Abstract: A lighting device including at least one first light source configured to emit a visible light through a first light emitting surface, at least one second light source spaced apart from the first light source and configured to emit light having a wavelength for sterilization through a second light emitting surface, and a housing having a bottom portion, on which the first and second light sources are disposed. The housing can include at least one sidewall portion connected to the bottom portion to enclose the first light source and the second light source in one common area, in which the first and second light emitting surfaces face substantially the same direction, and both the first light emitting surface and the second light emitting surface can be disposed at a different elevation from the bottom portion of the housing.

Abstract: A lighting device including at least one first light source configured to emit a visible light through a first light emitting surface, at least one second light source spaced apart from the first light source and configured to emit light having a wavelength for sterilization through a second light emitting surface, and a hosing having a bottom portion, on which the first and second light sources are disposed, and at least one sidewall portion connected to the bottom portion to enclose the first light source and the second light source in one common area, in which the first and second light emitting surfaces face substantially the same direction, and the first light emitting surface and the second light emitting surface are disposed at a different elevation from the bottom portion of the housing.

Abstract: A lighting device including at least one first light source configured to emit a visible light through a first light emitting surface, at least one second light source spaced apart from the first light source and configured to emit light having a wavelength for sterilization through a second light emitting surface, and a hosing having a bottom portion, on which the first and second light sources are disposed, and at least one sidewall portion connected to the bottom portion to enclose the first light source and the second light source in one common area, in which the first and second light emitting surfaces face substantially the same direction, and the first light emitting surface and the second light emitting surface are disposed at a different elevation from the bottom portion of the housing.

Abstract: A lighting device including at least one first light source emitting a visible light, at least one second light source spaced apart from the first light source and emitting a light having a wavelength for sterilization, and a housing, in which the first light source and the second light source are disposed, in which the first light source is disposed outside an area having an angle corresponding to about 50% of a maximum amount of light emitted from the second light source based on a line extending from a center of the second light source along a direction substantially perpendicular to a light emitting surface of the second light source.

Abstract: A skin measurement apparatus for emitting a plurality of lights for photographing an image of the skin. A skin measurement apparatus includes an ultraviolet ray emitting device; a white light emitting device; a focus lens enabling incident light, which is an ultraviolet ray emitted by means of the ultraviolet ray emitting device and a white light emitted by means of the white light emitting device reflected off the skin and transmitted, to pass therethrough; and an emission control device for controlling the ultraviolet ray emitting device and the white light emitting device such that the ultraviolet ray and the white light can be emitted together. The emission control device adjusts the strength of the white light on the basis of white light control information from the outside.

Abstract: In one aspect, a hyperspectral image measurement device is provided to include: a main body; an illumination module disposed in the main body and including LEDs having different peak wavelengths to irradiate light to a subject; a camera disposed on the main body and receiving light reflected from the subject to acquire an image of the subject; a barrel having a contact surface contacting the subject, the contact surface located to be spaced apart from the illumination module and the camera module by a predetermined distance; and a reference cover located on the contact surface and including a standard reflection layer for reflecting light irradiated from the illumination module toward the camera module.

Abstract: In one aspect, a hyperspectral image measurement device is provided to include: a main body; an illumination module disposed in the main body and including LEDs having different peak wavelengths to irradiate light to a subject; a camera disposed on the main body and receiving light reflected from the subject to acquire an image of the subject; a barrel having a contact surface contacting the subject, the contact surface located to be spaced apart from the illumination module and the camera module by a predetermined distance; and a reference cover located on the contact surface and including a standard reflection layer for reflecting light irradiated from the illumination module toward the camera module.

Abstract: A lighting device including at least one first light source emitting a visible light, at least one second light source spaced apart from the first light source and emitting a light having a wavelength for sterilization, and a housing, in which the first light source and the second light source are disposed, in which the first light source is disposed outside an area having an angle corresponding to about 50% of a maximum amount of light emitted from the second light source based on a line extending from a center of the second light source along a direction substantially perpendicular to a light emitting surface of the second light source.

Abstract: In one aspect, a hyperspectral image measurement device is provided to include: a main body; an illumination module disposed in the main body and including LEDs having different peak wavelengths to irradiate light to a subject; a camera disposed on the main body and receiving light reflected from the subject to acquire an image of the subject; a barrel having a contact surface contacting the subject, the contact surface located to be spaced apart from the illumination module and the camera module by a predetermined distance; and a reference cover located on the contact surface and including a standard reflection layer for reflecting light irradiated from the illumination module toward the camera module.

Abstract: In one aspect, a hyperspectral image measurement device is provided to include: a main body; an illumination module disposed in the main body and including LEDs having different peak wavelengths to irradiate light to a subject; a camera disposed on the main body and receiving light reflected from the subject to acquire an image of the subject; a barrel having a contact surface contacting the subject, the contact surface located to be spaced apart from the illumination module and the camera module by a predetermined distance; and a reference cover located on the contact surface and including a standard reflection layer for reflecting light irradiated from the illumination module toward the camera module.

Abstract: A skin measurement apparatus for emitting a plurality of lights for photographing an image of the skin. A skin measurement apparatus includes an ultraviolet ray emitting device; a white light emitting device; a focus lens enabling incident light, which is an ultraviolet ray emitted by means of the ultraviolet ray emitting device and a white light emitted by means of the white light emitting device reflected off the skin and transmitted, to pass therethrough; and an emission control device for controlling the ultraviolet ray emitting device and the white light emitting device such that the ultraviolet ray and the white light can be emitted together. The emission control device adjusts the strength of the white light on the basis of white light control information from the outside.

Abstract: A camera having light emitting devices includes a light emitting unit configured to irradiate light to a skin, and a light receiving unit configured to receive reflected light which is generated when the light irradiated by the light emitting unit is reflected from the skin. The light emitting unit comprises a plurality of sets of the light emitting devices, and each of the sets includes one or more light emitting devices which are configured to irradiate the light with the same wavelength. In addition, each of the sets is configured to sequentially irradiate the light and irradiate light with a wavelength that is different from other sets. By using the camera, it is possible to obtain information of the skin for each wavelength by sequentially irradiating light with wavelengths different from other sets, reduce distorted information, and perform an accurate diagnosis.

Abstract: In one aspect, a hyperspectral image measurement device is provided to include: a main body; an illumination module disposed in the main body and including LEDs having different peak wavelengths to irradiate light to a subject; a camera disposed on the main body and receiving light reflected from the subject to acquire an image of the subject; a barrel having a contact surface contacting the subject, the contact surface located to be spaced apart from the illumination module and the camera module by a predetermined distance; and a reference cover located on the contact surface and including a standard reflection layer for reflecting light irradiated from the illumination module toward the camera module.

Abstract: A camera having light emitting devices includes a light emitting unit configured to irradiate light to a skin, and a light receiving unit configured to receive reflected light which is generated when the light irradiated by the light emitting unit is reflected from the skin. The light emitting unit comprises a plurality of sets of the light emitting devices, and each of the sets includes one or more light emitting devices which are configured to irradiate the light with the same wavelength. In addition, each of the sets is configured to sequentially irradiate the light and irradiate light with a wavelength that is different from other sets. By using the camera, it is possible to obtain information of the skin for each wavelength by sequentially irradiating light with wavelengths different from other sets, reduce distorted information, and perform an accurate diagnosis.

Abstract: The present invention relates to a method of recovering tin and nickel compounds with high purity at a high yield from scrap steel balls for barrel plating through simple processes without using an excess amount of a solvent, the method using an eco-friendly dry pretreatment and subsequent processes including hydrogen reduction and electrolytic refining under certain conditions.