Patent ID: 7052151

Claim:
A photography light source device provided as a light source of a camera included in a mobile device, comprising a light source of said photography light source device composed of a plurality of white-light LED elements having a combination of an LED generating blue light and fluorophor converting blue light to yellow light or a combination of an LED element generating near-ultraviolet light and fluorophor converting near-ultraviolet light to three primaries red, green, and blue and arranged in a row parallel with the longitudinal direction of the photograph, and a case having a convex lens on which linear Fresnel cuts are applied in a linear direction parallel to said arrangement direction mounted on said LED element; characterized in that upon lighting of said LED element, a drive performed with a current of between 3 and 50 times the rated current of said LED element and a lighting duration of between 10 and 600 msec, makes light convergent with a half reduction angle of approximately 20° on the shorter side of the photograph and with a half reduction angle of approximately 35° on the longer side of the photograph.