| 摘要 |
PROBLEM TO BE SOLVED: To provide optical parts of high resolution by preventing pattern noises from generating. SOLUTION: Optical parts 10 are formed by mutually arraying plural optical fibers in parallel and are provided with an incident surface 10a, which is diagonally cut relative to the optical axis and an exiting surface 10b which is orthogonally cut relative to the optical axis. Cross-sectional shapes of respective cores 14 of plural optical fibers constituting the optical part 10 are formed into a shape having both recessed parts and projected parts. In further details, the cross sectional shapes of the cores 14 are formed into the shape in which six projected parts are arranged at equal interval and which has a wave-shaped outer periphery.
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