PROBLEM TO BE SOLVED: To solve such a problem that a configuration for appropriately dimming a light quantity of a light source requires a significant manufacture cost.SOLUTION: The light quantity adjusting member includes: a shield part for shielding a part of a light flux exited from a light source and a support part that supports the shield part and can fix the shield part at a prescribed position in a housing of the light source device in an attitude inclined to an arbitrary angle with respect to an optical axis of the light source. The light quantity adjusting member is configured to change a shielding area of the light flux by the shield part according to the attitude of the shield part to the light source.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2016,JPO&INPIT【課題】光源の光量を適正に減光するための構成には製造コストがかかる。【解決手段】光量調整部材を、光源より射出される光束の一部を遮蔽する遮蔽部と、遮蔽部を支持するものであって、光源装置の筐体内の所定位置で該遮蔽部を光源の光軸に対して任意の角度に傾けた姿勢で固定することが可能な支持部とを備え、光源に対する遮蔽部の姿勢に応じて該遮蔽部による光束の遮蔽面積が変わるように構成する。【選択図】図2
