| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens barrel that reduces the occurrence of flare. SOLUTION: The lens barrel 131 is used for transmitting light and leading it to an image sensor. Protruding groups 143a, 143b and 143c are provided so that arc-shaped protrusions 142a, 142b and 142c are formed by contacting them with internal faces 141a, 141b and 141c of the lens barrel 131. The protrusions 142a, 142b and 142c reflect luminous flux entering from specific directions so that they are diffused, thereby preventing them as lump flare from entering the image sensor and reducing the occurrence of the flare. COPYRIGHT: (C)2011,JPO&INPIT
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