Abstract: Provided is an additive for an electroplating solution, including a reaction product of at least one kind of epoxy compound (a1) represented by the general formula (1) and at least one kind of tertiary amine compound (a2): where L1 and L2 each independently represent a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a group represented by any one of the general formulae (L-1) to (L-3), and n represents an integer of from 1 to 5: where m1 to m3 each independently represent an integer of from 1 to 5, and * represents a bonding site.

Abstract: According to one embodiment, a method is disclosed for evaluating discomfort glare. The method can include obtaining average luminance information relating to an average luminance La of a luminous surface of a luminaire, luminance uniformity ratio information relating to a luminance uniformity ratio U of the luminous surface, luminous surface size information relating to a size ? of the luminous surface, and background luminance information relating to a background luminance Lb of the luminaire. The method can include calculating an evaluation parameter value based on the La, the U, the ?, and the Lb obtained in the obtaining. The evaluation parameter value is a value of a product of a value based on the La, a value based on the U, and a value based on the ? divided by a value based on the Lb.

Abstract: A luminaire includes a semiconductor light source having a light emission peak in a range of wavelength smaller than 480 nm and a phosphor excited by light radiated from the semiconductor light source to radiate light having wavelength equal to or larger than 480 nm. A spectrum of radiated light obtained by combining the light radiated from the semiconductor light source and the light radiated from the phosphor has a light emission peak in a range of wavelength equal to or larger than 610 nm and smaller than 650 nm. A ratio of radiation energy in a range of wavelength equal to or larger than 650 nm and equal to or smaller than 780 nm to radiation energy in a range of wavelength equal to or larger than 600 nm and smaller than 650 nm is equal to or lower than 35%. A color gamut area ratio exceeds 100%.

Abstract: According to one embodiment, a lighting control system includes a plurality of luminaire, a sensor device, a luminance sensor, and a lighting control unit. The luminaires are set in a lighting space. The sensor device detects presence of a person in the lighting space. The luminance sensor detects indirect luminance in a predetermined position in the lighting space by the luminaire. The lighting control unit subjects the luminaire to lighting control such that the indirect luminance detected by the luminance sensor does not fall below a predetermined value in a position where the sensor device detects presence of the person.

Abstract: Plural luminaires are installed in a lighting space surrounded by a wall part. A sensor equipment detects existence or nonexistence of a person in the lighting space. If existence of a person in the lighting space is detected, the sensor equipment detects a direction of the person. The sensor equipment detects a distance between the wall part positioned in front of the direction of the person and the person. A lighting control unit selectively switches between a first control for performing lighting control of the luminaires to illuminate the wall part positioned in front of the direction of the person if the detected distance is a specified distance or less, and a second control for performing lighting control of the luminaires to reduce brightness at a place as the place becomes farther from a position of the person if the detected distance is larger than the specified distance.

Abstract: A luminaire includes a semiconductor light source having a light emission peak in a range of wavelength smaller than 480 nm and a phosphor excited by light radiated from the semiconductor light source to radiate light having wavelength equal to or larger than 480 nm. A spectrum of radiated light obtained by combining the light radiated from the semiconductor light source and the light radiated from the phosphor has a light emission peak in a range of wavelength equal to or larger than 610 nm and smaller than 650 nm. A ratio of radiation energy in a range of wavelength equal to or larger than 650 nm and equal to or smaller than 780 nm to radiation energy in a range of wavelength equal to or larger than 600 nm and smaller than 650 nm is equal to or lower than 35%. A color gamut area ratio exceeds 100%.

Abstract: In a luminaire, a diffusing unit diffuses the light, which has been emitted from a light source unit, according to light transmissibility. A position information obtaining unit obtains position information which at least indicates the position of a person. A luminance obtaining unit obtains the luminance of a luminous part at the position specified in the position information. A calculating unit calculates, according to the light transmissibility and the luminance of the luminous part, a luminance uniformity ratio which indicates the uniformity in the luminance distribution in the luminous part at the position specified in the position information. According to the luminance and the luminance uniformity ratio, a control unit varies the light transmissibility and varies the light output of the light source unit.

Abstract: According to an embodiment, a luminaire includes a plurality of light source units having mutually different characteristics; and a plurality of diffusing units configured to diffuse light emitted from the light source units and have mutually different characteristics.

Abstract: According to one embodiment, a luminaire is provided which can enhance the feeling of brightness of a space and can reduce glare. The luminaire includes an equipment mounted on a ceiling surface. The equipment includes a light source and a light control unit. When an amount of light emitted outside from the equipment is an equipment luminous flux, and a direction right under the equipment has a luminous intensity distribution angle of 0°, the light control unit controls to cause a luminous flux falling within a range of a luminous intensity distribution angle of 90° to 120° to be 20% or more of the equipment luminous flux and to cause a luminous flux falling within a range of a luminous intensity distribution angle of 60° to 90° to be 20% or less of the equipment luminous flux.

Abstract: According to an embodiment, a control apparatus includes an identification unit and a derivation unit. The identification unit is configured to identify an attribute of an object included in image data. The derivation unit is configured to derive a combination of at least two types of light sources and lighting rates of the light sources, based on the identified attribute of the object, the lights having different spectral power distributions.

Abstract: Plural luminaires are installed in a lighting space surrounded by a wall part. A sensor equipment detects existence or nonexistence of a person in the lighting space. If existence of a person in the lighting space is detected, the sensor equipment detects a direction of the person. The sensor equipment detects a distance between the wall part positioned in front of the direction of the person and the person. A lighting control unit selectively switches between a first control for performing lighting control of the luminaires to illuminate the wall part positioned in front of the direction of the person if the detected distance is a specified distance or less, and a second control for performing lighting control of the luminaires to reduce brightness at a place as the place becomes farther from a position of the person if the detected distance is larger than the specified distance.

