| 摘要 |
PROBLEM TO BE SOLVED: To provide a housing capable of reducing the number of parts and simply positioning optical parts. SOLUTION: The housing 12 having a shape connecting plural ribs 16 (16A to 16D) like a grating is unitedly molded on the inside of an outer frame by synthetic resin. Positioning projections 46, 50, 52 as positioning parts for positioning a 1st Fθlens 34 on the ribs 16, a side end part positioning projection 62 and abutting projections 66, 52 are formed unitedly with the ribs 16 and lens presses 54, 70 to be fixing means for fixing the lens 34 on the positioning part and a side end part positioning projection 64 are formed unitedly with the ribs 16.
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