| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical component holding unit which has improved positioning accuracy, while it is easily assembled to realize the reduction of cost and the securement of reproducibility when assembled. SOLUTION: The adjacent optical component holding units 35 are guided to a prescribed position, connected so that they can be pulled out, and three-dimensionally positioned by fitting a rectangular projecting part 8a having a non-circular cross section in a rectangular hole and fitting a circular protrusion 11a having a circular cross section in a circular hole, the rectangular protrusion 8a and the rectangular hole surrounding or forming openings 22a and 22b through which light can pass, and also the adjacent optical component holding units 35 are restricted in a rotating direction and positioned in the rotating direction by fitting the rectangular protrusion 8a in the rectangular hole and fitting a spring pin 13a in a fitting hole. COPYRIGHT: (C)2005,JPO&NCIPI
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