A lighting device for inspection of an inspection object that has a concave or convex inspection surface, comprising: a surface light source that is adapted to emit inspection light; a lens that is provided on a light axis of the inspection light emitted from the surface light source; and a first diaphragm that is provided between the surface light source and the lens, and on the light axis of the inspection light, wherein: the lighting device is adapted to have set positions of the surface light source and the lens such that an image plane on which the surface light source is imaged in focus is present on the inspection surface of the inspection object; characterized in that the lighting device for inspection is adapted to be able to change the setting position of the first diaphragm along the light axis so that in the case that the inspection object has the convex inspection surface, the first diaphragm is arranged between a focal point of the lens and the surface light source on the light axis such that a central axis of an irradiation solid angle (ω 0) determined by the inspection light which is incident on an outer edge part of the image plane, is displaced from the light axis and is tilted by a predetermined amount from an outer edge side toward a center side of the image plane, or in the case that the inspection object has the concave inspection surface, the first diaphragm is arranged between the lens and the focal point of the lens on the light axis such that the central axis of the irradiation solid angle (ω 0) determined by the inspection light which is incident on an outer edge part of the image plane, is displaced from the light axis and is tilted by a predetermined amount from a center side toward an outer edge side of the image plane. a surface light source that is adapted to emit inspection light; a lens that is provided on a light axis of the inspection light emitted from the surface light source; and a first diaphragm that is provided between the surface light source and the lens, and on the light axis of the inspection light, wherein: the lighting device is adapted to have set positions of the surface light source and the lens such that an image plane on which the surface light source is imaged in focus is present on the inspection surface of the inspection object; characterized in that the lighting device for inspection is adapted to be able to change the setting position of the first diaphragm along the light axis so that in the case that the inspection object has the convex inspection surface, the first diaphragm is arranged between a focal point of the lens and the surface light source on the light axis such that a central axis of an irradiation solid angle (ω 0) determined by the inspection light which is incident on an outer edge part of the image plane, is displaced from the light axis and is tilted by a predetermined amount from an outer edge side toward a center side of the image plane, or in the case that the inspection object has the concave inspection surface, the first diaphragm is arranged between the lens and the focal point of the lens on the light axis such that the central axis of the irradiation solid angle (ω 0) determined by the inspection light which is incident on an outer edge part of the image plane, is displaced from the light axis and is tilted by a predetermined amount from a center side toward an outer edge side of the image plane. the lighting device is adapted to have set positions of the surface light source and the lens such that an image plane on which the surface light source is imaged in focus is present on the inspection surface of the inspection object; characterized in that the lighting device for inspection is adapted to be able to change the setting position of the first diaphragm along the light axis so that in the case that the inspection object has the convex inspection surface, the first diaphragm is arranged between a focal point of the lens and the surface light source on the light axis such that a central axis of an irradiation solid angle (ω 0) determined by the inspection light which is incident on an outer edge part of the image plane, is displaced from the light axis and is tilted by a predetermined amount from an outer edge side toward a center side of the image plane, or in the case that the inspection object has the concave inspection surface, the first diaphragm is arranged between the lens and the focal point of the lens on the light axis such that the central axis of the irradiation solid angle (ω 0) determined by the inspection light which is incident on an outer edge part of the image plane, is displaced from the light axis and is tilted by a predetermined amount from a center side toward an outer edge side of the image plane.