The supporting structure for a rod integrator 300 includes, for example, holding members 350a, 350b for holding the rod integrator 300, and supporting units 360a, 360b for supporting the holding members. Each holding member 350a contacts by its planar portions (walls) respectively with two side surfaces of the rod integrator 300 adjacent to one another. The holding member 350a has a clearance such that the holding member does not contact with the edge shared by the two side surfaces of the rod integrator 300. The supporting unit 360a includes, for example, a supporting member 361a and screw 362a. The supporting unit 360a supports the rod integrator 300 by pressing of the screw 362a along the direction of the diagonal of the rod integrator 300 via the supporting member 361a. By doing so, chipping and scratching proximate to the edge can be reduced, and soiling of the reflecting plane can be prevented.
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机译：棒状积分器 300 的支撑结构包括，例如，夹持构件 350 a， 350 b 用于固定棒式积分器 300 和支撑单元 360 a， 360 b 用于支撑保持部件。每个保持构件 350 a 的平面部分（壁）分别与棒状积分器 300 的两个相邻侧面接触。保持构件 350 a 具有间隙，以使保持构件不与棒状积分器 300的两个侧面所共有的边缘接触。 支撑单元 360 a 包括例如支撑构件 361 a 和螺钉< B> 362 a。 支撑单元 360 a 通过按下螺钉 362 300 > a 沿着棒状积分器 300 的对角线方向通过支撑构件 361 a。 通过这样做，可以减少靠近边缘的碎裂和刮擦，并且可以防止反射平面的污染。
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