Abstract: According to one embodiment, a lighting control unit turns on luminaires corresponding to a presence area among four detection areas adjacent to one another in a predetermined direction and a crossing direction. If there is one presence area among the four detection areas, the lighting control unit relatively reduces the brightness of the luminaires corresponding to remaining three absence areas. If there are two presence areas among the four detection areas, the lighting control unit relatively reduces the brightness of the luminaires on a side adjacent to the presence areas among the luminaires corresponding to the remaining two absence areas and turns off the remaining other luminaires. If there are three presence areas among the four detection areas, the lighting control unit turns off the luminaires corresponding to the remaining one absence area.

Abstract: Plural luminaires are installed in a lighting space surrounded by a wall part. A sensor equipment detects existence or nonexistence of a person in the lighting space. If existence of a person in the lighting space is detected, the sensor equipment detects a direction of the person. The sensor equipment detects a distance between the wall part positioned in front of the direction of the person and the person. A lighting control unit selectively switches between a first control for performing lighting control of the luminaires to illuminate the wall part positioned in front of the direction of the person if the detected distance is a specified distance or less, and a second control for performing lighting control of the luminaires to reduce brightness at a place as the place becomes farther from a position of the person if the detected distance is larger than the specified distance.

Abstract: According to one embodiment, a lighting control system includes a plurality of luminaire, a sensor device, a luminance sensor, and a lighting control unit. The luminaires are set in a lighting space. The sensor device detects presence of a person in the lighting space. The luminance sensor detects indirect luminance in a predetermined position in the lighting space by the luminaire. The lighting control unit subjects the luminaire to lighting control such that the indirect luminance detected by the luminance sensor does not fall below a predetermined value in a position where the sensor device detects presence of the person.

Abstract: In an embodiment, a lighting control system includes a plurality of lighting apparatuses and a central control device. In an embodiment, the central control device controls lighting states of the plurality of lighting apparatuses, based on a first illumination which is an illumination of an irradiated surface irradiated by the plurality of lighting apparatuses, and a second illumination which is an illumination at a certain measurement point in a lighting space irradiated by light sources of the plurality of lighting apparatuses and is formed by a reflected light of light emitted by the lighting apparatuses.

Abstract: A method for designing indoor lighting includes disposing a first luminaire on a ceiling surface that forms an indoor space, the first luminaire having a luminous intensity distribution characteristic that a luminous flux over a range of luminous intensity distribution angles no smaller than 90 degrees but no greater than 120 degrees with respect to a vertically downward direction, which represents 0 degrees, is 20% of a luminous flux of the luminaire or greater and a luminous flux over a range of luminous intensity distribution angles no smaller than 60 degrees but smaller than 90 degrees is 20% of the luminous flux of the luminaire or smaller; and disposing a second luminaire in the indoor space, the second luminaire illuminating a wall surface present in a region corresponding to the luminous intensity distribution angles of light from the first luminaire no less than 60 degrees but smaller than 90 degrees.

Abstract: A luminaire includes a semiconductor light source having a light emission peak in a range of wavelength smaller than 480 nm and a phosphor excited by light radiated from the semiconductor light source to radiate light having wavelength equal to or larger than 480 nm. A spectrum of radiated light obtained by combining the light radiated from the semiconductor light source and the light radiated from the phosphor has a light emission peak in a range of wavelength equal to or larger than 610 nm and smaller than 650 nm. A ratio of radiation energy in a range of wavelength equal to or larger than 650 nm and equal to or smaller than 780 nm to radiation energy in a range of wavelength equal to or larger than 600 nm and smaller than 650 nm is equal to or lower than 35%. A color gamut area ratio exceeds 100%.

Abstract: According to one embodiment, a luminaire is provided which can enhance the feeling of brightness of a space and can reduce glare. The luminaire includes an equipment mounted on a ceiling surface. The equipment includes a light source and a light control unit. When an amount of light emitted outside from the equipment is an equipment luminous flux, and a direction right under the equipment has a luminous intensity distribution angle of 0°, the light control unit controls to cause a luminous flux falling within a range of a luminous intensity distribution angle of 90° to 120° to be 20% or more of the equipment luminous flux and to cause a luminous flux falling within a range of a luminous intensity distribution angle of 60° to 90° to be 20% or less of the equipment luminous flux.

Abstract: According to one embodiment, a luminaire includes a light-emitting part to emit a blue light with a peak wavelength of 430 nanometers or more and less than 460 nanometers, and a phosphor that is excited by the emitted light of the light-emitting part and emits a light having a color different from blue. In an emission spectrum including the emitted light of the light-emitting part and the light emitted from the phosphor, an intensity peak in a range of a light wavelength of 430 nanometers to 490 nanometers is in a range of a wavelength of 470 nanometers to 490 nanometers.

Abstract: According to an embodiment, a lighting device includes a first to fourth light sources, a control unit, and an operation unit. The first to fourth light sources have a different combination of a relatively high/low correlated color temperature and a relatively high/low general color rendering index from each other. The control unit controls at least two of a light flux, the correlated color temperature, and the general color rendering index of each of the light sources. The operation unit designates at least one of the correlated color temperature and the general color rendering index of each of the light sources, and executes spectral distribution with the designated correlated color temperature, or general color rendering index.