DEVICE OF PHOTOGRAPHING CIRCULAR MEMBER, METHOD OF PHOTOGRAPHING TIRE SIDE PORTION, AND DEVICE FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To allow photographing of a circular member with fixed brightness even when the thickness of the circular member to be photographed such as a tire varies.

SOLUTION: When photographing a tire side portion 31 with a line camera 11 while illuminating the tire side portion 31 of the tire 30 conveyed by a roller conveyor 40 with photographic light by a line illumination light 12 and illuminating a back light 13 from the back side of the tire 30, the line camera 11 and the line illumination light 12 are mounted integrally to a mount member 14, and the back light 13 is installed in an extension direction of the photographic axis of the line camera 11. When the tire width of the tire 30 conveyed is varied, the mount member 14 is moved vertically along the photographic axis of the line camera 11 according to the tire width of the tire 30 to be photographed.

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