| 摘要 |
A camera having a light-emitting device comprises: a light-emitting unit formed to emit light onto skin; and a light-receiving unit formed to receive reflected light generated by being reflected from the skin onto which light has been emitted by the light-emitting unit. The light-emitting unit includes a plurality of sets of light-emitting devices, and each of the sets may include one or more light-emitting devices formed to emit light having the same identical wavelengths. Moreover, each of the sets is formed to sequentially emit light, and may be formed to emit light having a different wavelength from that of another set. When the camera is used, light having different wavelengths is sequentially emitted, so information for each wavelength of skin may be obtained. A polarizing direction is adjusted, so distorted information may be reduced and diagnosis may be accurately performed. A plurality of light-emitting device sets may be independently driven, so each of the light-emitting device sets may have optimal electrical properties. |
