulation of a moving person in a simple manner. This is achieved by superimposing the at least two sequentially switched lamps on the basic lighting.

An image detection device includes: a liquid resonant lens system whose focal point is cyclically changed; an image detector configured to detect an image of an object through the lens system; a pulsed illuminator configured to provide pulsed illumination to the object in synchronization with the focal point; and an illumination controller configured to control the pulsed illuminator, in which the pulsed illuminator includes a main illumination section and a supplementary illumination section, and the illumination controller is configured to provide pulsed illumination to the object with the main illumination section and supplement illuminance on the object with the supplementary illumination section when the illuminance on the object by the main illumination section is equal to or less than a predetermined threshold.

An object detection system compensates for variations in transmission characteristics within an object passageway caused by, for example, dust or dirt. An object detection device includes a plurality of electromagnetic radiation emitters and detectors arranged in rows on opposite sides of a passageway. First lenses focus radiation from the emitters into a semi-columnated beams of radiation that together create a plane of semi-columnated electromagnetic radiation that spans substantially across a width of the passageway. Second lenses focus the received electromagnetic radiation onto corresponding ones of the plurality of radiation detectors. A controller receives a radiation intensity signal from the detectors, determines that its value is outside of a predetermined range, and adjusts an amount of electrical power supplied to the plurality of radiation emitters so that the value of the radiation intensity signal changes to become within the predetermined range.